ctf tasks

These are some challenges I made for CTF competitions organized by hxp. The numbers are a very rough difficulty estimate on a scale from 0 to 9.
Some of these are packaged in VMs made after the CTF to keep the challenges "running". See here.

hxp CTF 2018

Date: 2018-12-07 12:00Z +48h.

cryptography


hxp CTF 2017

Date: 2017-11-17 12:00Z +48h.

cryptography


TUMCTF 2016

Date: 2016-09-30 16:00Z +48h.

cryptography

exploitation

reversing


TUMCTF Teaser 2015

Date: 2015-10-24 12:00Z +24h.

cryptography