Use your existing contactless card cloning devices with your Android device
New in version 0.2.1
Add Mifare 1k support for Proxmark
Add manual card entry support for HID cards
Add detailed view for HID card data
Allow manual editing of HID card data
Decoding of HID card data
Better device support for Proxmark including RDV4
Walrus enables you to use your existing contactless card cloning devices with your Android device. Using a simple interface, cards can be read into a wallet to be written or emulated later.

Designed for physical security assessors, Walrus has features that will help you in your next red team engagement. Bulk card reading lets you easily capture multiple cards as you move around your target location, while simultaneous device reading lets you use different devices to read multiple card types all at once.

Walrus currently supports the Proxmark3 and the Chameleon Mini, with more device support on the way.

NOTE: Walrus requires the use of one of the supported devices; it cannot read or write cards directly through your Android device.

This app is built and signed by Kali NetHunter.


Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download Store App
  • Version 0.2.1 (4) - Added on 2020-06-21

    This version requires Android ? or newer.

    It is built and signed by the original developer.

    Download APK 2.4 MiB PGP Signature

    • android.permission.ACCESS_FINE_LOCATION
    • android.permission.VIBRATE
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.INTERNET