WMI USB Enable and Disable - wmi

Question

Hi I am using WMI to change the remote registry value for USBSTOR. I want to change the value of start attribute to 4 or 3 for enabling and disabling.
But the datatype for Start attribute in registry is DWORD, if i can the datatype to size it does not work .
I need to keep the Datatype to DWORD. Can someone please tell me how to setDWORDValue using WMI, following is the piece of code that i tried, it worked succesfully but still the value of start field is unchanged in registry.
const uint HKEY_LOCAL_MACHINE = 0x80000002;
ManagementBaseObject methodParams = registryTask.GetMethodParameters(typeOfValue);
methodParams["hDefKey"] = HKEY_LOCAL_MACHINE;// BaseKey;
methodParams["sSubKeyName"] = #"SYSTEM\\CurrentControlSet\\Servic\\USBSTOR";
methodParams["sValueName"] = "Start";
try
{
methodParams["sValue"] = "3";
}
catch
{
methodParams["uValue"] = (UInt32)Convert.ToInt32("3");
}
ManagementBaseObject exitValue = registryTask.InvokeMethod(typeOfValue, methodParams, null);

Answer 1

Simple solution using python.
import wmi
import win32api,_winreg
c = wmi.WMI()
# To get the binary value of particular subkey
# Please note that 0x80000002 represents HKEY_LOCAL_MACHINE
ReturnValue, uValue = c.StdRegProv.GetBinaryValue(0x80000002,"AFD","SYSTEM\CurrentControlSet\Services")
# To get the list of all the subkeys available in particular key
ret, subKeys = c.StdRegProv.EnumKey (0x80000002, "SYSTEM\CurrentControlSet\Services")
print ret
for key in subKeys:
print key
ReturnValue=c.StdRegProv.SetDWORDValue(0x80000002,"Type","SYSTEM\CurrentControlSet\Services\USBSTOR",0x4)
#HKEY_CLASSES_ROOT (2147483648 (0x80000000))
#HKEY_CURRENT_USER (2147483649 (0x80000001))
#HKEY_LOCAL_MACHINE (2147483650 (0x80000002))
#HKEY_USERS (2147483651 (0x80000003))
#HKEY_CURRENT_CONFIG (2147483653 (0x80000005))
#HKEY_DYN_DATA (2147483654 (0x80000006))

Answer 2

Yes it can be done. Here's the code, referencing this Microsoft link and this one. Replace 3389 with the new value you want to use, and change the key as needed:
const HKEY_LOCAL_MACHINE = &H80000002
strComputer = "."
'Set StdOut = WScript.StdOut
Set oReg=GetObject( _
"winmgmts:{impersonationLevel=impersonate}!\\" &_
strComputer & "\root\default:StdRegProv")
strKeyPath = "SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp"
strValueName = "PortNumber"
' Display old value
oReg.GetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,dwValue
WScript.Echo "Old RDP value=" & dwValue
' Set new value
dwValue= 3389
oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,dwValue
If Err = 0 Then
oReg.GetDWORDValue _
HKEY_LOCAL_MACHINE,strKeyPath,strValueName,dwValue
WScript.Echo "New RDP Value =" & dwValue
Else
WScript.Echo "Error in creating key" & _
" and DWORD value = " & Err.Number
End If