Android APK Anti-compilation details (drawings)

This period of time learning Android application development, in the thinking since it is developed in Java should be very good anti-compilation to get the source code bar, Google a bit, it is really simple, the following is my practice process.

In this solemn declaration, the purpose is not to crack people's software, is completely a learning attitude, but it seems that through this way can also go to the Chinese some foreign software.

This article Android anti-compilation tutorial, test environment:

Win7 Ultimate x64

Ubuntu 12.04 x86_x64

Anti-compilation toolkit Download (2012-10-10 update)

One, APK anti-compilation get Java source code

Download the anti-compilation toolkit above, open the dex2jar-0.0.9.9 folder under the Apk2java directory , including the apk decompile to Java source Tools, as well as the Source view tool.

APK Anti-compilation tool Dex2jar, is to convert the Classes.dex in the apk into a jar file

Source View tool Jdgui, is an anti-compilation tool that can directly view the source code of the anti-compiled jar package

Dex2jar and Jdgui The latest version of the download, see Google Code:

Dex2jar (Google Code)

Jdgui (Google code), the latest version please see the official

Specific steps:

First, the apk file suffix to zip and unzip, get the Classes.dex, it is Java file compilation and then through the DX tool packaging, copy the Classes.dex to Dex2jar.bat directory dex2jar-0.0.9.9 folder.

Under command line, navigate to the directory where the Dex2jar.bat is located, run

Dex2jar.bat Classes.dex

Generated

Classes_dex2jar.jar

Then, go to the Jdgui folder double-click jd-gui.exe, open the above generated jar package Classes_dex2jar.jar, you can see the source code, such as:

Helloandroid source code in the anti-compilation before and after the comparison is as follows:

The source code and pictures, XML configuration, language resources and other files of apk decompile Generator

This is especially useful if you have a Chinese software.

The first is to download the above anti-compilation toolkit, where the latest apktool, please go to google code download

Apktool (Google Code)

concrete steps:

Download the anti-compilation toolkit above, open Aapt.exe,apktool.bat,< Span style= "word-wrap:normal; Word-break:normal; line-height:21px; Color: #ff0000; " >apktool.jar 

Note: The Apktool_bk.jar inside is the old version of the backup, preferably with the latest Apktool.jar

Under command line, navigate to the Apktool.bat folder and enter the following command:apktool.bat d-f abc123.apk abc123, such as:

, Apktool.bat command line explanation: Apktool.bat d-f [apk file] [output folder]

The following files are deserialized (Androidmanifest.xml, for example):

To repackage the finished file into an apk, it is easy to enter apktool.bat b abc123(you compiled the folder), the command is as follows:

After packaging the apk file under directory C:\HelloAndroid, two folders were generated:

Build

Dist

wherein, the package generated helloandroid.apk, in the above Dist folder, Ok

Three, graphical anti-compilation apk

Step one or two above describes the command-line anti-compilation apk, which now provides a graphical anti-compilation tool:androidfby

First, download the Anti-compilation toolkit above, open the androidfby directory, double-click the Android Anti-compilation tool,. exe, you can browse to open the apk you want to decompile

Android APK Anti-compilation details (drawings)