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Reverse engineering a mysterious UDP stream in my hotel (2016)

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Re: Reverse engineering a mysterious UDP stream in my hotel (2016)

#51

Post by paisawalla »

gambiting wrote: post #30
paisawalla wrote: post #25

Earlier quoted context omitted.

Personally, even the remotest possibility of someone broadcasting "evacuate your rooms, there is a fire/active shooter in the building" seems worth spending a few hours protecting against.

....why? No, honestly, why? Would you protect against someone running down the corridor shouting the same thing?

> Would you protect against someone running down the corridor shouting the same thing?

...yes?

Do you think hotels aren't protected, to some extent, against any random person putting on a blazer and announcing an emergency?

Re: Reverse engineering a mysterious UDP stream in my hotel (2016)

#52

Post by paisawalla »

Salgat wrote: post #40
paisawalla wrote: post #25

Earlier quoted context omitted.

Personally, even the remotest possibility of someone broadcasting "evacuate your rooms, there is a fire/active shooter in the building" seems worth spending a few hours protecting against.

It'd be far more trivial to put a wireless speaker in an elevator than it would be to reverse engineer this.

Hotels are reasonably protected to such an attack. There are almost always cameras in the elevator, and the electronics are typically, to some extent, tamper-resistant.

Re: Reverse engineering a mysterious UDP stream in my hotel (2016)

#54

Post by paisawalla »

interstice wrote: post #45
paisawalla wrote: post #25

Earlier quoted context omitted.

Personally, even the remotest possibility of someone broadcasting "evacuate your rooms, there is a fire/active shooter in the building" seems worth spending a few hours protecting against.

This feels like one of those hypothetical attack vectors that has probably never happened. Although I could be wrong!

There are certainly people out there who are motivated to trigger false alarms in hotels: https://profootballtalk.nbcsports.com/2017/01/22/police-appr...

Re: Reverse engineering a mysterious UDP stream in my hotel (2016)

#58

Post by gambiting »

paisawalla wrote: post #51
gambiting wrote: post #30

Earlier quoted context omitted.

....why? No, honestly, why? Would you protect against someone running down the corridor shouting the same thing?

> Would you protect against someone running down the corridor shouting the same thing? ...yes? Do you think hotels aren't protected, to some extent, against any random person putting on a blazer and announcing an emergency?

>>Do you think hotels aren't protected, to some extent

How are they protected against that, exactly? You can literally walk up to any fire emergency button on any wall on any floor, press a button and evacuate the entire hotel, why bother with this UDP streaming nonsense?

Re: Reverse engineering a mysterious UDP stream in my hotel (2016)

#59

Post by moffkalast »

pfoof wrote: post #57

The question is: why? Why distribute the music that way, why not just attach it to a radio directly, or some RPi that will pull the stream, or just have it prerecorded. Despite its simplicity, seems to be overengineered.

Science isn't about why, it's about why not!

Re: Reverse engineering a mysterious UDP stream in my hotel (2016)

#60

Post by marcodiego »

" There was obviously data in this packet and file should know when it sees MPEG Audio data, so I decided to write another Python script to save the packet data with offsets. This way it would save the file test1 skipping 1 byte from the packet, test2 skipping 2 bytes and so on. Here’s the code I used and the result."

Wouldn't binwalk do just that?

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