: Extract the entitlements from the original app using codesign -d --entitlements - TargetApp.app , strip out restricted production entitlements (like iCloud containers or explicit push notifications if using a free account), and apply them during your final code signing step.
ldid -e Payload/YourApp.app/YourApp > entitlements.plist
Here’s a high-level overview of what that involves and the typical tools used. Inject Dylib Into Ipa
This action generates a folder named Payload/ , containing the TargetApp.app bundle. Step 2: Copy the Dylib into the App Bundle
Ensure you signed the .dylib file before you signed the primary .app bundle. If the dylib lacks a valid signature matching the main app, iOS kills the process instantly. 2. Dylib Does Not Seem to Load Cause: Incorrect loading path inside the Mach-O header. : Extract the entitlements from the original app
: Check device logs via macOS Console app or Xcode. If you see a Signature Invalid error, ensure you signed the injected dylib before signing the main app binary. Also, ensure your dylib does not link against jailbreak-specific libraries (like /usr/lib/libsubstrate.dylib ) if deployed on a jailed device. 2. Missing Dependencies ( Library not loaded )
codesign -f -s "iPhone Developer: Your Name (TeamID)" --entitlements entitlements.plist Payload/TargetApp.app/YourLibrary.dylib codesign -f -s "iPhone Developer: Your Name (TeamID)" --entitlements entitlements.plist Payload/TargetApp.app/TargetApp Use code with caution. Step 6: Re-package zip -r PatchedApp.ipa Payload Use code with caution. 5. Modern Injection Methods (2026) Step 2: Copy the Dylib into the App
If you want to inject custom functionality, you'll need to create your own dylib. Here's how.
Copy your compiled libInjected.dylib directly into the .app folder. 4. Modifying the Binary Mach-O Load Commands
: Use a tool like optool or insert_dylib to add the necessary load command to the app's main executable. The optool command format is: