Kerberos
Nmap discovered a KDC service on the target port 88 and 464
The running service is Microsoft Windows Kerberos
While I do not know the naming convention that the target domain uses, I will attempt to enumerate usernames as much as possible by brute-forcing the KDC For efficiency, I will get that running in the background while enumerating other services
kerbrute
┌──(kali㉿kali)-[~/PEN-200/PG_PRACTICE/vault]
└─$ kerbrute userenum --dc dc.vault.offsec -d VAULT.OFFSEC /usr/share/wordlists/seclists/Usernames/xato-net-10-million-usernames.txt
__ __ __
/ /_____ _____/ /_ _______ __/ /____
/ //_/ _ \/ ___/ __ \/ ___/ / / / __/ _ \
/ ,< / __/ / / /_/ / / / /_/ / /_/ __/
/_/|_|\___/_/ /_.___/_/ \__,_/\__/\___/
Version: v1.0.3 (9dad6e1) - 05/01/25 - Ronnie Flathers @ropnop
2025/05/01 20:04:54 > Using KDC(s):
2025/05/01 20:04:54 > dc.vault.offsec:88
2025/05/01 20:04:56 > [+] VALID USERNAME: guest@VAULT.OFFSEC
2025/05/01 20:04:58 > [+] VALID USERNAME: administrator@VAULT.OFFSEC
2025/05/01 20:05:23 > [+] VALID USERNAME: Guest@VAULT.OFFSEC
2025/05/01 20:05:23 > [+] VALID USERNAME: Administrator@VAULT.OFFSEC
2025/05/01 20:06:44 > [+] VALID USERNAME: GUEST@VAULT.OFFSECI had kerbrute running in the background for a while, and no user found