Posts tagged with write-up
Lonely Island was one of the tasks on FAUST CTF 2021.
This task was a multiplayer FPS game based on Godot engine. This is something you don’t see on CTFs often, let alone on attack-defense ones. One notable example I can think of is Pwn Adventure on Ghost in the Shellcode CTF many years ago. Although Pwn Adventure was considerably more complex, it was a jeopardy competition, and yet Lonely Island appeared on an attack-defense CTF.
printf was a pretty typical pwn task: you get binary, libc, network address, and you have to gain an RCE. The vulnerability is an unsafe
allocawhich allows one to cross the gap between stack and libraries.
DevMaster 8000 and DevMaster 8001 were sandbox challenges on Google CTF 2019 quals.
“If on a winters night a traveler” was a pwn task on 0CTF/TCTF Quals 2019. You have to pwn a custom buggy encryption algorithm for Vim.
Sixology was a reverse task which 2 teams managed to solve during the CTF. You can find summary section (TL;DR) as well as some links in the end of write-up.
Elastic cloud compute (memory) corruption (or EC3 for short) was a binary pwn task on recent DEF CON CTF 2018 Quals.
We are given an
x86_64ELF binary and remote server address. The goal is to gain remote execution and read the flag.
“slot machine” was a hardware task in the reverse-engineering category on Google CTF Finals 2017, which took place in Zurich back in October 2017.