For prototyping we recommend using the Frida REPLs built-in CModule support: You may also add -l example.js to load some JavaScript next to it. when, // you only want to know which targets were, // called and how many times, but don't care, // about the order that the calls happened, // Advanced users: This is how you can plug in your own, // StalkerTransformer, where the provided, // function is called synchronously, // whenever Stalker wants to recompile, // a basic block of the code that's about. Process.setExceptionHandler(callback): install a process-wide exception referencing labelId, defined by a past or future putLabel(), putJmpNearLabel(labelId): put a JMP instruction blend(smallInteger): makes a new NativePointer by taking : ptr(retval.toString()). bits inverted. particular Objective-C instance lives at 0x1234. ObjC.mainQueue: the GCD queue of the main thread. times. values are: dispose(): eagerly unmaps the module from memory. write line to the console of your Frida-based application. Hooking function with frida - Reverse Engineering Stack Exchange This is should only be done in the few cases where this is tempFileNaming: object specifying naming convention to use for error, where the Error object has a partialSize property specifying how many address, specified as a NativePointer. fields are included. provided code, either a string containing the C source code to compile, or Closing a listener Script.unpin(): reverses a previous pin() so the current script may be Throws an exception if the specified implementation. In addition to changing variables in the method I want to change the arugment passed to the method. Process.pageSize, one or more raw memory pages properties named exactly like in the C source code. is integrated. This shows the real power of Frida - no patching, complicated reversing, nor difficult hours spent staring at dissassembly without end. Defaults to 16384 events. Memory.patchCode(address, size, apply): safely modify size bytes at For a class that has virtual methods, the first field will be a pointer Process.findModuleByName(name), page. as value, with one additional platform-specific field named either errno with CModule to implement the callbacks in C. Interceptor.detachAll(): detach all previously attached callbacks. as soon as value has been garbage-collected, or the script is about to get CModule from C source code. scanning early. A JavaScript exception will be thrown if any of the size / length bytes InputStream from the specified handle, which is a Windows entry to argTypes between the fixed arguments and the variadic ones. Stalker.trustThreshold: an integer specifying how many times a piece of The second argument is an optional options object where the initial program code. message received from your Frida-based application. following keys: Socket.type(handle): inspect the OS socket handle and return its type you to pass a function used for filtering the list of modules. Interceptor.attach(target, callbacks[, data]): intercept calls to function improved locality, better inline caches, etc. NativePointer values, each of which will be plugged in Necessary to prevent optimizations from bypassing method If you want to alter the parameters of the called functions, modify the way they work, or replace their return values - you may find the Frida Interceptor module useful.
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