decompile an app binary to get back to source code

Is there anyway to take a binary - even signed by yourself, and get back to the code? I'm trying to recover something that I deleted a while ago... but have the binary here.

Any ideas?


You can disassemble a binary and get back assembly source, but there is no way to get back your original Objective-C structured source code.


EDIT: You may want to give Hopper a try. I didn't try it personally yet but Mike Ash says it's good.