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#1 2014-12-29 10:42:22

Sentinel
Contributor
Registered: 2012-11-26
Posts: 191

Keri systems card (PSK)

Printed                 HEX
K2442*1402024  988581D9E
K2442*1402025  9885C1D8E

K2913-2474401  C882D58AE
K3053-2479751  ECA3C52BE
K3053-2479801  F893C5AAE
K3053-2479851  F8A3C7ABE
K3053-2479901  FC93552AE
K3053-2480001  E883D529E
K3053-2480201  D88A4728E
K3053-2480251  D8BA47A9E

K0584-2621951  D630D68AE
K0584-2622001  E210448BE
K0584-2622051  E220468AE
K0584-2622101  E610C40AE
K0584-2622151  E620C60BE
K0584-2622250  F2201489E
K0584-2622251  F2205488E
K0584-2622301  F610560AE
K0584-2622351  F620D409E
K0584-2622401  E200D609E

Another PSK puzzle  ... smile

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#2 2014-12-29 15:34:00

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: Keri systems card (PSK)

what format #?  one of theirs is almost the same as indala 26 bit.

(Edit..  oh the K series...)

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#3 2014-12-29 16:51:58

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: Keri systems card (PSK)

not enough samples to get all the scrambled bits but here is a start:
number bits starting at 1 from least significant bit to greatest:
(second part of printed number)

printed number bit:
1 = h19
2 = h26
3 = h31
4 = h33
5 = h25
6 = h12
7 = h14
8 = h20
9 = h17
10= h34
11= h21
12= h24
13= h10
14= h9
15= h32 or h28
16= h22
17= h13
18= ?
19= h32 or h28
20= h30
21= h23 or h11
22= h35 or h15
???

h1=0
h2=1
h3=1
h4=1
h5= parity
h6= parity
h7=0
h8=1
...
h36=1

i cannot find any solid correlation with the first part of the printed number and the hex number.

Last edited by marshmellow (2015-07-01 23:31:33)

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#4 2014-12-31 12:13:59

asper
Contributor
Registered: 2008-08-24
Posts: 1,409

Re: Keri systems card (PSK)

Superb work my friend !

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#5 2015-07-01 23:44:10

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: Keri systems card (PSK)

got a little closer.  updated above.

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#6 2017-01-10 15:14:49

Sentinel
Contributor
Registered: 2012-11-26
Posts: 191

Re: Keri systems card (PSK)

hi marshmellow!
add 2 card to puzzle
Printed                 HEX
K2748-1194449  8018DA7AE  new   
K2748-1194450  80389A79E   new

K2442*1402024  988581D9E
K2442*1402025  9885C1D8E
K2913-2474401  C882D58AE
K3053-2479751  ECA3C52BE
K3053-2479801  F893C5AAE
K3053-2479851  F8A3C7ABE
K3053-2479901  FC93552AE
K3053-2480001  E883D529E
K3053-2480201  D88A4728E
K3053-2480251  D8BA47A9E
K0584-2621951  D630D68AE
K0584-2622001  E210448BE
K0584-2622051  E220468AE
K0584-2622101  E610C40AE
K0584-2622151  E620C60BE
K0584-2622250  F2201489E
K0584-2622251  F2205488E
K0584-2622301  F610560AE
K0584-2622351  F620D409E
K0584-2622401  E200D609E

printed number bit:
1 = h19
2 = h26
3 = h31
4 = h33
5 = h25
6 = h12
7 = h14
8 = h20
9 = h17
10= h34
11= h21
12= h24
13= h10
14= h9
15= h32 or h28
16= h22
17= h13
18= h16 new!
19= h32 or h28
20= h30
21= h23 or h11
22= h35 or h15
???

h1=0
h2=1
h3=1
h4=1
h5= parity
h6= parity
h7=0
h8=1
...
h36=1

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#7 2017-01-10 16:39:06

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: Keri systems card (PSK)

i added a little more data:

Sentinel wrote:

hi marshmellow!
add 2 card to puzzle
Printed                 HEX
K2748-1194449  8018DA7AE  new   
K2748-1194450  80389A79E   new

K2442*1402024  988581D9E
K2442*1402025  9885C1D8E
K2913-2474401  C882D58AE
K3053-2479751  ECA3C52BE
K3053-2479801  F893C5AAE
K3053-2479851  F8A3C7ABE
K3053-2479901  FC93552AE
K3053-2480001  E883D529E
K3053-2480201  D88A4728E
K3053-2480251  D8BA47A9E
K0584-2621951  D630D68AE
K0584-2622001  E210448BE
K0584-2622051  E220468AE
K0584-2622101  E610C40AE
K0584-2622151  E620C60BE
K0584-2622250  F2201489E
K0584-2622251  F2205488E
K0584-2622301  F610560AE
K0584-2622351  F620D409E
K0584-2622401  E200D609E

printed number bit:
1 = h19
2 = h26
3 = h31
4 = h33
5 = h25
6 = h12
7 = h14
8 = h20
9 = h17
10= h34
11= h21
12= h24
13= h10
14= h9
15= h32 new!
16= h22
17= h13
18= h16 new!
19= h28 new!
20= h30
21= h11 new!
22= h15 new!
???

h1=0
h2=1
h3=1
h4=1
h5= odd  parity 010101010101...
h6= even parity 101010101010...
h7=0
h8=1
...
h18=0?
...
h23=?
...
h27=0?
...
h29=0?
...
h35=?
h36=1

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#8 2017-05-19 05:55:46

henc
Contributor
Registered: 2017-05-13
Posts: 11

Re: Keri systems card (PSK)

Hey guys, did anyone ever end up solving this one?

I've got two more samples but still can't figure out how to reverse engineer the printed numbers to the bit format:

K0197-708671     6F1B2455F
K0197-708695     671B25157

Any help is much appreciated!

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#9 2017-05-19 06:34:18

Sentinel
Contributor
Registered: 2012-11-26
Posts: 191

Re: Keri systems card (PSK)

The keri cards end in ....8E  ...9E  ...AE   ....BE
Not ...5F or ...57
Show the full trace you card

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#10 2017-05-19 16:49:58

henc
Contributor
Registered: 2017-05-13
Posts: 11

Re: Keri systems card (PSK)

Sorry I'm really new to using the proxmark, these were the traces using lf indalademod. Can you let me know the command to get the full trace?

Thanks!

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#11 2017-05-20 04:40:05

ntk
Contributor
Registered: 2015-05-24
Posts: 701

Re: Keri systems card (PSK)

in proxmark3 terminal run:
lf search
lf read
data samples
data save c\:file-name.pm3

then pastebin or drop box the c\:file-name.pm3

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#12 2017-05-23 13:58:58

henc
Contributor
Registered: 2017-05-13
Posts: 11

Re: Keri systems card (PSK)

Hey thanks a lot ntk, here's the two data samples:

K0197-708671: https://pastebin.com/aW0CrmUy
K0197-708695: https://pastebin.com/N9Bz2Rdi

Let me know if that helps at all!

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