string convert_NTLM(string ntlm)
{
/*
* An MD4 signature is then taken of this string, and which results in 128-bit code.
* While a vast improvement on the horrible LM hash, there was no place for a salt value,
* so once an intruder knew the mapping between the hashed value and the original password,
* they would easily map them. If you are interested, here is MD2 and MD4 [MD4]
*
* When you go this link, select "Unicode Little Endian format" and, for "hello", you should get:
*
* 066DDFD4EF0E9CD7C256FE77191EF43C
*/
Org.BouncyCastle.Crypto.Digests.MD4Digest md = new Org.BouncyCastle.Crypto.Digests.MD4Digest();
byte[] unicodePassword = Encoding.Convert(Encoding.ASCII, Encoding.Unicode, Encoding.ASCII.GetBytes(ntlm));
md.BlockUpdate(unicodePassword, 0, unicodePassword.Length);
byte[] hash = new byte[16];
md.DoFinal(hash, 0);
return(ntlm = BitConverter.ToString(hash));
/*
* We can check these with a Python script:
*
* import passlib.hash;
* string= "hello"
* print "LM Hash:" + passlib.hash.lmhash.encrypt(string)
* print "NT Hash:" + passlib.hash.nthash.encrypt(string)
*
* which gives:
*
* LM Hash:fda95fbeca288d44aad3b435b51404ee
* NT Hash:066ddfd4ef0e9cd7c256fe77191ef43c
*/
}
////////////////////////////////////////////////////////////////////////////////
//
////////////////////////////////////////////////////////////////////////////////
internal static Byte[] GenerateNTLM(String password)
{
Byte[] bPassword = Encoding.Unicode.GetBytes(password);
Org.BouncyCastle.Crypto.Digests.MD4Digest md4Digest = new Org.BouncyCastle.Crypto.Digests.MD4Digest();
md4Digest.BlockUpdate(bPassword, 0, bPassword.Length);
Byte[] result = new Byte[md4Digest.GetDigestSize()];
md4Digest.DoFinal(result, 0);
return(result);
}
public static byte[] MyHash(byte[] input)
{
Org.BouncyCastle.Crypto.Digests.MD4Digest dig = new Org.BouncyCastle.Crypto.Digests.MD4Digest();
byte[] output = new byte[dig.GetDigestSize()];
dig.BlockUpdate(input, 0, input.Length);
dig.DoFinal(output, 0);
return(output);
}
////////////////////////////////////////////////////////////////////////////////
//
////////////////////////////////////////////////////////////////////////////////
public static void GenerateNTLMString(String password)
{
try
{
Byte[] bPassword = Encoding.Unicode.GetBytes(password);
Org.BouncyCastle.Crypto.Digests.MD4Digest md4Digest = new Org.BouncyCastle.Crypto.Digests.MD4Digest();
md4Digest.BlockUpdate(bPassword, 0, bPassword.Length);
Byte[] result = new Byte[md4Digest.GetDigestSize()];
md4Digest.DoFinal(result, 0);
Console.WriteLine(BitConverter.ToString(result).Replace("-", ""));
}
catch (Exception ex)
{
Console.WriteLine("[-] Unhandled Exception Occured");
Console.WriteLine("[-] {0}", ex.Message);
}
}
protected override void Dispose(bool disposing)
{
dig = null;
}
public override void Initialize()
{
this.dig = null;
this.dig = new Org.BouncyCastle.Crypto.Digests.MD4Digest();
dig.Reset();
}
