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https://github.com/carlospolop/hacktricks
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407 lines
15 KiB
Markdown
407 lines
15 KiB
Markdown
# iOS Frida Configuration
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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<figure><img src="/.gitbook/assets/image (2).png" alt=""><figcaption></figcaption></figure>
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Deepen your expertise in **Mobile Security** with 8kSec Academy. Master iOS and Android security through our self-paced courses and get certified:
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{% embed url="https://academy.8ksec.io/" %}
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## Installing Frida
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**Steps to install Frida on a Jailbroken device:**
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1. Open Cydia/Sileo app.
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2. Navigate to Manage -> Sources -> Edit -> Add.
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3. Enter "https://build.frida.re" as the URL.
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4. Go to the newly added Frida source.
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5. Install the Frida package.
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If you are using **Corellium** you will need to download the Frida release from [https://github.com/frida/frida/releases](https://github.com/frida/frida/releases) (`frida-gadget-[yourversion]-ios-universal.dylib.gz`) and unpack and copy to the dylib location Frida asks for, e.g.: `/Users/[youruser]/.cache/frida/gadget-ios.dylib`
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After installed, you can use in your PC the command **`frida-ls-devices`** and check that the device appears (your PC needs to be able to access it).\
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Execute also **`frida-ps -Uia`** to check the running processes of the phone.
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## Frida without Jailbroken device & without patching the app
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Check this blog post about how to use Frida in non-jailbroken devices without patching the app: [https://mrbypass.medium.com/unlocking-potential-exploring-frida-objection-on-non-jailbroken-devices-without-application-ed0367a84f07](https://mrbypass.medium.com/unlocking-potential-exploring-frida-objection-on-non-jailbroken-devices-without-application-ed0367a84f07)
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## Frida Client Installation
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Install **frida tools**:
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```bash
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pip install frida-tools
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pip install frida
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```
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With the Frida server installed and the device running and connected, **check** if the client is **working**:
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```bash
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frida-ls-devices # List devices
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frida-ps -Uia # Get running processes
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```
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## Frida Trace
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```bash
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# Functions
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## Trace all functions with the word "log" in their name
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frida-trace -U <program> -i "*log*"
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frida-trace -U <program> -i "*log*" | swift demangle # Demangle names
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# Objective-C
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## Trace all methods of all classes
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frida-trace -U <program> -m "*[* *]"
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## Trace all methods with the word "authentication" from classes that start with "NE"
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frida-trace -U <program> -m "*[NE* *authentication*]"
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# Plug-In
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## To hook a plugin that is momentarely executed prepare Frida indicating the ID of the Plugin binary
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frida-trace -U -W <if-plugin-bin> -m '*[* *]'
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```
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### Get all classes and methods
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* Auto complete: Just execute `frida -U <program>`
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<figure><img src="../../.gitbook/assets/image (1159).png" alt=""><figcaption></figcaption></figure>
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* Get **all** available **classes** (filter by string)
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{% code title="/tmp/script.js" %}
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```javascript
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// frida -U <program> -l /tmp/script.js
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var filterClass = "filterstring";
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if (ObjC.available) {
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for (var className in ObjC.classes) {
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if (ObjC.classes.hasOwnProperty(className)) {
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if (!filterClass || className.includes(filterClass)) {
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console.log(className);
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}
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}
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}
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} else {
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console.log("Objective-C runtime is not available.");
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}
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```
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{% endcode %}
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* Get **all** **methods** of a **class** (filter by string)
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{% code title="/tmp/script.js" %}
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```javascript
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// frida -U <program> -l /tmp/script.js
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var specificClass = "YourClassName";
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var filterMethod = "filtermethod";
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if (ObjC.available) {
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if (ObjC.classes.hasOwnProperty(specificClass)) {
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var methods = ObjC.classes[specificClass].$ownMethods;
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for (var i = 0; i < methods.length; i++) {
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if (!filterMethod || methods[i].includes(filterClass)) {
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console.log(specificClass + ': ' + methods[i]);
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}
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}
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} else {
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console.log("Class not found.");
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}
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} else {
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console.log("Objective-C runtime is not available.");
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}
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```
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{% endcode %}
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* **Call a function**
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```javascript
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// Find the address of the function to call
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const func_addr = Module.findExportByName("<Prog Name>", "<Func Name>");
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// Declare the function to call
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const func = new NativeFunction(
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func_addr,
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"void", ["pointer", "pointer", "pointer"], {
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});
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var arg0 = null;
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// In this case to call this function we need to intercept a call to it to copy arg0
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Interceptor.attach(wg_log_addr, {
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onEnter: function(args) {
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arg0 = new NativePointer(args[0]);
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}
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});
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// Wait untill a call to the func occurs
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while (! arg0) {
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Thread.sleep(1);
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console.log("waiting for ptr");
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}
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var arg1 = Memory.allocUtf8String('arg1');
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var txt = Memory.allocUtf8String('Some text for arg2');
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wg_log(arg0, arg1, txt);
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console.log("loaded");
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```
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## Frida Fuzzing
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### Frida Stalker
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[From the docs](https://frida.re/docs/stalker/): Stalker is Frida’s code **tracing engine**. It allows threads to be **followed**, **capturing** every function, **every block**, even every instruction which is executed.
