From ESP32 Hobby Boards to Pocket Security Labs
An ESP32 security toolkit is a compact, WiFi-enabled device built on ESP32 hardware that runs open source penetration testing tools, providing features such as USB rubber ducky DIY payloads, network analysis, and wireless attack simulations in an affordable, pocket-sized form factor that supports experimentation, education, and authorized security research. EvilDuck S3 and Evil-M5Project both follow this idea, turning maker-friendly boards into capable cybersecurity hacking tools. EvilDuck S3 focuses on refined USB HID automation in a tiny stick-style form, while Evil-M5Project turns the M5Stack Cardputer and related devices into multi-purpose training platforms. Together, they show how modern ESP32-S3 chips can handle roles once reserved for pricey, proprietary hardware. For students, hobbyists, and penetration testers with permission to test, these projects lower the barrier to building a personal, portable lab.
EvilDuck S3: USB Rubber Ducky DIY on ESP32-S3
EvilDuck S3 is the third revision of an open-source USB rubber ducky DIY project that evolved from an ATmega32U4-based board into a single-chip ESP32-S3 design. Earlier versions combined a USB HID microcontroller with a separate WiFi chip, but the latest revision uses the ESP32-S3 to handle both USB keyboard emulation and wireless control on one chip, freeing PCB space for a MicroSD slot and extra components. The board adds an addressable WS2812 RGB LED, a voltage regulator, and a reliable SD card interface for storing payload scripts. By acting as a programmable keyboard that can be controlled over WiFi, EvilDuck S3 offers a flexible ESP32 security toolkit ideal for automating repeatable desktop tests, demonstrating input injection risks, and experimenting with payload delivery techniques in controlled environments.
Evil-M5Project: Turning M5Stack into a Full Cyber Range
Evil-M5Project transforms the M5Stack Cardputer and other supported M5Stack devices into a comprehensive pocket-sized cybersecurity education toolkit running on ESP32 hardware. According to its creator, the Cardputer firmware alone packs “87+ menu features” and “38,000+ lines of code,” supported by “74 wiki documentation pages” and “60+ multilingual portal templates.” Built as an open source penetration testing and teaching platform, it focuses on WiFi security assessment, network hijacking demonstrations, WPA handshake capture and analysis, Bluetooth and RF threat detection, and more. Many operations run directly on the device without a laptop, making it practical for lab exercises and field demos. With support for multiple M5Stack models and 17 slave firmware variants for distributed operations, Evil-M5Project is well suited for classrooms, workshops, and red-team style training where portability and depth of tooling both matter.
Comparing Capabilities, Use Cases, and Learning Value
Side by side, EvilDuck S3 and Evil-M5Project cover different slices of the same ESP32 security toolkit spectrum. EvilDuck S3 excels as a focused USB HID attack and automation device, ideal when you need a compact, purpose-built stick that behaves like a keyboard while pulling payloads from an SD card and accepting WiFi control. Evil-M5Project, by contrast, functions as an all-in-one lab: it scans, attacks, logs, and visualizes WiFi activity, demonstrates network-layer weaknesses, and performs on-device password auditing and packet capture. For educators, Evil-M5Project’s menus and documentation provide guided learning paths, while EvilDuck S3 shines in exercises around endpoint security, input validation, and user awareness. Many practitioners will find them complementary: EvilDuck S3 for host-side testing and Evil-M5Project for wireless, network, and protocol-focused labs.
Open Source, Community Customization, and Responsible Use
Both projects show how open source penetration testing tools can democratize cybersecurity. EvilDuck S3 publishes its hardware revisions and firmware so builders can fix small issues—such as the SD card detect pin wiring noted by the creator—and adapt the design for their own USB rubber ducky DIY payloads or workflows. Evil-M5Project is openly developed, community-driven, and aimed squarely at education, with explicit emphasis on authorized use in controlled lab environments. The breadth of its wiki and supported devices encourages others to extend features, contribute templates, and write new training scenarios. Together, these projects highlight a shift from closed, expensive gear to accessible, modifiable ESP32-based platforms. Used responsibly and with proper authorization, they offer a powerful way to learn how attacks work, test defenses, and teach practical security skills to the next generation.
