Android反编译APK修改内容重新打包签名

末蓝、 2022-12-29 11:25 120阅读 0赞

反编译Apk，修改文件重新打包APk。

*  修改资源文件重新打包。

1、使用apktool直接反编译apk

1.1配置apktool环境：

1.1.1打开apktool官网 https://ibotpeaches.github.io/Apktool/install/

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70][]

1.1.2编写执行脚本文件apktool.bat。

内容：

@echo off

if "%PATH\_BASE%" == "" set PATH\_BASE=%PATH%

set PATH=%CD%;%PATH\_BASE%;

chcp 65001 2>nul >nul

java -jar -Duser.language=en -Dfile.encoding=UTF8 "%~dp0\\apktool.jar" %\*

1.1.3 下载apktool.jar包。

再下载最新的地址 https://bitbucket.org/iBotPeaches/apktool/downloads

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 1][]

1.1.4 .配置apktool的运行环境。

把下载的两个文件都copy到自己指定的目录。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 2][]

1.2反编译apk包：

1.2.1 命令行进入到apk包所在的文件夹路径

![2018121414544427.png][]

1.2.2 执行反编译命令 apktool d filename

![20181214145502492.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 3][]

执行完毕生成demo文件夹

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 4][]

1.3修改内容，修改AndroidManifest.xml或者替换res文件。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 5][]

1.4 重新签名打包

1.4.1 回编译apk  apktool b file

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 6][]

执行完毕

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 7][]

生成文件\\demo\\dist\\demo.apk

1.4.2 重新签名

1）签名文件 Autosign.zip(可网上下载)

2）修改文件名demo.apk 改为 update.zip

3）到指定目录执行Sign.bat命令

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 8][]

执行完成

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 9][]

修改签名后文件名字update\_signed.zip 改为 demo\_signed.apk

4）完成，安装启动，完美。

二、使用dex2jar反编译查看java代码

1.  1下载dex2jar和jd-gui

dex2jar: https://github.com/pxb1988/dex2jar

jd-gui: [http://jd.benow.ca/][http_jd.benow.ca]

1.  2 解压得到 dex文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 10][]

1.  3使用dex2jar将从apk中解压得到的dex文件转成jar包

1.3.1 拷贝 dex文件到dex2ja目录 执行 dex2jar classes.dex 与dex2jar classes2.dex

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 11][]

分别生成 classes\_dex2jar.jar于classes2\_dex2jar.jar

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 12][]

1.  4使用jd-gui来查看jar包内容

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 13][]

1.  5 修改内容

新建工程，新建要修改的class文件的对应java文件（包名，文件名保持一致）引入jar包。

修改内容，编译生成class文件。然后直接替换到jar包中。

1.  6把jar包重新转成dex文件。

![20181214150328723.png][]

![20181214150338749.png][]

1.  7将修改完成后的dex文件复制到原来的apk文件中

删掉这个文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMyNjUzNDQ_size_16_color_FFFFFF_t_70 14][]

1.  1.  然后压缩成zip。修改文件后缀为apk。
    2.  重新签名（ 同 一中 1.4.2）

【总结】

一般情况不修改源码只需弄第一大步骤就行，后面的基本不用修改。

apktool d xxx.apk  反编译出文件夹，修改对应文件。apktool b 文件夹名 重新build文件并生成apk，此时在目录下有个dist文件，build后的apk在此目录，若直接安装该apk会提示安装失败，原因是必须签名，签名通过上文的autosign 工具即可。把对应的apk修改文件为update.zip即可签名。签名后修改新生成的zip文件为apk即可。

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[2018121414544427.png]: https://img-blog.csdnimg.cn/2018121414544427.png
[20181214145502492.png]: https://img-blog.csdnimg.cn/20181214145502492.png
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[http_jd.benow.ca]: http://jd.benow.ca/
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[20181214150328723.png]: https://img-blog.csdnimg.cn/20181214150328723.png
[20181214150338749.png]: https://img-blog.csdnimg.cn/20181214150338749.png
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