detecting clones by comparing exe files

[Uri Blass]

I wonder if there is a program that compare exe files and find the biggest common string that both exe files share and I wonder if this can be effective to help detecting clones.

From the discussion about strelka:

"...try to find the following sequence of bytes in Strelka:
AD 8E 57 4E 87 11 E7
You can find it ONLY in Strelka and in all versions of Rybka"

Note that in case that there are some common strings that the exe of free programs that are not clones share(for example because of sharing nalimov code) it is possible to take them out of the equation so we practically need a program that take 2 programs and find the longest string that is common to both of the exe except specific strings that we can mention.

Uri