分析Android APK-砸壳-Fdex2
2019-10-13 11:13 c#在路上 阅读(2461) 评论(0) 编辑 收藏 举报砸壳的工具千千万,但是FDex2 是最有能耐的,我尝试过各种壳,都是秒砸的。特别说明一下,360的壳,oncreated 方法还是空的,但是其他大部分内容还是有的,反正是可以参考一下的。
安装环境:
1,安卓手机root ,必须root,记住是必须,只支持6.0 或者更低的版本,太高版本也不行。
Root 手机很好找,淘宝买个nexus 手机,然后家里用工具就可以root,为什么不 推荐其他手机,是因为其他手机现在root 特别麻烦,买个旧手机就几百块钱。
2,安装virtual xposed
Xposed 的安装,使用,之前已经讲过了,这里不在赘述。
3,安装Fdex2.
下载地址:链接:https://pan.baidu.com/s/1smxtinr 密码:dk4v
4, 激活FDex2 模块
开始砸壳:
安装app 到xposed, 启动FDex2 ,然后配置需要砸壳的app,
再提示的目录,就可以找到脱壳后的dex 文件。
Fdex2 的程序代码:
package com.ppma.xposed;
import
java.io.File;
importjava.io.FileOutputStream;
importjava.io.IOException;
importjava.io.OutputStream;
importjava.lang.reflect.Method;
import
de.robv.android.xposed.IXposedHookLoadPackage;
importde.robv.android.xposed.XC_MethodHook;
importde.robv.android.xposed.XSharedPreferences;
importde.robv.android.xposed.XposedBridge;
importde.robv.android.xposed.XposedHelpers;
importde.robv.android.xposed.callbacks.XC_LoadPackage;
public
class MainHook implements IXposedHookLoadPackage
{
XSharedPreferences xsp;
Class Dex;
Method Dex_getBytes;
Method getDex;
String packagename;
public void handleLoadPackage(XC_LoadPackage.LoadPackageParam lpparam) throws Throwable
{
xsp =
newXSharedPreferences(
"com.ppma.appinfo",
"User");
xsp.makeWorldReadable();
xsp.reload();
initRefect();
packagename = xsp.getString(
"packagename",
null);
XposedBridge.log(
"设定包名:"+packagename);
if
((!lpparam.packageName.equals(packagename))||packagename==
null) {
XposedBridge.log(
"当前程序包名与设定不一致或者包名为空");
return
;
}
XposedBridge.log(
"目标包名:"+lpparam.packageName);
String str =
"java.lang.ClassLoader";
String str2 =
"loadClass";
XposedHelpers.findAndHookMethod(str, lpparam.classLoader, str2, String.class, Boolean.TYPE,
newXC_MethodHook() {
protected void afterHookedMethod(MethodHookParam param) throws Throwable
{
super
.afterHookedMethod(param);
Class cls = (Class) param.getResult();
if
(cls ==
null) {
//XposedBridge.log("cls == null");
return
;
}
String name = cls.getName();
XposedBridge.log(
"当前类名:"+ name);
byte
[] bArr = (
byte[]) Dex_getBytes.invoke(getDex.invoke(cls,
newObject[
0]),
newObject[
0]);
if
(bArr ==
null) {
XposedBridge.log(
"数据为空:返回");
return
;
}
XposedBridge.log(
"开始写数据");
String dex_path =
"/data/data/"+ packagename +
"/"+ packagename +
"_"+ bArr.length +
".dex";
XposedBridge.log(dex_path);
File file =
newFile(dex_path);
if
(file.exists())
return;
writeByte(bArr, file.getAbsolutePath());
}
} );
}
public void initRefect()
{
try
{
Dex = Class.forName(
"com.android.dex.Dex");
Dex_getBytes = Dex.getDeclaredMethod(
"getBytes",
newClass[
0]);
getDex = Class.forName(
"java.lang.Class").getDeclaredMethod(
"getDex",
newClass[
0]);
}
catch(ClassNotFoundException e) {
e.printStackTrace();
}
catch(NoSuchMethodException e) {
e.printStackTrace();
}
}
public void writeByte(byte[] bArr, String str)
{
try
{
OutputStream outputStream =
newFileOutputStream(str);
outputStream.write(bArr);
outputStream.close();
}
catch(IOException e) {
e.printStackTrace();
XposedBridge.log(
"文件写出失败");
}
}
}