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NtdsAudit

Password Auditor

NtdsAudit is an application to assist in auditing Active Directory databases.

It provides some useful statistics relating to accounts and passwords, as shown in the following example.

Usage

NtdsAudit Bloodhound-Edition requires docker and hashcat.

1: Obtaining the required files

1.A: Bloodhound

Run a Bloodhound collector of your choice:

1.B: Dump the domain via ntdsutils

Dump the ntds.dit Active Directory database, and the SYSTEM registry hive. These files are locked by a domain controller and as such cannot be simply copy and pasted. The recommended method of obtaining these files from a domain controller is using the builtin ntdsutil utility.

  • Open a command prompt (cmd.exe) as an administrator. To open a command prompt as an administrator, click Start. In Start Search, type Command Prompt. At the top of the Start menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, enter the appropriate credentials (if requested) and confirm that the action it displays is what you want, and then click Continue.

  • At the command prompt, type the following command, and then press ENTER:

C:\> ntdsutil "activate instance ntds" "ifm" "create full C:\pentest" quit quit

Where C:\pentest is the path to the folder where you want the files to be created.

Then on Kali linux like extract hashes via impacket:

root@kali:~$ secretsdump.py -history -system SYSTEM -ntds ntds.dit local > ~/NtdsAudit/neo4j-import/secretsdump.txt
xxx\azerty:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history0:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history1:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history2:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history3:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history4:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history0:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history1:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history2:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history3:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history4:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
qsd:409948:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history0:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history1:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history2:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history3:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history4:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
computer47$:569350:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
...

1.B Bis: Dump the domain via dcsync

root@kali:~$ secretsdump.py -history DOMAIN/DOMAINADMIN_USER:PASSWORD@IP_DC > ~/NtdsAudit/neo4j-import/secretsdump.txt
xxx\azerty:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history0:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history1:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history2:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history3:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
xxx\azerty_history4:95140:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history0:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history1:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history2:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history3:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
aze_history4:411860:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
qsd:409948:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history0:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history1:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history2:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history3:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
wxc_history4:560774:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
computer47$:569350:aad3b435b51404eeaad3b435b51404ee:aad3b435b51404eeaad3b435b51404ee:::
...

1.C: Cleaning files

Remove all accounts that have a dynamic password (Computers, krbtgt, MSOL_...)

root@kali:~$ grep -Ei '^[^$]+:[a-f0-9]{32}:[a-f0-9]{32}:::' ~/NtdsAudit/neo4j-import/secretsdump.txt | grep -viE '(krbtgt|MSOL_)' > hashcat_target.txt

1.D: Run the glorious Hashcat

root@kali:~$ hashcat -m 1000 hashcat_target.txt ...

2: Place all files in the correct path

git clone this repo and put all files in neo4j-import

root@kali:~$ git clone https://github.com/1mm0rt41PC/NtdsAudit
root@kali:~$ cd NtdsAudit
root@kali:~/NtdsAudit/$ ll neo4j-import
-rwx------  1 root root 37233326 Nov  5 22:35 corp.lan_bloodhound.zip
-rwx------  1 root root   163436 Nov  5 23:01 hashcat.potfile
-rwx------  1 root root   163436 Nov  5 23:01 secretsdump.txt
-rwx------  1 root root   163436 Nov  5 23:01 badwords.txt

3: Create a basic list of not allowed words for the corp:

root@kali:~/NtdsAudit/neo4j-import/$ cat bad-word.txt
welcome
bonjour
geneve
lausanne
password
my-corp

Generate base CSV for Bloodhound

root@kali:~/NtdsAudit/$ sudo bash main.sh # sudo required for docker and HIBP database storage in /opt
...
root@kali:~/NtdsAudit/$ ls output
-rwx------  1 root root 37233326 Nov  5 23:35 PasswordPolicy.xlsx

It's possible to get cleartext password in the excel via:

root@kali:~/NtdsAudit/$ bash main.sh --clear-pass