[https://infosec.rm-it.de/2018/12/09/hxp-ctf-2018-time-for-h4x0rpsch0rr/](https://infosec.rm-it.de/2018/12/09/hxp-ctf-2018-time-for-h4x0rpsch0rr/)

Original writeup (https://infosec.rm-it.de/2018/12/09/hxp-ctf-2018-time-for-h4x0rpsch0rr/).