Hi to all.

Who can help?

I sent myself an SMS and got cfile.

wireshark:
.......................................................................................................................
 415    20.954860000    127.0.0.1    127.0.0.1    LAPDm    81    U,
func=UI(DTAP) (RR) System Information Type 5
 416    20.992233000    127.0.0.1    127.0.0.1    LAPDm    81    U F,
func=UA(DTAP) (MM) CM Service Request
 417    21.002196000    127.0.0.1    127.0.0.1    LAPDm    81    U,
func=Unknown(DTAP) (SS)
 418    21.091181000    127.0.0.1    127.0.0.1    LAPDm    81    I, N(R)=1,
N(S)=0(DTAP) (RR) Ciphering Mode Command
.......................................................................................................................
Kc received from the card reader and the program SIMspyII:

wireshark:
............................................................................................................................
572    36.754553000    127.0.0.1    127.0.0.1    LAPDm    81    I, N(R)=2,
N(S)=1(DTAP) (SMS) CP-DATA (RP) RP-ACK (Network to MS)
579    36.816737000    127.0.0.1    127.0.0.1    LAPDm    81    U,
func=UI(DTAP) (RR) System Information Type 5
581    36.861220000    127.0.0.1    127.0.0.1    LAPDm    81    I, N(R)=3,
N(S)=2 (Fragment)
582    36.963894000    127.0.0.1    127.0.0.1    GSM SMS    81    I,
N(R)=3, N(S)=3(DTAP) (SMS) CP-DATA (RP) RP-DATA (Network to MS)
583    37.029014000    127.0.0.1    127.0.0.1    LAPDm    81    U,
func=UI(DTAP) (RR) System Information Type 6
..........................................................................................................................
TP-User-Data
        SMS text: Test


All is well. OK


Then try to get Kc using the Kraken.

For sending SMS

System Information Type 5 message:
......................................................

540741 1: 05 02 03 03 49 06 1d 08 00 00 00 10 14 00 00 00 00 00 00 00 51 84
00
./gsmframecoder 05 02 03 03 49 06 1d 08 00 00 00 10 14 00 00 00 00 00 00 00
51 84 00
....................................................................................
xor.py with  + 204 to the Frame Number

For incoming SMS
System Information Type 5 message:
.........................................................................
544829 1: 05 01 03 03 49 06 1d 08 00 00 00 10 14 00 00 00 00 00 00 00 51 84
00
./gsmframecoder 05 01 03 03 49 06 1d 08 00 00 00 10 14 00 00 00 00 00 00 00
51 84 00
--------------------------------------------------------------------------
xor.py with  + 204 to the Frame Number

Worked with different combinations. Kraken not finds Kc.

P.S. Example vf_call6_a725_d174_g5_Kc1EF00BAB3BAC7002.cfile - OK
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  • [A51] Kraken SMS Александр Воронков

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