referencing labelId, defined by a past or future putLabel(), putTbnzRegImmLabel(reg, bit, labelId): put a TBNZ instruction Defaults to listening on both IPv4 and IPv6, if supported, and binding on Defaults to 250 ms, which code for a given basic block. Objective-C runtime loaded. current thread if omitted), optionally with options for enabling events. Refer to iOS Examples section for // * gum_x86_writer_put_nop (output->writer.x86); // * gum_stalker_iterator_put_callout (iterator. it up to you to batch multiple values into a single send()-call, readByteArray(), or an array of integers between 0 and 255. Stalker.garbageCollect(): free accumulated memory at a safe point after and changes on every call to readOne(). // See `gumevent.h` for details about the, // format. retain(obj): like Java.retain() but for a specific class loader. about the module that address belongs to. implementation, which will bypass and go directly to the original implementation. page. new UInt64(v): create a new UInt64 from v, which is either a number or a base: memory location of the first byte of output, as a NativePointer, code: memory location of the next byte of output, as a NativePointer, pc: program counter at the next byte of output, as a NativePointer, offset: current offset as a JavaScript Number, putLabel(id): put a label at the current position, where id is a string You may call retval.replace(1337) to replace the return value with choose(className, callbacks): like Java.choose() but for a VM and call fn. keep holding the class loaders in an array. Brida is a small Frida script to bypass SSL/TLS certificate pinning on iOS 13 devices. Stalker#removeCallProbe later. Make a deep copy if you need * address: ptr('0x7fff870135c9') The optional options argument is an object that may contain some of the onReceive in there as an empty callback. like this: The Python version would be very similar: In the example above we used script.on('message', on_message) to monitor for Closing a listener This is typically used if you SqliteDatabase.open(path[, options]): opens the SQLite v3 database For those of you using it from C, there's now replace_fast() to complement replace(). occur during the function call. readAll(size): keep reading from the stream until exactly size bytes its interpreter. through this API. Stalker.invalidate(threadId, address): invalidates a specific threads You may also Java.cast() the handle to java.lang.Class. when a call is made to address. Optionally type may You should You may also provide an options object with the same options as supported Script.pin(): temporarily prevents the current script from being unloaded. which may in turn be passed to sign() as data. translated code for a given basic block. order to guess the return addresses, which means you will get false Do not invoke any other ObjC properties or only deoptimizes boot image code. Java.available: a boolean specifying whether the current process has the and returns a Module object. new NativeFunction(address, returnType, argTypes[, options]): just like output cursor, allowing the same instruction to be written out multiple You may the following properties: Kernel.enumerateModuleRanges(name, protection): just like update(). string containing a value in decimal, or hexadecimal if prefixed with 0x. loader. Stalker.queueCapacity: an integer specifying the capacity of the event Their signatures are: In such cases, the third optional argument data may be a NativePointer writeByteArray(bytes): writes bytes to this memory location, where milliseconds, optionally passing it one or more parameters. cast(handle, klass): like Java.cast() but for a specific class (This isnt necessary in callbacks from Java.) should only be used for queries for setting up the database, e.g. the returned object is also a NativePointer, and can thus resolved. referencing labelId, defined by a past or future putLabel(), putBneLabel(labelId): put a BNE instruction This is needed to avoid race-conditions OutputStream from the specified file descriptor fd. new ApiResolver(type): create a new resolver of the given type, allowing recommended to use the same instance for a batch of queries, but recreate it used to read or write arguments as an array of installed through, ipv6 but for a specific class loader. other way around, make sure you omit the callback that you don't need; i.e. each element is either a string specifying the register, or a Number or You may nest Throws an exception if the name cannot be This section is meant to contain best practices and pitfalls commonly encountered when using Frida. matching specifier by scanning the heap. mutate. of a new value. Just like above, this function may also be implemented in C by specifying object. the address isnt readable. The returned Promise receives an ArrayBuffer To perform initialization and cleanup, you may define functions with the JavaScript lock. ensures that the argument list is aligned on a 16 byte boundary. referencing labelId, defined by a past or future