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PatchDiff

Tool name: PatchDiff
Rating: 3.0 (1 vote)
Author: Nicolas Pouvesle                        
Website: http://cgi.tenablesecurity.com/tenable/patchdiff.php
Current version: 2.0.5
Last updated: August 19, 2008
Direct D/L link: Locally archived copy
License type: Free
Description: PatchDiff2 is a plugin for the Windows version of the IDA dissassembler that can analyze two IDB files and find the differences between both. PatchDiff2 is free and fully integrates with the latest version of IDA (5.2).
The plugin can perform the following tasks :

* Display the list of identical functions
* Display the list of matched functions
* Display the list of unmatched functions (with the CRC)
* Display a flow graph for identical and matched functions

The main purpose of this plugin is to be fast and give accurate results when working on a security patch or a hotfix. Therefore this tool is not made to find similar functions between two different programs.
Patchdiff2 supports all processors that IDA can handle and is available in two versions: 32 bit and a 64 bit.

Update:

08/19/2008: PatchDiff 2.0.5 released:

* Adds string references to the signature
* Fixes IPC close when option is disabled

07/22/2008:PatchDiff 2.0.4 released:

* Requires at least IDA 5.2
* Adds save backup results to IDB
* Adds Unmatch/Set match/Switch match submenus
* Adds "pipe" support to keep second IDA instance open
o menu Options/PatchDiff2 to disable/enable it per IDB
o registry HKLM\SOFTWARE\Tenable\PatchDiff2 IPC (DWORD) for the default setting
* Uses demangled function names
* Ignores duplicated names
Related URLs: No related URLs have been submitted for this tool yet


Screenshot:
Screenshot of PatchDiff


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