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 Forums >>  IDA Pro  >>  Best way to understand multiple firmware versions?

Topic created on: May 27, 2009 08:40 CDT by d00f .

I'm working on embedded devices where there are many different revisions of the firmware. Most are very very similar with a minor bugfix or calibration (country/market specific) change. I'm looking into idb2pat for this purpose but is there a well accepted method of auto-naming/auto-commenting the functions and routines I've spent the last 6 months decyphering?

  phn1x     May 27, 2009 09:57.31 CDT
IDACompare is a plugin designed to compare and match up equivalent functions across two IDA databases. IDACompare was primarily designed for analyzing changes across malcode variants, it should also find good use when conducting patch analysis.

Once function matches have been made, names can be ported across disassemblies, or sequentially renamed in both.

http://labs.idefense.com/software/static.php#more_idacompare

  n4v4r4j   May 28, 2009 23:55.47 CDT
otherwise you can use DarunGrim and just do function comparison !! It creates a DB file and you can write a python script to read the db file and update the function names !!
yes it won't help you to copy the comments !! I have done the same thing for vxworks images !!

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