Awesome

apksigner

A lightweight APK signing tool that can be run on Android devices.

It is available as a package in Termux which can be installed with pkg install apksigner.

Usage

Run as apksigner [-p password] keystore input-apk output-apk. This will use the specified keystore (or creating one if necessary) to create a signed and zipaligned output file.

License

Apache License, Version 2.0. Based on zip-signer by Ken Ellinwood.