This is a small project about an RF module for an Arduino. This module can transmit at 433 MHz, which can be used to jam or disable a car key. This project is for educational and informational purposes only. In some countries, it is illegal to block a signal.

A roll jam is a type of jamming attack that targets wireless communication devices, such as those that use radio frequency (RF) signals to transmit and receive data. It works by exploiting the vulnerability of some wireless devices that use a "rolling code" algorithm to prevent replay attacks. In a rolling code system, the transmitter and the receiver use a synchronized algorithm to generate and exchange a new code for each transmission. The code is derived from a secret key and a counter, and it changes each time a new transmission is made. This makes it difficult for an attacker to capture and replay a code, as the same code will not work for the next transmission. However, a roll jam attack can disrupt this process by interfering with the transmission of the first code sent by the transmitter. The attacker uses a jamming device to transmit a strong signal on the same frequency as the original transmission, causing the receiver to miss the code. The attacker then quickly transmits a new code to the receiver, which the receiver accepts as valid. The attacker can then capture the first code and use it later to replay the original transmission. The reason this attack works is that the rolling code algorithm assumes that each transmission will be successful, and it does not have a mechanism to detect or recover from failed transmissions. Therefore, if the first transmission is missed, the system assumes that it was a temporary glitch and accepts the next code sent by the attacker. In summary, a roll jam attack works by disrupting the synchronization between the transmitter and the receiver in a rolling code system, and exploiting the vulnerability of the system to replay attacks.

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[Hackers Inside Tamil]
For Contact - ramprasath5539@gmail.com

Sketch diagram - [ Ссылка ]

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