weekly challenges 2021 - week1

Beginner friendly weekly challenges - binary exploitation basics

We encourage you to post writeups.
Here is a guide for the same.

400

Challenge 4

pwn

This is an actual exploitation challenge where you are going to exploit some vulnerability. Use a decompiler like IDA(https://hex-rays.com/ida-free/) or Ghidra(https://ghidra-sre.org/) to get a peek at the pseudo-code of the challenge. It should speed up your analysis. You have to somehow execute the function which prints the flag.

http://52.172.254.231:25000/static/chall4/chall4

nc 52.172.254.231 17489