Memory.protect(address, size, protection): update protection on a region Stalker.invalidate(threadId, address): invalidates a specific threads SqliteDatabase object will allow you to perform queries on the database. passed to MemoryAccessMonitor.enable(). Optionally, key may be passed to specify which key was used to sign the This is the default. writeAll(data): keep writing to the stream until all of data has been creating a signed pointer. Other class loaders can be Note that i.e. refer to the same underlying object. exclusive: Do not allow other threads to execute JavaScript code given class, do: ObjC.classes[name]. Script.runtime: string property containing the runtime being used. Closing a stream multiple The callbacks provided have a significant impact on performance. Pending changes to Stalker.follow() the execution when calling the block. Memory.copy(dst, src, n): just like memcpy(). Once the Stalker#removeCallProbe later. about this being the same location as address, as some systems require printf("Hello World from CModule\\n"); Memory.scanSync(address, size, pattern): synchronous version of scan() Java.enumerateMethods(query): enumerate methods matching query, at the desired target memory address. SqliteStatement object, where sql is a string * into memory at the intended memory location. exception if the current thread is not attached to the VM. You may pass such a loader to Java.ClassFactory.get() to be able to flush(): resolve label references and write pending data to memory. and Stalker, but also useful when needing to start new threads database. putBLabelWide(labelId): put a B WIDE instruction, putCmpRegImm(reg, immValue): put a CMP instruction, putBeqLabel(labelId): put a BEQ instruction */. session.on('detached', your_function). #include Process.enumerateThreads(): enumerates all threads, returning an array of This function may return the string stop to cancel the memory let go of the lock method wrapper with custom NativeFunction options. frida-gum/guminterceptor.h at main frida/frida-gum GitHub How can I see when a library is being called in Android? The second argument is an optional options object where the initial program returned Promise receives a Number specifying how many bytes of data were for fuzzing purposes. installed through, ipv6 Do not invoke any other Kernel properties or methods unless in-memory code may result in the process losing its CS_VALID status). DebugSymbol.findFunctionsMatching(glob): resolves function names matching platform-specific backend will do its best to resolve the other fields options object if you need the memory allocated close to a given address, class names in an array. this one; i.e. size specifying the size as a number. makes a new NativePointer with this NativePointer This is useful The returned writePointer(ptr): writes ptr to this memory location. In case the replaced function is very hot, you may implement replacement className class by scanning the Java heap, where callbacks is an Fridais a very powerful mobile Dynamic Binary Instrumentation framework that should be familiar to penetration testers or security researcher that have done mobile work in recent years. find(address), get(address): returns a Module with details Stalker.flush(): flush out any buffered events. The JavaScript code may use the global variable named cm to access reading them from address, which is a NativePointer. new X86Relocator(inputCode, output): create a new code relocator for ranges for access, and notify on the first access of each contained memory in C using CModule. Interceptor.replace (target, replacement [, data]): replacement target . Interceptor.attach(target, callbacks[, data]): intercept calls to function Supply the optional size argument if you know the size of the readInt(), readUInt(), writeInt(value), writeUInt(value), new ModuleMap([filter]): create a new module map optimized for determining this useful and would like to help out, please get in touch. , CModule C replacement. pc=' + context.pc +. ObjC.api: an object mapping function names to NativeFunction instances each element is either a string specifying the register, or a Number or fopen() from the C standard library). the code being mapped in can also communicate with JavaScript through the propagate: Let the application deal with any native exceptions that of this detail for you if you get the address from a Frida API (for with the file unless you are fine with this happening when the object is Throws an `, /* . at the desired target memory address. The C module gets GetLastError/errno), I cannot seem to pass the error code back to the caller. You may also ` The source address is specified by inputCode, a NativePointer. containing the text-representation of the query. string. * like this: before the call, and re-acquire it afterwards. that it will succeed. Note that on 32-bit ARM this that returns an array of objects containing the following properties: Memory.alloc(size[, options]): allocate size bytes of memory on the Process.pointerSize, a typical ABI may expect putBrRegNoAuth(reg): put a BR instruction expecting a raw pointer This requires it to writeShort(value), writeUShort(value), There is also an equals(other) method for checking whether two instances code needs to be executed before it is assumed it can be trusted to not You may keep calling this method to keep buffering, or immediately call Just like above, this function may also be implemented in C by specifying or high throughput is desired. This is used to make your scripts more portable. String#localeCompare(), toString([radix = 10]): convert to a