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You have an example implementing Frida Stalker in [https://github.com/poxyran/misc/blob/master/frida-stalker-example.py](https://github.com/poxyran/misc/blob/master/frida-stalker-example.py)
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This is another example to attach Frida Stalker every time a function is called:
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```javascript
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console.log("loading");
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const wg_log_addr = Module.findExportByName("<Program>", "<function_name>");
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const wg_log = new NativeFunction(
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wg_log_addr,
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"void", ["pointer", "pointer", "pointer"], {
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});
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Interceptor.attach(wg_log_addr, {
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onEnter: function(args) {
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console.log(`logging the following message: ${args[2].readCString()}`);
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Stalker.follow({
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events: {
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// only collect coverage for newly encountered blocks
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compile: true,
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},
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onReceive: function (events) {
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const bbs = Stalker.parse(events, {
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stringify: false,
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annotate: false
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});
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console.log("Stalker trace of write_msg_to_log: \n" + bbs.flat().map(DebugSymbol.fromAddress).join('\n'));
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}
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});
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},
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onLeave: function(retval) {
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Stalker.unfollow();
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Stalker.flush(); // this is important to get all events
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}
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});
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```
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{% hint style="danger" %}
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This is interesting from debugging purposes but for fuzzing, to be constantly **`.follow()`** and **`.unfollow()`** is very inefficient.
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{% endhint %}
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## [Fpicker](https://github.com/ttdennis/fpicker)
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[**fpicker**](https://github.com/ttdennis/fpicker) is a **Frida-based fuzzing suite** that offers a variety of fuzzing modes for in-process fuzzing, such as an AFL++ mode or a passive tracing mode. It should run on all platforms that are supported by Frida.
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* [**Install fpicker**](https://github.com/ttdennis/fpicker#requirements-and-installation) **& radamsa**
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```bash
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# Get fpicker
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git clone https://github.com/ttdennis/fpicker
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cd fpicker
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# Get Frida core devkit and prepare fpicker
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wget https://github.com/frida/frida/releases/download/16.1.4/frida-core-devkit-16.1.4-[yourOS]-[yourarchitecture].tar.xz
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# e.g. https://github.com/frida/frida/releases/download/16.1.4/frida-core-devkit-16.1.4-macos-arm64.tar.xz
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tar -xf ./*tar.xz
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cp libfrida-core.a libfrida-core-[yourOS].a #libfrida-core-macos.a
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# Install fpicker
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make fpicker-[yourOS] # fpicker-macos
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# This generates ./fpicker
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# Install radamsa (fuzzer generator)
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brew install radamsa
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```
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* **Prepare the FS:**
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```bash
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# From inside fpicker clone
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mkdir -p examples/wg-log # Where the fuzzing script will be
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mkdir -p examples/wg-log/out # For code coverage and crashes
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mkdir -p examples/wg-log/in # For starting inputs
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# Create at least 1 input for the fuzzer
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echo Hello World > examples/wg-log/in/0
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```
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* **Fuzzer script** (`examples/wg-log/myfuzzer.js`):
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{% code title="examples/wg-log/myfuzzer.js" %}
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```javascript
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// Import the fuzzer base class
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import { Fuzzer } from "../../harness/fuzzer.js";
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class WGLogFuzzer extends Fuzzer {
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constructor() {
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console.log("WGLogFuzzer constructor called")
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// Get and declare the function we are going to fuzz
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var wg_log_addr = Module.findExportByName("<Program name>", "<func name to fuzz>");
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var wg_log_func = new NativeFunction(
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wg_log_addr,
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"void", ["pointer", "pointer", "pointer"], {
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});
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// Initialize the object
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super("<Program nane>", wg_log_addr, wg_log_func);
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this.wg_log_addr = wg_log_addr; // We cannot use "this" before calling "super"
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console.log("WGLogFuzzer in the middle");
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// Prepare the second argument to pass to the fuzz function
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this.tag = Memory.allocUtf8String("arg2");
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// Get the first argument we need to pass from a call to the functino we want to fuzz
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var wg_log_global_ptr = null;
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console.log(this.wg_log_addr);
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Interceptor.attach(this.wg_log_addr, {
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onEnter: function(args) {
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console.log("Entering in the function to get the first argument");
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wg_log_global_ptr = new NativePointer(args[0]);
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}
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});
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while (! wg_log_global_ptr) {
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Thread.sleep(1)
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}
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this.wg_log_global_ptr = wg_log_global_ptr;
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console.log("WGLogFuzzer prepare ended")
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}
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// This function is called by the fuzzer with the first argument being a pointer into memory
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// where the payload is stored and the second the length of the input.
