Modifying resources of self-checking exe

Originally Posted by redbull

Yeah you have to either
1. Patch the self checking routine as Cobi says
or
2. Figure out what hashing algorithm is used and find a "Hash Collision" for it using the new resources.

I recommend 1

there is a third way witch interest me.I'm not a pure cracker,i do not want
to spend much time to do a patch.I 'd like to hook the apis it called and change the return value,this is a programming way.

[taos]

Originally Posted by goldenegg

there is a third way witch interest me.I'm not a pure cracker,i do not want
to spend much time to do a patch.I 'd like to hook the apis it called and change the return value,this is a programming way.

But you forget something, there's not API func for CRC.
If you mean to hook internal func, then it's a very hard job, you must debug this internal func to know how it's calculate the CRC and what format use (decimal,HEX,string) to return the value that you want. it's more easy to patch because must be only a few bytes.