HackPack CTF 2021 took place on the 16th through the 17th of April, 2021, and, while I admit I was late to the competition, I had a lot of fun with the challenges I was able to complete!

The first challenge I completed, better-pam, was a faulty authentication system which contained a timing attack introduced by strlen.

The second challenge I completed, mind-blown, was a brainfuck interpreter which failed to perform a bounds check on a stack-contained memory tape, leading to remote code execution with a defeated stack cookie.