https://vgnshwar.github.io/tags/ctf/Recent content in Ctf on ~Vigneshwar SundararajanHugoen-usMon, 19 May 2025 00:00:00 +0000https://vgnshwar.github.io/blog/tryhackme-brains/Mon, 19 May 2025 00:00:00 +0000https://vgnshwar.github.io/blog/tryhackme-brains/<p>Room Link: <a href="https://tryhackme.com/room/brains">https://tryhackme.com/room/brains</a></p> <h3 id="1-red-exploit-the-server">1. Red: Exploit the Server!</h3> <p><code>The city forgot to close its gate. Welcome to the Brains challenge, part of TryHackMe’s Hackathon! All brains gathered to build an engineering marvel; however, it seems strangers had found away to get in.</code></p> <p><img src="https://vgnshwar.github.io/images/thm-brains/1.png" alt="Image"></p> <p>As the <strong>Ping</strong> output shows, the TTL (Time to Live) value was 63. This is a strong indicator that the target machine was running a Linux distribution. With this information in hand, I proceeded to port scanning using <strong>nmap</strong> to discover open services.</p>https://vgnshwar.github.io/blog/tryhackme-billing/Fri, 18 Apr 2025 00:00:00 +0000https://vgnshwar.github.io/blog/tryhackme-billing/<p><code>Some mistakes can be costly. Gain a shell, find the way and escalate your privileges! Bruteforcing is out of scope for this room.</code></p> <p>Room Link: <a href="https://tryhackme.com/room/billing">https://tryhackme.com/room/billing</a></p> <h3 id="1-enumeration">1. Enumeration</h3> <p><img src="https://vgnshwar.github.io/images/thm-billing/1.png" alt="Image"></p> <p>Identifying whether a target machine operates on <strong>Linux</strong> can be facilitated by examining the TTL (Time to Live) value during a ping test. A TTL value of 63 typically indicates a Linux system, enabling a more tailored enumeration strategy that is.</p> <p><img src="https://vgnshwar.github.io/images/thm-billing/2.png" alt="Image"></p>