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Episode Markers
  • 05:25
     
    #combination lock animation   
    3 disk combination lock animation
  • 06:28
     
    #schematic and overview   
    Combination lock robot schematic and overview.
  • 07:55
     
    #3D printed coupler   
    3D printed coupler to turn safe dial.
  • 12:05
     
    #Open hardware   
    Open hardware If you can learn from me and I can learn from you we can build off each other's work.
  • 13:05
     
    #Reduce the key set   
    Reduce the key set to 93 from the 100^3 original size
  • 16:32
     
    #Tubular lock opened   
    Tubular lock opened with a bic pen.
  • 17:36
     
    #Measuring the gate widths   
    Measuring the gate widths.
  • 19:24
     
    #Set testing animation   
    Set testing animation to show the combination brute forcing efficiency gain.
  • 23:45
     
    #Impulse response   
    Impulse response -- Sound attack on the dial alignment.
  • 25:20
     
    #Safe Opened   
    Safe Opened

Open Source Safe Cracking Robot DEFCON 25 Nathan Seidle

We've built a $200 open source robot that cracks combination safes using a mixture of measuring techniques and set testing to reduce crack times to under an hour. By using a motor with a high count encoder we can take measurements of the internal bits of a combination safe while it remains closed. These measurements expose one of the digits of the combination needed to open a standard fire safe. Additionally, 'set testing' is a new method we created to decrease the time between combination attempts. With some 3D printing, Arduino, and some strong magnets we can crack almost any fire safe. Come checkout the live cracking demo during the talk!






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