0x01前言

之前學習了Xposed如何實現不重新打包APP的條件下，實現函數的Hook，在使用過程中，除了方法的hook，比如我要實現某些函數額調用，不同類中的函數和Native方法的調用。

0x02 測試環境

1.待測試的APP，這里寫了一個測試APP，Mainactivity實現界面，定義兩個函數：

public String test1() Public String test2(String str)

2.新建一個Class為test，并定義兩個函數 ，和mainactivity一樣，test1()和test2(String str),

3.新建一個testNdk的class，實現native方法，并定義兩個函數，

public native String teststr(); public native String mytest(String str);

一個帶參數和一個沒有參數。

0x03 Xposed 實現方法的調用

這里我們hook mainactivity的btntest方法，

final Class <?> test = XposedHelpers.findClass("com.debug.xposed.xposedtest.test", lpparam.classLoader);final Class <?> testndk = XposedHelpers.findClass("com.debug.xposed.xposedtest.testndk", lpparam.classLoader);findAndHookMethod("com.debug.xposed.xposedtest.MainActivity", lpparam.classLoader, "testbtn", View.class, new XC_MethodHook() {@Overrideprotected void beforeHookedMethod(MethodHookParam param) throws Throwable {XposedBridge.log("Hook之前");//getSign}@Override//函數執行后protected void afterHookedMethod(MethodHookParam param) throws Throwable {XposedBridge.log("Hook之后");try {String str1 = (String) XposedHelpers.callMethod(param.thisObject, "test1");Log.i("debug","mainactivity test1 return "+str1);String str2 = (String) XposedHelpers.callMethod(param.thisObject, "test2","xposed input main test2");Log.i("debug","mainactivity test2 return "+str2);Object testObject = test.newInstance();String str3 = (String) XposedHelpers.callMethod(testObject,"test1");Log.i("debug","test test1 return= "+str3);String str4 = (String) XposedHelpers.callMethod(testObject, "test2", "hello ", "txmg");Log.i("debug","test test2 return= "+str4);Object testndkobject = testndk.newInstance();Method myteststr = XposedHelpers.findMethodBestMatch(testndkobject.getClass(), "teststr");String str5 = (String) myteststr.invoke(testndkobject);Log.i("debug","ndk teststr return= "+str5);Method mytest = XposedHelpers.findMethodBestMatch(testndkobject.getClass(), "mytest"," gggg");String str6 = (String) mytest.invoke(testndkobject,"mytest input test ");Log.i("debug","ndk mytest return= "+str6);}catch (Exception e){e.printStackTrace();}

Log輸出：

原文地址：?https://www.ijiza.cn/2016/02/14/xposed%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E7%B1%BB%E4%B8%AD%E5%87%BD%E6%95%B0%E7%9A%84%E8%B0%83%E7%94%A8/

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