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Arthur



Joined: 17 Oct 2007
Posts: 333


PostPosted: Fri Jan 11, 2008 18:39    Post subject: Sandisk, no marker found
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Flash type (USB, CF, SD...): Sandisk USB 4 GB
- Controller name: Sandisk 20-99-00121-1 / S649-720141
- Flash chips amount: 1
- Flash chip name: SDTNKHHSM-32768
- Config file content (Show config)
- Dumps amount: 1
- Do you found FAT? Yes, after byteswap.
- Is there mix? Cannot find fat-tables
- Do you remove mix? No

MNG SanDisk
ID 0x45 0xcc 0x94 0x65 (error)
Bits 16
Page 2112
MB 4096
COL 2
RAW 3
READ 0x30
SBACK 0x00
End

(This chip ID: 0x45 0xb7 0x96 0xe5)

Successfully reading this chip after modification to reader.

I can't find marker. I found FAT32 after byteswap but no fat-tables. There is also a lot of readable text in dump. Any suggestions on how to proceed ?

See file 300k put on ftp, sandisk_no_marker.rar
Сергей



Joined: 26 Aug 2005
Posts: 20282

Flash-Extractor developer

PostPosted: Sat Jan 12, 2008 16:06    Post subject:
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This controller have some differences in algorithm.
I hack one some weeks later.
I need more dumps to make universal util.

Put full dump on ftp
And i help recover data.

Before you send dump!
Make experiment.
Split by dump (2)
Compare result dumps.
If they identical half MB in config.
Repeat.

Try read id in 2,3,4 banks.
Arthur



Joined: 17 Oct 2007
Posts: 333


PostPosted: Mon Jan 14, 2008 17:36    Post subject:
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Сергей wrote:
Put full dump on ftp
And i help recover data.

Before you send dump!
Make experiment.
Split by dump (2)
Compare result dumps.
If they identical half MB in config.
Repeat.

Try read id in 2,3,4 banks.

Files not identical in half MB.
Reading id in 2,3,4 banks gives error

I have uploded dump to ftp. File is password protected. I 'll send password via email.
Thank's
Сергей



Joined: 26 Aug 2005
Posts: 20282

Flash-Extractor developer

PostPosted: Wed Jan 16, 2008 12:35    Post subject:
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what content flash disk?
can it be apple mac or samthing like this?
can it be cipcher disk?
Arthur



Joined: 17 Oct 2007
Posts: 333


PostPosted: Wed Jan 16, 2008 14:45    Post subject:
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Сергей wrote:
what content flash disk?
can it be apple mac or samthing like this?
can it be cipcher disk?

Flash should be PC formatted. Customer have only PC. I know that it is 2 partitions by default on these memories. One that autostarts with sandisk utilities.
Алексей Алексеевич



Joined: 28 Nov 2005
Posts: 98
Location: Moscow, Soft-Center

PostPosted: Mon Jan 21, 2008 14:29    Post subject:
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I put file ARTHUR.rar at FTP. PSW send to your E-mail.
I don't found any well-known file systems. I construct image like same flash.
Arthur



Joined: 17 Oct 2007
Posts: 333


PostPosted: Wed Jan 23, 2008 14:51    Post subject:
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Алексей Алексеевич wrote:
I put file ARTHUR.rar at FTP. PSW send to your E-mail.
I don't found any well-known file systems. I construct image like same flash.

This chip was from an SandDisk with a physically broken PCB. I moved the controller and memory chip to another pcb, and it works. It is FAT32.

Can i do something that helps further analyzing of this controller?
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