decache: Pull Mach-O Objects out of dyld_shared_cache

A handy tool to pull object files out of the dyld_shared_cache for iOS.

I only have tested this with the iOS 12.3 dyld_shared_cache, so expect bugs if you're using older caches. As well, this only supports 64-bit Mach-O objects, so if you're using something else, roll up your sleeves and start patching.

Usage

• ./decache -D [dyld_shared_cache file] - Dump a directory, to stdout, of the Mach-O objects in the cache
• ./decache [dyld_shared_cache file] [desired shared object] [output file] - Extract the desired Mach-O object from the dyld_shared_cache.

Building

• Just type make. There shouldn't be external dependencies.

Why would you do this?

Why not?