Skip to content
SecArsenal
Educational and ethical use only. Only test systems you own or are explicitly authorized to test. Full disclaimer.

Walrus

Access control card cloning devices in the field

rf
Official docs ↗

Platforms: Android · License: GPL-3.0 · Last verified September 7, 2026

Walrus is an Android app for contactless card cloning devices such as the Proxmark3 and Chameleon Mini. Using a simple interface in the style of Google Pay, access control cards can be read into a wallet to be written or emulated later.

Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.

Getting started

Install from the Kali NetHunter App Store (store.nethunter.com) or NetHunter's own app repository on an Android device.