Writeups | Status 418

UofTCTF 2025

Out of the Container

Misc

The problem asks us to download a Docker image named `windex123/config-tester` and check it out. If we attempt to download it using `docker pull windex123/config-tester`, we will get an error that the tag `latest` has not been found. This is our first obstacle. First, we need to access Docker Hub...

UofTCTF 2025

Racing

Misc

The problem provides us the source code of a `C` program and a machine to be connected via `SSH`. The machine contained an executable of the source code provided with the `setuid` flag enabled inside the `/challenge` folder. It also contained a file `flag.txt` on the system's root. By looking at...

UofTCTF 2025

Racing 2

Misc

This problems builds on the problem Racing. Once again, we are given the source code for a `C` program and a machine to connect to via `SSH`. The machine contained an executable of the source code provided with the `setuid` flag enabled inside the `/challenge` folder. It also contained a file...

0xL4ugh CTF

My Vault

Crypto

This problem provides us with an encryption code and three encrypted messages: encrypted_friend1.txt, encrypted_friend2.txt, and encrypted_friend3. In the problem description, the author states that his encryption message is very secure, specially because he uses a very clever format for generating...

0xL4ugh CTF

Manifesto

Web

This problem provides us with the source code for a website about the benefits of the Clojure programming language. As expected, the website is written in Clojure as well. The first thing we will notice when entering the website is that it has a login form. Since we have access to the source code,...