An almost 3 week long CTF with beginner to hard challenges. Very high quality challenges with every week a new batch of challenges to try.
Unlock Train Data
Reverse Engineer an APK to find the Java code that encrypts the flag. Find the vulnerability in the encryption algorithm to brute-force the key
A medium Mobile reversing challenge for which I had an unintended solution to find 3/4 flags. It's a funny trick and I'm sure this can be used to solve some other challenges
Stop the Heist
A medium 3 part challenge, finding traces of an attack. Explore a Windows filesystem and network capture to find every step and flags along the way
Recover Pet Data
A medium web challenge with JSON Web Tokens for authentication. Upload your own public key to the server to verify tokens with your own keypair to forge JWTs