static public SMB_COM_SESSION_SETUP_ANDX_RESPONSE SMB_AndxResponseFromBytes(byte[] arr)
{
SMB_COM_SESSION_SETUP_ANDX_RESPONSE str = new SMB_COM_SESSION_SETUP_ANDX_RESPONSE();
int size = Marshal.SizeOf(str);
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.Copy(arr, 0, ptr, size);
str = (SMB_COM_SESSION_SETUP_ANDX_RESPONSE)Marshal.PtrToStructure(ptr, str.GetType());
Marshal.FreeHGlobal(ptr);
return(str);
}
static public void DetectVersionOfWindows(byte[] res)
{
SMB_HEADER header = SMB_HeaderFromBytes(res);
if (!IsValidSMB1Header(header))
{
Console.WriteLine("Did not receive proper response when determining version... Are you sure this server is running SMB?");
return;
}
int sizeOfHeader = Marshal.SizeOf(header);
SMB_COM_SESSION_SETUP_ANDX_RESPONSE andxr = SMB_AndxResponseFromBytes(res.Skip(sizeOfHeader).ToArray());
int byteCount = andxr.ByteCount;
int sizeOfAndxr = Marshal.SizeOf(andxr);
byte[] data = res.Skip(sizeOfHeader + sizeOfAndxr + 1).ToArray().Take(byteCount).ToArray(); //The 1 is for Padding- This could become a problem
string hexString = BitConverter.ToString(data).Replace("-00-00-00-", "&"); //The SMB data is split using 3 0x00 bytes, these are changed to an '&' for easier split
string[] hexStringSplit = hexString.Split('&');
for (int i = 0; i < 3; i++)
{
StringBuilder strbuilder = new StringBuilder();
string[] charArray = hexStringSplit[i].Split('-');
foreach (string chars in charArray)
{
int value = Convert.ToInt32(chars, 16);
char charValue = (char)value;
if (charValue != 0)
{
strbuilder.Append(charValue);
}
}
if (i == 0)
{
Console.WriteLine("Native OS: " + strbuilder.ToString());
}
else if (i == 1)
{
Console.WriteLine("Native LAN Manager: " + strbuilder.ToString());
}
else if (i == 2)
{
Console.WriteLine("Domain: " + strbuilder.ToString());
}
}
}
