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exposed's Introduction

简介

exposed 致力于为App提供 Xposed 运行环境。基本思路是劫持APP进程启动的入口,加载 Xposed 插件以及 hook框架 epic

exposed本质上是一个 Xposed 与 APP进程 之间的兼容层,它给Xposed模块提供运行环境(如插件加载、hook环境等)。

目前使用最广泛的实现是 VirtualXposed,它使用 VirtualApp 来运行APP并提供进程入口劫持。但是,exposed 本身并不依赖双开宿主;甚至不需要双开。

另外,基于APP加固的思路,甚至直接修改APK,或者通过magisk注入进程的方式,都可以实现 Xposed。

目前有以下几种实现方式:

  • VirtualXposed :基于双开实现,通过 VirtualApp 运行目标APK,在进程启动入口加载 exposed。优势:免安装,无篡改签名问题。劣势:性能 & 稳定性受限于双开,无法与系统完全交互。
  • 太极:基于修改APK实现。在 Application 类的入口织入 exposed 入口代码,从而加载 exposed。优势:可以与系统完全交互,性能好。劣势:签名改变,虽有独特技术可以绕过所有检测,但是依然有风险。部分APP调用其他会检测签名,使得所有APP必须被“太极化”,风险极高。
  • 太极·Magisk:通过 Magisk 修改系统文件,在 Zygote 进程启动的时候执行 exposed 入口代码,从而加载 exposed。优势:完全体,不存在上述所有问题。劣势:需要解锁Bootloader和刷机。

使用

Exposed 是一个library,是提供给开发者使用的;如果你需要在非ROOT环境下运行Xposed,请移步项目 VAExposed

如果需要在APP进程中中提供Xposed运行环境,在进程启动的入口,执行如下调用即可:

ExposedBridge.initOnce(context, applicationInfo, appClassLoader);

同时,为了加载Xposed模块,需要在进程启动的时候执行模块加载:

ExposedBridge.loadModule(moduleApk, apkOdexDir, moduleLibDir, applicationInfo, appClassLoader);

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