微信开源工具AndResGuard做Android资源混淆

2023-11-18 19:07:16

前言

在Android开发过程中，为了防止自己的劳动成功被窃取或者受到不发分子的篡改，往往在发布的时候会对代码做混淆，但是混淆只混淆了代码，资源文件却还是赤裸在其他人面前，而且查看资源文件还非常简单，将.apk文件更换成.zip文件几个res文件夹下清楚的看到相关的资源文件，如下图：
微信开源工具AndResGuard做Android资源混淆
为了保护项目的资源文件的可读性，同时也为了减小整个apk包的大小，下面一起来通过微信的开源库AndResGuard进行资源文件的混淆。
了解AndResGuard的原理请戳这里

准备工作

需要准备以下几个文件：
微信开源工具AndResGuard做Android资源混淆
点击下载最新的配置文件，下面对以上文件一一做介绍

jar
AndResGuard-cli-1.1.16.jar下载
签名文件test.jks
可以通过Android studio或者eclipse创建；也可以使用keytool.exe创建，具体操作在android APK反编译及混淆学习总结中有介绍

配置文件config.xml
重要的配置也用中文做了简单的解释，具体配置如下：

<?xml version="1.0" encoding="UTF-8"?>  
<resproguard>  
    <!--defaut property to set  -->  
    <issue id="property">  
        <!--whether use 7zip to repackage the signed apk, you must install the 7z command line version in window -->  
        <!--sudo apt-get install p7zip-full in linux -->  
        <!--and you must write the sign data fist, and i found that if we use linux, we can get a better result -->  
        <seventzip value="false"/>   
        <!--the sign data file name in your apk, default must be META-INF-->  
        <!--generally, you do not need to change it if you dont change the meta file name in your apk-->  
        <metaname value="META-INF"/>  
        <!--if keep root, res/drawable will be kept, it won‘t be changed to such as r/s-->  
        <keeproot value="false"/>  
    </issue>  




    <!--whitelist, some resource id you can not proguard, such as getIdentifier-->  
    <!--isactive, whether to use whitelist, you can set false to close it simply-->  
    <!--这里设置了那些资源不混淆的，如：友盟相关的资源就不能混淆，混淆后将会出现问题-->  
    <issue id="whitelist" isactive="true">  
        <!--you must write the full package name, such as com.tencent.mm.R -->  
        <!--for some reason, we should keep our icon better-->  
        <!--and it support *, ?, such as com.tencent.mm.R.drawable.emoji_*, com.tencent.mm.R.drawable.emoji_?-->  
        <path value="com.lpf.argt.R.drawable.ic_launcher"/>  
        <path value="com.lpf.argt.R.mipmap.ic_launcher"/>  
        <path value="com.lpf.argt.R.string.app_name"/>  

        <path value="com.lpf.argt.R.drawable.icon"/>  
        <path value="com.lpf.argt.R.string.umeng*"/>  
        <path value="com.lpf.argt.R.layout.umeng*"/>  
        <path value="com.lpf.argt.R.drawable.umeng*"/>  
        <path value="com.lpf.argt.R.anim.umeng*"/>  
        <path value="com.lpf.argt.R.color.umeng*"/>  
        <path value="com.lpf.argt.R.style.*UM*"/>  
        <path value="com.lpf.argt.R.style.umeng*"/>  
        <path value="com.lpf.argt.R.id.umeng*"/>  
    </issue>  




    <!--keepmapping, sometimes if we need to support incremental upgrade, we should keep the old mapping-->  
    <!--isactive, whether to use keepmapping, you can set false to close it simply-->  
    <!--if you use -mapping to set keepmapping property in cammand line, these setting will be overlayed-->  
    <!-- <issue id="keepmapping" isactive="false"> -->  
        <!--the old mapping path, in window use \, in linux use /, and the default path is the running location-->  
        <!--<path value="{your_mapping_path}"/> -->  
    <!--</issue> -->  




    <!--compress, if you want to compress the file, the name is relative path, such as resources.arsc, res/drawable-hdpi/welcome.png-->  
    <!--what can you compress? generally, if your resources.arsc less than 1m, you can compress it. and i think compress .png, .jpg is ok-->  
    <!--isactive, whether to use compress, you can set false to close it simply-->  
    <issue id="compress" isactive="false">  
        <!--you must use / separation, and it support *, ?, such as *.png, *.jpg, res/drawable-hdpi/welcome_?.png-->  
        <path value="*.png"/>  
        <path value="*.jpg"/>  
        <path value="*.jpeg"/>  
        <path value="*.gif"/>  
        <path value="resources.arsc"/>  
    </issue>  




    <!--sign, if you want to sign the apk, and if you want to use 7zip, you must fill in the following data-->  
    <!--isactive, whether to use sign, you can set false to close it simply-->  
    <!--if you use -signature to set sign property in cammand line, these setting will be overlayed-->  
    <issue id="sign" isactive="true">  
        <!--the signature file path, in window use \, in linux use /, and the default path is the running location-->  
        <!--这里设置签名文件的路径-->
        <path value="F:/DATA/code/build/test.jks"/>  
        <!--storepass-->  
        <storepass value="123456789"/>  
        <!--keypass-->  
        <keypass value="123456789"/>  
        <!--alias-->  
        <alias value="test"/>  
    </issue>  

</resproguard>

7-zip工具的安装
下载软件，根据引导安装即可
bat文件
新建一个txt文件夹，将如下指令拷贝进去，然后将.txt的后缀更换为.bat
```
Java -jar AndResGuard-cli-1.1.16.jar test.apk -config config.xml -out release -zipalign F:/DATA/code/software/sdk/build-tools/23.0.2/zipalign -7zip "E:/Program Files/7-Zip/7z.exe" -signature F:/DATA/code/build/test.jks 123456789 123456789 test
```
- F:/DATA/code/software/sdk/build-tools/23.0.2/zipalign为SDK自带的工具，具体路径根据自己的实际情况配置
- E:/Program Files/7-Zip/7z.exe为前一步中安装的7-zip的路径
- F:/DATA/code/build/test.jks为签名文件，后面紧跟的是2个密码和alias
test.apk
测试apk，这里的apk为任意apk均可以，签名过的apk必须是使用上面bat中配置的签名文件进行签名的；同时混淆后的apk也是没有问题的