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Doug
 Doug
(@doug)
Active Member

Guys,

After getting a tip off from Twitter I felt it best to make a post so you are all aware.

O2 seem to have altered the network requirements for connection and authentication of a users SIM card.

If you clone an O2/Tesco/Giff Gaff SIM card using a tool like XRY and insert this clone into an evidential phone (standard procedure for the majority) you might find the phone makes a full connection and is able to make and receive calls etc.

Just a heads up!

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Posted : 12/07/2012 2:23 pm
Adam10541
(@adam10541)
Senior Member

Can you post a link to your source for this please?

Thanks )

ReplyQuote
Posted : 12/07/2012 2:30 pm
Doug
 Doug
(@doug)
Active Member

Tested it first hand this morning after seeing the comment on Twitter )

ReplyQuote
Posted : 12/07/2012 2:40 pm
Adam10541
(@adam10541)
Senior Member

I'm guessing that you were able to connect to the network and make/receive calls with a cloned SIM card..?

Was it XRY you cloned with or something different..

A little more details would be interesting and helpful )

ReplyQuote
Posted : 12/07/2012 2:48 pm
Doug
 Doug
(@doug)
Active Member

That is correct Adam, and yes, it was XRY in my tests.

ReplyQuote
Posted : 12/07/2012 2:54 pm
triran
(@triran)
Member

We have tested 2 types of O2 SIM Cards both 2G and 3G with 2 different handsets - no signal or ability to speak to the network.

ReplyQuote
Posted : 12/07/2012 4:19 pm
Doug
 Doug
(@doug)
Active Member

Hopefully that is a good sign that the network is getting back up to strength )

My tests were first thing this morning.

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Posted : 12/07/2012 4:40 pm
Doug
 Doug
(@doug)
Active Member

Re-used the same handset and clone card that earlier this morning and I have now failed to replicate the authentication.

It looks like the network might be functioning correctly again, at least as far as my test parameters show.

ReplyQuote
Posted : 12/07/2012 8:28 pm
trewmte
(@trewmte)
Community Legend

Doug

Please could you provide the link to the Twitter feed you read so that we can read it too?

Are you able to post the cloned list of all EF files from the original card and then selecting from the list the content of certain cloned EFs from the cloned card?

Can you confirm whether the clone was from an O2 GSM (icc) or 3G/GSM (uicc)

I agree that your tests could produce results that you have found, particularly where network is signalling A5/0 or a null value.

This is not the first time a cloned card when tested has been enabled to make and receive calls.

Thanks

ReplyQuote
Posted : 13/07/2012 11:40 am
trewmte
(@trewmte)
Community Legend

Doug

Please could you provide the link to the Twitter feed you read so that we can read it too?

Are you able to post the cloned list of all EF files from the original card and then selecting from the list the content of certain cloned EFs from the cloned card?

Can you confirm whether the clone was from an O2 GSM (icc) or 3G/GSM (uicc)

I agree that your tests could produce results that you have found, particularly where network is signalling A5/0 or a null value.

This is not the first time a cloned card when tested has been enabled to make and receive calls.

Thanks

Doug any chance of this info?

ReplyQuote
Posted : 15/07/2012 6:09 pm
Adam10541
(@adam10541)
Senior Member

The twitter post/feed that the OP referred to has since been deleted by the original poster

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Posted : 16/07/2012 7:29 am
Doug
 Doug
(@doug)
Active Member

I have sent a PM to discuss requirements.

For more information the tests were both done using USIM (UICC), one from the O2 network and one from Tesco. The O2 phone was a Galaxy SII and the Tesco phone was an iPhone 4s.

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Posted : 16/07/2012 7:22 pm
cyrus
(@cyrus)
Junior Member

I saw this story the other day explaining the outage a bit more

http//www.theregister.co.uk/2012/07/13/o2_outage_cause/

I would imagine you could connect for a short time due to issues mentioned here with user authentication, but this seems to be fixed now with o2.

For those that don't know, sim clones are designed to fail authentication with the network by sending an incorrect challenge response. I would imagine in this case (as has happened in the past when clone cards have connected), the authentication process was not done on each connection to reduce stress on the network.
I believe in past cases, some networks would authenticate on the 10th (or maybe 20th?) connection, and assume you were fine to connect in between that, allowing clone cards to connect until challenged.

ReplyQuote
Posted : 17/07/2012 11:48 am
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