What is Dex2jar? Just lookout this nice diagram:
The classes.jar file is a commonly used file in Java development. It is a compressed archive file that contains compiled Java class files, which are the result of compiling Java source code. The classes.jar file is typically generated as part of the build process for a Java project, and it contains all of the compiled classes for the project. We use jd-gui to getting back Java codes from classes.jar file.
First, we have a problem. The original repository only supports classes.dex which is compiled for up until 8 android version. But we there is another version which is fixed by lanchon. So we should download from this new repository. Here is the link:
GitHub - DexPatcher/dex2jar: Unofficial dex2jar builds
Ok. Now let’s download jd-gui tool from this link:
Ok. We have everything we need. Lets start.
Extracting classes.dex.
Convert it to classes.jar via dex2jar
Open it via jd-gui
You can search in JD-GUI with ctr + shift + s.
You can find all child class of a class with this option. To using it you should select Navigation/Hierarchy Type
For example in upper picture we can see all child of EntityProcessingSystem class.
By default JD-GUI index up to 15 nested subdirectory. If an application use more than 15 nested subdirectory then we miss some searches. We can increase this option from Help/Preferences.
