iOS/macOS Research Swiss Army Knife

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Tool for reverse engineering macOS/OS X

A latest buildable and debuggable Objective-C runtime (objc4-818.2) project.

🔬 A Swift library for parsing mach-o files to obtain various information.

A macOS utility to extract dynamic libraries from the dyld_shared_cache of macOS and iOS.

Function hooking for macOS

Mach-O file parser.

A macOS command-line tool to dump the contents of dyld shared cache files.

CLI to search and download Apple open source tarballs from opensource.apple.com (dyld, objc4, CF, libclosure).

DYLD CodeQL build scripts

A backport compatibility layer for old macOS. Out of the box: patches iWork from May 2016 to run on OS X 10.9 Mavericks. Under the hood: Mach-O bind weakening + stub dylib injection. Pair with Claude Code to back-port other newer-OS apps.

This is an application that proofs static libraries load faster than dynamic libraries on iOS

Understanding the load order of binaries with DYLD_INSERT_LIBRARIES

Fix for The Binding of Isaac (Rebirth/Afterbirth+) crashing on launch on modern macOS. A tiny signal-handler shim repairs a stale-dyld bug in Steam's DRM loader so the game starts normally — no game files modified.

Keychain-disabling loader for Skype 7

🍎Apple's dyld fixed for the general public and Big Sur, part of a trick. [Deprecated]

In-memory loading and executing Mach-O executable.

Filesystem vendoring macOS libc shim

Working version of dyld_shared_cache from dyld by Apple