puzzle Description https://raw.githubusercontent.com/hitcon2014ctf/ctf/master/puzzle-81c5e9bdb219efbe4eb9b194fb33f7e6.jpg https://dl.dropbox.com/s/wh0uset031ivgsq/puzzle-81c5e9bdb219efbe4eb9b194fb33f7e6.jpg Hint If you have found the flag but it contains characters hard to recognize, pm admin and get correct flag. Q: Hey I can see "HITCON{" prefix, is that enough? A: No, you can and have to extract more. Flag Format: HITCON{lllluuul_luul_udd} lowercase / uppercase / digit