原文地址：http://blog.csdn.net/coc_k/article/details/52584059?locationNum=2&fps=1
简介：Xposed框架是一款可以在不修改APK的情况下影响程序运行的框架服务，通过替换/system/bin/app_process程序控制zygote进程，使得app_process在启动过程中会加载XposedBridge.jar这个jar包，从而完成对Zygote进程及其创建的虚拟机的劫持。
Github地址：https://github.com/rovo89/Xposed
首先我们Hook无参数的函数
1.建立一个空工程，编写获取序列号的简单例子
1.获取手机状态需要设置权限
<uses-permission android:name="android.permission.READ_PHONE_STATE">uses-permission>
2.编写布局文件
id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
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3. 编写主 Activity 类中的 onCreate 函数
package com.cockroach.hook_object;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView tv1 = (TextView) findViewById(R.id.tv1);
TextView tv2 = (TextView) findViewById(R.id.tv2);
TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
tv1.setText("imei:" + tm.getDeviceId());
tv2.setText("imsi:" + tm.getSubscriberId());
}
}
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4. 完成安装，运行效果如下：
这就是我们的等会要hook的apk程序，下面编写xposed插件
2.建立一个无 activity 的工程， 编写 Xposed 插件
1. 设置清单文件
在 application 标签中增加模块说明信息
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<meta-data android:name="xposedmodule" android:value="true">meta-data>
<meta-data android:name="xposeddescription" android:value="qq迅雷提速神器">meta-data>
<meta-data android:name="xposedminversion" android:value="54">meta-data>
application>
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2. 导入 xposed 库文件
将 xposed 库文件 XposedBridgeApi-XX.jar， 放入 app/lib 文件夹下
需要注意的是： 修改 Scope 为 Provided
3. 创建一个类， Main， 实现 xposed 中的接口 IXposedHookLoadPackage 并重写方法handleLoadPackage
package com.cockroach.xposedhookdemo;
import android.telephony.TelephonyManager;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodReplacement;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
/**
* Created by 18459 on 2016/6/27.
*/
public class Main implements IXposedHookLoadPackage{
@Override
public void handleLoadPackage(XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {
if(!loadPackageParam.packageName.equals("com.cockroach.hook_object"))
return;
XposedBridge.log("Loaded app: " + loadPackageParam.packageName);
XposedHelpers.findAndHookMethod(TelephonyManager.class, "getSubscriberId", new XC_MethodReplacement() {
@Override
protected Object replaceHookedMethod(MethodHookParam methodHookParam) throws Throwable {
return "Hook 成功了 哈哈！！！";
}
});
}
}
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4. 声明主入口类路径
需要在 main 文件夹下建立 assets 文件夹中新建一个 xposed_init 的文件，并在其中声明主入口类
到这里这个hook无参函数的简单demo插件就完成了，
然后我们hook有参数的函数
1.建立一个空工程，编写一个登陆界面，用自定义的一个方法
布局文件中添加
<EditText
android:id="@+id/et1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入你的账号"/>
<EditText
android:id="@+id/et2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入你的密码"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="my_onClick"
android:text="登陆"
android:textSize="26dp"/>
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MainActivity中添加
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void my_onClick(View view) {
EditText editText = (EditText) findViewById(R.id.et1);
EditText editText1 = (EditText) findViewById(R.id.et2);
String string = editText.getText().toString();
String string1 = editText1.getText().toString();
if(CheckRegister(string,string1)){
Toast.makeText(MainActivity.this,"登陆成功",Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(MainActivity.this,"登陆失败",Toast.LENGTH_SHORT).show();
}
}
private boolean CheckRegister(String string, String string1) {
return string.equals(string1);
}
}
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效果，两个输入框输入相同时 提示登陆成功，不同时 提示登陆失败
到这里测试app完成
2.接下来我们HOOK CheckRegister方法，达到不管输入什么，都提示登陆成功
这里配置和前面无参插件编写一样，只需修改MainActivity
package com.cockroach.xposedhookdemo;
import android.util.Log;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
/**
* Created by 18459 on 2016/6/27.
*/
public class Main implements IXposedHookLoadPackage{
String packName = "com.cockroach.myapplication";
String className = "com.cockroach.myapplication.MainActivity";
public void handleLoadPackage(XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {
if(!loadPackageParam.packageName.equals(packName))
return;
XposedBridge.log("Loaded app: " + loadPackageParam.packageName);
XposedHelpers.findAndHookMethod(className,
loadPackageParam.classLoader,
"CheckRegister",
String.class,
String.class,
new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
super.beforeHookedMethod(param);
Log.d("xposedplugin", (String) param.args[0]);
Log.d("xposedplugin", (String) param.args[1]);
param.args[0] = "123";
param.args[1] = "123";
param.setResult(true);
}
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
super.afterHookedMethod(param);
Log.d("xposedplugin", (String) param.args[0]);
Log.d("xposedplugin", (String) param.args[1]);
}
});
}
}
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到这里hook有参函数的插件完成了
测试app有了, 插件app有了,我们如何去使用？
上面我们写了共写了两个测试app和两个插件app,我们用第一对app,来做测试
1.在root后的手机上安装xposed框架app，然后进入app，选择 框架->安装更新，此时会重启，
2.将测试apk和插件apk都安装到手机上， 当插件apk安装到手机上时，框架xposed app会检测到插件，
3.进入框架app,选择 模块，选中我们写的插件，然后重启手机
开机后我们运行测试app,看到已经hook成功了
hook之后运行测试app
如果你是新手，没看明白可以问我，也许可以帮到你。
