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Encrypted Samsung Galaxy S9

Discussion of forensic issues related to all types of mobile phones and underlying technologies (GSM, GPRS, UMTS/3G, HSDPA, LTE, Bluetooth etc.)
Subforums: Mobile Telephone Case Law
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TinyBrain
Senior Member
 

Re: Encrypted Samsung Galaxy S9

Post Posted: Jan 19, 19 22:52

Happy holiday :-))  
 
  

Bolo
Senior Member
 

Re: Encrypted Samsung Galaxy S9

Post Posted: Jan 20, 19 22:14

Hello,

Data after factory reset can be recovered using NAND protocol - we performed many of such task which fully positive results and recovered many data even when reading over ISP, SD protocol (ChipOff) brings no results at all but we tried this right now on NOT encrypted phones. Yours phones are encrypted out of box......

P.S
Performing factory reset on phone which is encrypted complicate a lot this but it's NOT impossible as @Passcode writes. While normal approach of encrypted device will be decrypting those similar need to be done after recovery over NAND but....... there is one trick . This can be done ONLY if we will get full logicial structure so perfectly reconstructed NAND image recovery which is not always possible - in case we will get partial RAW it will be very hard or almost impossible to apply decryption key on fragmented data to decrypt those correctly.
_________________
Multi-COM - Bogusław Rzepka 
 
  

north
Member
 

Re: Encrypted Samsung Galaxy S9

Post Posted: Jan 21, 19 10:01

I would like to thank the members who helped me with this. The information you provide is very important to me. This information contributed a lot to our work.  
 
  

arcaine2
Senior Member
 

Re: Encrypted Samsung Galaxy S9

Post Posted: Jan 21, 19 21:26

@Bolo, of course, but recovering from NAND is lower level and destructive. Still, even after reviving the phone by using a different UFS memory chip and rooting there's no guarantee that you'll be able to recover encryption key that was used before. Or there some new discoveries on that field as well?  
 
  

Bolo
Senior Member
 

Re: Encrypted Samsung Galaxy S9

Post Posted: Jan 22, 19 13:17

Yes - recovery over NAND is low level memory access which is destructive where you access directlly cells without using controller as a bridge.... there are no guarantee what we will get after this since nobody knows how GB mechanism works/when system send clear command , how often etc.. If Trim CMD was send then there can be no Garbage blocks at all so there are nothing to read or decrypt.... many factors but.... if someone tell me: data is important no metter at what cost then its worth a try Wink As Alexander Great says "There are no impossible things, they are only difficult to do"  
 

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