SECCON 2016 Online CTF ran for just 24 hours. This defintely makes for a more intense competition, especially since the challenges did not seem to be any easier than the ones at 48-hour events.

Lots of very interesting problems to solve and technologies to learn. I came very close on checker and uncomfortable web, but ran out of time. Oh well, there is always the next time.

Here are the writeups for the 4 challenges that I solved:

Vigenere

VoIP

Anti-Debugging

Memory Analysis