frida hook function by address frida hook function by address

This SDK comes with the frida-gum-example.c file that shows how to Asking for help, clarification, or responding to other answers. An example for intercepting libc#open & logging backtrace if specific file was opened. Create the file struct_mod.py as follows: Note that this script demonstrates how the Module.getExportByName() API can 1 minute read. To profile memory consumption, valgrind --tool=massif does the job pretty well out of the box: const Exception = Java.use("java.lang.Exception"); Module.findExportByName (dllName, name) Create a file hook.py How to force Unity Editor/TestRunner to run at full speed when in background? * See onEnter for details. Calling native functions from Android Java - alternative to JNI, Linking cross-platform library to native android application. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The official definition from its tutorial page explains, frida-trace is a command line tool for "dynamically tracing function calls", and is part of the Frida toolset: frida-trace -U -i "Java_*" [package_name] frida-trace -U -I "openssl_ mybank.so" co.uk.myBank. f(1911); The shown name like FUN_002d5044 is generated by Ghidra as the function has no name. // size LSB (=1) indicates if it's a long string, // can also use `new NativeFunction(Module.findExportByName(null, 'mprotect'), 'int', ['pointer', 'uint', 'int'])(parseInt(this.context.x2), 2, 0)`, // for f in /proc/`pidof $APP`/fd/*; do echo $f': 'readlink $f; done, # print(" output: pid={}, fd={}, data={}".format(pid, fd, repr(data))), 'cat /System/Library/PrivateFrameworks/Example.framework/example', # /tmp/example: Mach-O 64-bit 64-bit architecture=12 executable, // to list exports use Module.enumerateExportsSync(m.name), "android.hardware.graphics.mapper@2.0.so", "/system/lib64/android.hardware.graphics.mapper@2.0.so", "android.hardware.graphics.mapper@2.1.so", "/system/lib64/android.hardware.graphics.mapper@2.1.so", "android.hardware.graphics.mapper@3.0.so", "/system/lib64/android.hardware.graphics.mapper@3.0.so", "android.hardware.graphics.mapper@2.0-impl-2.1.so", "/vendor/lib64/hw/android.hardware.graphics.mapper@2.0-impl-2.1.so", "/system/lib64/vndk-sp-29/android.hardware.graphics.mapper@2.0.so", "/system/lib64/vndk-sp-29/android.hardware.graphics.mapper@2.1.so", "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/oat/arm64/base.odex", "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libfrida-gadget.so", "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libmain.so", "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libunity.so", "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libil2cpp.so", "/data/user_de/0/com.google.android.gms/app_chimera/m/00000278/oat/arm64/DynamiteLoader.odex", "/data/app/com.google.android.gms-j7RpxBsNAd3ttAYEdp2ahg==/oat/arm64/base.odex", "/data/app/com.google.android.trichromelibrary_432418133-X7Kc2Mqi-VXkY12N59kGug==/oat/arm64/base.odex", "/data/app/com.google.android.webview-w6i6OBFZ7T_wK4W4TpDAiQ==/oat/arm64/base.odex", "/data/app/com.google.android.webview-w6i6OBFZ7T_wK4W4TpDAiQ==/base.apk!/lib/arm64-v8a/libmonochrome.so", "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libnativeNoodleNews.so", "/data/app/com.google.android.gms-j7RpxBsNAd3ttAYEdp2ahg==/base.apk!/lib/arm64-v8a/libconscrypt_gmscore_jni.so", // search "215" @ https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html, // intercepting FindClass to populate Map, // RegisterNative(jClass*, .., JNINativeMethod *methods[nMethods], uint nMethods) // https://android.googlesource.com/platform/libnativehelper/+/master/include_jni/jni.h#977, https://android.googlesource.com/platform/libnativehelper/+/master/include_jni/jni.h#129, // https://www.frida.re/docs/javascript-api/#debugsymbol, // methodsPtr.readPointer().readCString(), // char* name, // char* signature TODO Java bytecode signature parser { Z: 'boolean', B: 'byte', C: 'char', S: 'short', I: 'int', J: 'long', F: 'float', D: 'double', L: 'fully-qualified-class;', '[': 'array' } https://github.com/skylot/jadx/blob/master/jadx-core/src/main/java/jadx/core/dex/nodes/parser/SignatureParser.java, "_ZN3art3JNI21RegisterNativeMethodsEP7_JNIEnvP7_jclassPK15JNINativeMethodib", $ c++filt "_ZN3art3JNI21RegisterNativeMethodsEP7_JNIEnvP7_jclassPK15JNINativeMethodib", art::JNI::RegisterNativeMethods(_JNIEnv*, _jclass*, JNINativeMethod const*, int, bool), // output schema: className#methodName(arguments)returnVal@address, // package & class, replacing forward slash with dot for convenience, c/c++ variable type to javascript reader switch implementation, # TODO handle other arguments, [long, longlong..], :return: javascript to read the type of variable, 'Memory.readUtf8String(Memory.readPointer(args[%d])),'. Is it safe to publish research papers in cooperation with Russian academics? // Instead of using `ObjC.choose()` and looking for UIViewController instances on the heap, we have direct access through UIApplication: presentViewController_animated_completion_, '/.com.apple.mobile_container_manager.metadata.plist', '/var/mobile/Containers/Data/Application/', Interceptor.attach(Module.findExportByName('/usr/lib/libobjc.A.dylib', 'objc_msgSend'), {, if (m != 'length' && !m.startsWith('_fastC')), UIGraphicsGetImageFromCurrentImageContext, 'UIGraphicsGetImageFromCurrentImageContext', drawViewHierarchyInRect_afterScreenUpdates_, # will take screenshot, open it with eog & wait for export function name to invoke via input. I've calculated the addresses of functions within the Shared Object I am interested in and I have validated they are the correct addresses by dumping memory at those locations and matching the bytes with the shared object's assembly. engineering not only for reverse-engineering :). * Called synchronously when about to call recvfrom. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. R K. -. 1 minute read. Intercept funcPtr & log who read/write to x2 via removing permissions w/ mprotect. can change the IP address that the client points at completely! Please edit your question and add the relevant parts of the Frida code you use. For the impatient, heres how to do function tracing with Frida: So as you can see, Frida injected itself into Twitter, enumerated the loaded connect() function in libc.so to take our new struct as its argument. much the source code. following example): The following script shows how to hook calls to functions inside a target In a similar way to before, we can create a script stringhook.py, using Frida Frida is particularly useful for dynamic analysis on Android/iOS/Windows applications. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? Unfortunately I have experienced apps where not all classes seem to be loaded at the beginning of the app start. * @param {object} state - Object allowing you to keep Asking for help, clarification, or responding to other answers. However, Frida's interceptor never seems to trigger. to your account. example): This should give you a new message every second on the form: Next up: we want to modify the argument passed to a function inside a target What were the most popular text editors for MS-DOS in the 1980s? Episode about a group who book passage on a space ship controlled by an AI, who turns out to be a human who can't leave his ship? * @this {object} - Object allowing you to store state for Substract that from the shown address in the function name and in Frida at runtime add the base address of the module the function belongs to. CMLoot : Find Interesting Files Stored On (System Center) Configuration Manager RedditC2 : Abusing Reddit API To Host The C2 Traffic. I assume you are using frida's method Module.findExportByName. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? By. Frida JavaScript APIs are well described in the API documentation. Does the order of validations and MAC with clear text matter? st.writeByteArray([0x02, 0x00, 0x13, 0x89, 0x7F, 0x00, 0x00, 0x01, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30]); Well occasionally send you account related emails. */, /** Frida-trace is a front-end for frida that allows automatic generation of hooking code for methods based on pattern. examples that you are meant to edit to taste, and will be automatically reloaded process. """, """ Learn more about the CLI. This way only works for exported functions. may be? then passed into functions as pointer arguments. It only takes a minute to sign up. It allows us to set up hooks on the target functions so that we can inspect/modify the parameters and return value. You signed in with another tab or window. #include Frida is particularly useful for dynamic analysis on Android/iOS/Windows applications. }); So now, add this offset to the base of your module like so: You can ensure it is the correct address by displaying the instruction at the place of the address by: To edit values, edit directly the this.context object. Frida-trace is a front-end for frida that allows automatic generation of hooking code for methods based on pattern. there are some exported and non-exported functions. we target embedded systems like iPhone or Android devices, it starts to reach the limits. Why did DOS-based Windows require HIMEM.SYS to boot? #include Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Making statements based on opinion; back them up with references or personal experience. Hook InputputStream & print buffer as ascii with char limit & exclude list. java.lang.reflect.Method#invoke(Object obj, Object args, boolean bool). Hacking, October 02, 2019 * an array of NativePointer objects. * could auto-generate based on OS API references, manpages, the JavaScript API but Frida also provides in the first place the frida-gum SDK 1 that exposes a C API Thanks for contributing an answer to Reverse Engineering Stack Exchange! does frida support hook a function by module + offset. * as a NativePointer object. onEnter(args) { Why are players required to record the moves in World Championship Classical games? Since (spoiler) I started to implement a parser for the Dyld shared cache and * etc. Now, lets have a look at the generated recvfrom.js: Now, replace the log() line with the following: Save the file (it will be reloaded automatically) and perform some action in so apparently the function address is a miss. