Challenges:Ĭhallenge 1 ( GUASS RIFLE ) - A book cipher requiring you to parse various words from lines in booksĬhallenge 2 ( RADIATION POISONING ) - An LSB Stego QR code that needed to be decoded and then parsedĬhallenge 4 ( FACSIMILE ) - A audio fax that needed to be decodedĬhallenge 5 ( GREEN SKIN ) - A literal jigsaw puzzle representing 4 sides of a puzzle piece with 3 charactersĬhallenge 6 ( WHIRLPOOL ) - A multiple times rotated image that needed to be ‘unrotated’Ĭhallenge 7 ( SCORCHED EARTH ) - An Office document with a weak passwordĬhallenge 8 ( SMOG AND SMOKE ) - A Modified playfair cipher that needed to be recronstructed based on solar systems After this writeup I shall resume my social responsibilities )Įach of the various problems took my many hours of frustrating, wallpunching, facepalming and omgnoobing to complete, however I will just go over the solutions to each of them without the hours of frustration - the tl dr of each one if you will. To have developed this CTF in a manner that allows people who do not work with crypto/hackz0r wizardry to still have a chance of solving the problems is awesome! I didn’t solve all of the problems, but I did spend far too much of my free time and apologise to the many bars I had to let down during that time. First off let me just say a big thank you to the MWR guys who put this CTF together, usually I don’t partake in CTFs because the skillset required is usually out of my grasp (IANAP).

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