《安卓逆向这档事》八、Sorry，会Hook真的可以为所欲为-xposed快速上手(下)快速hook

正己发表于 2023-2-19 20:51

本帖最后由正己于 2023-10-10 18:50 编辑

https://www.bilibili.com/video/BV1Sb411X7D6/?spm_id_from=333.788&vd_source=6dde16dc6479f00694baaf73a2225452

# 一、课程目标
---
1.了解Xposed常用API
2.借助lspatch实现免root注入
3.SimpleHook快速hook

# 二、工具
---

1.教程Demo(更新)
2.MT管理器/NP管理器
3.算法助手
4.jadx-gui
5.simplehook
6.Android Studio

# 三、课程内容
---

虚拟机连接模拟器方法
https://www.cnblogs.com/voyage1969/p/14876449.html

## Xposed常用API

### 1.Hook变量
静态变量与实例变量：
- 静态变量（static）：类被初始化，同步进行初始化
- 非静态变量：类被实例化（产生一个对象的时候），进行初始化

静态变量
```java
final Class clazz = XposedHelpers.findClass("类名", classLoader);
XposedHelpers.setStaticIntField(clazz, "变量名", 999);

```
实例变量
```java
final Class clazz = XposedHelpers.findClass("类名", classLoader);
XposedBridge.hookAllConstructors(clazz, new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   super.afterHookedMethod(param);
   //param.thisObject获取当前所属的对象
   Object ob = param.thisObject;
   XposedHelpers.setIntField(ob,"变量名",9999);
}
});

```

### 2.Hook构造函数

无参构造函数
```java
XposedHelpers.findAndHookConstructor("com.zj.wuaipojie.Demo", classLoader, new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
   super.beforeHookedMethod(param);
}
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   super.afterHookedMethod(param);
}
});
```
有参构造函数
```java
XposedHelpers.findAndHookConstructor("com.zj.wuaipojie.Demo", classLoader, String.class, new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
   super.beforeHookedMethod(param);
}
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   super.afterHookedMethod(param);
}
});

```

### 3.Hook multiDex方法
```java
XposedHelpers.findAndHookMethod(Application.class, "attach", Context.class, new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   ClassLoader cl= ((Context)param.args).getClassLoader();
   Class<?> hookclass=null;
   try {
         hookclass=cl.loadClass("类名");
   }catch (Exception e){
         Log.e("zj2595","未找到类",e);
         return;
   }
   XposedHelpers.findAndHookMethod(hookclass, "方法名", new XC_MethodHook() {
         @Override
         protected void afterHookedMethod(MethodHookParam param) throws Throwable {
         }
   });
}
});

```

### 4.主动调用
静态方法:
```java
Class clazz = XposedHelpers.findClass("类名",lpparam.classLoader);
XposedHelpers.callStaticMethod(clazz,"方法名",参数(非必须));
```
实例方法:
```java
Class clazz = XposedHelpers.findClass("类名",lpparam.classLoader);
XposedHelpers.callMethod(clazz.newInstance(),"方法名",参数(非必须));

```

### 5.Hook内部类
内部类:类里还有一个类class
```java
XposedHelpers.findAndHookMethod("com.zj.wuaipojie.Demo$InnerClass", lpparam.classLoader, "innerFunc",String.class,new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
   super.beforeHookedMethod(param);

}
});

```

### 6.反射大法
```java
Class clazz = XposedHelpers.findClass("com.zj.wuaipojie.Demo", lpparam.classLoader);
XposedHelpers.findAndHookMethod("com.zj.wuaipojie.Demo$InnerClass", lpparam.classLoader, "innerFunc",String.class,new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
   super.beforeHookedMethod(param);
   //第一步找到类
   //找到方法，如果是私有方法就要setAccessible设置访问权限
   //invoke主动调用或者set修改值(变量)
   Class democlass = Class.forName("com.zj.wuaipojie.Demo",false,lpparam.classLoader);
   Method demomethod = democlass.getDeclaredMethod("refl");
   demomethod.setAccessible(true);
   demomethod.invoke(clazz.newInstance());
}
});

```

### 7.遍历所有类下的所有方法

```java
XposedHelpers.findAndHookMethod(ClassLoader.class, "loadClass", String.class, new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   super.afterHookedMethod(param);
   Class clazz = (Class) param.getResult();
   String clazzName = clazz.getName();
   //排除非包名的类
   if(clazzName.contains("com.zj.wuaipojie")){
         Method[] mds = clazz.getDeclaredMethods();
         for(int i =0;i<mds.length;i++){
            final Method md = mds;
            int mod = mds.getModifiers();
            //去除抽象、native、接口方法
            if(!Modifier.isAbstract(mod)
               && !Modifier.isNative(mod)
               &&!Modifier.isAbstract(mod)){
               XposedBridge.hookMethod(mds, new XC_MethodHook() {
                     @Override
                     protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
                        super.beforeHookedMethod(param);
                        Log.d("zj2595",md.toString());
                     }
               });
            }

      }
   }

}
});

```

### 8.Xposed妙用
字符串赋值定位:
```java
XposedHelpers.findAndHookMethod("android.widget.TextView", lpparam.classLoader, "setText", CharSequence.class, new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
   super.beforeHookedMethod(param);
   Log.d("zj2595",param.args.toString());
            if(param.args.equals("已过期")){
               printStackTrace();
            }
}
});
private static void printStackTrace() {
Throwable ex = new Throwable();
StackTraceElement[] stackElements = ex.getStackTrace();
for (int i = 0; i < stackElements.length; i++) {
   StackTraceElement element = stackElements;
   Log.d("zj2595","at " + element.getClassName() + "." + element.getMethodName() + "(" + element.getFileName() + ":" + element.getLineNumber() + ")");
}
}
```

