Legacy

Machine Level: Easy OS: Windows

Scanning

I ran an aggressive NMAP scan and found that it was a Windows XP box.

ajread@aj-ubuntu:~$ nmap -A [TARGET IP]
Starting Nmap 7.80 ( https://nmap.org ) at 2023-01-21 13:38 EST
Nmap scan report for [TARGET IP]
Host is up (0.015s latency).
Not shown: 997 closed ports
PORT    STATE SERVICE      VERSION
135/tcp open  msrpc        Microsoft Windows RPC
139/tcp open  netbios-ssn  Microsoft Windows netbios-ssn
445/tcp open  microsoft-ds Microsoft Windows XP microsoft-ds
Service Info: OSs: Windows, Windows XP; CPE: cpe:/o:microsoft:windows, cpe:/o:microsoft:windows_xp

Host script results:
|_clock-skew: 5d01h57m38s
|_ms-sql-info: ERROR: Script execution failed (use -d to debug)
|_nbstat: NetBIOS name: LEGACY, NetBIOS user: <unknown>, NetBIOS MAC: 00:50:56:b9:e6:f7 (VMware)
|_smb-os-discovery: ERROR: Script execution failed (use -d to debug)
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
|_smb2-time: Protocol negotiation failed (SMB2)

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 57.36 seconds

Initial Access

I found this website that helped guide me for what to do next and exploit MS08-067 for Netapi. In metasploit, I had to set the target to be Windows XP SP3 English (AlwaysOn NX) or else it would not work. After running the exploit, I was dropped into a system shell!

meterpreter > pwd
C:\WINDOWS\system32
meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM

And I was able to retrieve the user and administrator flag! There was no need to conduct privilege escalation on this box.