how to use DEXtoJar

Question

I find the solution to decompile a file dex to jar from this link http://code.google.com/p/dex2jar/downloads/list but i don't understand how to use it.

adding download link : https://sourceforge.net/projects/dex2jar/files/ project is moved. — jeet.chanchawat, Sep 17 '20 at 10:35
to get only symbol information, just drag and drop the .dex file into your android studio — Abhinav Atul, Feb 19 '21 at 16:48

score 89 · Answer 1 · answered Nov 13 '13 at 13:22

89

Follow the below steps to do so_

Rename your APK file(e.g., rename your APK file to .zip Ex- test.apk -> test.zip) & extract resultant zip file.

Copy your .dex file in to dex2jar folder.

Run setclasspath.bat. This should be run because this data is used in the next step.

Go to Windows Command prompt, change the folder path to the path of your dex2jar folder and run the command as follows: d2j-dex2jar.bat classes.dex

enjoy!! Your jar file will be ready in the same folder with name classes_dex2jar.jar.

Hope this helps you and All reading this... :)

answered Nov 13 '13 at 13:22

Rupesh Yadav

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@Rupesh not able to find 'setclasspath.bat' location? – Shirish Herwade Jan 19 '16 at 10:06
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if you don't have `setclasspath.bat` you can just skeep part with it (works for me) – Mike Herasimov Jul 18 '16 at 19:39

score 44 · Answer 2 · edited Jan 25 '17 at 08:20

44

Download dex2jar https://code.google.com/p/dex2jar/downloads/list
Run dex2jar on apk d2j-dex2jar.sh someApk.apk
open jar file in JD GUI http://jd.benow.ca/

Follow this guide: https://code.google.com/p/dex2jar/wiki/UserGuide

--Update 10/11/2016--

Found this ClassyShark from Google's github pretty easy to view code from APK.

https://github.com/google/android-classyshark

// make sure that you downloaded release https://github.com/pxb1988/dex2jar/releases (for the ppl who coldnt find this link in /dex2jar/downloads/list

edited Jan 25 '17 at 08:20

Andrew

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answered May 05 '14 at 20:08

Prakash

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Where do you see this **d2j-dex2jar.sh**? I don't see it anywhere. – IgorGanapolsky Aug 19 '16 at 18:48
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@IgorGanapolsky , download the latest version of dex2jar (link: https://sourceforge.net/projects/dex2jar/) & you'll get both `bat` & `sh` versions of each script. – Touhid Feb 15 '17 at 18:20
I still can not find the d2j-dex2jar.sh file. İt is really interesting. – Olkunmustafa Feb 25 '18 at 10:33

score 43 · Answer 3 · answered Jul 14 '11 at 04:32

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Step 1 extract the contents of dex2jar.*.*.zip file 
Step 2 copy your .dex file to the extracted directory
Step 3 execute dex2jar.bat <.dex filename> on windows, or ./dex2jar.sh <.dex filename> on linux

answered Jul 14 '11 at 04:32

Nitin Nizhawan

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I'm using ubuntu and while running the 3rd command i'm getting an error: bash: ./dex2jar.sh:Permission denied , what's wrong happening here – Khay Jan 13 '14 at 07:22
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you will need to specify read,write and execute permission, possibly you can write chmod 777 "directory name" – Kirtikumar A. Aug 27 '14 at 05:34
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@kendrelaxman i m also not getting 3rd point can u tell me how to do that ? – nida Jan 15 '15 at 04:36
@kendrelaxman regarding the 3rd step what did you do? I'm using Windows. how should I execute it? cmd? – Ari Jun 30 '16 at 16:51
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There is no such thing as **dex2jar.bat** – IgorGanapolsky Nov 02 '16 at 17:19
@IgorGanapolsky, make sure you do not clone, but download the release: https://github.com/pxb1988/dex2jar/releases – Daan Mar 11 '19 at 09:42

score 28 · Answer 4 · answered Sep 23 '16 at 06:34

Simple way

Rename your test.apk => test.zip
Extract test.zip then open that folder
Download dex2jax & Extract
Copy classes.dex file from test folder
Past to dex2jar Extracted folder
if use windows press Alt & D keys then type cmd press Enter(open to cmd)
run the command d2j-dex2jar.bat classes.dex
Download JD-GUI
Move classes-dex2jar.jar file to JD-GUI
Everything Done..

score 5 · Answer 5 · answered Apr 03 '19 at 03:16

old link
- the link http://code.google.com/p/dex2jar/downloads/list is old, it will redirect to https://github.com/pxb1988/dex2jar
dex2jar syntax
- in https://github.com/pxb1988/dex2jar, you can see your expected usage/syntax:
- sh d2j-dex2jar.sh -f ~/path/to/apk_to_decompile.apk
- can convert from apk to jar.
want dex to jar
- if you have dex file (eg. using FDex2 dump from a running android apk/app), then you can:
- sh d2j-dex2jar.sh -f ~/path/to/dex_to_decompile.dex
- can got the converted jar from dex.
- example:
- /xxx/dex-tools-2.1-SNAPSHOT/d2j-dex2jar.sh -f com.huili.readingclub8825612.dex dex2jar com.huili.readingclub8825612.dex -> ./com.huili.readingclub8825612-dex2jar.jar
want jar to java src
- if you continue want convert from jar to java sourcecode, then you, have multiple choice:
  - using Jadx directly convert dex to java sourcecode
  - first convert dex to jar, second convertjartojava sourcecode`