点击事件监听:
```java
Class clazz = XposedHelpers.findClass("android.view.View", lpparam.classLoader);
XposedBridge.hookAllMethods(clazz, "performClick", new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   super.afterHookedMethod(param);
   Object listenerInfoObject = XposedHelpers.getObjectField(param.thisObject, "mListenerInfo");
   Object mOnClickListenerObject = XposedHelpers.getObjectField(listenerInfoObject, "mOnClickListener");
   String callbackType = mOnClickListenerObject.getClass().getName();
   Log.d("zj2595",callbackType);
}
});

```

改写布局:
```java
XposedHelpers.findAndHookMethod("com.zj.wuaipojie.ui.ChallengeSixth", lpparam.classLoader,
   "onCreate", Bundle.class, new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
   super.afterHookedMethod(param);
   View img = (View)XposedHelpers.callMethod(param.thisObject,
            "findViewById", 0x7f0800de);
   img.setVisibility(View.GONE);

}
});

```

## Xposed模块patch

(https://github.com/LSPosed/LSPatch)

PS:最低支持安卓9

## Xposed快速Hook
(https://github.com/littleWhiteDuck/SimpleHook)

(https://github.com/Xposed-Modules-Repo/me.jsonet.jshook)
## Xpsoed源码

(https://www.52pojie.cn/thread-1149210-1-1.html)
(https://www.52pojie.cn/thread-1694093-1-1.html)
[[原创]源码编译（2）——Xopsed源码编译详解](https://bbs.kanxue.com/thread-269616.htm#msg_header_h2_0)

#四、课后小作业
---
让我想想

# 五、答疑
---
提一嘴，我感觉肯定会有人问我的as怎么跟他的不一样，那是因为我用了一些插件。插件入口：左上角File->Settings->Plugins，在这里可以搜索并安装你想安装的插件，以下是我用的插件

# 六、视频及课件地址
---

[百度云](https://pan.baidu.com/s/1cFWTLn14jeWfpXxlx3syYw?pwd=nqu9)
[阿里云](https://www.aliyundrive.com/s/TJoKMK6du6x)
[哔哩哔哩](https://www.bilibili.com/video/BV1wT411N7sV/?spm_id_from=333.788&vd_source=6dde16dc6479f00694baaf73a2225452)
PS:解压密码都是52pj，阿里云由于不能分享压缩包，所以下载exe文件，双击自解压

# 七、其他章节
---
[《安卓逆向这档事》一、模拟器环境搭建](https://www.52pojie.cn/thread-1695141-1-1.html)
[《安卓逆向这档事》二、初识APK文件结构、双开、汉化、基础修改](https://www.52pojie.cn/thread-1695796-1-1.html)
[《安卓逆向这档事》三、初识smail，vip终结者](https://www.52pojie.cn/thread-1701353-1-1.html)
[《安卓逆向这档事》四、恭喜你获得广告&弹窗静默卡](https://www.52pojie.cn/thread-1706691-1-1.html)
[《安卓逆向这档事》五、1000-7=？&动态调试&Log插桩](https://www.52pojie.cn/thread-1714727-1-1.html)
[《安卓逆向这档事》六、校验的N次方-签名校验对抗、PM代{过}{滤}理、IO重定向](https://www.52pojie.cn/thread-1731181-1-1.html)
[《安卓逆向这档事》七、Sorry，会Hook真的可以为所欲为-Xposed快速上手(上)模块编写,常用Api](https://www.52pojie.cn/thread-1740944-1-1.html)

正己发表于 2023-2-19 20:59

侃遍天下无二人发表于 2023-2-19 20:56
老师老师，hook对被加固的应用有效吗（假定需要hook的方法脱壳后可以找到，壳子有np管理器绕不过去的签名校 ...

有效啊，上节课那个加固通杀，免费版基本都能hook

正己发表于 2024-1-2 12:22

niceqiezi 发表于 2024-1-1 20:43
我的学习之路在第六集遇到了困境，怎么都抓不到日志，OK，跳过
又死于第七集的硬件环境，看完了但是不太懂 ...

xposed需要学一下，可以哔哩哔哩搜一下android studio的安装配置，就可以跳过硬件环境，跟着开发就行

侃遍天下无二人 发表于 2023-2-19 20:56

本帖最后由侃遍天下无二人于 2023-2-19 20:59 编辑

老师老师，hook对被加固的应用有效吗（假定需要hook的方法脱壳后可以找到，壳子有np管理器绕不过去的签名校验，但不检测root或xposed框架）

另：把虚拟机和模拟器用【桥接模式】放到和电脑相同的ip段应该就能直接连上了，要是用NAT想连接确实很麻烦

klxn0-0 发表于 2023-2-19 20:57

simplehook闪亮登场{:1_918:}

侃遍天下无二人 发表于 2023-2-19 20:59

klxn0-0 发表于 2023-2-19 20:57
simplehook闪亮登场

大佬就是隔壁np的快乐小牛吧{:1_918:}

klxn0-0 发表于 2023-2-19 21:15

侃遍天下无二人发表于 2023-2-19 20:59
大佬就是隔壁np的快乐小牛吧

不是大佬{:1_907:}楼主才是

yuanyxh 发表于 2023-2-19 21:20

三百集之时，便是我攻破tx服务器之日{:301_988:}

hasoe 发表于 2023-2-19 21:21

支持一下好教材

潋天堂 发表于 2023-2-19 21:27

正己大佬，什么都不懂能学会不

zhr19970910 发表于 2023-2-19 21:33

感谢大佬

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《安卓逆向这档事》八、Sorry，会Hook真的可以为所欲为-xposed快速上手(下)快速hook