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Chirishman/Listener.ps1

Created May 28, 2019 23:56
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PowerShell Keypress Listener
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Listener.ps1
# Currently using two c# types because I can't figure out how to capture the return of the big/first one listed here.
# Any help on that is appreciated.
add-type @'
using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace GlobalLowLevelHooks
{
/// <summary>
/// Class for intercepting low level keyboard hooks
/// </summary>
public class KeyboardHook
{
/// <summary>
/// Virtual Keys
/// </summary>
public enum VKeys
{
// Losely based on http://www.pinvoke.net/default.aspx/Enums/VK.html
LBUTTON = 0x01, // Left mouse button
RBUTTON = 0x02, // Right mouse button
CANCEL = 0x03, // Control-break processing
MBUTTON = 0x04, // Middle mouse button (three-button mouse)
XBUTTON1 = 0x05, // Windows 2000/XP: X1 mouse button
XBUTTON2 = 0x06, // Windows 2000/XP: X2 mouse button
// 0x07 // Undefined
BACK = 0x08, // BACKSPACE key
TAB = 0x09, // TAB key
// 0x0A-0x0B, // Reserved
CLEAR = 0x0C, // CLEAR key
RETURN = 0x0D, // ENTER key
// 0x0E-0x0F, // Undefined
SHIFT = 0x10, // SHIFT key
CONTROL = 0x11, // CTRL key
MENU = 0x12, // ALT key
PAUSE = 0x13, // PAUSE key
CAPITAL = 0x14, // CAPS LOCK key
KANA = 0x15, // Input Method Editor (IME) Kana mode
HANGUL = 0x15, // IME Hangul mode
// 0x16, // Undefined
JUNJA = 0x17, // IME Junja mode
FINAL = 0x18, // IME final mode
HANJA = 0x19, // IME Hanja mode
KANJI = 0x19, // IME Kanji mode
// 0x1A, // Undefined
ESCAPE = 0x1B, // ESC key
CONVERT = 0x1C, // IME convert
NONCONVERT = 0x1D, // IME nonconvert
ACCEPT = 0x1E, // IME accept
MODECHANGE = 0x1F, // IME mode change request
SPACE = 0x20, // SPACEBAR
PRIOR = 0x21, // PAGE UP key
NEXT = 0x22, // PAGE DOWN key
END = 0x23, // END key
HOME = 0x24, // HOME key
LEFT = 0x25, // LEFT ARROW key
UP = 0x26, // UP ARROW key
RIGHT = 0x27, // RIGHT ARROW key
DOWN = 0x28, // DOWN ARROW key
SELECT = 0x29, // SELECT key
PRINT = 0x2A, // PRINT key
EXECUTE = 0x2B, // EXECUTE key
SNAPSHOT = 0x2C, // PRINT SCREEN key
INSERT = 0x2D, // INS key
DELETE = 0x2E, // DEL key
HELP = 0x2F, // HELP key
KEY_0 = 0x30, // 0 key
KEY_1 = 0x31, // 1 key
KEY_2 = 0x32, // 2 key
KEY_3 = 0x33, // 3 key
KEY_4 = 0x34, // 4 key
KEY_5 = 0x35, // 5 key
KEY_6 = 0x36, // 6 key
KEY_7 = 0x37, // 7 key
KEY_8 = 0x38, // 8 key
KEY_9 = 0x39, // 9 key
// 0x3A-0x40, // Undefined
KEY_A = 0x41, // A key
KEY_B = 0x42, // B key
KEY_C = 0x43, // C key
KEY_D = 0x44, // D key
KEY_E = 0x45, // E key
KEY_F = 0x46, // F key
KEY_G = 0x47, // G key
KEY_H = 0x48, // H key
KEY_I = 0x49, // I key
KEY_J = 0x4A, // J key
KEY_K = 0x4B, // K key
KEY_L = 0x4C, // L key
KEY_M = 0x4D, // M key
KEY_N = 0x4E, // N key
KEY_O = 0x4F, // O key
KEY_P = 0x50, // P key
KEY_Q = 0x51, // Q key
KEY_R = 0x52, // R key
KEY_S = 0x53, // S key
KEY_T = 0x54, // T key
KEY_U = 0x55, // U key
KEY_V = 0x56, // V key
KEY_W = 0x57, // W key
KEY_X = 0x58, // X key
KEY_Y = 0x59, // Y key
KEY_Z = 0x5A, // Z key
LWIN = 0x5B, // Left Windows key (Microsoft Natural keyboard)
RWIN = 0x5C, // Right Windows key (Natural keyboard)
APPS = 0x5D, // Applications key (Natural keyboard)
// 0x5E, // Reserved
SLEEP = 0x5F, // Computer Sleep key
NUMPAD0 = 0x60, // Numeric keypad 0 key
NUMPAD1 = 0x61, // Numeric keypad 1 key
NUMPAD2 = 0x62, // Numeric keypad 2 key
NUMPAD3 = 0x63, // Numeric keypad 3 key
