Small introduction to ROP and format string

As the title indicates, this is a very small introduction to return oriented programing (ROP) and format strings for people that don't yet know what this techniques are and what they are used for.

This post is meant for people willing to understand what this 2 exploitation techniques are so experts will get bored only seeing the title :).

Defcon 2015 Quals - mathwhiz solution

Category: Baby's First Points: 1

The information given to us:

mathwhiz_c951d46fed68687ad93a84e702800b7a.quals.shallweplayaga.me:21249

After connecting to it we can see it's giving us mathematical operations and he's waiting for the result. The solution is pretty easy. Get the data and pass it to python eval and return the result to the server.

Defcon 2015 Quals - Babyecho Writeup

This write-up is made by boogy of the on_est_pas_contents ctf team

This was an cool challenge which was worth 1 point. But nevertheless we enjoyed solving it. The binary is 32bit and striped: