Writeups

Hardest pwn challenge of the CTF. A simple vulnerability lead to a BOF, but the path to RCE was really interesting

This is one of the first heap related kernel challenges I solved, so this writeup could be inaccurate in some spots.

Interesting pwn challenge regarding the exploitation of a simple stack BOF.

Heap challenge with the goal of achieving arbitrary write to read the flag from the heap.

This is an hard pwn challenge I wrote for Compete Against TeamEurope, this CTF was part of the training for ECSC2024. The vulnerability is a double-free triggerable through a race condition. No bruteforce is needed.

Pwnymalloc is a nice custom allocator challenge from UIUCTF 2024. The vulnerability was about an incorrect handling of the prev_size during consolitation.