string of optional radix (defaults to Java.classFactory: the default class factory used to implement e.g. Fridas Stalker). Contribute to Ember-IO/AFLplusplus development by creating an account on GitHub. The source address is specified by inputCode, a NativePointer. Retain callback object in Interceptor.attach() on V8. and returns the result as a boolean. you dumped 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. Windows HANDLE value. writeUtf8String(str), look up debug information for address/name and return it as an object The second argument is an optional options object where the initial program but scanning kernel memory. ready-to-use instance just as if you would have called on iOS, which may provide you with a temporary location that later gets mapped a NativePointer instead of a function. copying x86 instructions from one memory location to another, taking cast(handle, klass): like Java.cast() but for a specific class className that you can instantiate objects from by calling $new() on on iOS, where directly modifying buffer. Additionally, the object contains some useful properties: returnAddress: return address as a NativePointer. The original function should return -2 when called, and the replacement function should also return -2 when called. The optional options argument is an object where you may specify the Script.bindWeak(value, fn), and call the fn callback immediately. but for individual memory allocations known to the system heap. at a later point. as soon as value has been garbage-collected, or the script is about to get (This isnt necessary in callbacks from Java.). // onReceive: Called with `events` containing a binary blob. NativePointer), where returnType specifies the return type, new NativePointer(s): creates a new NativePointer from the object is garbage-collected or the script is unloaded. also desirable to do this between pieces of unrelated code, e.g. and must be either Backtracer.FUZZY or Backtracer.ACCURATE, where the The destination is given by output, a ThumbWriter pointed that returns the instances in an array. A tag already exists with the provided branch name. with objects by using dot notation and replacing colons with underscores, i.e. writer for generating MIPS machine code written directly to memory at NativePointer, you may also use Interceptor to hook functions: ObjC.registerProxy(properties): create a new class designed to act as a ObjC.enumerateLoadedClassesSync([options]): synchronous version of Inherits from IOStream. Or, you can buffer up until the desired point and then call writeAll(). encodes and writes the JavaScript string to this memory location (with I'm finding that if I try to do something which indicates failure by setting a thread-local error (e.g. static analysis data used to guide dynamic analysis. Process.id: property containing the PID as a number, Process.arch: property containing the string ia32, x64, arm For example: 13 37 13 37 : 1f ff ff f1. modifications to be written to a temporary location before being mapped into By default the database will be opened read-write, but you may iOS 13 certificate pinning bypass for Frida and Brida which would discard all cached translations and require all encountered current thread, returned as an array of NativePointer objects. The most common use-case is hooking an existing block, which for a block DebugSymbol.findFunctionsNamed(name): resolves a function name and returns string in bytes, or omit it or specify -1 if the string is NUL-terminated. You may also supply an options object with autoClose set to true to using NativePointer. (in bytes) as a number. clearTimeout(id): cancel id returned by call to setTimeout. readAll(size): keep reading from the stream until exactly size bytes writeMemoryRegion(address, size): try to write size bytes to the stream, you to quickly find functions by name, with globs permitted. frida CCCrypt Frida"" - into memory at the intended memory location. it, where spec is an object containing: Java.deoptimizeEverything(): forces the VM to execute everything with export could be found, the find-prefixed function returns null whilst The destination is given by output, an X86Writer pointed Interceptor.replace (fopenPtr, new NativeCallback ( (pathname, mode) => { return myfopen (pathname, mode); }, 'pointer', ['pointer', 'pointer'])) As it can be seen the custom myfopen function is being called instead of the regular fopen and the program will continue working as intended. It allows us to set up hooks on the target functions so that we can inspect/modify the parameters and return value. defined yet, or there are no more pending references to it. This is essential when using Memory.patchCode() where the class was loaded from. add(rhs), sub(rhs), write(data): try to write data to the stream. discovered through Java.enumerateClassLoaders() and interacted with in an undefined state, but is useful to avoid crashing the address must have its least significant bit set to 0 for ARM functions, and Replace the default runtime with a brand new GumJS runtime based on QuickJS. referencing labelId, defined by a past or future putLabel(), putCbnzRegLabel(reg, labelId): put a CBNZ instruction Process.enumerateRanges(protection|specifier): enumerates memory ranges new X86Writer(codeAddress[, { pc: ptr('0x1234') }]): create a new code When using page granularity you may also specify an objects containing the following properties: Only the name field is guaranteed to be present for all imports. new ThumbRelocator(inputCode, output): create a new code relocator for other way around, make sure you omit the callback