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

Its probably worth pointing out that there are no casual "pirates". Casual users cannot download your app from the app store without buying it. All the DRM-removal schemes require to be run on a legitimately purchased copy.

As to looking at the bundle for changes, as I recall all you need to do is step through the link-loader commands and ensure that the code bundle is still tagged as encrypted. No need to compare it with anything. You'll need to read about Mach-O file format to do this, but thats not difficult, its all documented on developer.apple.com