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 Forums >>  Target Specific - General  >>  how to crate a PATCH for binary difference output

Topic created on: March 10, 2010 01:11 CST by sujitnist .

hi
i want to know how to create a PATCH for the difference file i got by comparing two banary files.
$cmp -l <old binary image file> <new binary image file> > output file name

i checked for text files 'diff" can be used to compare and generate a PATCH file
$ diff -u oldFile newFile > mods.diff  # -u tells diff to output unified diff format

i want to apply the PATCH on the old binary image file to get my new binary image file.

thank you
--sujit

  Silkut     March 10, 2010 06:01.19 CST
Hi,

RTFM: man patch ?
http://linux.die.net/man/1/patch

Hope this helps.

  comrade     March 16, 2010 01:58.50 CDT
For binary files, try some of the patcher tools on "Programmer's Tools" (aka ProTools). Too bad I can't find the site no more, I think its dead. Used to be a good site in late 90s/early 2000s for cracking/RE related tools.

  trufae   April 12, 2010 04:12.10 CDT
For binary files you need a binary diffing tool. I would recommend you two:

radiff: comes with radare1 and patch file is a radare script, so it's easy to modify the patch manually. (www.radare.org)

bdiff: c++ bindiffer and binpatcher. I think this is the one iphone-dev people uses. (sf.net/projects/bdiff)

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