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fuzz(payload, len) {
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// Get a pointer to payload being a valid C string (with a null byte at the end)
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var payload_cstring = payload.readCString(len);
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this.payload = Memory.allocUtf8String(payload_cstring);
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// Debug and fuzz
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this.debug_log(this.payload, len);
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// Pass the 2 first arguments we know the function needs and finally the payload to fuzz
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this.target_function(this.wg_log_global_ptr, this.tag, this.payload);
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}
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}
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const f = new WGLogFuzzer();
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rpc.exports.fuzzer = f;
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```
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{% endcode %}
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* **Compile** the fuzzer:
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```bash
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# From inside fpicker clone
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## Compile from "myfuzzer.js" to "harness.js"
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frida-compile examples/wg-log/myfuzzer.js -o harness.js
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```
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* Call fuzzer **`fpicker`** using **`radamsa`**:
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{% code overflow="wrap" %}
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```bash
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# Indicate fpicker to fuzz a program with the harness.js script and which folders to use
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fpicker -v --fuzzer-mode active -e attach -p <Program to fuzz> -D usb -o examples/wg-log/out/ -i examples/wg-log/in/ -f harness.js --standalone-mutator cmd --mutator-command "radamsa"
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# You can find code coverage and crashes in examples/wg-log/out/
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```
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{% endcode %}
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{% hint style="danger" %}
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In this case we **aren't restarting the app or restoring the state** after each payload. So, if Frida finds a **crash** the **next inputs** after that payload might also **crash the app** (because the app is in a unstable state) even if the **input shouldn't crash** the app.
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Moreover, Frida will hook into exception signals of iOS, so when **Frida finds a crash**, probably an **iOS crash reports won't be generated**.
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To prevent this, for example, we could restart the app after each Frida crash.
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{% endhint %}
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### Logs & Crashes
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You can check the **macOS console** or the **`log`** cli to check macOS logs.\
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You can check also the logs from iOS using **`idevicesyslog`**.\
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Some logs will omit information adding **`<private>`**. To show all the info you need to install some profile from [https://developer.apple.com/bug-reporting/profiles-and-logs/](https://developer.apple.com/bug-reporting/profiles-and-logs/) to enable that private info.
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If you don't know what to do:
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```sh
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vim /Library/Preferences/Logging/com.apple.system.logging.plist
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>Enable-Private-Data</key>
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<true/>
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</dict>
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</plist>
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killall -9 logd
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```
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You can check the crashes in:
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* **iOS**
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* Settings → Privacy → Analytics & Improvements → Analytics Data
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* `/private/var/mobile/Library/Logs/CrashReporter/`
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* **macOS**:
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* `/Library/Logs/DiagnosticReports/`
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* `~/Library/Logs/DiagnosticReports`
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{% hint style="warning" %}
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iOS only stores 25 crashes of the same app, so you need to clean that or iOS will stop creating crashes.
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{% endhint %}
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## Frida Android Tutorials
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{% content-ref url="../android-app-pentesting/frida-tutorial/" %}
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[frida-tutorial](../android-app-pentesting/frida-tutorial/)
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{% endcontent-ref %}
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## References
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* [https://www.briskinfosec.com/blogs/blogsdetail/Getting-Started-with-Frida](https://www.briskinfosec.com/blogs/blogsdetail/Getting-Started-with-Frida)
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||
|
||
<figure><img src="/.gitbook/assets/image (2).png" alt=""><figcaption></figcaption></figure>
|
||
|
||
Deepen your expertise in **Mobile Security** with 8kSec Academy. Master iOS and Android security through our self-paced courses and get certified:
|
||
|
||
{% embed url="https://academy.8ksec.io/" %}
|
||
|
||
{% hint style="success" %}
|
||
Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
|
||
Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
|
||
|
||
<details>
|
||
|
||
<summary>Support HackTricks</summary>
|
||
|
||
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
|
||
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
|
||
* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
|
||
|
||
</details>
|
||
{% endhint %}
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