GitHub - RfidResearchGroup/ChameleonUltra: The new generation chameleon based on NRF52840 makes the performance of card emulation more stable. And gave the chameleon the ability to read, write, and decrypt cards. · GitHub
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RfidResearchGroup
ChameleonUltra
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AUTHORS.md
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ChameleonUltra Authorized Distributors
Lyon, France: Lab401
Santa Ana, United States: Hackerwarehouse
Hastings, UK: KSEC
Montreal, Canada: TechSecurityTools
Shenzhen, China: Sneaktechnology
Guangdong, China: MTools Tec
Lazada One, Singapore: Aliexpress by RRG
What is it and how to use ?
Read the available documentation.
Compatible applications
ChameleonUltraGUI
MTools BLE
Mifare Chameleon Tool (iOS only, Beta)
Chameleon Ultra (Sailfish OS only)
Videos
Beware some of the instructions might have changed since recording, check the current documentation when in doubt!
Downloading and compiling the official CLI
Downloading ChameleonUltraGUI
ChameleonUltraGUI features overview
Using ChameleonUltraGUI and the Chameleon Ultra
MTools BLE - How to clone a card with ChameleonUltra
Official channels
Where do you find the community?
RFID Hacking community discord server
Software/chameleon-dev for firmware and clients development discussions
Devices/chameleon-ultra for usage discussions
GameTec_live discord server
Searching for the docs repo? Find it here
About
The new generation chameleon based on NRF52840 makes the performance of card emulation more stable. And gave the chameleon the ability to read, write, and decrypt cards.
Topics
detection
mifare
chameleon
rfid
nfc
simulate
ntag
iso14443a
125khz
ultralight
chameleonultra
Resources
Readme
License
GPL-3.0 license
Contributing
Contributing
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2.6k<br>stars
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72<br>watching
Forks
396<br>forks
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Releases
Release v2.1.0
Latest
Sep 2, 2025
+ 3 releases
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Languages
96.3%
Assembly<br>1.9%
Python<br>1.6%
Makefile<br>0.1%
Linker Script<br>0.1%
CMake<br>0.0%
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