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I found information about KillerBee which sniffs Zigbee networks. Here is the tutorial: https://www.willhackforsushi.com/presentations/toorcon11-wright.pdf My question, is since Zigbee Xbee can use AES-128 encryption key, and from the few I know, AES is unbreakable, how can a 40$ equipment bypass this? Am I missing something here??

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If you read the slides you linked you can see that there are several methods used to extract the encryption key. If the encryption key is known, AES can be decrypted!

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  • Ok, if the encryption key is known, obviously yes. But if is not known, can an adversary found it and eavesdrop? Ok, I will look it again. – just_learning Nov 23 '19 at 18:01
  • To ask it different, If I store the key on Zigbee by X-CTU, and not send it over the air. Can this be extracted? – just_learning Nov 23 '19 at 18:34
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    If you never send the key over the air it can not be extracted over the air. This is why the PDF you linked also describes how to extract it from a device. – Josef says Reinstate Monica Nov 23 '19 at 19:57
  • So, a solution to prevent the key extraction is what? – just_learning Nov 25 '19 at 10:34
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    @just_learning don't put devices where an adversary can reach them. – Josef says Reinstate Monica Nov 25 '19 at 14:38

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