Note

how to got `d2j-dex2jar.sh`?

download from dex2jar github release, got dex-tools-2.1-SNAPSHOT.zip, unzip then got

you expected Linux's d2j-dex2jar.sh
- and Windows's d2j-dex2jar.bat
- and related other tools
- d2j-jar2dex.sh
- d2j-dex2smali.sh
- d2j-baksmali.sh
- d2j-apk-sign.sh
- etc.

what's the full process of convert `dex` to `java sourcecode` ?

you can refer my (crifan)'s full answer in another post: android - decompiling DEX into Java sourcecode - Stack Overflow

or refer my full tutorial (but written in Chinese): 安卓应用的安全和破解

score 4 · Answer 6 · answered Sep 19 '14 at 07:15

4

If anyone is still looking for an easy way to decompile an APK (with resource decompiling), have a look at the tools I have created: https://github.com/dirkvranckaert/AndroidDecompiler

Just checkout the project locally and run the script as documented and you'll get all the resources and sources decompiled.

answered Sep 19 '14 at 07:15

dirkvranckaert

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Great, this actually leverages dex2jar plus a few other tools. – Marcelo Mason Sep 20 '15 at 20:38

score 4 · Answer 7 · answered Oct 07 '15 at 06:54

4

You can decompile your .apk files and download online.

http://www.javadecompilers.com/

answered Oct 07 '15 at 06:54

Burhan ARAS

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This worked like a charm! Was even able to go straight from apk to source. Thanks for the share! – mattLummus Jun 13 '16 at 17:21

score 3 · Answer 8 · answered Sep 26 '16 at 06:17

3

Download latest dex2jar from here -> dex2jar
Run this command on linux -> sh d2j-dex2jar.sh classes.dex
Download java decompiler from here - > JD-GUI
Drag and drop the classes-dex2jar.jar file to JD-GUI

answered Sep 26 '16 at 06:17

Parinda Rajapaksha

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Where did you find **d2j-dex2jar.sh**? – IgorGanapolsky Nov 02 '16 at 17:21
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@IgorGanapolsky: It will be inside the directory extracted from the zip of dex2jar – ND27 Mar 09 '17 at 03:55
I couldn't find d2j-dex2jar.sh file as well after extracted zip. – Olkunmustafa Feb 25 '18 at 10:34
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@MustafaOlkun Download dex2jar-2.0.zip from above link. It is inside the folder. I just checked it. – Parinda Rajapaksha Feb 27 '18 at 04:17
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@ParindaRajapaksha Thank you for comment. I can just find! – Olkunmustafa Feb 27 '18 at 07:02

score 2 · Answer 9 · answered Nov 05 '16 at 14:22

2

If you're looking for the version for windows get it from source forge: https://sourceforge.net/projects/dex2jar/

It has the d2j-dex2jar.bat file you need

answered Nov 05 '16 at 14:22

Tommy

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In this case, please post this as a comment instead of an answer if you think its helpful to give a hint towards answering the original question. Answers are for complete solutions to the original question only and not to share your own experience. – Bobby Nov 05 '16 at 14:40

score 1 · Answer 10 · answered Mar 09 '17 at 03:54

Download Dex2jar and Extract it.
Go to Download path ./d2j-dex2jar.sh /path-to-your/someApk.apk if .sh is not compilable, update the permission: chmod a+x d2j-dex2jar.sh.
It will generate .jar file.
Now use the jar with JD-GUI to decompile it

score 0 · Answer 11 · answered May 10 '17 at 18:41

0

After you extract the classes.dex file, just drag and drop it to d2j-dex2jar

answered May 10 '17 at 18:41

ByBora

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score 0 · Answer 12 · answered Dec 08 '20 at 14:35

Can be used as follow:

Download dex2jar here and extract it.
Download Java decompiler here (If you want to investigate .class file)
Get you release .apk file and change its extension with .zip
Extract .zip and find the classes.dex and classes2.dex
Paste these files into dex2jar folder where .bat file exist of dex2jar (normally names as d2j-dex2jar)
From dex2jar folder, open cmd [Shift+right click to see option to open cmd/power shell]
Type the command in cmd: d2j-dex2jar release.apk
You will get the .class file, open this file into Java Decompiler.

score -1 · Answer 13 · answered Mar 02 '18 at 07:04

-1

The below url is doing same as above answers. Instead of downloading some jar files and doing much activities, you can try to decompile by:

http://apk-deguard.com/

answered Mar 02 '18 at 07:04

Sarojini2064130

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how to use DEXtoJar

13 Answers13

Note

how to got `d2j-dex2jar.sh`?

what's the full process of convert `dex` to `java sourcecode` ?

Linked

how to use DEXtoJar

13 Answers13

Note

how to got d2j-dex2jar.sh?

what's the full process of convert dex to java sourcecode ?

Linked

how to got `d2j-dex2jar.sh`?

what's the full process of convert `dex` to `java sourcecode` ?