Kali NetHunter is a free and open-source Mobile Penetration Testing Platform for Android Devices (based on Kali Linux) developed by Offensive Security, the creator of the popular Kali Linux distribution.
It is designed for various devices and includes support for hacking wireless networks, web applications, and mobile devices.Kali NetHunter | Kali Linux Documentation
Kali NetHunter is available for un-rooted devices (NetHunter Rootless), for rooted devices that have a custom recovery (NetHunter Lite), and for rooted devices with custom recovery for which a NetHunter specific kernel is available (NetHunter).