This script is an attempt at compiling split APKs decompiled using apktool into a single base.apk which contains all of the necessary resources, with APKTOOL_DUMMY_ids resolved to actual resource names.
Installation
I'm using python3.8, you may try any version of python3 if it supports necessary packages.
git clone https://github.com/DieHertz/split-apks-merger.git
cd split-apks-merger
python3 -m pip install -r requirements.txt
Usage
A bash script called pull.sh is provided to pull split APK files from your device and unpack them, e.g.:
./pull.sh com.example.helloandroid
Then invoke merge_split_apks.py in a directory which contains unpacked base and split_config.* directories coming out of apktool
You still need to go into base/AndroidManifest.xml and take care of splitsRequired, as well as extractNativeLibraries in some cases.