USB protection script

LowKey · December 4, 2007

Can anyone offer some help as far as creating a script to ask for a password, and if said password is false, lock the USB device to prevent changes and/or viewing? I've entertained a few ideas, such as moving files to a temporary folder, ejecting the USB device, and hiding the files, but all of them have a flaw, be it the fact that I cannot code it, or the method isn't very effective. Any help would be appreciated. I've already got the GUI and everything. Thanks!

weaponx · December 4, 2007

I did something similar many ages ago when AutoIt 3.1.1 was first released. I want to warn you that this is the first script I ever wrote.

Basically I worked at a company that didn't allow employees to bring in non-company usb devices and they needed a way to "whitelist" devices, and it also had to work remotely.

Description:

This will display a gui containing a list of all the existing USB devices on your system. Removing an item will disable it immediately. You can also "unlock" the registry entries that allow a new device to be plugged in.

Step 1: Run as administrator

Step 2: Click "Unlock" to allow a new device to be added

Step 3: Plug in the new device

Step 4: After drivers finiish installing, click "Lock"

P.S. A strange side effect was that the device would only work on the same port is was originally plugged into.

This relys upon:

-psexec.exe for remote functions

-Devcon.exe to force restart of usb devices

-setacl.exe to perform the locking on the usb registry entries

#cs ----------------------------------------------------------------------------
AutoIt Version: 3.1.1 (tested 3.2.8.1)
Language:       English
Platform:       Win9x / NT
Author:         WeaponX (ghostofagoodthing@gmail.com)

Script Function:
    Remote / Local USB Configuration.

#CE ----------------------------------------------------------------------------

; ----------------------------------------------------------------------------
; Dim variables
; ----------------------------------------------------------------------------

#include <GUIConstants.au3>
Dim $cname
Dim $machinelbl
Dim $installdir
Dim $label
Dim $mylist
Dim $btnremove
Dim $btnrefresh
Dim $btnlock
Dim $keynum
Dim $splitkeynum
Dim $usbhid[30][2]
Dim $chkcmd
Dim $usbroot
Dim $locktest
Dim $required[3] = ["devcon.exe", "psexec.exe", "SetACL.exe"]
Dim $x

;Default window mode
$console = @SW_HIDE 

; ----------------------------------------------------------------------------
; Begin script
; ----------------------------------------------------------------------------

; Make sure required files exist
For $X = 0 to Ubound($required) - 1
    $filecheck = FileExists(@WorkingDir & "\" & $required[$X])
    If $filecheck = 0 Then
        MsgBox(0, "File missing", "Missing required file: " & $required[$X], 0)
        Exit
    EndIf
Next

Switch $CmdLine[0]
    ;Open GUI for local machine
    Case 0
        $machinelbl = "Local"
        gui()

    ;Open GUI for remote machine
    Case 1
        $cname = $CmdLine[1] & "\"
        $machinelbl = $cname
        gui()

    ;Run without gui on remote machine
    Case 2
        $cname = $CmdLine[1] & "\"
        $machinelbl = $cname
        
        ;Display command progress
        $console = @SW_SHOWDEFAULT
        Switch $CmdLine[2]
            Case "lock"
                lock()
            Case "unlock"
                unlock()
            Case "enable"
                service($cname, 2)
            Case "disable"
                service($cname, 4)
        EndSwitch
EndSwitch

;Must be declared here and within gui()
$usbroot = $cname & "hklm\system\currentcontrolset\enum\usb"
;$installdir = RegRead ( "hklm\SOFTWARE\USBConfig","")
;if @error = 1 then
;$installdir = @WorkingDir
;endif

; Generate interface
Func gui() 
    $usbroot = $cname & "hklm\system\currentcontrolset\enum\usb"
    ; generate window with title
    GUICreate("USB Config", 220, 340) 
    ; will display an empty dialog box
    GUISetState(@SW_SHOW)      
    $label = GUICtrlCreateLabel($machinelbl, 10, 5, 200)
    GUICtrlSetFont(-1, 12)
    GUICtrlSetStyle(-1, $SS_CENTER)
    $mylist = GUICtrlCreateList("", 10, 30, 200, 200)
    $btnremove = GUICtrlCreateButton("Remove", 10, 230, 75, 25)
    $btnrefresh = GUICtrlCreateButton("Refresh", 10, 260, 75, 25)
    $btnlock = GUICtrlCreateButton("Lock", 135, 230, 75, 25)
    $chkcmd = GUICtrlCreateCheckbox("Show console windows", 10, 290)
    lockcheck()
    usblist()
EndFunc   ;==>gui

; Attempt to write to USB registry key
Func lockcheck() 
    $locktest = RegWrite($cname & "hklm\system\currentcontrolset\enum\usb", "Status", "REG_SZ", "Unlocked")
    If $locktest = 1 Then
        GUICtrlSetData($btnlock, "Lock")
        GUICtrlSetData($label, $machinelbl & " unlocked")
    Else
        GUICtrlSetData($btnlock, "Unlock")
        GUICtrlSetData($label, $machinelbl & " locked")
    EndIf
EndFunc   ;==>lockcheck

