From tchen at on-go.com  Tue Feb 20 20:02:13 2018
From: tchen at on-go.com (Thomas Chen)
Date: Tue, 20 Feb 2018 15:02:13 -0500
Subject: Fwd: SIM select file (A4) command
In-Reply-To: <08805309-4624-fe3a-f673-f2b8c5ba866b@gmail.com>
References: <08805309-4624-fe3a-f673-f2b8c5ba866b@gmail.com>
Message-ID: <22d4b237-3e5f-e800-9c08-07fec4ef3af2@on-go.com>



i noticed the GSM modem issued a couple SELECT (a4) commands that i
cannot find the documentation for

would any one be able to help identify these ???

thanks



00 a4 00 04 02 7f ff

00 a4 00 04 02 7f 66


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From michau.benoit at gmail.com  Tue Feb 20 22:53:19 2018
From: michau.benoit at gmail.com (benoit michau)
Date: Tue, 20 Feb 2018 23:53:19 +0100
Subject: SIM select file (A4) command
In-Reply-To: <22d4b237-3e5f-e800-9c08-07fec4ef3af2@on-go.com>
References: <08805309-4624-fe3a-f673-f2b8c5ba866b@gmail.com>
 <22d4b237-3e5f-e800-9c08-07fec4ef3af2@on-go.com>
Message-ID: <CAOB3c4Eu1u--OQRqMmukXB+RgJpi7LeMQ_=mdu5w8WcM8S_BgA@mail.gmail.com>

Hi,

looking at a sysmoUSIM file system (see
http://michau.benoit.free.fr/codes/smartcard/sysmoUSIM/index.htm), it
looks like addresses 7F FF and 7F F0 are aliases (or symlink ?) for
the USIM AID.
No idea for the 7F 66 address.

Benoit

2018-02-20 21:02 GMT+01:00 Thomas Chen <tchen at on-go.com>:
>
>
> i noticed the GSM modem issued a couple SELECT (a4) commands that i
> cannot find the documentation for
>
> would any one be able to help identify these ???
>
> thanks
>
>
>
> 00 a4 00 04 02 7f ff
>
> 00 a4 00 04 02 7f 66
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>


From laforge at gnumonks.org  Wed Feb 21 07:38:23 2018
From: laforge at gnumonks.org (Harald Welte)
Date: Wed, 21 Feb 2018 08:38:23 +0100
Subject: Fwd: SIM select file (A4) command
In-Reply-To: <22d4b237-3e5f-e800-9c08-07fec4ef3af2@on-go.com>
References: <08805309-4624-fe3a-f673-f2b8c5ba866b@gmail.com>
 <22d4b237-3e5f-e800-9c08-07fec4ef3af2@on-go.com>
Message-ID: <20180221073823.GX5490@nataraja>

On Tue, Feb 20, 2018 at 03:02:13PM -0500, Thomas Chen wrote:
> i noticed the GSM modem issued a couple SELECT (a4) commands that i
> cannot find the documentation for
> 
> would any one be able to help identify these ???
> 
> thanks
> 
> 00 a4 00 04 02 7f ff

ADF.USIM according to https://cedric.cnam.fr/~bouzefra/cours/CartesSIM_Fichiers_Anglais.pdf

> 00 a4 00 04 02 7f 66

no idea.

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)


From tchen61 at gmail.com  Tue Feb 20 19:58:43 2018
From: tchen61 at gmail.com (Thomas Chen)
Date: Tue, 20 Feb 2018 19:58:43 -0000
Subject: SIM select file (A4) command
Message-ID: <08805309-4624-fe3a-f673-f2b8c5ba866b@gmail.com>

i noticed the GSM modem issued a couple SELECT (a4) commands that i 
cannot find the documentation for

would any one be able to help identify these ???

thanks



00 a4 00 04 02 7f ff

00 a4 00 04 02 7f 66


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