Tags: crypto 

Rating: 3.0

## Full WriteUp

Full Writeup on our website: [https://www.aperikube.fr/docs/tamuctf_2020/652ahs/](https://www.aperikube.fr/docs/tamuctf_2020/652ahs/)

## TL;DR

The challenge was intended to be a timing side-channel attack but due to a bad implementation I was able to make the service crash when I guess an answer correctly, which allowed me to recover all the expected answers.

Original writeup (https://www.aperikube.fr/docs/tamuctf_2020/652ahs/).