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I want to know how to create a PATCH for the difference file I got by comparing two binary files. $cmp -l > 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.
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The process of making changes to a binary and modify its instruction flow is called “patching a binary”. Hackers do this to bypass built-in protections, or to make the program behave in a different way to make the exploit development process go more smoothly.
Description. patch reads a patchfile that contains output from diff describing changes from an old text file to a new text file. patch then applies those changes to another text file. Typically, you use patch if you are keeping parallel versions of a file.
Diff and Patch are designed to work with text files, not arbitrary binary data. You should use something like bsdiff instead.
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If your repository, or package is using git you can make binary diff with
git diff --patch --binary old_dir patched_dir
Of course you can also use it with commits
git diff --patch --binary commit1 commit2
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JDIFF is a program that outputs the differences between two (binary) files.
Also you can use therdiff command.
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