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182 lines
6.4 KiB
Markdown
182 lines
6.4 KiB
Markdown
# Frida 教程
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{{#include ../../../banners/hacktricks-training.md}}
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## 安装
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安装 **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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**在安卓中下载并安装** **frida server** ([Download the latest release](https://github.com/frida/frida/releases)).\
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一行命令以根模式重启adb，连接到它，上传frida-server，给予执行权限并在后台运行：
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```bash
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adb root; adb connect localhost:6000; sleep 1; adb push frida-server /data/local/tmp/; adb shell "chmod 755 /data/local/tmp/frida-server"; adb shell "/data/local/tmp/frida-server &"
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```
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**检查**它是否**正常工作**：
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```bash
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frida-ps -U #List packages and processes
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frida-ps -U | grep -i <part_of_the_package_name> #Get all the package name
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```
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## 教程
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### [Tutorial 1](frida-tutorial-1.md)
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**来源**: [https://medium.com/infosec-adventures/introduction-to-frida-5a3f51595ca1](https://medium.com/infosec-adventures/introduction-to-frida-5a3f51595ca1)\
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**APK**: [https://github.com/t0thkr1s/frida-demo/releases](https://github.com/t0thkr1s/frida-demo/releases)\
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**源代码**: [https://github.com/t0thkr1s/frida-demo](https://github.com/t0thkr1s/frida-demo)
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**请访问[链接阅读](frida-tutorial-1.md)。**
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### [Tutorial 2](frida-tutorial-2.md)
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**来源**: [https://11x256.github.io/Frida-hooking-android-part-2/](https://11x256.github.io/Frida-hooking-android-part-2/) (第2、3和4部分)\
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**APKs和源代码**: [https://github.com/11x256/frida-android-examples](https://github.com/11x256/frida-android-examples)
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**请访问[链接阅读。](frida-tutorial-2.md)**
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### [Tutorial 3](owaspuncrackable-1.md)
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**来源**: [https://joshspicer.com/android-frida-1](https://joshspicer.com/android-frida-1)\
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**APK**: [https://github.com/OWASP/owasp-mstg/blob/master/Crackmes/Android/Level_01/UnCrackable-Level1.apk](https://github.com/OWASP/owasp-mstg/blob/master/Crackmes/Android/Level_01/UnCrackable-Level1.apk)
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**请访问[链接阅读](owaspuncrackable-1.md)。**
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**您可以在这里找到更多精彩的Frida脚本:** [**https://codeshare.frida.re/**](https://codeshare.frida.re)
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## 快速示例
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### 从命令行调用Frida
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```bash
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frida-ps -U
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#Basic frida hooking
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frida -l disableRoot.js -f owasp.mstg.uncrackable1
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#Hooking before starting the app
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frida -U --no-pause -l disableRoot.js -f owasp.mstg.uncrackable1
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#The --no-pause and -f options allow the app to be spawned automatically,
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#frozen so that the instrumentation can occur, and the automatically
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#continue execution with our modified code.
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```
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### 基本 Python 脚本
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```python
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import frida, sys
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jscode = open(sys.argv[0]).read()
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process = frida.get_usb_device().attach('infosecadventures.fridademo')
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script = process.create_script(jscode)
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print('[ * ] Running Frida Demo application')
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script.load()
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sys.stdin.read()
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```
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### 无参数的函数钩子
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钩住类 `sg.vantagepoint.a.c` 的函数 `a()`
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```javascript
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Java.perform(function () {
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; rootcheck1.a.overload().implementation = function() {
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rootcheck1.a.overload().implementation = function() {
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send("sg.vantagepoint.a.c.a()Z Root check 1 HIT! su.exists()");
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return false;
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};
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});
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```
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钩住 java `exit()`
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```javascript
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var sysexit = Java.use("java.lang.System")
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sysexit.exit.overload("int").implementation = function (var_0) {
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send("java.lang.System.exit(I)V // We avoid exiting the application :)")
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}
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```
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钩住 MainActivity 的 `.onStart()` 和 `.onCreate()`
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```javascript
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var mainactivity = Java.use("sg.vantagepoint.uncrackable1.MainActivity")
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mainactivity.onStart.overload().implementation = function () {
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send("MainActivity.onStart() HIT!!!")
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var ret = this.onStart.overload().call(this)
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}
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mainactivity.onCreate.overload("android.os.Bundle").implementation = function (
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var_0
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) {
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send("MainActivity.onCreate() HIT!!!")
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var ret = this.onCreate.overload("android.os.Bundle").call(this, var_0)
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}
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```
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钩住安卓 `.onCreate()`
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```javascript
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var activity = Java.use("android.app.Activity")
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activity.onCreate.overload("android.os.Bundle").implementation = function (
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var_0
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) {
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send("Activity HIT!!!")
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var ret = this.onCreate.overload("android.os.Bundle").call(this, var_0)
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}
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```
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### 使用参数钩住函数并检索值
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钩住一个解密函数。打印输入，调用原始函数解密输入，最后打印明文数据：
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```javascript
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function getString(data) {
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var ret = ""
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for (var i = 0; i < data.length; i++) {
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ret += data[i].toString()
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}
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return ret
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}
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var aes_decrypt = Java.use("sg.vantagepoint.a.a")
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aes_decrypt.a.overload("[B", "[B").implementation = function (var_0, var_1) {
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send("sg.vantagepoint.a.a.a([B[B)[B doFinal(enc) // AES/ECB/PKCS7Padding")
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send("Key : " + getString(var_0))
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send("Encrypted : " + getString(var_1))
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var ret = this.a.overload("[B", "[B").call(this, var_0, var_1)
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send("Decrypted : " + ret)
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var flag = ""
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for (var i = 0; i < ret.length; i++) {
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flag += String.fromCharCode(ret[i])
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}
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send("Decrypted flag: " + flag)
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return ret //[B
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}
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```
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### Hooking functions and calling them with our input
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钩住一个接收字符串的函数，并用另一个字符串调用它（来自 [here](https://11x256.github.io/Frida-hooking-android-part-2/)）
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```javascript
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var string_class = Java.use("java.lang.String") // get a JS wrapper for java's String class
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my_class.fun.overload("java.lang.String").implementation = function (x) {
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//hooking the new function
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var my_string = string_class.$new("My TeSt String#####") //creating a new String by using `new` operator
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console.log("Original arg: " + x)
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var ret = this.fun(my_string) // calling the original function with the new String, and putting its return value in ret variable
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console.log("Return value: " + ret)
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return ret
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}
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```
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### 获取已创建类的对象
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如果您想提取已创建对象的某个属性，可以使用这个。
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在这个例子中，您将看到如何获取类 my_activity 的对象，以及如何调用函数 .secret()，该函数将打印对象的私有属性：
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```javascript
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Java.choose("com.example.a11x256.frida_test.my_activity", {
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onMatch: function (instance) {
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//This function will be called for every instance found by frida
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console.log("Found instance: " + instance)
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console.log("Result of secret func: " + instance.secret())
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},
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onComplete: function () {},
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})
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```
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## 其他 Frida 教程
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- [https://github.com/DERE-ad2001/Frida-Labs](https://github.com/DERE-ad2001/Frida-Labs)
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- [高级 Frida 使用博客系列的第 1 部分：IOS 加密库](https://8ksec.io/advanced-frida-usage-part-1-ios-encryption-libraries-8ksec-blogs/)
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{{#include ../../../banners/hacktricks-training.md}}
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