girby
Description
https://raw.githubusercontent.com/hitcon2014ctf/ctf/master/girby-86c7d5a294f9b8d67b2dc614ff143b70
https://dl.dropbox.com/s/ucgye5aroyqtswg/girby-86c7d5a294f9b8d67b2dc614ff143b70

Hint