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17 years ago
For thoes of you who're looking to generate an NTLM hash (not an LM hash), I found out it's quite simple..

It uses the basic MD4 function, but the password needs to be in Unicode Little Endian encode first (this canbe achieved by the iconv function).

This can be done easily by using the following code:

<?php
function NTLMHash($Input) {
  // Convert the password from UTF8 to UTF16 (little endian)
  $Input=iconv('UTF-8','UTF-16LE',$Input);

  // Encrypt it with the MD4 hash
  $MD4Hash=bin2hex(mhash(MHASH_MD4,$Input));

  // You could use this instead, but mhash works on PHP 4 and 5 or above
  // The hash function only works on 5 or above
  //$MD4Hash=hash('md4',$Input);

  // Make it uppercase, not necessary, but it's common to do so with NTLM hashes
  $NTLMHash=strtoupper($MD4Hash);

  // Return the result
  return($NTLMHash);
}
?>

To produce an LM hash requires a fully-written script containing the algorithm used to make it.

Enjoy,
CraquePipe.
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