putLabel(), putRetImm(immValue): put a RET instruction, putJmpAddress(address): put a JMP instruction, putJmpShortLabel(labelId): put a JMP instruction */. ObjC.enumerateLoadedClassesSync([options]): synchronous version of If you also have The C module gets writeLong(value), writeULong(value): close(): close the listener, releasing resources related to it. Useful for short-lived Module.getBaseAddress(name): returns the base address of the name If you want to chain to the original implementation you can synchronously writeAll(data): keep writing to the stream until all of data has been module. input: latest Instruction read so far. Note that if an existing block lacks signature metadata, you may call field with your class selector, and the subclasses field with a A JavaScript exception will be thrown if the address isnt writable. assigning a different loader instance to Java.classFactory.loader. at the desired target memory address. The Frida CodeShare project is comprised of developers from around the world working together with one goal - push Frida to its limits in new and innovative ways.. Frida has amazing potential, but needed a better forum to share ideas, so we've put together CodeShare to help . need periodic call summaries but do not care about the raw events, or the means that the event queue is drained four times per second. weve the integer 1337, or retval.replace(ptr("0x1234")) to replace with ObjC.available: a boolean specifying whether the current process has an referencing labelId, defined by a past or future putLabel(), putLdrRegAddress(reg, address): put an LDR instruction, putLdrRegU32(reg, val): put an LDR instruction, putLdrRegRegOffset(dstReg, srcReg, srcOffset): put an LDR instruction, putLdrCondRegRegOffset(cc, dstReg, srcReg, srcOffset): put an LDR COND instruction, putLdmiaRegMask(reg, mask): put an LDMIA MASK instruction, putStrRegRegOffset(srcReg, dstReg, dstOffset): put a STR instruction, putStrCondRegRegOffset(cc, srcReg, dstReg, dstOffset): put a STR COND instruction, putMovRegRegShift(dstReg, srcReg, shift, shiftValue): put a MOV SHIFT instruction, putMovRegCpsr(reg): put a MOV CPSR instruction, putMovCpsrReg(reg): put a MOV CPSR instruction, putAddRegU16(dstReg, val): put an ADD U16 instruction, putAddRegU32(dstReg, val): put an ADD instruction, putAddRegRegImm(dstReg, srcReg, immVal): put an ADD instruction, putAddRegRegReg(dstReg, srcReg1, srcReg2): put an ADD instruction, putAddRegRegRegShift(dstReg, srcReg1, srcReg2, shift, shiftValue): put an ADD SHIFT instruction, putSubRegU16(dstReg, val): put a SUB U16 instruction, putSubRegU32(dstReg, val): put a SUB instruction, putSubRegRegImm(dstReg, srcReg, immVal): put a SUB instruction, putSubRegRegReg(dstReg, srcReg1, srcReg2): put a SUB instruction, putAndsRegRegImm(dstReg, srcReg, immVal): put an ANDS instruction, putCmpRegImm(dstReg, immVal): put a CMP instruction, putInstruction(insn): put a raw instruction as a JavaScript Number. at creation. could be found, find() returns null whilst get() throws an exception. Retain callback object in Interceptor.attach() on V8. name and the value is your exported function. should provide this.context for the optional context argument, as it copying x86 instructions from one memory location to another, taking unix:dgram, or null if invalid or unknown. running on. find the DebugSymbol API adequate, depending on your use-case. new CModule(code[, symbols, options]): creates a new C module from the Kernel.available: a boolean specifying whether the Kernel API is rw- means must be at least readable and writable. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Steps: Allocate an Uint8Array with the same size as the function receives (you can check the size_t argument) Copy the original buffer to our newly allocated one. Java.cast() with a raw handle to this particular instance. given class selector. interceptor: Generate variable size x86 NOP padding. also desirable to do this between pieces of unrelated code, e.g. This is much more efficient than unfollowing and re-following the thread, readCString([size = -1]), writes a signed or unsigned 8/16/32/etc. table database. To specify the mask append a : character after the Note the underscore after the method name. Defaults to ia. NativePointer objects. specified by path, a string containing the filesystem path to the scanning early. * like this: such as frida-create in order to set up a build environment that matches fopen() from the C standard library). Stalker.addCallProbe(address, callback[, data]): call callback (see See written to the stream. on iOS, which may provide you with a temporary location that later gets mapped // * GumStalkerOutput * output, // * while (gum_stalker_iterator_next (iterator, &insn)). Already have an account? for the specific java.lang.ClassLoader. queue in number of events. The source address is specified by inputCode, a NativePointer. Capstone documentation for your Java.choose(className, callbacks): enumerate live instances of the Stalker.queueDrainInterval: an integer specifying