Burglar suspected of using Arduino- Onity hack to rob hotel rooms. Can anyone argue against this being the least- secure hotel room lock on the market? Regular readers will recognize it as an Onity key card lock. A few months back a glaring flaw in the security was exposed that allows these locks to be opened electronically in less than a second. So we are not surprised to hear that a series of hotel room robberies in Houston are suspected to have been performed using this technique. Can anyone argue against this being the least-secure hotel room lock on the market? Regular readers will recognize it as an Onity key card lock. A few months back at the Black Hat Security conference Cody Brocious demonstrated how you can easiy open an Onity hotel room lock, the standard system used in many hotel chains, with an Arduino but it was bulky setup and comletely obvious if anyone saw him pull out a lot of electronics. Here's how you can fit that system in a dry erase marker. In this paper we will discuss the design and inner workings of the Onity HT lock system for hotels. Code for the crypto algorithm is in appendix B of this paper. Lock communications. Communications with the lock take place over a bidirectional single-wire protocol. Below is the complete Arduino sketch. When connected to the lock, it will immediately open the lock. #define CONSERVATIVE int ioPin = 3; #define BUFSIZE 200 unsigned char buf[BUFSIZE]. The image above is from a demonstration video we saw back in October. That hack used an Arduino- compatible chip inside of a dry erase marker as an end- run around the lock’s electronics. It reinforced the warning sound by [Cody Brocious] when he presented the exploit at this year’s Blackhat conference. The barrel jack on the. Burglar suspected of using Arduino-Onity hack to rob hotel rooms. November 29, 2012 by Mike Szczys 52 Comments. Can anyone argue against this being the least-secure hotel room lock on the market? Regular readers will recognize it as an Onity key card lock. A few months back a glaring flaw in the security was exposed that allows these locks to be opened electronically in less than a second. So we. Digital Lock-Picking: This Simple Arduino Hack Opens Millions of Hotel Keycard Doors. It used to be that you only had to worry about maids rummaging through your belongings in your locked hotel room. Onity Door Unlocker Arduino Mini Pro Setup. On one of our engagements, we figured an Onity Hotel door. Running the original sketch off 5v (as opposed to 3.3v) did not seem to have any adverse effects on the Onity lock itself or on the opening procedure. After connecting a 9V battery to the Arduino Mini pro (to RAW), and adding a small pushbutton, we came up with a small. В outside. В of the door lock doubles as a 1- wire communications port and that is how an attacker can gain access. Investigators can find no other means of entry for these thefts. We applaud one of the victims in this story. At the end of the article she is asked if the information about the Onity flaw should have been kept secret. She said that if there’s a vulnerability that’s not being fixed people have a right to know about it. Bravo [Janet Wolf]![Thanks Andrew].
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