| = osmo-sim-auth = |
| |
| This is a small script that can be used with a PC-based smart card |
| reader to obtain GSM/UMTS authentication parameters from a SIM/USIM |
| card. |
| |
| == prerequisites == |
| |
| We assume that you have |
| |
| * A smart card reader compatible with pcsc-lite |
| * Installed python program and pyscard library |
| |
| |
| === smart card reader === |
| |
| Any reader supported by pcsc-lite will work. However, a reader |
| compatible with the USB CCID device class is much recommended. |
| |
| Please verify that the hardware and driver setup is working, e.g. by |
| using the 'pcsc_scan' tool included with pcsc-lite. You should get an |
| output like: |
| {{{ |
| V 1.4.17 (c) 2001-2009, Ludovic Rousseau <ludovic.rousseau@free.fr> |
| Compiled with PC/SC lite version: 1.5.5 |
| Scanning present readers... |
| 0: OmniKey CardMan 5121 00 00 |
| |
| Wed Dec 7 01:32:37 2011 |
| Reader 0: OmniKey CardMan 5121 00 00 |
| Card state: Card inserted, Shared Mode, |
| ATR: 3B 9F 95 80 1F C7 80 31 E0 73 FE 21 13 57 12 29 11 02 01 00 00 C2 |
| |
| ATR: 3B 9F 95 80 1F C7 80 31 E0 73 FE 21 13 57 12 29 11 02 01 00 00 C2 |
| }}} |
| |
| plus many more lines of output decoding the ATR. |
| |
| If you only get |
| {{{ |
| PC/SC device scanner |
| V 1.4.17 (c) 2001-2009, Ludovic Rousseau <ludovic.rousseau@free.fr> |
| Compiled with PC/SC lite version: 1.5.5 |
| Scanning present readers... |
| 0: OmniKey CardMan 5121 00 00 |
| |
| Wed Dec 7 01:35:08 2011 |
| Reader 0: OmniKey CardMan 5121 00 00 |
| Card state: Card removed, |
| }}} |
| |
| then your card was not detected in the reader. |
| |
| If you don't even get any displayed readers, your hardware and/or driver |
| setup are likely wrong. |
| |
| |
| === pyscard === |
| |
| pyscard can be installed from packages of major Linux distributions. |
| |
| If you want to build it from source, it is available from |
| http://pyscard.sourceforge.net/ |
| |
| |
| == running osmo-sim-auth == |
| |
| {{{ |
| $ ./osmo-sim-auth.py --help |
| Usage: osmo-sim-auth.py [options] |
| |
| Options: |
| -h, --help show this help message and exit |
| -a AUTN, --autn=AUTN AUTN parameter from AuC |
| -r RAND, --rand=RAND RAND parameter from AuC |
| -d, --debug Enable debug output |
| -s, --sim SIM mode (default: USIM) |
| }}} |
| |
| you can run the program in two modes: |
| * running GSM authentication (classic SIM card protocol) |
| * running UMTS authentication (USIM card protocol) |
| |
| === classic GSM authentication === |
| |
| This mode will use the "RUN GSM ALGORITHM" command as specified in GMS |
| TS 11.11 |
| |
| You have to specify |
| * the 16 byte RAND value from the AuC (-r) as 32 hex digits |
| * the '-s' flag to enable SIM mode |
| |
| {{{ |
| $ ./osmo-sim-auth.py -r 00000000000000000000000000000000 -s |
| Testing SIM card with IMSI 901700000000403 |
| |
| GSM Authentication |
| SRES: 215fdb4d |
| Kc: 6de816a759a42912 |
| }}} |
| |
| === UMTS authentication === |
| |
| This mode will use the "AUTHENTICATE" command as specified in 3GPP TS |
| 31.102 |
| |
| You have to specify |
| * the 16 byte RAND value from the AuC (-r) as 32 hex digits |
| * the 16 byte AUTN value from the AuC (-a) as 32 hex digits |
| |
| ==== successful operation ==== |
| |
| In this case, the tool will output the following values obtained from |
| the card: |
| * RES authentication result value |
| * CK ciphering key |
| * IK integrity key |
| * Kc for inter-RAN handover from UMTS -> 2G |
| |
| Secondly, the tool will re-run the authentication in "2G authentication |
| context" in order to obtain the SRES result. This value would be used |
| if a 3G/2G dual-mode phone registers on a 2G network. |
| |
| {{{ |
| python ./osmo-sim-auth.py -r 00000000000000000000000000000000 -a ec9320c2c2000000e1dd22c1ad3e2d3d |
| [+] UICC AID found: |
| found [AID 1] 3GPP || USIM || (255, 134) || (255, 255) || (137, 255, |
| 255, 255, 255) |
| [+] USIM AID selection succeeded |
| |
| Testing USIM card with IMSI 901700000000403 |
| |
| UMTS Authentication |
| RES: e9fc88ccc8a35381 |
| CK: 7200a184d8f2c758fbdf87900ddbf275 |
| IK: 12cb2dd3e0ec8378f6fc1d606c619f47 |
| Kc: 6de816a759a42912 |
| |
| GSM Authentication |
| SRES: 215fdb4d |
| Kc: 6de816a759a42912 |
| }}} |
| |
| ==== synchronization required ==== |
| |
| In this case, the AUTHENTICATE command will return the AUTS parameter, |
| which has to be sent to the AuC in order to re-synchronzie the SQN |
| counter which is kept in both the USIM as well as the AuC. |
| |
| {{{ |
| ./osmo-sim-auth.py -r 00000000000000000000000000000000 -a ec9320c2c2120000c8b7de2a3449f1bd |
| [+] UICC AID found: |
| found [AID 1] 3GPP || USIM || (255, 134) || (255, 255) || (137, 255, |
| 255, 255, 255) |
| [+] USIM AID selection succeeded |
| |
| Testing USIM card with IMSI 901700000000403 |
| |
| UMTS Authentication |
| AUTS: 8711a0ec9e2be2f766881a64605b |
| |
| GSM Authentication |
| SRES: 215fdb4d |
| Kc: 6de816a759a42912 |
| }}} |