Compair password in ActiveDirectory

Hey

I have a TXT file contaning users and passwords.

For example:
Trudy;MyPassword1
Bob:MyPassword2

I would like to compair an users password in ActiveDirectory and the password in file. (match or not)

Is it possible (compair hash to the passwords in the file)

Thanks in advance

Mike
LVL 1
mikeydkAsked:
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rhandelsCommented:
Hey,

I really hope this isn't possible in any domain environment. You cannot extract password from AD as these are assigned to the user and this information can never be given to anyone else except the user itself. So no, it is not possible to do this.

Why would you even want to do this?? To check and see if a guest account still has a correct password?
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Prashant GirennavarCommented:
You can't extract password from Active Directory to compare.

Passwords in AD are stored in hashes , and there is no method to extract them to friendly name

More is here
 https://www.myotherpcisacloud.com/post/2013/11/06/More-Windows-and-AD-Cryptography-Mumbo-Jumbo.aspx

Thanks,

-Prashant Girennavar.
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footechCommented:
Well, you actually can crack the passwords if you have access to the files (the link above describes this),  You can access the files easily if you are a domain admin.  I wouldn't provide any guidance on cracking all the passwords, but if you go through all that you can end up with a list of usernames and passwords, which you could then compare to your list.  But no, there is no "reveal password" function built in to AD.
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rhandelsCommented:
Just my 2 cents but even if it would be possible (there must be some NSA guys listening in right??) would you ever in your right mind suggest an admin to do something like this?? I'm not quite sure about privacy regulations in the US but if you try to pull this of in the EU and the user finds out you will have one massive issue on your hands..

I for one would never try to go that route..
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footechCommented:
No, I generally wouldn't recommend that an admin do this.  If there's any help for it, one user (whether an admin or not) should never know the password of another user.  The only semi-valid reason I'm aware of is a password-strength audit.
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McKnifeCommented:
Can be done simply by using the command
net use x: \\domain\netlogon /user:username password
if this succeeds (errorlevel is zero), the passwords match.
So you could use a script to mass check those matches.
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