NUMPAD4 = 0x64, // Numeric keypad 4 key
NUMPAD5 = 0x65, // Numeric keypad 5 key
NUMPAD6 = 0x66, // Numeric keypad 6 key
NUMPAD7 = 0x67, // Numeric keypad 7 key
NUMPAD8 = 0x68, // Numeric keypad 8 key
NUMPAD9 = 0x69, // Numeric keypad 9 key
MULTIPLY = 0x6A, // Multiply key
ADD = 0x6B, // Add key
SEPARATOR = 0x6C, // Separator key
SUBTRACT = 0x6D, // Subtract key
DECIMAL = 0x6E, // Decimal key
DIVIDE = 0x6F, // Divide key
F1 = 0x70, // F1 key
F2 = 0x71, // F2 key
F3 = 0x72, // F3 key
F4 = 0x73, // F4 key
F5 = 0x74, // F5 key
F6 = 0x75, // F6 key
F7 = 0x76, // F7 key
F8 = 0x77, // F8 key
F9 = 0x78, // F9 key
F10 = 0x79, // F10 key
F11 = 0x7A, // F11 key
F12 = 0x7B, // F12 key
F13 = 0x7C, // F13 key
F14 = 0x7D, // F14 key
F15 = 0x7E, // F15 key
F16 = 0x7F, // F16 key
F17 = 0x80, // F17 key
F18 = 0x81, // F18 key
F19 = 0x82, // F19 key
F20 = 0x83, // F20 key
F21 = 0x84, // F21 key
F22 = 0x85, // F22 key, (PPC only) Key used to lock device.
F23 = 0x86, // F23 key
F24 = 0x87, // F24 key
// 0x88-0X8F, // Unassigned
NUMLOCK = 0x90, // NUM LOCK key
SCROLL = 0x91, // SCROLL LOCK key
// 0x92-0x96, // OEM specific
// 0x97-0x9F, // Unassigned
LSHIFT = 0xA0, // Left SHIFT key
RSHIFT = 0xA1, // Right SHIFT key
LCONTROL = 0xA2, // Left CONTROL key
RCONTROL = 0xA3, // Right CONTROL key
LMENU = 0xA4, // Left MENU key
RMENU = 0xA5, // Right MENU key
BROWSER_BACK = 0xA6, // Windows 2000/XP: Browser Back key
BROWSER_FORWARD = 0xA7, // Windows 2000/XP: Browser Forward key
BROWSER_REFRESH = 0xA8, // Windows 2000/XP: Browser Refresh key
BROWSER_STOP = 0xA9, // Windows 2000/XP: Browser Stop key
BROWSER_SEARCH = 0xAA, // Windows 2000/XP: Browser Search key
BROWSER_FAVORITES = 0xAB, // Windows 2000/XP: Browser Favorites key
BROWSER_HOME = 0xAC, // Windows 2000/XP: Browser Start and Home key
VOLUME_MUTE = 0xAD, // Windows 2000/XP: Volume Mute key
VOLUME_DOWN = 0xAE, // Windows 2000/XP: Volume Down key
VOLUME_UP = 0xAF, // Windows 2000/XP: Volume Up key
MEDIA_NEXT_TRACK = 0xB0,// Windows 2000/XP: Next Track key
MEDIA_PREV_TRACK = 0xB1,// Windows 2000/XP: Previous Track key
MEDIA_STOP = 0xB2, // Windows 2000/XP: Stop Media key
MEDIA_PLAY_PAUSE = 0xB3,// Windows 2000/XP: Play/Pause Media key
LAUNCH_MAIL = 0xB4, // Windows 2000/XP: Start Mail key
LAUNCH_MEDIA_SELECT = 0xB5, // Windows 2000/XP: Select Media key
LAUNCH_APP1 = 0xB6, // Windows 2000/XP: Start Application 1 key
LAUNCH_APP2 = 0xB7, // Windows 2000/XP: Start Application 2 key
// 0xB8-0xB9, // Reserved
OEM_1 = 0xBA, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the ';:' key
OEM_PLUS = 0xBB, // Windows 2000/XP: For any country/region, the '+' key
OEM_COMMA = 0xBC, // Windows 2000/XP: For any country/region, the ',' key
OEM_MINUS = 0xBD, // Windows 2000/XP: For any country/region, the '-' key
OEM_PERIOD = 0xBE, // Windows 2000/XP: For any country/region, the '.' key
OEM_2 = 0xBF, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '/?' key
OEM_3 = 0xC0, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '`~' key
// 0xC1-0xD7, // Reserved
// 0xD8-0xDA, // Unassigned
OEM_4 = 0xDB, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '[{' key
OEM_5 = 0xDC, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '\|' key
OEM_6 = 0xDD, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the ']}' key
OEM_7 = 0xDE, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the 'single-quote/double-quote' key
OEM_8 = 0xDF, // Used for miscellaneous characters; it can vary by keyboard.
