Machine password encrypted by admin password in SP3?

Luke Kenneth Casson Leighton lkcl at
Wed Apr 22 14:04:57 GMT 1998

On Wed, 22 Apr 1998, Luke Kenneth Casson Leighton wrote:

> On Wed, 22 Apr 1998, Paul Ashton wrote:
> > 
> > paulle at said:
> > 
> > > You have to add the workstation to the DC _from the workstation_ by
> > > specifying the name of an account with the right to create machine accounts
> > > and its password.
> what this does over-the-wire is to open a \PIPE\samr with NTLMSSP
> encryption, and add an LSA_USER_INFO_21 structure with ACB_WKSTRUST, an
> account of MACHINE$ and a random password.

oops!  sorry: because it's encrypted, we don't _know_ that it's a random
password.  so, i should say, it sends account information which, following
this (unknown) transaction, it can be demonstrated that a workstation is
considered to be a member of the DC's domain.


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