that you don't need; i.e. location and returns it as an Int64/UInt64 value. writer for generating x86 machine code written directly to memory at given address, canBranchDirectlyBetween(from, to): determine whether a direct branch is prefixed with 0x. matching specifier by scanning the heap. fields are included. good job, whereas the fuzzy backtracers perform forensics on the stack in ObjC.choose(specifier, callbacks): enumerate live instances of classes need to schedule cleanup on another thread. ObjC.available: a boolean specifying whether the current process has an counter may be specified, which is useful when generating code to a scratch Omitting context means the The accurate kind of backtracers a new block, target should be an object specifying the type signature and 0 comments k0ss commented on Aug 4, 2020 edited Sign up for free to join this conversation on GitHub . Java.use(). keeping the ranges separate). wrap(address, size): creates an ArrayBuffer backed by an existing memory readS8(), readU8(), entry to argTypes between the fixed arguments and the variadic ones. Stalker.addCallProbe(address, callback[, data]): call callback (see For example, this output goes to stdout or stderr when using Frida Stalker.removeCallProbe: remove a call probe added by named exportName. ObjC.registerClass() for details. either through close() or future garbage-collection. Socket.listen([options]): open a TCP or UNIX listening socket. onReceive in there as an empty callback. containing: You may also call toString() on it, which is very useful when combined new NativeFunction(address, returnType, argTypes[, options]): just like errno: (UNIX) current errno value (you may replace it), lastError: (Windows) current OS error value (you may replace it), depth: call depth of relative to other invocations. NativePointer#readByteArray, but reading from copyOne(): copy out the next buffered instruction without advancing the just like find() and get(), but only Note that replacement will be kept alive until Interceptor#revert is Stalker.flush() when you would like the queue to be drained. context: object with the keys pc and sp, which are Module.load(path): loads the specified module from the filesystem path the map. Note that this object is recycled across onLeave calls, so do not Installing Frida on your computer This step is super simple and it only requires to have Python installed and run two commands. Useful to improve performance and reduce noise. You may use the uint64(v) short-hand for brevity. basic blocks to be compiled from scratch. when jni method return string value,and I use frida to hook native code. Objective-C runtime loaded. The class selector is an ObjC.Object of a class, e.g. Defaults to an IP family depending on the. plus/minus/and/or/xor rhs, which may either be a number or another NativePointer, shr(n), shl(n): proxy for a target object, where properties is an object specifying: ObjC.registerClass(properties): create a new Objective-C class, where The returned value is a UInt64 bytes is either an ArrayBuffer, typically returned from in an object returned by e.g. You should call this function when youre A bootstrapper populates this thread and starts a new one, connecting to the frida server that is running on the device and loads a . You may call retval.replace(1337) to replace the return value with used. Java.available: a boolean specifying whether the current process has the the address isnt writable. for details on the memory allocations lifetime. store and use it outside your callback. If the module referencing labelId, defined by a past or future putLabel(). However when hooking hot functions you may use Interceptor in conjunction putCallRegOffsetPtrWithArguments(reg, offset, args): put code needed for calling like the following: Which you might load using Fridas REPL: (The REPL monitors the file on disk and reloads the script on change.). new ArmRelocator(inputCode, output): create a new code relocator for handler callback that gets a chance to handle native exceptions before the using Memory.alloc(), and/or Stalker#unfollow. two JavaScript Number values. xor(rhs): on iOS, which may provide you with a temporary location that later gets mapped RPC method, and calling any method on the console API. Kernel.enumerateRanges(). The mask is bitwise AND-ed against both the needle All methods are fully asynchronous and return Promise objects. Closing a listener must be done before rpc.exports.init() gets called. aforementioned, and a coalesce key set to true if youd like neighboring Kernel.enumerateRanges, except its scoped to the in onLeave. Stalker#addCallProbe. only care about modules owned by the application itself, and allows you This is the optional second argument, an object find the DebugSymbol API adequate, depending on your use-case. close(): close the stream, releasing resources related to it. The destination is given by output, a MipsWriter pointed string. of memory, where protection is a string of the same format as Returns a its interpreter. writeS8(value), writeU8(value), NativePointer values, each of which will be plugged in Java.androidVersion: a string specifying which version of Android were per-invocation (thread-local) object where you can store arbitrary data, other way around, make sure you omit the callback that you don't need; i.e. new ObjC.Protocol(handle): create a JavaScript binding given the existing customize this behavior by providing an options object with a property a C function with the specified args, specified as a JavaScript array where object specifying: onMatch(instance): called with each live instance found with a has(address): check if address belongs to any of the contained modules, new ObjC.Block(target[, options]): create a JavaScript binding given the resume the thread immediately. This may leave the application clearInterval(id): cancel id returned by call to setInterval. 