Android逆向-Magisk

2023-10-15

字数统计: 697字 | 阅读时长≈ 3分

Android逆向-Magisk

编译环境搭建

Building and Development | Magisk (topjohnwu.github.io)

Magisk如何针对性隐藏Root避免被检测 - 知乎 (zhihu.com)

topjohnwu/Magisk: The Magic Mask for Android (github.com)

系统环境：

Kali Linux虚拟机r0env

git clone --recurse-submodules https://github.com/topjohnwu/Magisk.git

// 下载Android Studio for Linux，解压缩
// ln -s ~/Documents/android-studio/bin/studio.sh /usr/bin/

vim ~/.bashrc
export ANDROID_STUDIO=/root/Documents/android-studio/
export ANDROID_SDK_ROOT=/root/Android/Sdk/	// Project Structure里面找到的
source ~/.bashrc

// 自动下载与安装Android NDK（因为和上次Frida的NDK版本不一样，所以又要下一个）
./build.py ndk // 总是下不下来ondk，报错
// 自己下载：https://github.com/topjohnwu/ondk/releases/download/r26.1/ondk-r26.1-linux.tar.xz
// 然后简单patch一下build.py，让他在install ndk里面直接调用我下载好的.tar.xz包

// 然后尝试
./build.py all
// 直接编译Magisk

// 然后报错，因此手动执行
./gradlew app:assembleDebug -PconfigPath=/root/Documents/Magisk/config.prop
// 还是报错，打开Android Studio设置好HTTP Proxy（在Project多报错几次似乎会自动弹出来的那个玩意）

编译的时候报错了：

┌──(rootðr0env)-[~/Documents/Magisk]
└─# ./gradlew app:assembleDebug -PconfigPath=/root/Documents/Magisk/config.prop
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true
> Task :app:shared:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:shared:compileDebugJavaWithJavac'.
> Could not resolve all files for configuration ':app:shared:androidJdkImage'.
   > Failed to transform core-for-system-modules.jar to match attributes {artifactType=_internal_android_jdk_image, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}.
      > Execution failed for JdkImageTransform: /root/Android/Sdk/platforms/android-34/core-for-system-modules.jar.
         > jlink executable /usr/lib/jvm/java-17-openjdk-amd64/bin/jlink does not exist.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 9s
28 actionable tasks: 1 executed, 27 up-to-date

java - How to install JDK 11 under Ubuntu? - Stack Overflow

Error building android export templates with JDK 17 · Issue #56991 · godotengine/godot (github.com)

java - How do I tell Gradle to use specific JDK version? - Stack Overflow

Android: 工具使用备忘 - 皮斯卡略夫 - 博客园 (cnblogs.com)

下面的尝试失败了：
1
2
apt-get install openjdk-11-jdk
ln -sfn /usr/lib/jvm/java-11-openjdk-amd64/ /usr/lib/jvm/default-java
根据提示，就是说不能用版本最新的17，而是要用11或者8。这里直接一键安装11。

然后看/usr/lib/jvm/，文件夹java-11-openjdk-amd64更新了，多了很多工具，多了jlink。

然后修改Magisk文件夹下的gradle.properties，添加：
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org.gradle.java.home=/usr/lib/jvm/default-java