[55-5] Virtual Physical Penetration Test - Part 5: Access Controlled

After successfully translating the binary Wiegand data to hex and cloning the credential you make your way further into the facility only to meet another roadblock.

[@PocketWomen]

Finally one I might know. The tool would be the plastic shim. This is a fun series thanks for all the work you have put in. Cheers

[@amihirata]

You got it! Thank you for the kind words, I’m glad people are having fun with it!

[@jaimemunoz5920]

Some kind of shim such as a piece of plastic from a milk jug or a credit card or a flyswatter part. Hopefully I am thinking of the door opening away in the right way.

[@AquaTech225]

This was pretty cool. I dont know a damn thing about badge readers. Wish I did. Still enjoyed the vid

[@aettic]

I guess I would try a thin plastic shim, since I could push and just slip it.

[@williamcornell3599]

A mica shim

[@flywifiguy]

Ok, I've been grappling with this for a few minutes trying to follow. Firstly would it be correct to let the ProxMark software do this for you using the lf hid weigand 0 42 1337 then copying the hex value out of the 26 bit return, as you demonstrated in your video #12?
Secondly, when I use the weigand calculator located at www.ccdesignworks.com/wiegand_calc.htm to convert the facility code 42 and the card number 1337 to hex, I get 2540A73. When I convert that back to binary (it's a perfect 26 bits) and add the 12 bit HID identifier 100000000001 to the front of the string, then convert that back to hex, I get 2006540A73 which is one bit flipped from your result. What am I missing?

[@amihirata]

That's a great question. I took a look and it seems the calculator at the link assigns the wrong parity bit on the end, not your fault at all! The tail end parity bit should be a zero not a one, and that would then give you the right result. I'm not sure why the website is giving you the wrong tail end parity bit.

[@AquaTech225]

Lol completely lost I am

[@Wesrl]

Carolina roller

[@amihirata]

Ah, but the door opens away from you! 😉

[@ctbch]

A piece of plastic