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Again Samsung n9200 Note5 CROM Service unlock issue  

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Dr.wonder
(@dr-wonder)
Junior Member

Hey to all,

Yesterday we got a Samsung N9200 Note5 with an unknown password locked,the system is Android 6.0.1,see pic

But unfortunately we can't flash custom recovery,because its has CROM locked,which mean bootloader is locked.

and also I can't enter the phone system to install CROM Service to unlock the bootloader because it is also screen locked. So is this very hard problem and difficult to handle?

Does anybody have any idea please let me know,Thanks!

wonder

Quote
Posted : 19/07/2016 1:03 pm
passcodeunlock
(@passcodeunlock)
Senior Member

My first thought is to maybe ask Mr. Igor Michailov if chip-off would work for this device.

The second thought is to bruteforce the password, but that could be dangerous if there are security settings to wipe the phone after too many bad password attempts. From my experience, usually this is not set on android devices.

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Posted : 20/07/2016 2:19 pm
Dr.wonder
(@dr-wonder)
Junior Member

hi,there,
One of my colleague told me that if CROM services is lock on the device will be in full disk encryption(FDE),Is it ture?So the chip-off method will be very difficult to handle and very hard .

Or Is there some backdoors or vulnerabilities we can use such as Qualcomm CVE-2015-6639 and CVE-2016-2431?

Any possibility?

wonder

ReplyQuote
Posted : 20/07/2016 6:49 pm
passcodeunlock
(@passcodeunlock)
Senior Member

I've read about those CVE entries, but I didn't have any device image to decrypt yet, because if the phone was locked with no USB debug enabled, nobody could create a physical image of it…

So, what remains is number two, bruteforce, with all it's theoretical and practical risks. PM me if you need help with this.

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Posted : 22/07/2016 2:22 am
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