DCC (Dex-to-C Compiler) is method-based aot compiler that can translate DEX code to C code.
APACHE-2.0 License
DCC (Dex-to-C Compiler) is method-based aot compiler that can translate DEX code to C code.
以下是ubuntu 18.04 环境下的安装配置步骤,如果某些环节已经配置过,如JDK,可跳过.
git clone https://github.com/amimo/dcc.git
cd dcc
pip3 install -r requirements.txt
wget -O tools/apktool.jar https://bitbucket.org/iBotPeaches/apktool/downloads/apktool_2.4.0.jar
export PATH=path/to/ndk:$PATH
sudo apt-get install openjdk-8-jdk
cd dcc
pip3 install -r requirements.txt
首先在app代码合适的位置,如Application的静态代码块或onCreate等,添加加载so库代码,并重新生成apk
try {
System.loadLibrary("nc");
} catch (UnsatisfiedLinkError e) {
e.printStackTrace();
}
dcc支持使用黑白名单来过滤需要编译或禁止编译的函数. 修改filter.txt,使用正则表达式配置需要处理的函数.默认编译Activity.onCreate,和测试demo中的所有函数.
vi filter.txt
在任意包中新增Dex2C注解类
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
public @interface Dex2C {}
然后使用Dex2C标记需要编译的类或者方法
使用如下命令加固your_app.apk
python3 dcc.py your_app.apk -o out.apk
该命令会生成两个文件out.apk和project-source.zip.其中out.apk已经使用testkey签名的加固app,可以直接安装; project-source.zip是个jni工程,里面包含我们编译出来的c代码,解压出来后可以直接使用ndk编译.
vi tests/demo-java/local.properties
vi tests/demo-c/local.properties
cd tests/demo-java
./gradlew assembleDebug
cd dcc
python3 dcc.py tests/demo-java/app/build/outputs/apk/debug/app-debug.apk --source-dir=tests/demo-c/app/src/main/ --no-build
cd tests/demo-c
./gradlew assembleDebug
如果一切顺利,"tests/demo-c/app/build/outputs/apk/debug/app-debug.apk"就是最终生成的apk,安装到手机并运行,看是否会崩溃.