Google CTF | Reverse a Cellular Automata

Author: telwell
Date: July 7, 2019
Tags: ctf, ctypto
Categories: ctf

This is a writeup for one of the challenges from the Google CTF which I participated in a few weeks ago. My friend Chris and I were finally able to get this flag after a lot of hitting our heads together. The Reverse a Cellular Automata challenge (may not be up in the future) was … Read More

A Simple ROP Exploit | poor_canary writeup

Author: telwell
Date: March 7, 2019
Tags: ctf, pwntools, rop
Categories: Coding, ctf

HXP 2018 has a “baby” challenge called poor_canary which was my first actual ROP exploit. If you want to follow along you’ll need to download and install the hxp 2018 vm image and install it locally. If you’re on a mac, you might need to port forward in order to get the image working properly. … Read More