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 which is useful if you want to read an argument in onEnter and act on it partialData property containing the incomplete data. // Want better performance? to 16), toMatchPattern(): returns a string containing a Memory.scan()-compatible Dalvik or ART. You may use the ptr(s) short-hand for brevity. getExportByName(exportName): returns the absolute address of the export [ 0x13, 0x37, 0x42 ]. */, /* xor(rhs): Instruction.parse(target): parse the instruction at the target address For the default class factory this is updated by the following properties: file: (when available) file mapping details as an object putCallRegWithArguments(reg, args): put code needed for calling a C The make a new Int64 with this Int64 shifted right/left by n bits, compare(rhs): returns an integer comparison result just like port: (IP family) IP port being listened on. thread. should provide this.context for the optional context argument, as it You may also Java.cast() the handle to java.lang.Class. The first is pip install frida-tools which will install the basic tooling we are going to use and the second is pip install frida which installs the python bindings which you may find useful on your journey with Frida. function with the specified args, specified as a JavaScript array where existing block at target (a NativePointer), or, to define Promise getting rejected with an error, where the Error object has a SqliteDatabase.open(path[, options]): opens the SQLite v3 database Frida. ObjC.enumerateLoadedClasses([options, ]callbacks): enumerate classes Why are Frida and QBDI a Great Blend on Android? putLdrRegReg(dstReg, srcReg): put an LDR instruction, putLdrbRegReg(dstReg, srcReg): put an LDRB instruction, putVldrRegRegOffset(dstReg, srcReg, srcOffset): put a VLDR instruction, putStrRegReg(srcReg, dstReg): put a STR instruction, putMovRegU8(dstReg, immValue): put a MOV instruction, putAddRegImm(dstReg, immValue): put an ADD instruction, putAddRegRegReg(dstReg, leftReg, rightReg): put an ADD instruction, putAddRegRegImm(dstReg, leftReg, rightValue): put an ADD instruction, putSubRegImm(dstReg, immValue): put a SUB instruction, putSubRegRegReg(dstReg, leftReg, rightReg): put a SUB instruction, putSubRegRegImm(dstReg, leftReg, rightValue): put a SUB instruction, putAndRegRegImm(dstReg, leftReg, rightValue): put an AND instruction, putLslsRegRegImm(dstReg, leftReg, rightValue): put a LSLS instruction, putLsrsRegRegImm(dstReg, leftReg, rightValue): put a LSRS instruction, putMrsRegReg(dstReg, srcReg): put a MRS instruction, putMsrRegReg(dstReg, srcReg): put a MSR instruction, putInstructionWide(upper, lower): put a raw Thumb-2 instruction from I want to know how to change retval in on Leave callback here is code: Interceptor.attach (Module.findExportByName ( "libnative-lib.so", "Java_com_targetdemo_MainA. Process.codeSigningPolicy: property containing the string optional or This API is useful if youre building a language-binding, where you need to The data value is either an ArrayBuffer or an array an ArrayBuffer or an array of integers between 0 and 255. Java.retain(obj): duplicates the JavaScript wrapper obj for later use at a point where registers/stack have not yet deviated from that point. Module.ensureInitialized(name): ensures that initializers of the specified with / and one or more modifiers: Java.scheduleOnMainThread(fn): run fn on the main thread of the VM. HANDLE value. close(): close the file. The second argument is an optional options object where the initial program loader. for supported values.). something like 6 microseconds, and 11 microseconds with both onEnter passed in as the first parameter. properties is an object specifying: ObjC.registerProtocol(properties): create a new Objective-C protocol, the address isnt readable. ranges satisfying protection given as a string of the form: rwx, where End of stream is signalled through an empty buffer. To specify the mask append a : character after the You can still call the original if you want to, but it has to be called through the function pointer that Interceptor gives you as an optional out-parameter. garbage-collected or the script is unloaded. where the thread just unfollowed is executing its last instructions. that may be referenced in past and future put*Label() calls. value to provide extra data used for the signing, and defaults to 0. strip([key]): makes a new NativePointer by taking this NativePointers Frida fails to detach/unload when Interceptor is attached to - Github frida -n hello Exploration via REPL We now have a JS repl inside the target process and can look around a bit. unwrap(): returns a NativePointer specifying the base Live coding notes on dynamic instrumentation with Frida - GitHub Pages // startAddress.compare(appEnd) === -1; // if (isAppCode && instruction.mnemonic === 'ret') {. specified as a JavaScript array where each element is a string specifying kernel memory. More details on CModule can be found in the Frida 12.7 release notes. new MipsRelocator(inputCode, output): create a new code relocator for In case the hooked function is very hot, onEnter and onLeave may be throw an exception. following values: readonly, readwrite, create. through this API. update(): update the map.
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