usbvalve-build - Hardware-based BadUSB detection tool.

项目说明

USBVal Build)

This repository serves as a detailed documentation of my personal build of USBValve, an incredible open-source hardware project originally designed and created by Cesare Pizzi (cecio). Building this device has been a fantastic way to learn more about hardware security, the inner workings of USB protocols, and the practical application of microcontrollers in defensi.

What is USBValve?

USBValve is a defensi tool designed to inspect and analyze untrusted USB devices in a safe, isolated en. It essentially acts as a "hardware firewall," an air-gapped bridge, between a potentially dangerous USB device and your computer system.

When you plug an unknown or untrusted USB device into the USBValve, it does not passively pass the data through to the connected host computer. Instead, the microcontroller aggressively interrogates the connected device. It analyzes its fundamental descriptors, interfaces, information, and behavior. This rigorous inspection process allows you to determine if a device is malicious before you expose your actual machine to potential harm.

For example, USBValve is highly effective at detecting a "BadUSB" or a "Rubber Ducky." These malicious tools are physically designed to look exactly like standard, harmless USB flash drives. However, once connected, they secretly register as human interface devices (HIDs), such as a keyboard. They then rapidly type pre-programmed, malicious payloads, executing commands faster than a human could react, potentially compromising the system, installing malware, or stealing credentials. USBVal this deception instantly.

It displays all this critical information—identifying the exact device class and capabilities—on the OLED screen, giving you a clear, immediate look at what the device *really* is, ensuring you don't inad deploy an attack against yourself.

Original Repository & Source Code:

🔧 Hardware Bill of Materials

I built this device following the exact specifications and schematic provided in the original project. Here is a detailed breakdown of the components I sourced for the assembly:

| Component | Details & Notes |
| :---- | :---- |
| Microcontroller | Raspberry Pi Pico |
| Display | 0.96" OLED I2C Display |
| USB Type-A Female | ser |

📸 Build Gallery

⚡ Firmware & Installation

I utilized the official pre-compiled firmware provided by the original creator, which makes the setup process incredibly straightforward. To replicate this build and flash your own Raspberry Pi Pico, follow these steps:

1. Download Firmware: Go to the original USBVal page and download the latest .uf2 file. Ensure you are downloading the correct for your specific Pico model.
2. Enter Bootloader Mode: Hold down the BOOTSEL button on your Raspberry Pi Pico. While keeping the button held down, plug the Pico into your computer via a high-quality micro-USB cable.
3. Flash the Device: The Pico will mount on your computer as a standard mass storage device named RPI-RP2. Simply drag and drop the downloaded .uf2 file onto this drive. The device will automatically reboot, flash the code, and the OLED screen should light up with the USBValve logo, indicating a successful installation.

⚠️ Disclaimer

This project is constructed strictly for educational and defensi. The device is a diagnostic tool designed to help users inspect USB devices to ensure they are safe to use in controlled en.

I am not the original author of the code or the hardware design; this repository serves only as a documentation of my personal assembly of the tool to demonstrate my soldering, hardware assembly skills, and understanding of USB security concepts. Please use this tool responsibly and only on devices you own or ha to test.

📜 Credits

All credit for the original concept, schematic, and software engineering goes to Cesare Pizzi.

* Original Project: cecio/USBvalve

项目信息

开发语言：未知

Star 数：2

技术要点

该项目属于防护思路方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕Hardware-based BadUSB detection tool.展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。