cant someone create a device that records the signals that the fob and car transmit and then just replay them back? Think of it like a learning remote for your tv. Same concept.
Slew of Burglaries From Vehicles Using New Tech
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No, vehicle uses rolling code security, your tv remote does not use any security.
how can you know your homemade cage works, or the RFID/ RF/ LF/ UHF/ blocker type devices on amazon/ as seen on tv ads/ etc / work without testing with one of these amplifiers?
wonder where they got the idea about putting the fob in the freezer? ahemsnowdenahem
"We note that the main reason why relay attacks are possible on PKES systems is that, to open and start the car, instead of verifying that the correct key is in its physical proximity, the car verifies if it can communicate with the correct key, assuming that the ability to communicate implies proximity"
the amp can be built for 17 bucks from what i read and speed betweeen points is critical in the attack..
Attack Mitigations:
Store the key fob in a "Faraday cage"
Experiment with removing the battery from the fob.
Some auto systems have a "dead battery fallback" provision which relies only upon passive RFID proximity.
Longer term: RF Distance Bounding
Measure the Challenge/Response round trip time.
300,000,000 meters / second (299,792,458)
300 m/uS or 0.3m/ns or 3.336 ns/meter
1 meter round trip: 6.67ns
Transponder *must* have a response time variability that's small in relation.
nice post.
video cameras could be considered valuable.my solution for now: disable passive.. keep nothing of value in the car. also: video cameras
i meant outside the car, focused on the car.. but not practical in public spots.. this will get reverse engineered quickly. part of it already is.. i have faith.
If the key fob can't be detected by the car there's no threat. Keeping it sheilded is the only real defense. If you unshield it at car to enter exit whatever you are there too.
Not seen amything yet on Hellcats that says what type of interface is used it may be relay risk is minimal, or not.
Not seen amything yet on Hellcats that says what type of interface is used it may be relay risk is minimal, or not.
Don't car still polls for nearby key fob. If one doesn't respond there's nothing to relay, which is why sheilding it (if hellcats are more openly exposed to a relay hack and that's not known, to me anyway) is the best option.
do you keep stuff in the trunk or car often? my car is always empty.. i am one of those guys.. i have nothing in the car.. but someone crawling through it to find that out through the trunk and back seats would piss me off something awful. please let me know what you decide to do and if you disconnect; how you did it.
When you put your fingers under the door handle using the passive system it unlocks the doors. This has nothing to do with the button on the remote.
If your car is locked, including the trunk, if you attempt to open the trunk, minus the key fob in range, will you get in, will it open?
If the key fob is out of range of the car, but is within relay hack range, if the trunk is locked and the fob poll response (from car) is relayed and car detects response, and trunk access is attempted, what do you think will happen then?
Im asking as I may have missunderstood if defeating passive entry also defeats trunk access? Relay hacks only work if the fob can be activated, manually or otherwise like getting polled, get that.
Well better hope fca gets on board using this
MCS3142 - Security- KEELOQ® Encoder Devices
(As of last year not.)
Or adjusts too similar ota.
Or anytime you use your fob, your exposed, unless you know what key sequence to use to clear last authentication key generated amd when.
MCS3142 - Security- KEELOQ® Encoder Devices
(As of last year not.)
Or adjusts too similar ota.
Or anytime you use your fob, your exposed, unless you know what key sequence to use to clear last authentication key generated amd when.
My apologies for bumping this thread, but I wanted to pass along a simple solution. As already stated, disable the passive entry. In addition, using aluminum foil, I created a small pouch, 3x3 inches, in which I store my fob at home. I also created a 5x5 pouch for my spare fobs. I tested the fob's distance from inside my front door to where my HC is parked out on the drive way. Each fob unlocked the doors from 20'. When tested from the same location inside the aluminum-foil pouch, the fobs failed to unlock the doors or remote start the car. With the fob inside the aluminum-foil pouch, I began walking towards the car while repeatedly pressing the unlock button. It was only after I was next to the car and just at the driver's side front tire that the doors finally unlocked.
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Disable Passive. Keys locked down. Works!my solution for now: disable passive.. keep nothing of value in the car. also: video cameras
Bump this thread up again because a friend had his TrackHawk stolen from the dealership. Dropbox. Overnight. No protection on the box.
Did the RFID trick. He didn't have passive entry OFF (PKE Speak).
Gone. Done. Not found.
I turned off PKE a while back. Then started playing with the keyfob protection. (Bag, Farade, Etc.)
It works!
Our vehicles look for the FOB. If the FOB isn't transmitting, there is no signal to grab.
Keep your FOB's protected. Garage or not. Turn OFF PKE. It's simple. Do a search on this.
I unlocked my car with the FOB. Then put it back in the bag. Car wouldn't start. Dash read "Push Button with Key Fob to Start" .
Can not copy what isn't there.... I know there is some other way with mimicking/copying/making a new FOB. Get in my garage first, then I'll worry about that.
Did the RFID trick. He didn't have passive entry OFF (PKE Speak).
Gone. Done. Not found.
I turned off PKE a while back. Then started playing with the keyfob protection. (Bag, Farade, Etc.)
It works!
Our vehicles look for the FOB. If the FOB isn't transmitting, there is no signal to grab.
Keep your FOB's protected. Garage or not. Turn OFF PKE. It's simple. Do a search on this.
I unlocked my car with the FOB. Then put it back in the bag. Car wouldn't start. Dash read "Push Button with Key Fob to Start" .
Can not copy what isn't there.... I know there is some other way with mimicking/copying/making a new FOB. Get in my garage first, then I'll worry about that.
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