USBSamurai — A Remotely Controlled Malicious USB HID Injecting Cable for less than 10$

TL;DR: The Video is self-explanatory. (Wanna know how to make it? Read the article below.)

All started with this Tweet last April, when I wanted a damn cheap USB implant capable of injecting keystrokes.

It had to be:

• Remotely Controllable

• Fast in Typing

• Tiny as f***k

• Cheaper than a bottle of Vodka

The main idea (for the hardware-side) is to re-use the Logitech’s inexpensive Unifying dongles as implants within USB cables. To give you an idea… this is how much this dongle cost (CU-0007): 7.74 EURO!

What you need to do is DEAD SIMPLE:

• Remove the top black case without breaking the dongle;

• PULL out the PCB & the orange plastic holder [gently hold the metal case with a vice (use gum for projecting it) then with a pair of pliers gently but firmly pull out the stuff];

• Pop-open an USB Cable (I do suggest either [1] or [2]) and solder the Vcc& GND to their related pins on the CU-0007.

• Once everything will be in place, mount back the metal case of the USB male connector.

• Then check if it fits the USB case and glue it with a drop of super-glue.

DONE. Congrats! You just created your First USBsamurai! Now you just need to pair it with @mame82’s LOGITacker v.0.1.3-beta and you are ready to pwn targets! Remember to first unpair all pre-paired devices: with the command munifying unpairall G700 firmware is limited to one paired device per time! For the Software-side, the good @mame82 came to help with his majestic LOGITacker framework! So far it supports 4 different NRF-based boards:

• Nordic nRF52840 Dongle

• MakerDiary MDK Dongle

• MakerDiary MDK

• April Brother nRF52840 Dongle

I personally opted for the 4th one [3] since is the only one with external Antenna (i.e. Longer Range). https://github.com/mame82/LOGITacker#24-april-brother-nrf52840-dongle Just follow LOGITacker’s readme and install the v.0.1.3-beta and install https://github.com/mame82/LOGITacker/releases/download/v0.1.3-beta/logitacker_aprdongle.uf2 I recorder a video to explain how to easily pair USBsamurai with LOGITacker. Enjoy :)

[1] https://aliexpress.com/item/33052091501.html

[2] https://aliexpress.com/item/32771548306.html

[3] https://www.aliexpress.com/item/32975184100.html