ARLA/CLUSTER: Extrair informação de PC´s por transmissão de RF através de conexões USB 2

[João Costa > CT1FBF]

USBee stings air-gapped PCs: Wirelessly leak secrets with a file write

*Mordechai Guri*, the Israeli researcher who has something of a knack for
extracting information from air-gapped PCs, has done it again – this time
using radio frequency transmissions from USB 2 connections.

Dubbed *USBee*, the technique turns a computer's USB ports into mini RF
transmitters by modulating the data fed at high speed to plugged-in
devices. By banging out a string of '0' bits to a USB port, the voltage
changes in the interface generate detectable emissions between 240MHz and
480MHz, according to Guri.

Next, by writing sequences of '0' and '1', we're told you can create a
carrier wave from the rapid voltage changes on the interface's data pins.
You can then use binary frequency shift keying (B-FSK) to encode useful
information into the wave.

Guri reckons you can beam 80 bytes per second over the air using this
technique, which is fast enough to send a 4,096-bit crypto key to a nearby
receiver in less than 10 seconds.

You can create a basic carrier wave using this function

Read more at:
http://www.theregister.co.uk/2016/08/31/
usbee_shows_once_again_that_airgapping_doesnt_protect_squat/
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