[https://infosec.rm-it.de/2017/11/06/hitcon-2017-ctf-babyfirst-revenge/](https://infosec.rm-it.de/2017/11/06/hitcon-2017-ctf-babyfirst-revenge/)

Original writeup (https://infosec.rm-it.de/2017/11/06/hitcon-2017-ctf-babyfirst-revenge/).