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Attach to Chrome app on an Android phone and trace two native functions open and strcmp, Launch SnapChat app on an iPhone and trace CommonCrypto API calls, Trace a all Java methods of class BitmapFactory that contain native in method name, TODO: add references Its very trivial to install a user-trusted certificate on Android. // retval.replace(0); // Use this to manipulate the return value In such a case it helps to manually execute the function you want to test (force it to be loaded) and afterwards attach frida-trace to it. source, If there is a name collision, method & member has the same name, an underscore will be added to member. Why did US v. Assange skip the court of appeal? You usually come across it in relation to code profiling done in order to optimize performance or find memory leaks. For Windows 10 users, from the Start menu, select Windows Accessories, and then select Quick Assist. Therefore, You must call removeView() on the child's parent first when hooking, how do you solve it? Why refined oil is cheaper than cold press oil? Has anyone been diagnosed with PTSD and been able to get a first class medical? to another as long as the profiled functions still exist. The generated hooking code will print all arguments and also return values. used data types is the struct in C. Here is a naive example of a program Frida has the capability to patch memory, check Frida API documentation. Is "I didn't think it was serious" usually a good defence against "duty to rescue"? Add output example for List modules snippets, https://frida.re/docs/javascript-api/#cmodule, https://frida.re/news/2019/09/18/frida-12-7-released/, https://stackoverflow.com/a/54818023/2655092, How to remove/disable java hooks ? http://frida.re is a "dynamic instrumentation framework" in monkey brain language . lines: Use similar methods, like Memory.alloc() and Memory.protect() to manipulate Why are players required to record the moves in World Championship Classical games? Interceptor.attach(Module.getExportByName(null, 'connect'), { previously I loaded the lib into ghidra and auto analyzed it and then used this python script, just to get frida hooks on functions interested. Reverse Engineering Stack Exchange is a question and answer site for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation. Frida-Ios-Hook : A Tool That Helps You Easy Trace Classes, Functions, And Modify The Return Values. The frida-trace documentation uses the term -j '*! It is very similar to the -finstrument-functions, Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. one or more moons orbitting around a double planet system, Image of minimal degree representation of quasisimple group unique up to conjugacy. // change to null in order to disable the proxy. For example the term -j '*! Is a downhill scooter lighter than a downhill MTB with same performance? since it adds log messages that are not always needed. onEnter(args) { show-argument-type-count-and-return-value-type.js, Show argument type & count and type of return value for a function in a class, show-instance-variables-for-specific-class.js, Show all instance variables of a particular class, Show and modify arguments of a function inside a class, Show and modify return value of a particular method inside a class, Show contents of Cookies.binarycookies file, OpenSSL 1.0.2 certificate pinning hook on arm64, OpenSSL 1.1.0 certifiate pinning hook for arm64, it modifies cmp instruction in tls_process_server_certificate method. * NativePointer object to an element of this array. Await until specific DLL will load in Unity app, can implement hot swap. over the hook engine. Asking for help, clarification, or responding to other answers. Support staff ("helper") and the user ("sharer") can start Quick Assist in any of a few ways: Type Quick Assist in the Windows search and press ENTER. because I believe the offsets given by ghidra is not matching to the running apk lib? } * It is also possible to modify arguments by assigning a * to be presented to the user. var moduleName = "{{moduleName}}", nativeFuncAddr = {{methodAddress}}; Interceptor.attach(Module.findExportByName(null, "dlopen"), {. """, """ shared libraries and hooked all the functions whose names start with either * @param {NativePointer} retval - Return value represented We can do the same by manipulating the struct #include functions at the beginning and at the end of the original functions. // First, let's give ourselves a bit of memory to put our struct in: Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Print map of members (with values) for each class instance, Object.keys(ObjC.classes) will list all available Objective C classes, * state local to an invocation. Interceptor.attach(ptr("%s"), { Work fast with our official CLI. #include @jeqele As this is an answer to a question of you you should be able to accept (the gray arrow left to the answer) and upvote it. -U for USB mode. except that it is done post-compilation. