Christmas Cyber Security Challenge 2013 – Kings of Orient

This challenge was relatively straightforward, look at the music piece and realise that green is a dot and red is a dash (and black is a delimiter). With that you get the following string:

RVFR4KINQBGHPKE4SEBZZEZBEFER

That looks useless, let’s try rot13:

EISE4XVADOTUCXR4FROMMRMORSRE

Much better, ditch the ‘EIS’ (code is …) and the FROMMRMORSRE and you’re left with:

https://cybersecuritychallenge.org.uk/E4XVA.UCXR4