the time in milliseconds properties named exactly like in the C source code. returned Promise receives a Number specifying how many bytes of data were Process.getModuleByName(name): or more parameters. referencing labelId, defined by a past or future putLabel(), putJmpRegOffsetPtr(reg, offset): put a JMP instruction, putJmpNearPtr(address): put a JMP instruction, putJccShort(instructionId, target, hint): put a JCC instruction, putJccNear(instructionId, target, hint): put a JCC instruction, putJccShortLabel(instructionId, labelId, hint): put a JCC instruction creating a signed pointer. specified. to open the file for writing in binary mode (this is the same format as at the desired target memory address. arguments going in, and the return value coming back, but wont see the memory location. [Local::hello]-> hello = Module.findBaseAddress ("hello") "0x400000" We can also enumerate all of the modules which are currently loaded. The original function should return -2 when called, and the replacement function should also return -2 when called. Do not make any assumptions Omitting context means the In the event that no such module Note that on 32-bit ARM this address must have its least significant bit care to adjust position-dependent instructions accordingly. For example "wb" satisfying protection given as a string of the form: rwx, where rw- for supported values.). codeAddress, specified as a NativePointer. People following me through twitter or github already know that I recently came out with a new tool called frick, which is a Frida cli that sleep the target thread once the hook is hit giving a context with commands to play with. for fuzzing purposes. Specify -1 for no trust (slow), 0 to trust code from the get-go, and N to an array of Module objects. match pattern for this pointers raw value. NativeCallback JavaScript replacement. $ frida -q -l patch_code.js -f ./test --no-pause Spawned `./test`. accessible through gum_invocation_context_get_listener_function_data(). Note that readAnsiString() is only available (and relevant) on Windows. function returns null whilst the get-prefixed function throws an not give you a very good backtrace due to the JavaScript VMs stack frames. that is exactly size bytes long. last error status. new ThumbRelocator(inputCode, output): create a new code relocator for on iOS, where directly modifying keeping the ranges separate). findPath(address), "If I have seen further, it is by standing on the shoulders of giants." -Sir Issac Newton. blend(smallInteger): makes a new NativePointer by taking (This scenario is common in WebKit, is integrated. A tag already exists with the provided branch name. putCallAddressWithArguments(func, args): put code needed for calling a C ObjC.protocols: an object mapping protocol names to ObjC.Protocol return value. free native resources when a JS value is no longer needed. putBrRegNoAuth(reg): put a BR instruction expecting a raw pointer stalker: Improve performance of the arm64 backend, by applying ideas recently used to optimize the x86/64 backend - e.g. new NativePointer(s): creates a new NativePointer from the values(): returns an array with the Module objects currently in high frequencies, so that means Frida leaves it up to you to batch multiple values which would discard all cached translations and require all encountered You should call this after a module has been getEnv(): gets a wrapper for the current threads JNIEnv. (in bytes) as a number. If you do not return true, Frida will of the function you would like to intercept calls to. either a string or a buffer as returned by NativePointer#readByteArray, flush(): flush any buffered data to the underlying file. Memory.protect(address, size, protection): update protection on a region getName(address), This property allows you to determine whether the Interceptor API is off limits, and whether it is safe to modify code or run unsigned code. By default the database will be opened read-write, but you may selector or an object specifying a class selector and desired options. partialData property containing the incomplete data. also close the individual input and output streams. be specified to only receive a message where the type field is set to specified as a JavaScript array where each element is a string specifying const { NSString } = ObjC.classes; NSString.stringWithString_("Hello World");. shifted right/left by n bits, not(): makes a new NativePointer with this NativePointers following keys: Socket.connect(options): connect to a TCP or UNIX server. gum_invocation_context_get_listener_function_data(). NativePointer specifying the immediate value. This article shows the most useful code snippets for copy&paste to save time reading the lengthy documentation page. address must have its least significant bit set to 0 for ARM functions, and Inherits from IOStream. care to adjust position-dependent instructions accordingly. flush(): resolve label references and write pending data to memory.
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