Edit or modify the aab file
This process will convert the apk into aab file
There is no way to edit or modify the file in aab because all file get encoded with protocol-buffers but we can edit the apk and modify it easily. So this process will convert modify apk into aab file
Windows-Method
Windows-exe
Download APK2AAB
Requirements - Java 8 & add to system variable
Download .Net 6.0 runtime only Download .NET 6.0 (Linux, macOS, and Windows)
Exe file found in APK2AAB\Windows-exe\APK2AAb.exe
Selected apk & out put aab path should not contain any space in directory path
Min-sdk , target sdk , version name & code should be same as your apk have in AndroidManifest.xml
You need to sign the generated aab file with your keystore in order to publish the application in play store
You can use jarsigner for signing aab file
Android-Method-(You don't need a pc if you follow this method)
Android-Tool-APK2AAB
Apk file found in APK2AAB\Android-Tool\APK2AAb.apk
Download the application and install it
Pick the apk and select output path for aab file
Your file generate in output path
You need to sign the generated aab file with your keystore in order to publish the application in play store
You can follow another guide to sign aab on android device
Manual-way
Tools are required
Bundletool.jar Releases · google/bundletool · GitHub
Apktool.jar GitHub - iBotPeaches/Apktool: A tool for reverse engineering Android apk files
Android.jar Get the ANDROID SDK: $ANDROID_SDK/platforms/android-$latestVersion/android.jar
Jave 8 Java Archive Downloads - Java SE 8 | Oracle India
Add to system variable https://www.java.com/en/download/help/path.html
Unzip the apk
Put all tool files in one folder
Open your command prompt in current directory
Decompile the apk through apktool.jar
execute below command in command line
java -jar apktool_2.5.0.jar d test.apk -s -o decompile_apk -f
Compile the resource
Compile the resources using aapt2
aapt2.exe compile --dir decompile_apk\res -o res.zip
After that you will see a res.zip will generate in your current directory
Link the resources
execute below command in command line
aapt2.exe link --proto-format -o base.zip -I android.jar --manifest decompile_apk\AndroidManifest.xml --min-sdk-version $version --target-sdk-version $version --version-code $version --version-name $version -R res.zip --auto-add-overlay
$version should be replace with your apk version for example my apk have min-sdk is 7 , target-sdk is 30 , version-code is 1 , verison-name is 1.0 . So my command will be →
aapt2.exe link --proto-format -o base.zip -I android.jar --manifest decompile_apk\AndroidManifest.xml --min-sdk-version 7 --target-sdk-version 30 --version-code 1 --version-name 1.0 -R res.zip --auto-add-overlay
After that you will see a base.zip will generate in your current directory
Unzip the base.zip
Directory structure:
base/
/AndroidManifest.xml
/res
/resources.pb
Copy the files
Take base folder as your main folder for now !
Create a folder manifest name folder inside base folder and move your base/AndroidManifest.xml to manifest/AndroidManifest.xml
copy whole assets folder from decompile_apk/assets and paste to base/assets
copy lib folder from decompile_apk/lib and paste to base/lib
copy all files inside unknown folder from decompile_apk/unknown and paste to base/root
copy whole kotlin folder from decompile_apk/kotlin and paste to base/root/kotlin
Final directory structure
base/
/assets
/dex
/lib
/manifest
/res
/root
/resources.pb
Create a zip
Open your command prompt in /base directory
we are going to create a zip using cmd or you can use any software like Winrar & 7zip
execute below command in command line
jar cMf base.zip manifest dex res root lib assets resources.pb
It will create base.zip in current directory now copy the base.zip and paste where you put all tool file (.jars , .exe)
Compile aab
Open your command prompt in /tools directory
execute below command in command line
java -jar bundletool.jar build-bundle --modules=base.zip --output=base.aab
base.aab file will generate in current folder
You need to sign the generated aab file with your keystore in order to publish the application in play store
I hope you guys will like it 
Old errors will not come as i changed the whole process of creating AAB file.
New repository APK2AAB
Support
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