; Populate list box with generic device name
Func usblist() 
    $usbdevice = ""
    $usbdesc = ""
    $keynum = 1
    GUICtrlSetData($mylist, "")
    While 1
        $usbdevice = RegEnumKey($usbroot, $keynum)
        If @error = -1 Then ExitLoop
        $usbsubkey = RegEnumKey($usbroot & "\" & $usbdevice, 1)
        $usbdesc = RegRead($usbroot & "\" & $usbdevice & "\" & $usbsubkey, "DeviceDesc")
        $usbhid[$keynum][0] = $usbdevice
        $usbhid[$keynum][1] = $usbdesc
        GUICtrlSetData($mylist, $keynum & " " & $usbdesc & "|")
        $keynum = $keynum + 1
    WEnd
EndFunc   ;==>usblist

; Restart USB hubs to detect new devices, stop deleted devices
Func refresh() 
    If $cname = "" Then
        ; Run locally
        RunWait('devcon.exe restart usb*', @WorkingDir, $console)
    Else
        ; Run remotely
        RunWait('psexec.exe ' & $cname & ' -c -s devcon.exe restart usb*', @WorkingDir, $console)
    EndIf
EndFunc   ;==>refresh

; Disallow addition of new devices
Func lock()    
    RunWait('SetACL.exe -on "' & $cname & 'hklm\system\currentcontrolset\enum\usb" -ot reg -actn ace -ace "n:administrators;p:read" -ace "n:everyone;p:read" -actn clear -clr "dacl,sacl" -log "' & @WorkingDir & '\usbconfig.log"', @WorkingDir, $console)
EndFunc   ;==>lock

; Allow addition of new devices
Func unlock() 
    RunWait('SetACL.exe -on "' & $cname & 'hklm\system\currentcontrolset\enum\usb" -ot reg -actn ace -ace "n:administrators;p:full" -ace "n:everyone;p:read" -actn clear -clr "dacl,sacl" -log "' & @WorkingDir & '\usbconfig.log"', @WorkingDir, $console)
EndFunc   ;==>unlock

; Enable / Disable USB service
Func service($cname, $starttype) 
    RegWrite($cname & "hklm\system\currentcontrolset\services\usbehci", "Start", "REG_DWORD", $starttype)
    RegWrite($cname & "hklm\system\currentcontrolset\services\usbhub", "Start", "REG_DWORD", $starttype)
    RegWrite($cname & "hklm\system\currentcontrolset\services\usbstor", "Start", "REG_DWORD", $starttype)
    RegWrite($cname & "hklm\system\currentcontrolset\services\usbuhci", "Start", "REG_DWORD", $starttype)
    If $starttype = 2 Then
        MsgBox(0, "Enable", $cname & " Enabled", 3)
    ElseIf $starttype = 4 Then
        MsgBox(0, "Disabled", $cname & " Disabled", 3)
    EndIf
EndFunc   ;==>service

While 1
    $msg = GUIGetMsg()
    Switch $msg
        ; Click Remove button
        Case $btnremove
            $splitkeynum = StringSplit(GUICtrlRead($mylist), " ")
            $response = MsgBox(1, "", "Remove " & $usbhid[$splitkeynum[1]][2] & "?")
            If $response = 1 Then
                unlock()
                RegDelete($usbroot & "\" & $usbhid[$splitkeynum[1]][1])
                lock()
                refresh()
                lockcheck()
                MsgBox(0, "", "Device removed.", 3)
            EndIf

        ; Click Refresh button
        Case $btnrefresh
            refresh()
            lockcheck()
            usblist()
            MsgBox(0, "", "USB Refreshed", 3)

        ; Click Lock / Unlock button
        Case $btnlock            
            If $locktest = 1 Then
                lock()
            ElseIf $locktest = 0 Then
                unlock()
            EndIf
            lockcheck()

        ; Click Checkbox, update variables immediately
        Case $chkcmd
            Switch GUICtrlRead($chkcmd)
                Case 1
                    $console = @SW_SHOWDEFAULT
                Case 4
                    $console = @SW_HIDE
            EndSwitch
        
        Case $GUI_EVENT_CLOSE
            ExitLoop
            
    EndSwitch
WEnd

EDIT: Cleaned up comments and a few case statements

Edited December 4, 2007 by weaponx

Valuater · December 4, 2007

I want to warn you that this is the first script I ever wrote.

Damn Nice for a first script... weapon!

8)

Edited December 4, 2007 by Valuater

weaponx · December 4, 2007

Thanks. I even wrote an install / uninstall package for it that has all the required files rolled into it. These are classic!

