Android xposed Hook 初探01

参考资料

https://blog.csdn.net/qq_42229759/article/details/103066214

https://blog.csdn.net/xingkong_hdc/article/details/82531505?depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1&utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1

事前准备：

xposed.apk

XposedBridgeApi-82.jar

环境目录：

test001/app/mylib 目录下存放的是XposedBridgeApi-82.jar 相关的包

test001/app/src/main/assets/xposed_init  文件中的内容是实现hook的包 + 类; 例如

com.example.test001.HookTest

在build.gradle 中需要将xpose的包引入

dependencies {

    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'

    // 引入mylib中的jar
    compileOnly fileTree(dir: 'mylib', include: ['*.jar'])  

}

/test001/app/src/main/java/HookTest 中是 Hook实现的方法

package com.example.test001;// hook 导入包

import java.lang.reflect.Method;
import java.util.Map;

import  de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
import de.robv.android.xposed.XC_MethodHook;

public class HookTest implements IXposedHookLoadPackage{


    String signurl_classname = "com.chanjet.library.utils.FormatUrlUtils";
    String md5password_classname = "com.chanjet.library.utils.EncryptUtils";
    @Override
    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {

        if (!loadPackageParam.packageName.equals("com.foundao.bjnews")) {
            return;
        }


        XposedBridge.log("xposed 测试");

//         Class clazz = loadPackageParam.classLoader.loadClass(signurl_classname);
//        XposedHelpers.findAndHookMethod(clazz, "formatUrlMap", new XC_MethodHook() {

//        打印类中的方法名
        Class <?> a_class = XposedHelpers.findClass(signurl_classname, loadPackageParam.classLoader);
        for(Method method : a_class.getDeclaredMethods()){
            XposedBridge.log("方法名："+ method.getName());
        }

//        signurl  signurl_classname 为 由包到类的名称  signUrl 为方法名称 Map.class 是方法中参数的类型
        XposedHelpers.findAndHookMethod(signurl_classname, loadPackageParam.classLoader, "signUrl", Map.class, new XC_MethodHook() {
            @Override
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                super.afterHookedMethod(param);
                XposedBridge.log("signUrl params:  " + param.args[0].toString());
            }
        });


//      formaturlmap
        XposedHelpers.findAndHookMethod(signurl_classname, loadPackageParam.classLoader, "formatUrlMap", Map.class, new XC_MethodHook() {
            @Override
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                super.afterHookedMethod(param);
//                获取结果
                Object f_result = param.getResult();
                XposedBridge.log("formatUrlMap params:  " + param.args[0].toString());
                XposedBridge.log("formatUrlMap result:  " + f_result.toString());
            }
        });


        Class <?> b_class = XposedHelpers.findClass(md5password_classname, loadPackageParam.classLoader);
        for(Method method : b_class.getDeclaredMethods()){
            XposedBridge.log("方法名: " + method.getName());
        }

//        hook多个参数的函数, 注 boolean 类型的参数 用boolean，不能使用Boolean
        XposedHelpers.findAndHookMethod(md5password_classname, loadPackageParam.classLoader, "md5Password", String.class, boolean.class, new XC_MethodHook() {
            @Override
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                super.afterHookedMethod(param);
                XposedBridge.log("md5password param1:" + param.args[0].toString());
                Object result = param.getResult();
                XposedBridge.log("md5password result：" + result.toString());

            }
        });

    }
}

 

hook 函数：

 

上述hook功能 将参数和结果卸载了xposed 的日志中了。

在手机上安装好virtualxposed以后， 可以在xposed-install 中的日志进行查看。