Toyota, Hyundai and Kia keys are replayable
Toyota, Hyundai and Kia keys are replayable

Wired this week, citing a study conducted by the University of Leuven in Belgium and the University of Birmingham, reported that millions of mechanical keys equipped with radio chips supporting Toyota, Hyundai and Kia radios were defective, and execution vehicles could easily be stolen with encryption, hackers could clone keys and drive cars in seconds .

Earlier this week, researchers discovered new vulnerabilities in the anti-theft coding system, which is a wireless device in a car that can call the FOB key from a short distance to unlock it. The car and engine activation is running normally.

Researchers have identified problems related to implementing the Texas Instruments (TST) TI (DST80) coding system by Toyota, Hyundai, and Kia. Consequently, the application of an encryption method enables Proxmark RFID to locate it relatively inexpensively near FOB devices for car rigging. I think he has real keys.

Using this method, an attacker would have to approach the device (FOB) and scan it using a (Proxmark RFID) device to obtain sufficient information to use the same device (Proxmark RFID) to identify and clone the encryption key. Deactivating the anti-theft device to prevent the car. The actual key to drive without driving nearby.

After disabling the anti-theft system, the only remaining obstacle is the keyhole of the engine. However, this requires the use of old car theft technology, for example B. Cable or key change with a screwdriver.

The attack was possible because the encryption key used in the car was easily identifiable by reverse engineering of the firmware, and in the event of a tweet, the encryption key depended on the serial number transmitted by the signal. FOB, while Kia and Hyundai Motors use only 24-bit random numbers for protection instead of 80-bit functions for the DST80 system.

The affected models are Toyota Camry, Toyota Corolla, Toyota Rav4, Kia Optima, Kia Soul, Kia Rio, Hyundai I10, Hyundai I20 and Hyundai I40. Below is a complete list of researchers' results. The researchers found that these problems included a defect in the movement of the encoder:



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