Inject Dylib Into Ipa !free! -

%end %ctor NSLog(@"Dylib injected successfully!");

#import <objc/runtime.h> static void (*orig_viewDidLoad)(id self, SEL _cmd); static void new_viewDidLoad(id self, SEL _cmd) NSLog(@"Hooked viewDidLoad"); orig_viewDidLoad(self, _cmd); Inject Dylib Into Ipa

((constructor)) void init() Method original = class_getInstanceMethod(NSClassFromString(@"ViewController"), @selector(viewDidLoad)); orig_viewDidLoad = (void*)method_getImplementation(original); method_setImplementation(original, (IMP)new_viewDidLoad); %end %ctor NSLog(@"Dylib injected successfully

An IPA (iOS App Store Package) is the standard archive format for iOS applications. Under the hood, it is essentially a ZIP file containing compiled machine code, resources, and a signature. Injecting a custom dylib allows security researchers, pentesters, and hobbyists to alter an application’s behavior without having access to its source code. codesign -f -s "iPhone Developer: Your Name (XXXXXXXXXX)"

codesign -f -s "iPhone Developer: Your Name (XXXXXXXXXX)" --entitlements entitlements.plist inject.dylib codesign -f -s "iPhone Developer: Your Name (XXXXXXXXXX)" --entitlements entitlements.plist SampleApp # Then re-sign all other binaries and frameworks inside the .app Navigate back to Payload/ ’s parent directory:

: The dylib must be present at an absolute path on the device (e.g., /Library/MobileSubstrate/DynamicLibraries/my.dylib ). This is why this method is common in jailbreak tweaks. 2. IPA Injection via optool or insert_dylib These tools directly modify the Mach-O binary inside the IPA, adding a load command. Then, the dylib is placed inside the .app bundle (e.g., AppName.app/my.dylib ). When you re-sign and repackage the IPA, the dylib is bundled with the app.

insert_dylib --strip-codesig @executable_path/inject.dylib SampleApp SampleApp_patched mv SampleApp_patched SampleApp cp /path/to/your/inject.dylib . Now the .app directory contains both SampleApp (the patched binary) and inject.dylib . Step 5: Re-Sign the Entire Bundle If you skip this step, iOS will refuse to launch the app due to invalid signature.