Proxmark3 community

yukihama

Contributor

Registered: 2018-05-13

Posts: 133

?Soved?==[+] Valid lf ID found!

got a low frency  white card with these results:

[=]
X -X -XX -XX -XX -XX -XX -XX -
[=]  Before:  XX XX XX XX XX XX XX XX
[=]  After :  XX XX XX XX XX XX XX XX
[+] GALLAGHER - Region: X FC: XXXX CN: XXXXXX Issue Level: 15
[+]    Printed: XXXXXX
[+]    Raw: ABCDEFGHIJKLMNOPQRESUVW
[+]    CRC: 8C - DE (fail)

[+] Valid ID found!

1:what is this LF system?
2:is this a rolling code system with "Before" and new "After"?
3:why it shows CRC fail?

any help is appreciated ^_^

Last edited by yukihama (2020-11-29 01:50:54)

iceman

Administrator

Registered: 2013-04-25

Posts: 9,507

Website

Re: ?Soved?==[+] Valid lf ID found!

You will need to look at the most excellent work by Matthew Daley https://2019.kiwicon.org/talks/sesame-street.html

iceman

Administrator

Registered: 2013-04-25

Posts: 9,507

Website

Re: ?Soved?==[+] Valid lf ID found!

and if you don't mind, how about sharing a trace to me?

lf read
data save -f lf_gallagher_xxx.pm3

yukihama

Contributor

Registered: 2018-05-13

Posts: 133

Re: ?Soved?==[+] Valid lf ID found!

and if you don't mind, how about sharing a trace to me?

lf read
data save -f lf_gallagher_xxx.pm3

thanks Iceman, you are a genius.

thanks