The challenge wasn’t that hard infact just open up OllyDBG and you would immediatly see that this is a binary compiled with perl2exe technology. Basically it convert perl code into executable, so we can easly come back to original code by using this python script: http://pastebin.com/LiiMuN0K

Now just give the challenge’s executable as argument and take the flag in comment on _main.pl file.

Razor4x