RE: Password "security" - was"Passwords with Lan Manager (LM) und er Windows" and "Whitespace in passwords"

["Dufresne, Pierre" <PIERRE.DUFRESNE () MESS GOUV QC CA>]

I hope everybody following this thread is aware that whether any version of
a cracking tool can crack or not non-printable characters is irrelevant.  If
it can't, the authors could probably patch their tool very fast.

As someone mentioned earlier, the game is now: how do you protect the hashes
when a computer is lost or stolen?

I work in a Windows environment. The only immediate measure I can think of
is the use of SYSKEY with a password prompt.
Could anyone provide me with other simple solution?  Thanks


Note to moderator: may be it would be better to start a new thread with a
subject like "hashes protection in Windows"
Thanks

Pierre

> Hi Dave,
>
> Lepton's Crack can, for sure. I dunno if the version with non-printable
> characters is 20040914 or 20040916 (the later is not online, I'm afraid, I
> have it on a CD somewhere).
> Just had a look at the CHANGES file:>
>
>       20040914/
>       - Added support for any ASCII character (ie. also non-printable) in
>         the charset and regex definition, via \0(octal), \x(hex),
> \(decimal)
>
> Do a Google search for
>
>       password cracker "non printable" characters
>
> And have fun collating the results.
> Cheers,
>
> Miguel
>
>
> -----Original Message-----
> From: dave kleiman [mailto:dave () isecureu com] 
> Sent: 26 September 2005 15:00
> To: 'Miguel Dilaj'
> Cc: pen-test () securityfocus com
> .Subject: RE: Password "security" - was"Passwords with Lan Manager (LM)
under
> Windows" and "Whitespace in passwords"
>
>
> > Regarding "Whitespace in passwords", and as some people already 
> > mentioned, modern password cracking software (both commercial and 
> > free) can find non-printable chars, so space or ALT-whatever are going 
> > to be found anyway. Rainbow tables now tend to include space, but I 
> > still haven't heard of anyone producing a table for 0x00-0xff
> > (0x0000-0xffff if you use extended unicode chars ;-)
> > Applications CAN be broken by using strange characters, so YMMV.
>
>
> Can you provide a list of those that have that ability, I will gladly test
> them.
>
> The most popular ones cannot i.e. L0pht, Cain etc. See:
> http://www.securityfocus.com/archive/88/312263
>
>
> Dave


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