Hi,
Around here exist truly intersting tools for Binary Diffing, useful for Vulnerability Research and or Malware Analysis.
The two most famous tools are:
- Sabre Security BinDiffv2
- eEye Binary Diffing Suite (EBDS)
The eEye Binary Diffing Suite (EBDS) is a free and open source set of utilities for performing automated binary differential analysis, but has a little problem, seems to be explicitly developed for IDA 5.0, and no other IDA’s versions are supported.
But there is a trick to avoid that an make it working with all IDA’s Versions.
Open with Regedit the following RegKey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
Uninstall\IDA Pro_is1
And change the Key Entry DisplayName with the string IDA Pro Standard v5.0 or IDA Pro Professional v5.0
and..
Happy Diffing! 
See you to the next post..
[...] India Broadband Forum wrote an interesting post today on Eeye BinDiffing TrickHere’s a quick excerptHi, Around here exist truly intersting tools for Binary Diffing, useful … little problem, seems to be explicitly developed for IDA 5.0, and no [...]