Is there a way to get the source code from an APK file? [closed]
The hard drive on my laptop just crashed and I lost all the source code for an app that I have been working on for the past two months. All I have is the APK file that is stored in my email from when I sent it to a friend.
Is there any way to extract my source code from this APK file?
Android
- asked 9 years ago
- B Butts
2Answer
Procedure for decoding .apk files, step-by-step method:
Step 1:
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Make a new folder and copy over the .apk file that you want to decode.
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Now rename the extension of this .apk file to .zip (e.g. rename from filename.apk to filename.zip) and save it. Now you can access the classes.dex files, etc. At this stage you are able to see drawables but not xml and java files, so continue.
Step 2:
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Now extract this .zip file in the same folder (or NEW FOLDER).
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Download dex2jar and extract it to the same folder (or NEW FOLDER).
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Move the classes.dex file into the dex2jar folder.
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Now open command prompt and change directory to that folder (or NEW FOLDER). Then write
d2j-dex2jar classes.dex(for mac terminal or ubuntu write./d2j-dex2jar.sh classes.dex) and press enter. You now have the classes.dex.dex2jar file in the same folder. -
Download java decompiler, double click on jd-gui, click on open file, and open classes.dex.dex2jar file from that folder: now you get class files.
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Save all of these class files (In jd-gui, click File -> Save All Sources) by src name. At this stage you get the java source but the .xml files are still unreadable, so continue.
Step 3:
Now open another new folder
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Put in the .apk file which you want to decode
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Download the latest version of apktool AND apktool install window (both can be downloaded from the same link) and place them in the same folder
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Download framework-res.apk and put it in the same folder (Not all apk file need this file, but it doesn't hurt)
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Open a command window
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Navigate to the root directory of APKtool and type the following command:
apktool if framework-res.apk -
apktool d myApp.apk(where myApp.apk denotes the filename that you want to decode)
now you get a file folder in that folder and can easily read the apk's xml files.
Step 4:
It's not any step just copy contents of both folder(in this case both new folder)to the single one
and enjoy the source code...
- answered 8 years ago
- Gul Hafiz
These two articles describe how to combine the use of apktool and dex2jar to take an APK file and create an Eclipse project that can build and run it.
http://blog.inyourbits.com/2012/11/extending-existing-android-applications.html
http://blog.inyourbits.com/2012/12/extending-existing-android-applications.html
Basically you:
- Use apktool to get the resource files out of the apk
- Use dex2jar to get a jar file that contains the classes in a format that Eclipse will like.
- Create an Eclipse project point it at the resource files and the new jar file
- Open the jar file with a zip utility and delete the existing resources
- Open the jar file with JDGui to view the source code
- Take whatever source code you need from JDGui, stick it in a class inside Eclipse and modify it
- Delete that class from the jar file (so you don't have the same class defined multiple times)
- Run it.
- answered 8 years ago
- Sunny Solu
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