Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The final-challenge walkthroughs document Optiboot at 115200 baud and avrdude commands for dumping and writing flash through an Arduino-compatible bootloader.
Badge context
Official PDF by Nathan Taylor covering ATmega1284P, FTDI serial-over-USB, bootloader-preserving flash writes, soft-brick risk, firmware integrity checks, CRC16/XMODEM, and all-nine-challenges completion.
Official PDF by badge challenge author Nathan Taylor covering USB serial, Optiboot, avrdude firmware dumping, Ghidra AVR analysis, stack overwrite, and the Echo Service challenge solve.
Official CyberThreat page for the London 2024 event, 450+ in-person attendees, thousands online, brand-new Secure Impact hackable badges, nine challenges, and links to final-challenge walkthroughs.
Officially linked video walkthrough for CyberThreat 2024 badge challenges one through seven.
Source trail
Primary source for CyberThreat's SANS/NCSC context, London 2024 event recap, in-person and online attendance, Secure Impact hackable badges, nine challenge count, and walkthrough links.
Primary technical source for ATmega1284P processor, FTDI serial converter, ISP versus bootloader programming context, avrdude `-D` write guidance, firmware checksum validation, CRC16/XMODEM repair, and all-nine-challenges completion.
Primary technical source for USB serial behavior, Optiboot at 115200 baud, avrdude flash dump command, Ghidra firmware analysis, and buffer-overflow challenge behavior.