Security
Research
& Tinkering
Hardware hacking, embedded firmware, RFID research, and open-source development. Personal hobbyist site — no professional services offered.
Projects & Interests
RFID Research
Low and high frequency RFID — HF14A sniffing, DESFire emulation, LF protocol porting (AWID, Indala, Gallagher, FDX-B and more) for the ChameleonUltra platform.
ChameleonUltra · nRF52840
Embedded Firmware
nRF52840 firmware development in C — bootloaders, UF2, SWD/JTAG debugging, Black Magic Probe, bricked device recovery, and low-level hardware bring-up.
C · SWD · JTAG
Sailfish OS Apps
Native Qt/QML/Silica apps for Sailfish OS — NFC interaction, packet capture (SailShark), and ChameleonUltra companion app. RPM packaging for OBS/Chum.
Qt · QML · Silica
Hardware Reverse Engineering
PCB-level work, SPI flash dumps, root access via bootloader tricks, and firmware extraction. Recent work includes CarPlay adapter RE on Allwinner V851S3.
FEL · UART · SPI
Python Tooling
CLI tools and protocol libraries — ChameleonUltra Python client, pn532-python NDEF support, and various scripting utilities for embedded and RFID work.
Open Source
Active contributor to RfidResearchGroup/ChameleonUltra. All personal projects are open source — patches, standalone modes, LF protocol ports, and firmware diagnostics.
github.com/NielDK
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