[HN Gopher] Fissure: The RF and Reverse Engineering Framework fo...
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Fissure: The RF and Reverse Engineering Framework for Everyone
 
Author : 04rob
Score  : 149 points
Date   : 2022-08-28 14:43 UTC (8 hours ago)
 
web link (github.com)
w3m dump (github.com)
 
| 04rob wrote:
| Video overview: https://www.youtube.com/watch?v=AGHbxXXmnms
 
  | tjfl wrote:
  | The demo starts [here](https://youtu.be/AGHbxXXmnms?t=1208).
 
| DethNinja wrote:
| Is there any list of supported hardware?
 
  | thatBilly wrote:
  | USRP X310, USRP B210, HackRF, RTL2832U, 802.11x Adapter, USRP
  | B205mini, LineSDR and bladeRF
 
| jjeaff wrote:
| This is really cool. And it has such a great readme with
| screenshots and everything.
| 
| One thing I can't figure out from a cursory reading is what type
| of RF hardware would be needed to use this?
| 
| I was just thinking about finding some software like this is
| because I have lost one of the keyless entry key fobs for our car
| and I was thinking if I could record and replay the signal from
| the car, I might be able to narrow down the fob location.
| 
| I suspect it is in the house somewhere. But we have a 1 year old
| who loves to pick things up and insert them into any slot or box
| he can find.
 
  | H8crilA wrote:
  | Basic receive-only SDR is for example the famous RTL-SDR, which
  | you can get for ~$50 with a dipole antenna. It's a USB dongle,
  | and it will get you to surprisingly many interesting places
  | despite the low price tag.
  | 
  | In order to transmit you need some slightly better hardware,
  | such as the HackRF. Replaying a signal with a HackRF is really
  | easy. Note that technically you're not allowed to transmit
  | without a license, whereas reception is generally lawful, with
  | very few exceptions (looking at your legal scar tissue, UK).
  | The author of HackRF published a nice, though not yet
  | completed, tutorial series on YouTube.
  | 
  | There's a lot of activity in the spectrum, if you like to
  | tinker with things then definitely get an SDR, some of the best
  | entertainment value per dollar for a hacker :)
 
| 5436436347 wrote:
| How new is this project? It was really surprising to see
| something published in 2022 that still attempts to offer Python2
| support, and all the baggage that will carry.
 
| yomkippur wrote:
| ELI5? what can a user do potentially with this framework? detect
| drones?
| 
| edit: wow i just saw the lecture video and this seems like a tool
| that lets you detect/analyze radio frequencies emitted from
| almost any device (?) and lets you emulate the packets (?) or
| wave patterns to manipulate the data it sends out?
| 
| this seems like a really powerful tool. I wonder if you can open
| car doors with this. Also wouldn't this mean that this tool could
| become illegal as a result?
 
  | galangalalgol wrote:
  | Is software that can open car doors illegal? Why?
  | 
  | Also, opening car doors isn't as simple as repeating a signal
  | you captured(in general)
  | 
  | That said, capturing the car's question when you press the
  | button on the door, amplifying it in the direction of the
  | nearby fob, and then capturing and amplifying the fob's
  | response would work for some systems.
 
    | yomkippur wrote:
    | It's sad that I have to even spell out for you the
    | consequences of people being able to open any car's doors and
    | how the law and security apparatus will react to such news.
 
      | galangalalgol wrote:
      | I should have clarified. If one of the many things this
      | framework gets used for is building systems for car theives
      | that shouldn't make an entire framework illegal. I
      | understand a software product whose overwhelmingly
      | predominant use is to break the law will have trouble in
      | many jurisdictions. But using the framework as a white hat
      | to find vulnerabilities with a POC should always be legal.
      | (or grey, grey is kind of the new white given how
      | unresponsive people are to fixing things)
 
    | larusso wrote:
    | > Also, opening car doors isn't as simple as repeating a
    | signal you captured(in general)
    | 
    | There are a lot of reports (I'm from Germany) from car brands
    | selling cars in 2022 which can be opened easily by
    | repeating/relaying the keyfob signal. Newer systems which
    | also check the signal delay mitigate this. [1] the German
    | ADAC (German Automobile Club) did a test with 500 cars. I was
    | happy to learn that my new car is save from the simple repeat
    | attack. [1] https://www.adac.de/rund-ums-
    | fahrzeug/ausstattung-technik-zu...
 
      | galangalalgol wrote:
      | Older systems that don't let the car interrogate the fob
      | mitigate it as well as long as you have mutiple encryption
      | keys. Looking at you vw.
 
      | H8crilA wrote:
      | I am to lazy to dig it up and link the PDF, but there was a
      | whitepaper about the Volkswagen keyfobs. In terms of
      | modulation it's unsurprisingly simple, on-off keying,
      | nothing wrong with that. In terms of data transmitted they
      | have several encrypted protocols/versions, but they all
      | suffer from the same implementation problem: there is only
      | one encryption key used for the entire global fleet of
      | cars. Imagine making something as brutally broken as that
      | :D
 
  | H8crilA wrote:
  | Your "edit:" portion just describes an SDR, a software-defined
  | radio. They're pretty common these days actually.
  | 
  | This tool is an advanced front-end for such hardware, kinda
  | like Wireshark is an advanced front-end for a networking
  | controller. It does look pretty cool.
 
| drmpeg wrote:
| I see they've included my high resolution spectrum painter (which
| I also call "Stupid OFDM Tricks" in homage to Letterman).
| 
| https://www.youtube.com/watch?v=saac0ZtTeX4
| 
| https://github.com/drmpeg/gr-paint
 
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