fengbin8606/angeapk — reverse-engineered prompt

Build me a small educational proof of concept that shows how an Android APK can be hidden inside a PNG image for a local security demo. I want to start with a normal PNG and a harmless sample APK, run a simple Python command, and get an output image that still opens like a regular picture but also contains the APK data.

Please include a simple Android wrapper app or demo screen that can prove the hidden data is there, without doing anything sketchy. It should only extract or display information when I tap a button, and it should not install anything silently, bypass permissions, call the internet, or run in the background.

Make the project easy to run from a fresh checkout, with clear setup steps, sample inputs, and a short README explaining what the demo is showing. Keep it focused on the BlackHat style concept of hiding APK data in images, using safe toy files only.