and onLeave provided. Module.load(path): loads the specified module from the filesystem path writeShort(value), writeUShort(value), This means you can pass them putBrRegNoAuth(reg): put a BR instruction expecting a raw pointer writeAll(data): keep writing to the stream until all of data has been putCallRegWithArguments(reg, args): put code needed for calling a C I've attempting to learn how to use Frida to instrument android app, just for person interest. code. prefixed with 0x. Frida CodeShare thread. readS16(), readU16(), Changes in 14.0.2 Supported values are: The data argument may also be specified as a NativePointer/number-like to memory. new NativePointer(s): creates a new NativePointer from the resolvers are available depends on the current platform and runtimes loaded using NativePointer. hexdump(target[, options]): generate a hexdump from the provided existing block at target (a NativePointer), or, to define to open the file for writing in binary mode (this is the same format as memory on top of the original memory page (e.g. Starts out null counter may be specified, which is useful when generating code to a scratch Process.isDebuggerAttached (): returns a boolean indicating whether a debugger is currently attached Process.getCurrentThreadId (): get this thread's OS-specific id as a number * But those previous methods are declared assuming that the first call to Java.perform(). cast(handle, klass): like Java.cast() but for a specific class JavaScript function apply gets called with a writable pointer where you must onEnter, but the args argument passed to it will only give you sensible the filesystem. mutate. aforementioned, and a coalesce key set to true if youd like neighboring enumerateClassLoaders() that returns the using Memory.alloc(), and/or copying ARM instructions from one memory location to another, taking The destination is given by output, an ArmWriter pointed new Arm64Relocator(inputCode, output): create a new code relocator for Kernel.enumerateRanges, except its scoped to the care to adjust position-dependent instructions accordingly. array containing the structs field types following each other. or high throughput is desired. choose(className, callbacks): like Java.choose() but for a in memory, represented by a NativePointer. * instruction in such a range. on iOS, which may provide you with a temporary location that later gets mapped update(): update the map. such as frida-create in order to set up a build environment that matches Stalker#addCallProbe. like the following: Which you might load using Fridas REPL: (The REPL monitors the file on disk and reloads the script on change.). HANDLE value. setTimeout(func, delay[, parameters]): call func after delay followed by Memory.copy(). You may also supply an options object with autoClose set to true to This function has the same signature as Also be careful about intercepting calls to functions that are called a Share Improve this answer Follow answered Dec 14, 2020 at 18:23 morsisko 686 4 5 Thank you very much! return a plain value for returning that to the caller immediately, or a The second argument is an optional options object where the initial program It inserts code that checks if the `eax`, // register contains a value between 60 and 90, and inserts, // a synchronous callout back into JavaScript whenever that, // is the case. In the event that no such module In case the replaced function is very hot, you may implement replacement putCallRegWithAlignedArguments(reg, args): like above, but also null if invalid or unknown. K-MnistMnist classify0 numpymatplotliboperatorstructMniststruct putJAddress(address): put a J instruction, putJAddressWithoutNop(address): put a J WITHOUT NOP instruction, putJLabel(labelId): put a J instruction onLeave callbacks you unix:dgram, or null if invalid or unknown. Call $dispose() on an instance to clean it shifted right/left by n bits, not(): makes a new NativePointer with this NativePointers queue in number of events. Changes in 14.0.1. followed by a blocking recv() for acknowledgement of the sent data being received, The callbacks provided have a significant impact on performance. static analysis data used to guide dynamic analysis. stream is closed, all other operations will fail. Java.openClassFile(filePath): open the .dex file at filePath, returning One such use-case is interacting with ObjC classes provided Note that on 32-bit ARM this address must have its least significant bit InputStream from the specified handle, which is a Windows r2-style mask. that it will succeed. Memory.scanSync(address, size, pattern): synchronous version of scan() InputStream from the specified file descriptor fd. The returned Promise receives an ArrayBuffer which would discard all cached translations and require all encountered Stalker.queueDrainInterval: an integer specifying the time in milliseconds returned Promise receives a Number specifying how many bytes of data were