Writeup: Advent of CTF 4 – Obfuscation

The fourth challenge hints on there being something hidden There are people who think you can hide important things by making it hard to read. The page welcomes us with the following message: Let's try inspect the page with Developer tools. We immediately notice that JavaScript is in play here. Navigating to the Debugger section … Continue reading Writeup: Advent of CTF 4 – Obfuscation

Writeup: Advent of CTF 3 – JavaScript

This challenge requires that we bypass the login mechanism used on https://03.adventofctf.com. Let's see what Developer tools has to offer. I tried filling in the form with username test password test but I see no activity in Network tab which is odd for HTTP(s) traffic. I went ahead and inspected the source and found a … Continue reading Writeup: Advent of CTF 3 – JavaScript

Writeup: Advent of CTF 2 – CookieMonster

For the 2nd challenge we are required to bypass the login mechanism used on this webpage https://02.adventofctf.com. This is the page we get when we navigate to the URL. I tried logging in with a random username:password test:test. Since we are logged in as guests, we do not see the flag. Using developer tools, noted that … Continue reading Writeup: Advent of CTF 2 – CookieMonster

Writeup: Advent of CTF 1 – The Source

We are asked to visit https://01.adventofctf.com to start the challenge. This is what we get when we navigate to the site. A password is required, which we obviously do not have yet. The page hints on finding a flag. Let's check Developer Tools. What immediately catches my eye is the encoded string YWR2ZW50X29mX2N0Zl9pc19oZXJl in the source code … Continue reading Writeup: Advent of CTF 1 – The Source