Security Stories

PicoCTF 2019

https://2019game.picoctf.com/problems

Shell server: shell1.picoctf.com

Note: The challenges in this repository were completed during the CTF, with the exception of binary-exploitation/NewOverflow-1 (more information in the writeup). Some challenges have been revisited and solved in the interest of producing a write-up to document my process, however, most challenges were omitted. I've chosen to focus on challenges in which I felt I learned a lot, or ones that became an important foundation for later events.

Write ups:

binary exploitation

reverse engineering

I decided against including the vault challenges, as they seemed pretty straightforward. Instead, I've decided to focus on the asm challenges that I was able to solve, as this was my introduction to reversing binaries.