[https://devcraft.io/posts/2017/04/09/start-hard-asis-ctf-quals-2017.html](https://devcraft.io/posts/2017/04/09/start-hard-asis-ctf-quals-2017.html)

Original writeup (https://devcraft.io/posts/2017/04/09/start-hard-asis-ctf-quals-2017.html).