The Renaissance of NTLM Relay Attacks: Everything You Need to Know
Security Boulevard
APRIL 8, 2025
It was developed in 1993, in the unfortunate days when DES was the standard encryption algorithm, so thats what Microsoft used to generate the response, as described in the diagrambelow: As shown above, the clients password is transformed into an NT hash, which is the MD4 hash of the Unicode-encoded password, to be used as the DES encryption key.
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