1. download tools
    1. [[apktool]]
    2. [[dex2jar]]
    3. [[java-decompiler-gui]]
  2. download apk
    1. eg: com.baidu.tieba_mini_123205.apk
  3. decompile
    1. apktool d com.baidu.tieba_mini_123205.apk
    2. mv com.baidu.tieba_mini_123205.apk com.baidu.tieba_mini_123205.zip
    3. unzip com.baidu.tieba_mini_123205.zip got classes.dex file
    4. mv classes.dex dex2jar-you-version-dir/ and d2j-dex2jar.sh classes.dex
    5. use [[java-decompiler-gui]] open classes-dex2jar.jar

Quick Check

  1. Is at least Java 1.8 installed?
  2. Does executing java -version on command line / command prompt return 1.8 or greater?
  3. If not, please install Java 8+ and make it the default. (Java 7 will also work at this time)

Installation for Apktool

  • Windows:

    1. Download Windows wrapper script (Right click, Save Link As apktool.bat)
    2. Download apktool-2 (find newest here)
    3. Rename downloaded jar to apktool.jar
    4. Move both files (apktool.jar & apktool.bat) to your Windows directory (Usually C://Windows)
    5. If you do not have access to C://Windows, you may place the two files anywhere then add that directory to your Environment Variables System PATH variable.
    6. Try running apktool via command prompt

  • Linux:

    1. Download Linux wrapper script (Right click, Save Link As apktool)
    2. Download apktool-2 (find newest here)
    3. Rename downloaded jar to apktool.jar
    4. Move both files (apktool.jar & apktool) to /usr/local/bin (root needed)
    5. Make sure both files are executable (chmod +x)
    6. Try running apktool via cli

  • macOS:

    1. Download Mac wrapper script (Right click, Save Link As apktool)
    2. Download apktool-2 (find newest here)
    3. Rename downloaded jar to apktool.jar
    4. Move both files (apktool.jar & apktool) to /usr/local/bin (root needed)
    5. Make sure both files are executable (chmod +x)
    6. Try running apktool via cli

    Or you can install apktool via Homebrew:

    1. Install Homebrew as described in this page
    2. Execute command brew install apktool in terminal (no root needed). The latest version will be installed in /usr/local/Cellar/apktool/[version]/ and linked to /usr/local/bin/apktool.
    3. Try running apktool via cli

Note - Wrapper scripts are not needed, but helpful so you don’t have to type java -jar apktool.jar over and over.

WebSite

Project move to GitHub

_MirrorWikiDownloadsIssues
ghhttps://github.com/pxb1988/dex2jarWikiReleasesIssues
sfhttps://sourceforge.net/p/dex2jaroldoldold
bbhttps://bitbucket.org/pxb1988/dex2jaroldoldold
gchttps://code.google.com/p/dex2jaroldoldold

Tools to work with android .dex and java .class files

  1. dex-reader/writer: Read/write the Dalvik Executable (.dex) file. It has a light weight API similar with ASM.
  2. d2j-dex2jar: Convert .dex file to .class files (zipped as jar)
  3. smali/baksmali: disassemble dex to smali files and assemble dex from smali files. different implementation to smali/baksmali, same syntax, but we support escape in type desc “Lcom/dex2jar\t\u1234;”
  4. other tools: d2j-decrypt-string

Usage

  1. In the root directory run: ./gradlew distZip
  2. cd dex-tools/build/distributions
  3. Unzip the file dex-tools-2.1-SNAPSHOT.zip (file size should be ~5 MB)
  4. Run d2j-dex2jar.sh from the unzipped directory

Example usage:

sh d2j-dex2jar.sh -f ~/path/to/apk_to_decompile.apk

And the output file will be apk_to_decompile-dex2jar.jar.

JD-GUI

JD-GUI, a standalone graphical utility that displays Java sources from CLASS files.

Description

JD-GUI is a standalone graphical utility that displays Java source codes of “.class” files. You can browse the reconstructed source code with the JD-GUI for instant access to methods and fields.

How to build JD-GUI ?

> git clone https://github.com/java-decompiler/jd-gui.git
> cd jd-gui
> ./gradlew build

generate :

  • “build/libs/jd-gui-x.y.z.jar”
  • “build/libs/jd-gui-x.y.z-min.jar”
  • “build/distributions/jd-gui-windows-x.y.z.zip”
  • “build/distributions/jd-gui-osx-x.y.z.tar”
  • “build/distributions/jd-gui-x.y.z.deb”
  • “build/distributions/jd-gui-x.y.z.rpm”

How to launch JD-GUI ?

  • Double-click on “jd-gui-x.y.z.jar”
  • Double-click on “jd-gui.exe” application from Windows
  • Double-click on “JD-GUI” application from Mac OSX
  • Execute “java -jar jd-gui-x.y.z.jar” or “java -classpath jd-gui-x.y.z.jar org.jd.gui.App”

How to use JD-GUI ?

  • Open a file with menu “File > Open File…”
  • Open recent files with menu “File > Recent Files”
  • Drag and drop files from your file explorer

How to extend JD-GUI ?

> ./gradlew idea

generate Idea Intellij project

> ./gradlew eclipse

generate Eclipse project

> java -classpath jd-gui-x.y.z.jar;myextension1.jar;myextension2.jar org.jd.gui.App

launch JD-GUI with your extensions

How to uninstall JD-GUI ?

  • Java: Delete “jd-gui-x.y.z.jar” and “jd-gui.cfg”.
  • Mac OSX: Drag and drop “JD-GUI” application into the trash.
  • Windows: Delete “jd-gui.exe” and “jd-gui.cfg”.

License

Released under the GNU GPL v3.

Donations

Did JD-GUI help you to solve a critical situation? Do you use JD-Eclipse daily? What about making a donation?

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