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README
Apache-2.0

ratel

项目介绍

在非root环境下,使用xposed,且不依赖于其他虚拟化容器环境。使得xposed有二次分包的能力。

原理

ratel本身是一个嵌入式沙盒,或者是一个加壳机,他可以给指定一个apk加壳,但是这个壳的代码很特殊,壳并不是做代码保护的,而是由壳实现AOP。 ratel在运行的时候,首先导入xposed环境,完成xposed模块加载,然后将控制权交给原始的app。由于原始app在运行之前,就被xposed框架给挟持了,所以原始app的行为将受到xposed模块的控制

依赖

xposed需要比较麻烦的安装环境,ratel的目标只是实现进程内的hook,所以ratel使用exposed替代xposed框架。底层使用阿里的dexposed(4.x一下)或者epic(5.x以上),非常感谢epic作者

仓库地址

github: https://github.com/virjar/ratel

码云: https://gitee.com/virjar/ratel

限制

  1. 由于进程内hook,无root权限,无法影响系统功能,也就是说修改系统app,或者Android framework的xposed模块无法生效
  2. 不支持资源hook,受限于exposed
  3. xposed模块加载入口,xposed加载一个模块的起始点是handleBindApplication,这个时机在apk运行的前期,但是由于ratel能够接触到最早的代码运行时机是application.attachBaseContext,所以如果你的xposed模块挂载时机在handleBindApplication到application.attachBaseContext,那么模块可能不会生效,因为retal call xposedModule的时候,事情已经发生了
  4. 无法支持多个xposed模块同时生效,这个你可以尝试改着支持多个
  5. xposed 模块没有独立进程能力了,也就是说对于那些有独立配置页面的xposed模块,独立配置页面将被隐藏。
  6. 部分机型和系统版本不支持,比如5.x的Android系统,不支持64位模式,受限于epic作者大大
  7. 尽量不要再魔改过的rom上面运行
  8. 可能和原生的xposed环境冲突,建议不要再装有xposed环境的手机中运行ratel

子项目

apktool: 从apktool项目迁移过来,用来实现apk的重新打包

crackmodule:一个xposed模块demo,实现对demoapp的挟持

demoapp:一个app的demo,其中方法com.virjar.ratel.demoapp.MainActivity.text将会被crackmodule挟持

ratel-driver:驱动项目,作为打包产生的apk的入口,负责组装和加载其他模块

ratel-tool:一个java项目,作为ratel打包的工具入口,可以build为一个独立jar包,提供打包服务

工具构建教程

  1. ./gradlew ratel-driver:assembleDebug 构建driver项目
  2. 将driver产生的apk,放置到ratel-tool的resource目录下面,并重命名为:ratel-driver.apk (cp ratel-driver/build/outpus/apk/debug/ratel-driver-debug.apk ratel-tool/src/main/resource/ratel-driver.apk)
  3. 构建driver的独立jar包 ./gradlew ratel-tool:assemble 的到输出的工具类jar文件:ratel-tool/build/libs/ratel-tool-1.0.0.jar

工具使用教程

得到ratel jar包,执行java -jar 命令,传入两个apk文件名称即可 如:java -jar ratel-tool/build/libs/ratel-tool-1.0.0.jar test/crackmodule-debug.apk test/demoapp-debug.apk 命令执行完成之后,将会产生一个新的apk文件,xxx_ratel_unsigned.apk,该文件即为合并好的apk

对apk签名 jarsigner -verbose -keystore ~/Downloads/dwjmantou.keystore com.virjar.ratel.demoapp_1.0_1_ratel_unsigned.apk dwjmantou.keystore 具体签名方法,参考apktool apk签名教程

签名后,在手机中安装输出的apk

致谢: https://github.com/android-hacker/exposed https://github.com/iBotPeaches/Apktool

log

dengweijiadeMacBook-Pro:ratel virjar$ java -jar ratel-tool/build/libs/ratel-tool-1.0.0.jar test/crackmodule-debug.apk test/demoapp-debug.apk
clean working directory:/Users/virjar/git/ratel/ratel_work_dir
release ratel container apk ,into :/Users/virjar/git/ratel/ratel_work_dir/ratel-driver.apk
对目标apk解包...
十月 06, 2018 10:19:24 下午 brut.androlib.ApkDecoder decode
信息: Using Apktool @version@ on demoapp-debug.apk
十月 06, 2018 10:19:24 下午 brut.androlib.res.AndrolibResources loadMainPkg
信息: Loading resource table...
十月 06, 2018 10:19:25 下午 brut.androlib.res.AndrolibResources decodeManifestWithResources
信息: Decoding AndroidManifest.xml with resources...
十月 06, 2018 10:19:25 下午 brut.androlib.res.AndrolibResources loadFrameworkPkg
信息: Loading resource table from file: /Users/virjar/Library/apktool/framework/1.apk
十月 06, 2018 10:19:28 下午 brut.androlib.res.AndrolibResources adjustPackageManifest
信息: Regular manifest package...
十月 06, 2018 10:19:28 下午 brut.androlib.res.AndrolibResources decode
信息: Decoding file-resources...
十月 06, 2018 10:19:30 下午 brut.androlib.res.AndrolibResources decode
信息: Decoding values */* XMLs...
十月 06, 2018 10:19:30 下午 brut.androlib.Androlib decodeSourcesRaw
信息: Copying raw classes.dex file...
十月 06, 2018 10:19:30 下午 brut.androlib.Androlib decodeRawFiles
信息: Copying assets and libs...
十月 06, 2018 10:19:30 下午 brut.androlib.Androlib decodeUnknownFiles
信息: Copying unknown files...
十月 06, 2018 10:19:30 下午 brut.androlib.Androlib writeOriginalFiles
信息: Copying original files...
移出原apk中无用文件
嵌入扩展apk文件
植入容器代码...
修正AndroidManifest.xml...
重新打包apk...
十月 06, 2018 10:19:31 下午 brut.androlib.Androlib build
信息: Using Apktool @version@
十月 06, 2018 10:19:31 下午 brut.androlib.Androlib buildSourcesRaw
信息: Copying ratel_work_dir/ratel_origin_apk classes.dex file...
十月 06, 2018 10:19:31 下午 brut.androlib.Androlib buildResourcesFull
信息: Building resources...
十月 06, 2018 10:19:32 下午 brut.androlib.Androlib buildApk
信息: Building apk file...
十月 06, 2018 10:19:33 下午 brut.androlib.Androlib buildUnknownFiles
信息: Copying unknown files/dir...
十月 06, 2018 10:19:34 下午 brut.androlib.Androlib build
信息: Built apk...
清除工作目录..
输出apk路径:/Users/virjar/git/ratel/com.virjar.ratel.demoapp_1.0_1_ratel_unsigned.apk

演示

所有演示相关的二进制文件,都在demo_apks目录下

特别说明:

  1. 不是所有系统都支持,但是应该支持目前市面上绝大多数手机
  2. ratel-tool.jar 的参数,必须是两个apk文件,且其中一个为正常的apk,另一个为xposed模块apk,ratel-tool.jar的工作则是将他们糅成一个apk
  3. 工具是给开发者使用的,最好不要随便拿apk和xposed模块来测试,c端模块会有很多限制功能无法使用,大部分情况应该是插入定制的xposed模块
  4. 遇到问题,可以读一读epic文档 https://github.com/tiann/epic/blob/master/README_cn.md

捐赠

如果你觉得作者辛苦了,可以的话请我喝杯咖啡 alipay

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简介

在非root环境下,使用xposed,且不依赖于其他虚拟化容器环境。使得xposed有二次分包的能力 展开 收起
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