AT&T UNIX PC - Need to hack user/password for access

Randy Dawson rdawson16 at
Sat Oct 25 22:12:32 CDT 2008

Totaly different machine, but I hacked a SGI Personal Iris I bought from Compaq this way:
Piped the drive out the serial port to a PC (boot rom feature)
found the /passwd dir
took the encrypted string and rinsed it thru a program, 'john the ripper'
with a dictionary kosdict
It came back in a day of crunching on a 2 Ghz Machine with the password
it was 'annamarie' but typed as if you moved your home keys up one.
John searches for stuff like this.
The SGI had the chicago source on it.

> Date: Sat, 25 Oct 2008 22:56:15 -0400
> From: keithvz at
> To: 
> Subject: Re: AT&T UNIX PC - Need to hack user/password for access
> B Degnan wrote:
> > Hi
> > One of my students was able to repair an AT&T 7300 (67MB version) UNIX 
> > PC powersupply.  Now it boots up, but we don't have the username and 
> > password.  Any suggestions?
> > BillDeg
> > 
> I don't know which exact version of OS you'd have on that, but I will 
> say that many many initial versions of unix had tons of default 
> username/pw combinations.  There are lists to be found via google.
> If it's a 3B1 running AT&T System V, then I'm almost positive there were 
> some very popular default accts that had to be removed -- most people 
> didn't and resulted in many machines being vulnerable.
> Also, don't know anything about the file system, but if it's a common 
> one, you could potentially (and carefully) install the HD into a linux 
> box, mount it, retrieve /etc/passwd, and crack the sucker.  With today's 
> machines you might be able to brute-force the keyspace, or worst case, 
> put a pretty good dictionary attack on it.
> Keith

Store, manage and share up to 5GB with Windows Live SkyDrive.

More information about the cctech mailing list