Install USBConfig:

; ----------------------------------------------------------------------------
;
; AutoIt Version: 3.0
; Language:       English
; Platform:       Win9x / NT
; Author:         A.N.Other 
;
; Script Function:
;   USBConfig Installer / Uninstaller
;
; ----------------------------------------------------------------------------


; ----------------------------------------------------------------------------
; Set up our defaults
; ----------------------------------------------------------------------------

;AutoItSetOption("MustDeclareVars", 1)
;AutoItSetOption("MouseCoordMode", 0)
;AutoItSetOption("PixelCoordMode", 0)
;AutoItSetOption("RunErrorsFatal", 0)
;AutoItSetOption("TrayIconDebug", 1)
;AutoItSetOption("WinTitleMatchMode", 4)


; ----------------------------------------------------------------------------
; Script Start
; ----------------------------------------------------------------------------

$response = MsgBox(1, "Install", "Install USBConfig?")
if $response = 2 then Exit
$installchk = RegRead ( "hklm\SOFTWARE\USBConfig","")
if @error <> 1 then
MsgBox(0, "", "Already installed in: " & $installchk, 3)
Exit
endif
$installdir = InputBox ( "Installation folder", "Target installation folder:", @ProgramFilesDir & "\USBConfig\")
if @error = 1 then Exit
RegWrite ( "hklm\SOFTWARE\USBConfig","", "REG_SZ", $installdir )
RegWrite ( "hklm\SOFTWARE\Classes\Network\Type\2\shell\USBConfig","", "REG_SZ", "USB Config" )
RegWrite ( "hklm\SOFTWARE\Classes\Network\Type\2\shell\USBConfig\command","", "REG_SZ", $installdir & "usbconfig.exe %d" )
DirCreate ( $installdir )
FileInstall("c:\USBConfig\SetACL.exe", $installdir & "SetACL.exe")
FileInstall("c:\USBConfig\psexec.exe", $installdir & "psexec.exe")
FileInstall("c:\USBConfig\devcon.exe", $installdir & "devcon.exe")
FileInstall("c:\USBConfig\USBConfig.exe", $installdir & "USBConfig.exe")
FileInstall("c:\USBConfig\UninstallUSBConfig.exe", $installdir & "UninstallUSBConfig.exe")
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weaponx · December 4, 2007

You want to know the coolest part though?

I used the combination of psexec and devcon to stop the USB hubs remotely, since I had admin rights I would stop my neighbors USB mouse + keyboard just to eff with them.

GEOSoft · December 4, 2007

@WeaponX

You have a devious mindset.

LowKey · December 5, 2007

Awesome. I could use some of this code. The main thing is, is the script will need to be run from the USB drive with an Autorun.inf file.

weaponx · December 5, 2007

Awesome. I could use some of this code. The main thing is, is the script will need to be run from the USB drive with an Autorun.inf file.

That won't get you very far. If someone steals your flash drive the only thing they will need to get your files is to disable autorun.

You should be using a thumb drive with a lock switch on it so everything is encrypted.

Edited December 5, 2007 by weaponx

SkinnyWhiteGuy · December 5, 2007

Or do what I do, and use Truecrypt. It works off a thumb drive (with Admin access), and you have to have the password to access the files (as a mounted drive somewhere else). Doesn't prevent it from being seen, but with some clever naming, it could be overlooked.

LowKey · December 5, 2007

Its not so much theft I'm worried about. People often ask to borrow the drive to put pictures, etc. on and move it to their computer (no LAN here), so I'm always a bit wary as to lending it out. I just wanna keep folk from looking at what I dont want them to. Turning off autorun isn't an option on these computers. The computers we use are very restricted and on student accounts, no chance of (the typical user) getting admin access.

Edited December 5, 2007 by LowKey

weaponx · December 5, 2007

No LAN?!?!?? That can't be good for productivity. Are you guys still using floppy disks and 3dFx Voodoo 1's???

LowKey · December 12, 2007

Not quite, but close x.x; its amazing we've got XP OSs on these dinosaurs. 128 mb ram x.x

DW1 · December 12, 2007

OMG no LAN? no internetz?

@weaponX, what are you trying to say about my voodoo card? LOL

schilbiz · December 12, 2007

You guys are dating yourselves.. but then again I remember when I was all hyped about Voodoo 3dfx video cards..

DW1 · December 12, 2007

You guys are dating yourselves.. but then again I remember when I was all hyped about Voodoo 3dfx video cards..

LOL, and I'm only 22

weaponx · December 12, 2007

Dating ourselves? What ?? lol

I'm only 25 but I definitely had a a pair of Voodoo 2's in SLI.

John117 · December 12, 2007

I remember the first time I saw Doom on a Voodoo 3dfx video card. WOW!

btw my first script added a pic to a gui I think? -dont worry! one day, you too, will get there ^_^

LowKey · December 13, 2007

my first AutoIt script was...if i'm not mistaken, a Notepad clone...wow, i feel noobish =P As for dating myself...anyone remember MUDding? I could go for some Nuclear War, now that I think about it.

EDIT: Aha, my next project! Full functional Telnet client!

Edited December 13, 2007 by LowKey

schilbiz · December 13, 2007

@ danwilli and weaponx: Yea, I was just messing with you, I am in my 20's as well. Still considered "young" in my book.

@ weaponx - Voodoo 2's supported SLI? wow where was I.. probably too absorbed in trying to figure out how to hax my mem via emm386/memmaker so I could play quest for glory. @(&*)@ conventional memory..

USB protection script

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