Crypto 5 Flare-on Challenge 2019 Write-up Sep 28, 2019 Flare-on Challenge 2018 Write-up Oct 6, 2018 HITCON CTF 2016 Quals -- Hackpad Oct 11, 2016 AIS3 2015 pre-exam -- complete writeup Aug 6, 2015 SCTF 2014 -- Code400 Dec 9, 2014