Hook a C function

Question

I want to hook the function AudioUnitInitialize to grab the Audio Unit of an application by injecting a bundle at the application start.
I found an example (http://pastie.org/1882125) but it uses the function MSHookFunction to replace the function names. The problem is that I want to replace the functions on Mac OS X, not on iOS.
Is there another way to hook C functions?

MobileSubstrate is open source so you could just look at how saurik did it in MSHookFunction — toasted_flakes, Apr 08 '13 at 14:37
Correct me if I'm wrong, but isn't CydiaSubstrate.framework available on OS X too? — , Apr 08 '13 at 14:40

score 1 · Accepted Answer · answered Apr 08 '13 at 14:43

1

If you look closely, you can find out that MobileSubstrate runs on OS X as well.

answered Apr 08 '13 at 14:43

Now I got everything with this tutorial (http://iphonesdkdev.blogspot.de/2012/06/how-to-install-thoes-under-xcode-44.html). My problem is that when I hook the method `AudioUnitInitialize`, I can't use the parameter `inUnit`. What's the problem here? The application crashes then. – Paul Warkentin Apr 09 '13 at 19:29
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@qPaul I don't know, but that's certainly not something that should make you unaccept my answer - I answered your question. Ask a new question, because you **do have** a new one - about using the API. – Apr 09 '13 at 19:54

Hook a C function

1 Answers1