HackTheBox - Legacy
Description
Hello hackers, I hope you are doing well. We are doing Legacy from HackTheBox. The machine is running an old version of windows with SMB, we use a module from metasploit to get access.
Enumeration
nmap
We start a nmap scan using the following command: sudo nmap -sC -sV -T4 {target_IP}.
-sC: run all the default scripts.
-sV: Find the version of services running on the target.
-T4: Aggressive scan to provide faster results.
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Nmap scan report for 10.10.10.4
Host is up (0.29s latency).
Not shown: 997 closed tcp ports (reset)
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 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: mean: 4d23h58m06s, deviation: 2h07m16s, median: 4d22h28m06s
|_smb2-time: Protocol negotiation failed (SMB2)
|_nbstat: NetBIOS name: LEGACY, NetBIOS user: <unknown>, NetBIOS MAC: 00:50:56:b9:38:02 (VMware)
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
|_ message_signing: disabled (dangerous, but default)
| smb-os-discovery:
| OS: Windows XP (Windows 2000 LAN Manager)
| OS CPE: cpe:/o:microsoft:windows_xp::-
| Computer name: legacy
| NetBIOS computer name: LEGACY\x00
| Workgroup: HTB\x00
|_ System time: 2022-08-21T14:04:36+03:00
We have a windows XP machine running SMB.
Foothold
Searching for windows XP SMB exploit we find that there is a metasploit module named (MS08–067) allowing us to get remote code execution.
Let’s fire up metasploit and use the following module exploit/windows/smb/ms08_067_netapi
After setting the lhost and rhost options, we run the exploit and get a reverse shell with system privileges.
Thank you for taking the time to read my write-up, I hope you have learned something from this. If you have any questions or comments, please feel free to reach out to me. See you in the next hack :).