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359 lines
12 KiB
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359 lines
12 KiB
Markdown
# iOS Frida配置
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<details>
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<summary><strong>从零开始学习AWS黑客技术，成为专家</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE（HackTricks AWS红队专家）</strong></a><strong>！</strong></summary>
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* 获取[**官方PEASS & HackTricks周边产品**](https://peass.creator-spring.com)
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* 通过向[**HackTricks**](https://github.com/carlospolop/hacktricks)和[**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github仓库提交PR来分享您的黑客技巧。
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</details>
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## 安装Frida
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**在越狱设备上安装Frida的步骤：**
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1. 打开Cydia/Sileo应用。
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2. 转到Manage -> Sources -> Edit -> Add。
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3. 输入"https://build.frida.re"作为URL。
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4. 进入新添加的Frida源。
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5. 安装Frida软件包。
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如果您使用**Corellium**，您需要从[https://github.com/frida/frida/releases](https://github.com/frida/frida/releases)下载Frida版本（`frida-gadget-[yourversion]-ios-universal.dylib.gz`），并解压缩并复制到Frida要求的dylib位置，例如：`/Users/[youruser]/.cache/frida/gadget-ios.dylib`
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安装完成后，您可以在PC上使用命令**`frida-ls-devices`**，检查设备是否显示（您的PC需要能够访问它）。\
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还可以执行**`frida-ps -Uia`**来检查手机的运行进程。
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## 无需越狱设备和无需对应用程序打补丁的Frida
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查看这篇关于如何在非越狱设备上使用Frida而无需对应用程序打补丁的博文：[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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## 安装Frida客户端
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安装**Frida工具**：
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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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安装了Frida服务器并连接设备后，**检查**客户端是否**正常工作**：
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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跟踪
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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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### 获取所有类和方法
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* 自动完成：只需执行 `frida -U <program>`
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<figure><img src="../../.gitbook/assets/image (687).png" alt=""><figcaption></figcaption></figure>
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* 获取**所有**可用的**类**（按字符串过滤）
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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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* 获取类的所有方法（按字符串过滤）
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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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* **调用函数**
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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模糊测试
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### Frida Stalker
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[官方文档](https://frida.re/docs/stalker/#:~:text=Stalker%20is%20Frida's%20code%20tracing,every%20instruction%20which%20is%20executed.): Stalker是Frida的代码**追踪引擎**。它允许跟踪线程，**捕获**每个函数，**每个代码块**，甚至每个执行的指令。
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你可以在[https://github.com/poxyran/misc/blob/master/frida-stalker-example.py](https://github.com/poxyran/misc/blob/master/frida-stalker-example.py)找到一个实现Frida Stalker的示例。
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这是另一个示例，每次调用函数时都会附加Frida Stalker：
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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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这对于调试目的很有趣，但对于模糊测试来说，不断地**`.follow()`**和**`.unfollow()`**是非常低效的。
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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) 是一个基于**Frida的模糊测试套件**，提供各种模糊测试模式，如AFL++模式或被动跟踪模式。它应该在所有Frida支持的平台上运行。
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* [**安装 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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* **准备文件系统：**
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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脚本** (`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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* **编译** 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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* 使用 **`radamsa`** 调用模糊器 **`fpicker`**：
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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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在这种情况下，我们在每个有效负载之后**不重新启动应用程序或恢复状态**。因此，如果Frida发现一个**崩溃**，那么在该有效负载之后的**下一个输入**可能也会**导致应用程序崩溃**（因为应用程序处于不稳定状态），即使**输入不应导致**应用程序崩溃。
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此外，Frida将钩入iOS的异常信号，因此当**Frida发现崩溃**时，可能**不会生成iOS崩溃报告**。
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为了防止这种情况，例如，我们可以在每次Frida崩溃后重新启动应用程序。
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{% endhint %}
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### 日志和崩溃
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您可以检查**macOS控制台**或**`log`** cli来查看macOS日志。\
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您还可以使用**`idevicesyslog`**来检查iOS的日志。\
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一些日志将省略添加**`<private>`**的信息。要显示所有信息，您需要从[https://developer.apple.com/bug-reporting/profiles-and-logs/](https://developer.apple.com/bug-reporting/profiles-and-logs/)安装一些配置文件以启用私人信息。
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如果您不知道该怎么办：
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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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您可以在以下位置检查崩溃情况：
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- **iOS**
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- 设置 → 隐私 → 分析与改进 → 分析数据
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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仅存储同一应用的25个崩溃情况，因此您需要清理，否则iOS将停止创建崩溃报告。
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{% endhint %}
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## Frida Android 教程
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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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## 参考资料
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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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