The USB Rubber Ducky burst onto the scene a few years ago, and invented a new attack vector – keystroke injection. The malicious USB device presents itself as a keyboard to the target system, blurting out keystrokes at up to 1000 words per minute. The device is typically used to open a phishing site or otherwise enter commands to exfiltrate data from the victim. Now things have stepped up a notch, with ESPloitV2 – a WiFi-enabled take on the same concept.

Running on the Cactus WHID platform, the device is so named for the ESP12 WiFi microcontroller it employs, along with an Atmega 32u4 for USB HID device emulation. By virtue of its wireless connection, no longer does the aspiring hacker have to rely on pre-cooked routines. Various exploits can be stored in the ESP12’s spacious 4 megabytes of flash, and there’s even the potential to live type your attack if you’re feeling bold.

It goes to show that the trust we implicitly place in foreign USB devices is potentially our future downfall. BadUSB is another great example, and the USB Wrapper is a great way to get a charge if you’re stuck using an untrusted port.

 



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