DEF CON
The 2019 DEF CON edition whose Grand Idea Studio crystal badge used NXP silicon, KL27 ARM firmware, NFMI communication, badge-type roles, and a conference-wide interaction game.
Las Vegas, Nevada · United States · 2019
A Grand Idea Studio DEF CON 27 badge built around NXP hardware with a KL27 ARM Cortex-M0+ controller, NFMI communication, quartz or crystal face details, role-specific badge identity, public firmware and schematics, and a conference-wide interaction game.
The AND!XOR DC27 Badge was an unofficial DEF CON 27 badgelife board built around a Rigado BMD-340 / Nordic nRF52840 core with an IS31FL3741 LED matrix, light pipes, glow-in-the-dark capacitive touch, USB-C, FT2232H hardware-hacking bridge, SWD/Tag-Connect programming paths, SAO 1.69bis support, BOTNET mesh behavior, and B.E.N.D.E.R. v2.0 challenges.
Lifecycle
The DOOM SAO log documents an ATSAMD21G18A add-on with ST7789 display, USB-C, serial terminal, bus sniffers, virtual EEPROM identity, and SAO 1.69bis logical integration with DC27 badges.
The walkthrough documents Badge Enabled Non Directive Enigma Routine v2.0 as an embedded text-adventure challenge involving software exploitation, firmware clues, hardware interfaces, crypto, radio, and social steps.
The project page documents HQ19-2333RGBC RGB LEDs, an IS31FL3741 controller, full LED matrix behavior, LED-backlit light pipes, and glow-in-the-dark capacitive-touch presentation.
The project page describes an IoT Bluetooth mesh where badges connected over USB serial could join the conference network and remotely execute badge commands within the badge-game framing.
The DEF CON 27 badge game used near-field magnetic induction badge interactions and role-specific badge types to advance through DEFCON letter levels.
Community firmware work modified the official source to broadcast as multiple badge types and complete other badges through spoofed interactions.
The project page identifies the DC27 badge core as a Rigado BMD-340 module with Nordic nRF52840, paired with power regulation, capacitive touch, SWD/Tag-Connect, USB-C, and SAO 1.69bis hardware surfaces.
The FTDI log documents the badge's FT2232H channel split, with one channel for UART/JTAG/SPI/I2C/bit-banging hardware work and the other for the badge SoC serial terminal.
Grand Idea Studio links post-event research into over-the-air remote code execution against the badge's NFMI subsystem.
Operational history
The catalogue records the game behavior without implying broader real-world botnet capability beyond the AND!XOR badge network described by the project owners.
The catalogue records practical handling behavior that matters for surviving badges and post-event hacking.
User-facing wording documents capability without overstating permission or harmful use.
The public badge page, image archive, and API now point at a real upstream badge photo with source URL, license, attribution, and processing notes preserved.
The record remains source-backed and image-free rather than copying project images, article photos, screenshots, generated art, placeholders, or uncleared media.
The record preserves the badge as a real distributed artifact with documented production yield and rework constraints rather than treating the design as frictionless reference hardware.
The record avoids stronger open-hardware or source-release claims until a complete repository or archive mirror is recovered.
The compendium can show both the official DEF CON 27 badge and the community AND!XOR hardware without merging their lineages.
