5
Is there any way to enable/convert an NTLM hash for a user account on Windows 7 to a LM hash? I know it's not secure, but I am trying to test something. Is it even possible?
Matt
Posted 2011-09-27T00:38:29.133
Reputation: 437
enabling LM hash in Windows 7
Answers
3
NT hashes are NTLM hashes.
If you meant LM hashes, you can enable them via Group Policy (secpol.msc), but the changes will only apply after setting a new password – you cannot convert an existing hash to a weaker one. (This should be somewhat obvious, since the hashing would be entirely pointless if that was possible.)
user1686
Posted 2011-09-27T00:38:29.133
Reputation: 283 655
Where would I go in the Group Policy? – Matt – 2011-09-27T18:50:47.227
1Under Local Policies → Security, set "Network security: Do not store LAN Manager hash" to "Disabled". Optionally, adjust "Network security: LAN Manager authentication level" to accept and/or send LM in addition to NTLM. (Note that this is very insecure and must be reverted after tests.) – user1686 – 2011-09-27T18:57:25.560