Originally posted by Pichu
If you are talking about just going .exe to .gz yea; it won't work. There are methods out that deal with actually modifying the data in a file to produce what I am talking about. Everything is a simple digit or two within the first part of a file to determine whether or not they are text, png, exe, rar, etc files.
But the guy wouldn't go through that much trouble just for one bot.