4G GPS Tracker Reverse Engineering - Cell Modem Interactions
30,172
2024-06-18ใซๅ
ฑๆ
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My name is Matt Brown and I'm an Hardware Security Researcher and Bug Bounty Hunter. This channel is a place where I share my knowledge and experience finding vulnerabilities in IoT systems.
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ใณใกใณใ (21)
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AT commands were invented by Hayes in the 80's. They became the industry standard for sending commands to modems.
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Found your channel recently. I don't know much about hardware hacking but love what I've seen so far! Very informative and entertaining.
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Many of these cell modems have an "application processor" where you can run simple applications without the need for an external microcontroller. I doubt they would populate the GPS that's not connected to anything. It probably feeds the NMEA into a UART on the modem and they have installed a simple application to handle it.
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Some of Simcom modems have the ability to be programmed. This module can be one of them that you can write your own code on it. Because the board has gps antenna and gps module which is too much extra cust for manufacturer, I believe it is programmed to get GPS data from L76 gps module and send it over network to tracking Server. You can test it using different SIM CARD
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Absolutely love the content. Commenting and upvoting for the algorithm
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You have a gift for IOT content! Always entertaining!
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introduce me to so many new topics with each video really love the content
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Absolutely appreciate the consistent content!
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Very good job on figuring out how it works, interesting that there are simcard providers with these plans. For very very low latency IotT projects it's great.
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We don't deserve you, keep up the good work! Awesome content
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Super interesting video! Thanks for explaining it in such a practical manner
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Oh look I see you in West Tennessee. Love your content.
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love the content thanks from Egypt
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absolutely love the content, the only criticism is possibly writing a script. regardless, great job
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Fantastic as usual!!!
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thanks jimbo. love ur vids
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Love your channel and videos :) upVote
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AT commands (called AYE TEE commands, not "at" commands) are a historical legacy from the Hayes modem days and have spread to all manner of modem and even non-modem devices over the years
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Matt have shown in 1st and 2nd video his abilities to not just understand the hardware but also the software intop of it, and also some OSINT skill. Totally a hacker
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Thing is - you can use GPS external device with such modem, since some of them allow pluggin-in additional 'apps', including interfacing external modules
