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README.md

babyfengshui

This was a pwnable worth 150 pts that I wrote for the 33C3CTF organised by Eat, Sleep, Pwn, Repeat

Every script used for the deployment of the challenge are included, you can just execute

make clean && make all
./build_docker.sh && ./run_docker.sh

and try out the exploit by running

python exploit.py local

Vulnerability (Spoilers)

The vulnerability in the binary is a custom overflow check which makes a wrong assumptions that two subsequent allocations on the heap will be placed next to each other

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33C3 CTF binary challenge

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