// 0xE0, // Reserved
// 0xE1, // OEM specific
OEM_102 = 0xE2, // Windows 2000/XP: Either the angle bracket key or the backslash key on the RT 102-key keyboard
// 0xE3-E4, // OEM specific
PROCESSKEY = 0xE5, // Windows 95/98/Me, Windows NT 4.0, Windows 2000/XP: IME PROCESS key
// 0xE6, // OEM specific
PACKET = 0xE7, // Windows 2000/XP: Used to pass Unicode characters as if they were keystrokes. The VK_PACKET key is the low word of a 32-bit Virtual Key value used for non-keyboard input methods. For more information, see Remark in KEYBDINPUT, SendInput, WM_KEYDOWN, and WM_KEYUP
// 0xE8, // Unassigned
// 0xE9-F5, // OEM specific
ATTN = 0xF6, // Attn key
CRSEL = 0xF7, // CrSel key
EXSEL = 0xF8, // ExSel key
EREOF = 0xF9, // Erase EOF key
PLAY = 0xFA, // Play key
ZOOM = 0xFB, // Zoom key
NONAME = 0xFC, // Reserved
PA1 = 0xFD, // PA1 key
OEM_CLEAR = 0xFE // Clear key
}
/// <summary>
/// Internal callback processing function
/// </summary>
private delegate IntPtr KeyboardHookHandler(int nCode, IntPtr wParam, IntPtr lParam);
private KeyboardHookHandler hookHandler;
/// <summary>
/// Function that will be called when defined events occur
/// </summary>
/// <param name="key">VKeys</param>
public delegate void KeyboardHookCallback(VKeys key);
#region Events
public event KeyboardHookCallback KeyDown;
public event KeyboardHookCallback KeyUp;
#endregion
/// <summary>
/// Hook ID
/// </summary>
private IntPtr hookID = IntPtr.Zero;
/// <summary>
/// Install low level keyboard hook
/// </summary>
public void Install()
{
hookHandler = HookFunc;
hookID = SetHook(hookHandler);
}
/// <summary>
/// Remove low level keyboard hook
/// </summary>
public void Uninstall()
{
UnhookWindowsHookEx(hookID);
}
/// <summary>
/// Registers hook with Windows API
/// </summary>
/// <param name="proc">Callback function</param>
/// <returns>Hook ID</returns>
private IntPtr SetHook(KeyboardHookHandler proc)
{
using (ProcessModule module = Process.GetCurrentProcess().MainModule)
return SetWindowsHookEx(13, proc, GetModuleHandle(module.ModuleName), 0);
}
/// <summary>
/// Default hook call, which analyses pressed keys
/// </summary>
private IntPtr HookFunc(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
int iwParam = wParam.ToInt32();
if ((iwParam == WM_KEYDOWN || iwParam == WM_SYSKEYDOWN))
if (KeyDown != null)
KeyDown((VKeys)Marshal.ReadInt32(lParam));
if ((iwParam == WM_KEYUP || iwParam == WM_SYSKEYUP))
if (KeyUp != null)
KeyUp((VKeys)Marshal.ReadInt32(lParam));
}
return CallNextHookEx(hookID, nCode, wParam, lParam);
}
/// <summary>
/// Destructor. Unhook current hook
/// </summary>
~KeyboardHook()
{
Uninstall();
}
/// <summary>
/// Low-Level function declarations
/// </summary>
#region WinAPI
private const int WM_KEYDOWN = 0x100;
private const int WM_SYSKEYDOWN = 0x104;
private const int WM_KEYUP = 0x101;
private const int WM_SYSKEYUP = 0x105;
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, KeyboardHookHandler lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
#endregion
}
}
'@
$Signature = @'
[DllImport("user32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
public static extern short GetAsyncKeyState(int virtualKeyCode);
'@
Add-Type -MemberDefinition $Signature -Name 'Keypress' -Namespace Keytest
Register-ObjectEvent -InputObject $z -EventName KeyDown -SourceIdentifier GlobalHook -Action {if ([bool]([Keytest.Keypress]::GetAsyncKeyState(235) -eq -32767)){notepad.exe}}
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