DEF CON 25 - Caleb Madrigal - Controlling IoT devices with crafted radio signals

In this talk, we'll be exploring how wireless communication works. We'll capture digital data live (with Software-Defined Radio), and see how the actual bits are transmitted. From here, we'll see how to view, listen to, manipulate, and replay wireless signals. We'll also look at interrupting wireless communication, and finally, we'll even generate new radio waves from scratch (which can be useful for fuzzing and brute force attacks). I'll also be demoing some brand new tools I've written to help in the interception, manipulation, and generation of digital wireless signals with SDR.

[@MrFez-ef1kd]

Six minutes in and I am already in love with this speaker

[@luckyboy20021]

me too

[@weedaq]

yep

[@disk0__]

This is def what I look like trying to explain things to ppl god bless

[@evelynwalker3754]

based defcon guy

[@Kangsteri]

Well explained. Thanks.

[@MrGloverDude]

I love how passionate he is about this stuff.

[@LanceThomasLance]

Thank you so much for sharing your thoughts, experiments, and work. Your way of thinking and interest is so similar to mine. I really learned a lot from this. And it opened up a whole new way for me to visualize and interpret and further my journey down this shared passion. This is priceless, invaluable information. How can i follow your future work? How can I contribute to your work?

[@yosimekupelet]

The talk started out interesting but when he started explaining about waves his explanations where missing their body, he just says "so when you have two wave they kinda naturally convolute and you get this like really big wave but then our brain can..." It's not really an explanation, but a series of statements which seem rather arbitrary since connecting logic between them is missing. I didn't expect him to explains wave physics in 10 minutes and I was skeptical when he said he was gonna, but I did expect a coherent explanation about a subject within wave physics and his speech just gives the impression that he doesn't really know what he is talking about. its not because what he says is inaccurate , but he clearly is unable to explain it.

[@rownadoherty]

Heisenberg's uncertainty principle is not the Nyquist-Shannon sampling theorem. I have no idea what that part is on about.

[@matiasthiele770]

they are not the same buy they are related by the fourier transform

[@rownadoherty]

Well there you go.

[@dreidrei94]

It's always good to revisit fundamentals

[@DDBAA24]

This guy is cool learned something here. Best part is when he gets jammed talking about jamming while demonstrating a jam LOL great attitude and enthusiasm though, and a good sport I would have been slightly pist.

[@JNET_Reloaded]

wheres the links?

[@retepignus2626]

I would like to ask for this slide. thanks

[@Ko6i]

5:20 it's just there in the air... pure m*****ng magic...

[@digitalminecrafter2356]

i honestly though there would be more comments

[@stiffestpud4878]

Death Queen ummmm no kidding huh

[@MultipleObjectSelector]

He sure can toot his own horn

[@RiktigMusik]

”Uuuuuuhhhhhmmmmm”

[@nescius2]

can someone count all his likes? surely over 9k

[@CalebMadrigal]

I'm, like, all about similes/analogies and not-overly-constrained statements.

[@Hex-Mas]

WTF is a Christian Mystic lol