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keyemu.cs

@@ -0,0 +1,233 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+public static class KeyEmu {
+	static string charArr_payload = null;
+
+	public static void Main(String[] args){
+		parseArgs();
+	}
+
+	static void parseArgs() {
+		String[] args = Environment.GetCommandLineArgs();
+ 		for (int i = 1; i < args.Length - 1; i = i + 2) {
+ 			switch (args[i].ToLower()) {
+ 				case "-text":
+ 					if (args[i + 1].Length > 0){
+ 						charArr_payload = args[i + 1];
+ 						foreach (char c in charArr_payload){
+ 							string primary_charset_data = "abcdefghijklmnopqrstuvwxyz1234567890`-=[]\\;',./";
+ 							List<char> primary_charset_list = new List<char>();
+ 							primary_charset_list.AddRange(primary_charset_data);
+ 							if (primary_charset_list.Contains(c)){
+ 								SendFirstKey(c);
+ 							}else{
+								SendSecondKey(c);
+ 							}
+ 						}
+ 					}
+ 					Environment.Exit(2);
+ 					break;
+ 				case "-key":
+ 					if (args[i + 1] == "RETURN"){
+ 						SendScanCode(0x0D);
+ 					}
+ 					Environment.Exit(2);
+ 					break;
+ 				default:
+ 					Console.WriteLine("Wrong arguments");
+		   			Environment.Exit(4);
+		   			break;
+ 			}
+ 		}
+	} 
+
+    public enum InputType : uint {
+        INPUT_MOUSE = 0,
+        INPUT_KEYBOARD = 1,
+        INPUT_HARDWARE = 3
+    }
+
+    [Flags]
+    internal enum KEYEVENTF : uint
+    {
+        KEYDOWN = 0x0,
+        EXTENDEDKEY = 0x0001,
+        KEYUP = 0x0002,
+        SCANCODE = 0x0008,
+        UNICODE = 0x0004
+    }
+
+    [Flags]
+    internal enum MOUSEEVENTF : uint
+    {
+        ABSOLUTE = 0x8000,
+        HWHEEL = 0x01000,
+        MOVE = 0x0001,
+        MOVE_NOCOALESCE = 0x2000,
+        LEFTDOWN = 0x0002,
+        LEFTUP = 0x0004,
+        RIGHTDOWN = 0x0008,
+        RIGHTUP = 0x0010,
+        MIDDLEDOWN = 0x0020,
+        MIDDLEUP = 0x0040,
+        VIRTUALDESK = 0x4000,
+        WHEEL = 0x0800,
+        XDOWN = 0x0080,
+        XUP = 0x0100
+    }
+
+    // Master Input structure
+    [StructLayout(LayoutKind.Sequential)]
+    public struct lpInput {
+        internal InputType type;
+        internal InputUnion Data;
+        internal static int Size { get { return Marshal.SizeOf(typeof(lpInput)); } }            
+    }
+
+    // Union structure
+    [StructLayout(LayoutKind.Explicit)]
+    internal struct InputUnion {
+        [FieldOffset(0)]
+        internal MOUSEINPUT mi;
+        [FieldOffset(0)]
+        internal KEYBDINPUT ki;
+        [FieldOffset(0)]
+        internal HARDWAREINPUT hi;
+    }
+
+    // Input Types
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct MOUSEINPUT
+    {
+        internal int dx;
+        internal int dy;
+        internal int mouseData;
+        internal MOUSEEVENTF dwFlags;
+        internal uint time;
+        internal UIntPtr dwExtraInfo;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct KEYBDINPUT
+    {
+        internal short wVk;
+        internal short wScan;
+        internal KEYEVENTF dwFlags;
+        internal int time;
+        internal UIntPtr dwExtraInfo;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct HARDWAREINPUT
+    {
+        internal int uMsg;
+        internal short wParamL;
+        internal short wParamH;
+    }
+
+    private class unmanaged {
+        [DllImport("user32.dll", SetLastError = true)]
+        internal static extern uint SendInput (
+            uint cInputs, 
+            [MarshalAs(UnmanagedType.LPArray)]
+            lpInput[] inputs,
+            int cbSize
+        );
+
+        [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
+        public static extern short VkKeyScan(char ch);
+    }
+
+    internal static short VkKeyScan(char ch) {
+        return unmanaged.VkKeyScan(ch);
+    }
+
+    internal static uint SendInput(uint cInputs, lpInput[] inputs, int cbSize) {
+        return unmanaged.SendInput(cInputs, inputs, cbSize);
+    }
+
+    public static void SendScanCode(short scanCode) {
+        lpInput[] KeyInputs = new lpInput[1];
+        lpInput KeyInput = new lpInput();
+        // Generic Keyboard Event
+        KeyInput.type = InputType.INPUT_KEYBOARD;
+        KeyInput.Data.ki.wScan = 0;
+        KeyInput.Data.ki.time = 0;
+        KeyInput.Data.ki.dwExtraInfo = UIntPtr.Zero;
+
+
+        // Push the correct key
+        KeyInput.Data.ki.wVk = scanCode;
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYDOWN;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        // Release the key
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYUP;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        return;
+    }
+
+    public static void SendFirstKey(char ch) {
+        lpInput[] KeyInputs = new lpInput[1];
+        lpInput KeyInput = new lpInput();
+        // Generic Keyboard Event
+        KeyInput.type = InputType.INPUT_KEYBOARD;
+        KeyInput.Data.ki.wScan = 0;
+        KeyInput.Data.ki.time = 0;
+        KeyInput.Data.ki.dwExtraInfo = UIntPtr.Zero;
+
+        // Push the correct key
+        KeyInput.Data.ki.wVk = VkKeyScan(ch);
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYDOWN;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        // Release the key
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYUP;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        return;
+    }
+
+    public static void SendSecondKey(char ch) {
+        lpInput[] KeyInputs = new lpInput[1];
+        lpInput KeyInput = new lpInput();
+        // Generic Keyboard Event
+        KeyInput.type = InputType.INPUT_KEYBOARD;
+        KeyInput.Data.ki.wScan = 0;
+        KeyInput.Data.ki.time = 0;
+        KeyInput.Data.ki.dwExtraInfo = UIntPtr.Zero;
+
+        //Shift Down
+        KeyInput.Data.ki.wVk = 0x10;
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYDOWN;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        // Push the correct key
+        KeyInput.Data.ki.wVk = VkKeyScan(ch);
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYDOWN;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        // Release the key
+        KeyInput.Data.ki.wVk = 0x10;
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYUP;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        // Release the key
+        KeyInput.Data.ki.wVk = VkKeyScan(ch);
+        KeyInput.Data.ki.dwFlags = KEYEVENTF.KEYUP;
+        KeyInputs[0] = KeyInput;
+        SendInput(1, KeyInputs, lpInput.Size);
+
+        return;
+    }
+}