12/3/2023 0 Comments Case clicker hack 201The simple, less-interesting vulnerability in fixed code systems is the clear fact that their key space is extremely limited. See The OpenSesame Attack section below for the new attack. Garages with rolling code technology (often called "Intellicode", "Security+", ""hopping codes", etc) are much more secure than fixed-pin garages but are susceptible to other attacks. Note, this will not open garages using rolling codes. Additional links and resources included at the end. This tool builds off of the shoulders of giants, including the original opensesame by Michael Ossmann, IM-ME code & by Travis Goodspeed, IM-ME LCD reverse engineering by Dave, and effective ideas from Mike Ryan. OpenSesame uses the Radica Girltech IM-ME texting toy from Mattel, as it sports all the equipment we need to pull off the attack - an effective TI CC1110 sub-GHz RF chip, an LCD display, keyboard, backlight, and more. This means most garages will take only seconds to open. OpenSesame exploits not only the limited key space of most fixed pin wireless garages and gates, but employs a new attack I've discovered reducing the time it takes to open any garage by over 95%. If you are an expert in RF and microcontrollers, you could fix it, but then you wouldn't need my help in the first place, would you. It almost works, but just not quite, and is released to educate. Suggested vendors: current products from LiftMaster and Genie.Ĭriminals: The code I've released is bricked to prevent you from abusing it. These are not foolproof from attack, but do prevent the OpenSesame attack along with traditional brute forcing attacks. Prevention: If you are using a gate or garage which uses "fixed codes", to prevent this type of attack, ensure you upgrade to a system which clearly states that it's using rolling codes, hopping codes, Security+ or Intellicode. Follow me on Twitter or join my mailing list to hear about future projects and research.īy demonstration and full details available in the Update to attack rolling codes: I've demonstrated a new tool, RollJam, which additionally attacks rolling codes of garages and vehicles, presented here at DEFCON 23. OpenSesame is a device that can wirelessly open virtually any fixed-code garage door in seconds, exploiting a new attack I've discovered on wireless fixed-pin devices. Samy Kamkar - OpenSesame: hacking garages in seconds OpenSesame
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