Apk Into Readable Source Code

Aaron Lin

December 15, 2021

2 min read

• Java - should be able to run java -version in your terminal
• Bytecode Viewer

1 Download the jar for Bytecode Viewer located at this link: page

2 Use a site like apkpure.com to download the apk you want to look into For this guide, we'll be this apk

3 Open Bytecode Viewer using the following command

bash
1java -jar jda-1.2.0-with-deps

4 You should see the application open up, with an option to drag a .jar file into the top left window

5 Drag in the apk downloaded in step 2

6 You should see the source code after the application has processed the apk

7 Looking through we can see several things about this application

a. The usage of Firebase
b. Kotlin based application
c. Source code under com.eastmeeteast

8 Looking at one .class file, we can see the implementation. Example shown below is for com.eastmeeteast.api.servicemodule.CommunitiesModule.class

9 You can change which disassembler/decompiler you use to view .class files under View > Pane 1 OR Pane 2 OR Pane 3 As an example, I set pane 3 to be bytecode

10 Hit the Refresh button under Workspace window and you should see the pane changed to whatever you wanted to view the code in