How to programmatically determine if DRM was removed from iPhone application?

Question

How can I determine if DRM was removed from iPhone application bundle (to protect it from piracy)?

Answer 1

To my knowledge, there's only one way to remove DRM: Crackulous.

So to find out what to look for in a cracked application, I would run Crackulous on your app and compare the app bundles. It should be fairly easy to determine what's been changed by looking at filesizes and running a diff on the files in the bundle.

Once you know what the changes are and to what file(s), just look for those changes in your application to determine if the application has been cracked.

If you find out exactly which files should be checked, please post your findings here so others can benefit from your research.