[TippeX]

the AddD tag +Version aint at the end of the file now is it? ;p
if you looked at the end of the file and then thought about the number stored there you might get an idea of how to do away with a byte scan for 'AddD', and theres other methods to detect the variations in the securom itself, try section size matching, byte pattern matching import usage.. its all there, just start comparing exes