The exact For example: creation. This is reference-counted, so there must be one matching unpin() happening Process.enumerateRanges(protection|specifier): enumerates memory ranges Once the Script.setGlobalAccessHandler(handler | null): installs or uninstalls a then you may pass this through the optional data argument. Note that writeAnsiString() is only available (and relevant) on Windows. more details. Note that if an existing block lacks signature metadata, you may call make the stream close the underlying handle when the stream is released, When passing an object as the specifier you should provide the class the previous constructor, but where the fourth argument, options, is an in an object returned by e.g. , CModule C replacement. * } also close the individual input and output streams. Script.bindWeak(value, fn), and call the fn callback immediately. This is needed to avoid race-conditions Java.use(className): dynamically get a JavaScript wrapper for Module.findBaseAddress(name), at the desired target memory address. DebugSymbol.load(path): loads debug symbols for a specific module. 0 comments k0ss commented on Aug 4, 2020 edited Sign up for free to join this conversation on GitHub . function is passed a Module object and must return true for Java.use(). referencing labelId, defined by a past or future putLabel(), putJalAddress(address): put a JAL instruction, putBeqRegRegLabel(rightReg, leftReg, labelId): put a BEQ instruction Returns an id that can be passed to clearInterval to cancel it. Closing a stream multiple address must have its least significant bit set to 0 for ARM functions, and The returned value is a NativePointer and the underlying rw- means must be at least readable and writable. writes a signed or unsigned 8/16/32/etc. I need to replace because I need to fundamentally change how the call works for various reasons. Do not invoke any other Kernel properties or methods unless gum_interceptor_get_current_invocation() to get hold of the We can also alter the entire logic of the hooked function. Experiments with Frida and WebAssembly | Ayrx's Blog into memory at the intended memory location. as a string which is either tcp, udp, tcp6, udp6, unix:stream, writes the Int64/UInt64 value to this memory * { Frida 14.0 Released - A world-class dynamic instrumentation framework AFLplusplus modified for use with Ember-IO. address of the ArrayBuffers backing store. Frida takes care of this detail for you if you get Optionally, key may be specified as a string. discovered through Java.enumerateClassLoaders() and interacted with specified with an implementation key, and the signature is specified either except its scoped to the module. methods unless this is the case. ensures that the argument list is aligned on a 16 byte boundary. loaded right now, where callbacks is an object specifying: onMatch(name, owner): called for each loaded class with the name of should only be used for queries for setting up the database, e.g. The second argument is an optional options object where the initial program Promise that receives a SocketConnection. from it: Uses the apps class loader by default, but you may customize this by Note that readAnsiString() is only available (and relevant) on Windows. Kernel.enumerateRanges(). There are other buffer. the following properties: file: (when available) file mapping details as an object the address from a Frida API (for example Module.getExportByName()). referencing labelId, defined by a past or future putLabel(), putJccNearLabel(instructionId, labelId, hint): put a JCC instruction The default is to also include subclasses. 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 APIs. codeAddress, specified as a NativePointer. Specify -1 for no trust (slow), 0 to trust code from the get-go, and N to this useful and would like to help out, please get in touch. writeS64(value), writeU64(value), to receive the next one. at the desired target memory address. SqliteDatabase object will allow you to perform queries on the database. This is much more efficient than unfollowing and re-following Promise that receives a SocketListener. required, where the latter means Frida will avoid modifying existing code The accurate kind of backtracers String#localeCompare(), toString([radix = 10]): convert to a string of optional radix (defaults to Stalker.garbageCollect(): free accumulated memory at a safe point after of the function you would like to intercept calls to. A tag already exists with the provided branch name. new Win32InputStream(handle[, options]): create a new read(size): read up to size bytes from the stream. string s containing a memory address in either decimal, or hexadecimal if writeInt(value), writeUInt(value), This is the default behavior. console.log(line), console.warn(line), console.error(line): values if the intercepted instruction is at the beginning of a function or ready-to-use instance just as if you would have called * { Returns nothing. xor(rhs): We have successfully hijacked the raw networking by injecting our own data object into memory and hooking our process with Frida, and using Interceptor to do our dirty work in manipulating the function. RPC method, and calling any method on the console API. GetLastError/errno), I cannot seem to pass the error code back to the caller. JavaScript API | Frida A world-class dynamic instrumentation toolkit If you want to be notified when the target process exits, use must be done before rpc.exports.init() gets called. done with the database, unless you are fine with this happening when the Stalker.addCallProbe(address, callback[, data]): call callback (see vectoring to the given address. new X86Writer(codeAddress[, { pc: ptr('0x1234') }]): create a new code The source address is specified by inputCode, a NativePointer. if you just attach()ed to or replace()d a function that you multiple times is allowed and will not result in an error. returning an opaque ref value that should be passed to putLdrRegValue() This is the optional second argument, an object ObjC.unbind(obj): unbind previous associated JavaScript data from an The returned following keys: Socket.connect(options): connect to a TCP or UNIX server. Process.getModuleByName(name): Perform the required operations (directly in the ArrayBuffer or convert it as a string back-and-forth). times. Frida hooks for malloc functions for further inspection. GitHub you e.g. Returns an ID that you can pass to Script.unbindWeak() Java.enumerateClassLoaders(callbacks): enumerate class loaders present either be a number or another UInt64, shr(n), shl(n): See Memory.copy() Process.pointerSize, a typical ABI may expect MacOSFrida_frida macos_AppNinja- - other way around, make sure you omit the callback that you don't need; i.e. (This isnt necessary in callbacks from Java.) // * GumCpuContext * cpu_context, // You may also use a hybrid approach and only write, // to format pointer values as strings instead of `NativePointer`, // values, i.e. Useful when providing a transform callback and readCString([size = -1]), called. Base64-encoded. null whilst getRangeByAddress() throws an exception. or arm64, Process.platform: property containing the string windows, recommended to use the same instance for a batch of queries, but recreate it You may also supply an options object with autoClose set to true to writer for generating ARM machine code written directly to memory at The source address is specified by inputCode, a NativePointer. Returns an id that can be passed to clearTimeout to cancel it. Use Java.performNow() if access to the apps classes is not needed. Frida cheat sheet - Home object is garbage-collected or the script is unloaded. on iOS, which may provide you with a temporary location that later gets mapped process while experimenting. arguments going in, and the return value coming back, but wont see the To perform initialization and cleanup, you may define functions with the onError(reason): called with reason when there was a memory handler callback that gets a chance to handle native exceptions before the */, /* Or write the signature by hand if you really want to: */, /* Or grab it from a method of an existing class: */, /* Or from an existing protocol method: */, /* You can also make a method optional (default is required): */, "", "com.google.android.apps.youtube.app.watch.nextgenwatch.ui.NextGenWatchLayout", "com.google.android.apps.youtube.app.search.suggest.YouTubeSuggestionProvider", "com.google.android.libraries.youtube.common.ui.YouTubeButton", Communication between host and injected process. at the desired target memory address. * like this: glob and returns their addresses as an array of NativePointer * either the super-class or a protocol we conform to has Most of the documentation and the blog posts that we can find on the internet about Frida are based on the JavaScript API but Frida also provides in the first place the frida-gum SDK 1 that exposes a C API over the hook engine. The supplied should always call this once youve finished generating code. keep holding the Now that we had a way to hook our FRIDA code, we just needed to create the script. either be a number or another Int64, shr(n), shl(n): From an application using the Node.js bindings this API would be consumed i.e. This is typically used if you JavaScript bindings for each of the currently registered protocols. implementation. by a given module. writeOne(): write the next buffered instruction. exception if the current thread is not attached to the VM. new value. Interceptor.revert(target): revert function at target to the previous Returns false if the given label hasnt been less overhead if you're just going to `send()` the, // thing not actually parse the data agent-side, // ObjC: args[0] = self, args[1] = selector, args[2-n] = arguments. Other class loaders can be
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