CTF - Billu Box Walkthrough

Lab Environment

 Attacker's Machine - Linux kali 4.13.0-kali1-amd64 #1 SMP Debian 4.13.10-1kali2 (2017-11-08) x86_64 GNU/Linux

 Vulnerable Machine - Billu Box

 Proof Of Concept

 Scanning Phase
  • Route -n (to know the gateway) i.e 172.16.60.2
  • arp-scan --local (to scan for the machines connected to the network)
  • vulnerable machine IP - 172.16.60.149



   Now i will use nmap for further scanning the machine's IP
  •    nmap -sS -sV -sC 172.16.60.149
 

    Port 80 is open and HTTP service is active . so i can browse the IP .

 
  
  I got the homepage and login panel . I have to scan more to get login credentials.
  • dirb http://172.16.60.149 /usr/share/wordlists/dirb/big.txt
        ( I have used dirb command to enumerate some url's by using another     wordlists named big.txt , the path for that wordlist is /usr/share/wordlist/dirb/big.txt)


 

   Highlighted url's gave me some result that seems to be interesting 

   URL's
  •    http://172.16.60.149/test
  •    http://172.16.60.149/phpmy/changelog
     Browsing to the “test” file returned that the “file” parameter is empty.

Second url gave me the login panel for phpmyadmin

With the Local File Read vulnerability we can potentially disclose sensitive           information/credentials used by the Phpmyadmin for set up.
 Since we know the web root directory, we can easily disclose the config file “config.inc.php” used by Phpmyadmin.
 web root directory - /var/www/phpmy/config.inc
 so i used  curl command for sending a POST request 
 command
  curl -X POST --data "file=/var/www/phpmy/config.inc.php" http://172.16.60.149
  I finally got the username and password and scanning phase already revealed     ssh service on open port 22.


    i logged in ssh service using - ssh root@172.16.60.149
   username - root
   password -roottoor
   and entered in machine as a root user

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