Penetration Testing mailing list archives
Re: Windows XP / 2K3 Default Users
From: "Brendan Dolan-Gavitt" <mooyix () gmail com>
Date: Mon, 30 Oct 2006 22:29:42 -0500
You're probably correct in assuming that it's "silly LM hash cracking".However, that has nothing to do with syskey protection. Syskey provides essentially no protection now that the algorithm has been reverse engineered. Look into bkhive and samdump2; it's quite simple to boot a live linux distro, dump the un-syskeyed hashes (all you need are the SAM and SYSTEM hives), and then crack the "silly LM hash"--which is still on by default after all these years. -Brendan On 10/30/06, Thor (Hammer of God) <thor () hammerofgod com> wrote:
You "routinely" crack passwords on SAM's that are SYSKEY'd by default (128-bit) with rainbow tables? XP/2k3 has syskey on by default... And any password over 14 characters automatically clear the LM hash, even if you have not turned it off (which I can't imagine anyone not doing.) So, I'm guessing that the "rainbow table" hubbub is all 40-bit, or silly LM hash cracking, right? Or am I missing something here? t On 10/26/06 2:07 PM, "ep" <captgoodnight () hotmail com> spoketh to all: > I crack these routinely when pentesting/playing, granted, it's by pushing > the sam through rainbow tables, thus admin access... > Basically, any sam once in hand, is cracked these days via rainbowtables. > There're ways to prevent this from happening, but most admins don't go that > extra step... > > --cg > > -----Original Message----- > From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On > Behalf Of Joey Peloquin > Sent: Wednesday, October 25, 2006 12:38 PM > To: s-williams () nyc rr com; Pen-Testing > Subject: Re: Windows XP / 2K3 Default Users > > s-williams () nyc rr com wrote: >> Hello list this might be an easy question to answer but have anyone >> been sucessful in using windows built in default accounts when doing a >> password audit. I > know most >> xp machines has (help assitant and support_xxxxxxxx). Is their a >> default > list out >> there some where with various vendor OS passwords, or a way to figure >> out the password for these accounts. >> Sent via BlackBerry from T-Mobile > > You can try to crack them through normal means, but it'd likely be a futile > act since a) they are randomized and *extremely* complex (as far as I > recall) and b) even my ~13 year old knows to restrict these accounts. There > are clueless admins out there though, so, *shrug*. > > -jp > > > > ------------------------------------------------------------------------ > This List Sponsored by: Cenzic > > Need to secure your web apps? > Cenzic Hailstorm finds vulnerabilities fast. > Click the link to buy it, try it or download Hailstorm for FREE. > http://www.cenzic.com/products_services/download_hailstorm.php?camp=70160000 > 0008bOW > ------------------------------------------------------------------------ > > > > ------------------------------------------------------------------------ > This List Sponsored by: Cenzic > > Need to secure your web apps? > Cenzic Hailstorm finds vulnerabilities fast. > Click the link to buy it, try it or download Hailstorm for FREE. > http://www.cenzic.com/products_services/download_hailstorm.php?camp=7016000000 > 08bOW > ------------------------------------------------------------------------ > > > ------------------------------------------------------------------------ This List Sponsored by: Cenzic Need to secure your web apps? Cenzic Hailstorm finds vulnerabilities fast. Click the link to buy it, try it or download Hailstorm for FREE. http://www.cenzic.com/products_services/download_hailstorm.php?camp=701600000008bOW ------------------------------------------------------------------------
------------------------------------------------------------------------ This List Sponsored by: Cenzic Need to secure your web apps? Cenzic Hailstorm finds vulnerabilities fast. Click the link to buy it, try it or download Hailstorm for FREE. http://www.cenzic.com/products_services/download_hailstorm.php?camp=701600000008bOW ------------------------------------------------------------------------
Current thread:
- Windows XP / 2K3 Default Users s-williams (Oct 25)
- Re: Windows XP / 2K3 Default Users Joey Peloquin (Oct 26)
- RE: Windows XP / 2K3 Default Users ep (Oct 26)
- Message not available
- Re: Windows XP / 2K3 Default Users Machiavel (Oct 28)
- Re: Windows XP / 2K3 Default Users pand0ra (Oct 28)
- Re: Windows XP / 2K3 Default Users Joey Peloquin (Oct 26)
- <Possible follow-ups>
- Re: Windows XP / 2K3 Default Users Thor (Hammer of God) (Oct 30)
- Re: Windows XP / 2K3 Default Users Brendan Dolan-Gavitt (Oct 31)
- Re: Windows XP / 2K3 Default Users Lee Lawson (Oct 31)
- Re: Windows XP / 2K3 Default Users Thor (Hammer of God) (Oct 31)