Compare compiled .NET assemblies?

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Ways to Compare .NET Assemblies suggests

Commercial:

Free:

Existing compare tools like Beyond Compare (commercial) can do this by special configuration. Here’s how to do this for Beyond Compare:

  • Go to Tools → Options
  • Click New.., select “Text format”, click OK
  • Give it a name (say, EXE, or DLL), and specify the mask as *.exe or *.dll
  • Click on tab Conversion and select “External program (Unicode filenames)”
  • Under “Loading”, specify the path to ildasm and add %s /OUT:%t /NOBAR (i.e.: C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\ildasm.exe %s /OUT:%t /NOBAR)
  • Make sure to check disable editing.
  • Click Save, then Close
  • Restart BC and open two exe files to compare, it should decompile into ilasm automatically now.

You can also add syntax highlighting to this new format. I plan to send the syntax file to them so that it’ll become available to share.

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