We are an open-source association pushing the boundaries of embedded security. We build tools, frameworks, CTF challenges, and documentation for the hardware security community. Everything we ship is open, reproducible, and built for legal research and learning.
emon · C
Universal serial monitor built for embedded developers. Watch multiple devices at once, detect events by pattern, stream structured JSON, log everything. Works with ESP32, STM32, Arduino, and any serial device out of the box.
git clone https://github.com/EspilonOrg/emon && cd emon && make
PREFIX=~/.local make installSimSift · Python
SIM OSINT and cellular recon tool for LilyGO T-CALL and T-SIM7070G boards. Pull ICCID, IMSI, operator data, and network metadata straight from hardware.
Official solutions for the ESPILON CTF 2026 edition. 27 challenges across Hardware, IoT, OT, ESP and Misc. 1,472 participants. 1,431 solves.
Modular ESP32 agent firmware for IoT/OT security research. FreeRTOS architecture, ChaCha20 encrypted C2, GPRS connectivity.
C Python ESP32 ESP-IDF FreeRTOS IoT OT Hardware
espilon.net · CTF · Blog · Git · eun0us@espilon.net
For legal use only: research and learning.