DEF CON CTF 2021 Quals baby-a-fallen-lap-ray writeup
Outline:
- Introduction
- First impressions
- Architecture reversing
- Binary Ninja plugin development
- Reverse engineering the actual challenge
- Exploiting the challenge
- Commentary about tooling
- Other writeups
Introduction
This weekend, Samurai played the DEF CON CTF Qualifier event. We had a great time playing; much thanks to the organizers for putting on a great event! Many thanks to my teammates, it was awesome playing with you all!
One of the challenges this weekend was called baby-a-fallen-lap-ray
. It was categorized as a pwn
challenge, and it made a comment about being ‘the return of the parallel machine (or is it?)’.
Continue reading “Reversing and exploiting a program running in an undocumented VM”