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June 16, 2000

How to Recover Lost Administrator Passwords


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Now and then many of you find yourselves in the unfavorable position of having to retrieve an NT system's lost Administrator account password. I can't even count the number of "help me!" messages I've received in this regard.

As I tell those of you who email me for help in this situation, there a couple of different approaches you can take, depending on your exact position. In any event you have two basic choices when recovering an Administrator password: you must either crack it or forcefully reset it to something known. It seems obvious to me that resetting the password will take much less time that brute force cracking, so it's a more cost affective way to handle the situation.

If you do want to brute force the password to see what it was set to, then you must obtain a copy of the system's SAM database and use a tool such as L0phtcrack to brute force crack the password. To get a copy of the SAM database, use NTFSDOS or a Linux boot disk with NTFS drivers on it. Either of those tool will allow you to boot a system from floppy and then read the installed NTFS partitions. You can find NTFSDOS at Winternals (http://www.winternals.com,) while Linux boot disks are available at various sites such as Ken Pfiel's NT Toolbox Web site (http://www.nttoolbox.com). . . .


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Reader Comments
<br>
The Linux boot disk worked great....until today I was all pro microsoft but when I saw with my own eyes what that disk was able to do in a matter of seconds I became a beliver!!!<br>

James R. Overton June 11, 2001


<br><br>
This linux boot disk worked fine on a single IDE or SCSI drive. It did not work on a RAID 5 installation.<br>
Later<br>
Marc<br>

Marc Bassil June 20, 2001


<br><br>
It does't seems to work on compaq array controller with SCSI drives (mirroring)...<br>

Patrick November 01, 2001


<br><br>
The Linux method doesn't work for Win2k NTFS partitions.<br>

Dan March 06, 2002


<br><br>
I couldn't understand the offline stuff. Can someone please tell me step by step what to type for nt partitition?<br>

bad newz brown1 June 17, 2002


I can replace (substitute)SAM file and so change password of administrator?
is it true?

ali December 10, 2003


Do Linux Boot disks word with Compaq RAID Arrays?

Mak December 18, 2003


Your Comments (required): This is nothing but Great !!!

Jin June 15, 2004


BOO I'M A TURTLE!!!

Anonymous User March 21, 2005 (Article Rating: )


Forgot your username/password

Anonymous User May 12, 2005 (Article Rating: )


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