Allows you to create a Logos tweak project in Xcode, which automatically handles injection and resigning during build.
Choose the "iphone/tweak" template, name your project, and implement your hooks. The build process will generate a .dylib ready for injection.
To load the dylib, you need to update the IPA's dyld load libraries. You can do this by adding the following line to the IPA's Info.plist file:
Before starting, you need:
theotool -e /path/to/app.ipa /path/to/output/folder Inject Dylib Into Ipa
If you prefer to perform the injection manually (usually on macOS), the process generally follows these steps:
Re-sign the primary binary using the extracted entitlements:
Regardless of the tool, the technical steps are usually as follows: Extract the IPA : Treat the IPA as a ZIP file and unzip it to reveal the Add the Dylib : Move the file into the folder inside the Modify the Mach-O Binary
If you're performing injection on a Mac (the traditional approach), you'll need: Allows you to create a Logos tweak project
While injecting dylibs is a standard practice in the "tweaked app" community, it comes with risks:
./optool install -c load -p "@executable_path/your.dylib" -t Payload/TargetApp.app/TargetApp Use code with caution. -p : Path to the dylib inside the app bundle. -t : The path to the main executable of the app. 4. Patch the Dylib Dependencies (Optional)
Manual injection provides precise control over the app bundle structure, which is critical for complex tweaks or security auditing. Step 1: Extract the IPA File
Simply placing the dylib inside the application bundle does not force the application to execute it. You must modify the main executable's Mach-O header to include a new load command ( LC_LOAD_DYLIB ) pointing to your library. Option A: Using insert_dylib (Recommended) insert_dylib adds a load command to the binary path. To load the dylib, you need to update
Injecting a dylib into an IPA comes with some challenges and limitations:
: A macOS-only utility that packages an IPA and a Debian file (tweak) into a single, modified IPA. 3. On-Device (iOS)
Injecting a dylib alters the binary's execution flow without requiring access to the original source code. 1. Prerequisites and Environment Setup