CrySyS Security Challenge 2022

secchallenge crysys CTF pwn crypto web hardware misc reverse
Published on 16 Mar 2022

 

This blogpost contains my writeups for the CrySyS Security Challenge 2022!

Flags are HIDDEN until the end of the semester due to University reasons.

The tables below contain my solution for some of the challenges. I did not managed to solve a lot, especially from the Crypto category, but since I suck at crypto, this was expected. The Solved column indicates the challenges I managed to solve during the competition.

Crypto

Challenge Solved
GRANNYGMA ❌
Encrypted Display Control ❌
Democracy ❌
VPScoin ❌
White box ❌

Pwn

Challenge Solved
che%s%s ✅
heap-quest ❌
pawned ❌
Black box ❌
FORCEDFLAG ❌

Reverse

Challenge Solved
Layers ✅
falleen system ✅
Advent of web3 ❌
Exceptional ❌
Dimensions ❌

Web

Challenge Solved
Instant Development Company ✅
Snek ✅
Waffles ✅
Note Keeper ✅
CoreQuest ❌

Hardware

Challenge Solved
Flagshift ✅
Broken ✅
Suspicious van ❌
Martian Quest: The Terraform ❌
Drive to checkered flag ❌

Misc

Challenge Solved
Office Hazard ✅
Dangerous Volcano ✅
G.O.A.T. 🐐 ✅
refl🤣gger ❌
piecemaker ✅

all tags

CTF crypto crysys dnSpy hardware misc pwn reverse secchallenge secchallenge22 web