ZeroDays CTF 2015

ZeroDays CTF is one of the best-known competitions in Ireland, as well as one of the largest in-person capture the flag events in the world. This ZeroDays CTF was the first one ever and was held in Dublin. 

This CTF was based around a Zombie apocalypse as during this period TheWalkingDead was one of the most popular shows around. All challenges were based around a Zombie theme and had challenges that included Physical, Forensics, Exploitation, and more types of challenges.

One of my favorite challenges was called WhiteNoise, The Back story was that a static communication came over the radio and it contained an audio track that when listened to only contained static. Further analysis of the file using different spectrum viewing software allowed me to see the flag was hidden in the audio as steganography with the flag “White Walker” hidden audio file