XposedHook基础

0.说明

所有内容均是摘抄自吾爱破解正己，只是合并两节内容，方便后续学习，原帖地址：

《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)

《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)

1.导包

若Gradle无法自动导包，手动将下载的xposedBridgeApi.jar包拖进libs文件夹
右击jar包，选择add as library

修改build.gradle,将此处修改为compileOnly 默认的是implementation

implementation 使用该方式依赖的库将会参与编译和打包
compileOnly 只在编译时有效，不会参与打包

2.配置AndroidManifest.xml

<!-- 是否是xposed模块，xposed根据这个来判断是否是模块 -->
<meta-data
    android:name="xposedmodule"
    android:value="true" />
<!-- 模块描述，显示在xposed模块列表那里第二行 -->
<meta-data
    android:name="xposeddescription"
    android:value="这是一个Xposed模块" />
<!-- 最低xposed版本号(lib文件名可知) -->
<meta-data
    android:name="xposedminversion"
    android:value="89" />

3.创建Hook入口类

以下是示例代码

import de.robv.android.xposed.IXposedHookLoadPackage; 
import de.robv.android.xposed.callbacks.XC_LoadPackage;

public class Hook implements IXposedHookLoadPackage {
    @Override
    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {

    }
}

4.配置Hook入口点

app新建-->Folder-->Assets Folder，创建xposed_init(不要后缀名):只有一行代码，就是说明入口类

xposed_init内容为Hook入口类的全限定名

5.常用Hook

5.1 Hook普通方法

修改返回值

XposedHelpers.findAndHookMethod("com.tcgg.demo.Demo", loadPackageParam.classLoader, "a", String.class, new XC_MethodHook() {
    @Override
    protected void afterHookedMethod(MethodHookParam param) throws Throwable {
        super.afterHookedMethod(param);
        param.setResult(999);
    }
});

修改参数

XposedHelpers.findAndHookMethod("com.tcgg.demo.Demo", loadPackageParam.classLoader, "a", String.class, new XC_MethodHook() {
    @Override
    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
        super.beforeHookedMethod(param);
        String a = "pt";
        param.args[0] = a;    }
});

5.2 Hook复杂&自定义参数

Class a = loadPackageParam.classLoader.loadClass("类名");
XposedBridge.hookAllMethods(a, "方法名", new XC_MethodHook() {
    @Override
    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
        super.beforeHookedMethod(param);

        }
});

5.3 Hook替换函数

Class a = classLoader.loadClass("类名")
XposedBridge.hookAllMethods(a,"方法名",new XC_MethodReplacement() {  
    @Override  
    protected Object replaceHookedMethod(MethodHookParam methodHookParam) throws Throwable {  
        return "";  
    }  
});

5.4 Hook加固通杀

Class a = classLoader.loadClass("类名")
XposedBridge.hookAllMethods(a,"方法名",new XC_MethodReplacement() {  
    @Override  
    protected Object replaceHookedMethod(MethodHookParam methodHookParam) throws Throwable {  
        return "";  
    }  
});

5.5 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

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

实例变量

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);  
    }  
});

5.6 Hook构造函数

Noarg无参构造

XposedHelpers.findAndHookConstructor("com.tcgg.demo.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

XposedHelpers.findAndHookConstructor("com.tcgg.demo.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);
    }
});

5.7 Hook multiDex方法(多dex)

XposedHelpers.findAndHookMethod(Application.class, "attach", Context.class, new XC_MethodHook() {  
    @Override  
    protected void afterHookedMethod(MethodHookParam param) throws Throwable {  
        ClassLoader cl= ((Context)param.args[0]).getClassLoader();  
        Class<?> hookclass=null;  
        try {  
            hookclass=cl.loadClass("类名");  
        }catch (Exception e){  
            Log.e("demo","未找到类",e);  
            return;        
        }  
        XposedHelpers.findAndHookMethod(hookclass, "方法名", new XC_MethodHook() {  
            @Override  
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {  
            }        
        });  
    }  
});

5.8 主动调用方法

静态方法

Class clazz = XposedHelpers.findClass("类名",lpparam.classLoader);
XposedHelpers.callStaticMethod(clazz,"方法名",参数(非必须));

实例方法

Class clazz = XposedHelpers.findClass("类名",lpparam.classLoader);
XposedHelpers.callMethod(clazz.newInstance(),"方法名",参数(非必须));

5.9 Hook内部类

XposedHelpers.findAndHookMethod("com.tcgg.demo.Demo$InnerClass", lpparam.classLoader, "innerFunc",String.class,  new XC_MethodHook() {  
    @Override  
    protected void beforeHookedMethod(MethodHookParam param) throws Throwable {  
        super.beforeHookedMethod(param);  

    }  
});

5.10 利用Java自带的反射

Class clazz = XposedHelpers.findClass("com.tcgg.demo.Demo", lpparam.classLoader);
XposedHelpers.findAndHookMethod("com.tcgg.demo.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.tcgg.demo.Demo",false,lpparam.classLoader);  
        Method demomethod = democlass.getDeclaredMethod("refl");  
        demomethod.setAccessible(true);  
        demomethod.invoke(clazz.newInstance());  
    }  
});

5.11 遍历所有类下所有方法

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.tcgg.demo")){  
            Method[] mds = clazz.getDeclaredMethods();  
            for(int i =0;i<mds.length;i++){  
                final Method md = mds[i];  
                int mod = mds[i].getModifiers();  
                //去除抽象、native、接口方法  
                if(!Modifier.isAbstract(mod)  
                    && !Modifier.isNative(mod)  
                    &&!Modifier.isAbstract(mod)){  
                    XposedBridge.hookMethod(mds[i], new XC_MethodHook() {  
                        @Override  
                        protected void beforeHookedMethod(MethodHookParam param) throws Throwable {  
                            super.beforeHookedMethod(param);  
                            Log.d("tcgg",md.toString());  
                        }  
                    });  
                }  

           }  
        }  

    }  
});

6.例子

字符串赋值定位:

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[0].toString());  
                if(param.args[0].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[i];  
        Log.d("zj2595","at " + element.getClassName() + "." + element.getMethodName() + "(" + element.getFileName() + ":" + element.getLineNumber() + ")");  
    }  
}

点击事件监听:

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:

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);  

    }  
});

posted @ 2023-04-25 13:27 小天呜啦啦阅读(926) 评论(0) 收藏举报

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XiaoTian

XposedHook基础

XposedHook基础

0.说明

1.导包

2.配置AndroidManifest.xml

3.创建Hook入口类

4.配置Hook入口点

5.常用Hook

5.1 Hook普通方法

5.2 Hook复杂&自定义参数

5.3 Hook替换函数

5.4 Hook加固通杀

5.5 Hook变量

5.6 Hook构造函数

5.7 Hook multiDex方法(多dex)

5.8 主动调用方法

5.9 Hook内部类

5.10 利用Java自带的反射

5.11 遍历所有类下所有方法

6.例子

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