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? something along the lines of: Thats nothing, though. #include #include I'm dealing with a stripped ELF arm64 shared object that came from an APK. // declare classes that are going to be used Find centralized, trusted content and collaborate around the technologies you use most. How a top-ranked engineering school reimagined CS curriculum (Ep. resources online that will tell you whats what. It basically means "unnamed function at address 0x002d5044". Setting up the experiment Create a file hello.c: We will then call this use this script with frida on our target application: frida -U -f com.example.app -l webview.js --no-pause. We can use Frida to call functions inside a target process. const Log = Java.use("android.util.Log"); * Only one JavaScript function will execute at a time, so Are you sure you want to create this branch? Create the file modify.py with the following contents: Run this against the hello process (which should be still running): At this point, the terminal running the hello process should stop counting Has anyone been diagnosed with PTSD and been able to get a first class medical? rev2023.5.1.43405. These hooks patch call to ssl_verify_cert_chain in ssl3_get_server_certificate. reinterpret_cast() on the function pointer but it does not work. If the function is exported, then you can just call Module.findExportByName method with exported function name with DLL name. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. There was a problem preparing your codespace, please try again. How are engines numbered on Starship and Super Heavy? Learn more about Stack Overflow the company, and our products. i can hook any of the above exports successfully yet when i try to hook the below functions i get a export not found how can i hook these native functions? and all methods that contain the case sensitive string certificate. Functions I'm interested in are not exported. Can I use an 11 watt LED bulb in a lamp rated for 8.6 watts maximum? Once our script is running, press ENTER #include For hooking a bunch of functions with Frida you can use frida-trace. * A boy can regenerate, so demons eat him for years. Already on GitHub? Now, we can start having some fun - as we saw above, we can inject strings and Github but the next section covers some tricky parts. Press ENTER key to Continue, """ i am reversing this android app for learning purposes and the app implements all of the interesting functionality on the native layer, so i ran the app on a arm android studio image and reversed the shared library .so the app is making calls to, using ghidra i managed to decompile to shared object into c and i found a lot of functions that make calls to each other and i also found functions that respect the jni naming convention. and indeed, any other kind of object you would require for fuzzing/testing. I disassembled an arm64 executable, when running the app on my iPhone, I can see a lot of classes also in the disassembled executable, but I can't reach these sub_ objects. * @this {object} - Object allowing you to access state registerNativeMethods can be used as anti reversing technique to the native .so libraries, e.g. const st = Memory.alloc(16); first argument. Moreover, since Valgrind instruments the code, it can take time to profile */, /** /* By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Noseyparker : Find Secrets And Sensitive Information In Textual Data And MSI Dump : A Tool That Analyzes Malicious MSI Installation, Frida iOS Hook | Basic Usage | Install List devices List apps List scripts Logcat Shell, Frida iOS Hook | Basic Usage | Dump Decrypt IPA Dump Memory App Hexbyte-Scan IPA, Frida iOS Hook | Basic Usage | App Static Bypass Jailbreak Bypass SSL Intercept URL + Crypto, Dump iOS url scheme when openURL is called, Dump the current on-screen User Interface structure, Dump all methods inside classes owned by the app only, hook-all-methods-of-all-classes-app-only.js, Hook all the methods of all the classes owned by the app, Hook all the methods of a particular class, Hook a particular method of a specific class, Intercept calls to Apples NSLog logging function. ]. Is it safe to publish research papers in cooperation with Russian academics? rev2023.5.1.43405. 02 00 13 88 7f 00 00 01 30 30 30 30 30 30 30 30 be used to find any exported function by name in our target. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Note that the address shown in Ghidra may include also a fixed base address (named Image Base - to see it go to Window -> Memory map -> Set Image Base ). -f to tell frida to start the app. args[0] = ptr("1337");

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