Kerberos
Nmap discovered a KDC service on the target port 88 and 464
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
Username enumeration
┌──(kali㉿kali)-[~/archive/htb/labs/return]
└─$ kerbrute userenum --dc printer.return.local -d RETURN.LOCAL /usr/share/wordlists/seclists/Usernames/xato-net-10-million-usernames.txt
__ __ __
/ /_____ _____/ /_ _______ __/ /____
/ //_/ _ \/ ___/ __ \/ ___/ / / / __/ _ \
/ ,< / __/ / / /_/ / / / /_/ / /_/ __/
/_/|_|\___/_/ /_.___/_/ \__,_/\__/\___/
Version: v1.0.3 (9dad6e1) - 03/23/23 - Ronnie Flathers @ropnop
2023/03/23 10:13:02 > Using KDC(s):
2023/03/23 10:13:02 > printer.return.local:88
2023/03/23 10:13:08 > [+] VALID USERNAME: administrator@RETURN.LOCAL
2023/03/23 10:13:12 > [+] VALID USERNAME: printer@RETURN.LOCAL
2023/03/23 10:13:45 > [+] VALID USERNAME: Administrator@RETURN.LOCAL
2023/03/23 10:14:53 > [+] VALID USERNAME: Printer@RETURN.LOCALI had kerbrute running in the background for about an hour, and was unable to find any user