Add a old code project

EagleEye.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BitCoinSharp" Version="0.2.166.49" />
+    <PackageReference Include="NBitcoin" Version="7.0.22" />
+    <PackageReference Include="System.Configuration.ConfigurationManager" Version="7.0.0" />
+  </ItemGroup>
+
+</Project>

EagleEye.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.4.33122.133
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EagleEye", "EagleEye.csproj", "{79EE707A-955B-44C2-9899-592B02DF5FB1}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{79EE707A-955B-44C2-9899-592B02DF5FB1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{79EE707A-955B-44C2-9899-592B02DF5FB1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{79EE707A-955B-44C2-9899-592B02DF5FB1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{79EE707A-955B-44C2-9899-592B02DF5FB1}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {20BCCC0C-8D9E-4DDB-94A9-743E8F673BAB}
+	EndGlobalSection
+EndGlobal

Program.cs

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+using BitCoinSharp;
+using NBitcoin;
+using System.Numerics;
+using System.Xml.Linq;
+
+namespace EagleEye
+{
+    internal class Program
+    {
+        public static string search;
+        public static BigInteger point = BigInteger.Zero;
+        public static Wallet wallet = null;
+        static void Main(string[] args)
+        {
+            //args = new string[] { "1HLoD9E4SDFFPDiYfNYnkBLQ85Y51J3Zb1" };
+
+            Console.WriteLine("\n \n* WELCOME TO EAGLE EYE *\n \n[ Checking for required parameters ]");
+            if(args.Length >= 1)
+            {
+                Console.WriteLine($"[ Scanning for {args[0]} ]");
+                search = args[0];
+                wallet = new Wallet(NetworkParameters.ProdNet());
+            }else
+            {
+                if (!File.Exists("resume.bin"))
+                {
+
+                    Console.WriteLine($"[ Please provide the address to search for ]");
+                    return;
+                }
+                else Load();
+            }
+            Key privkey = new();
+            //byte[] bits = new byte[32];
+
+            bool bSearch = true;
+            BigInteger big = point;
+            if(search != "")
+            {
+                args = new string[] { search };
+            }
+
+            Console.WriteLine();
+            Console.WriteLine();
+
+            Console.CancelKeyPress += Console_CancelKeyPress;
+
+            int lastSave = 0;
+            while (bSearch)
+            {
+                byte[] bits = big.ToByteArray();
+                Array.Resize<byte>(ref bits, 32);
+                Array.Reverse(bits);
+                
+                
+                big++;
+                point = big;
+                //big.ToByteArray().CopyTo(bits, 0);
+
+                try
+                {
+                    privkey = new Key(bits);
+
+                }
+                catch
+                {
+                    continue;
+                }
+                string hex = string.Join("", bits.Select(b => string.Format("{0:X2}", b)));
+                //privkey = Key.Parse(hex, Network.Main);
+
+                BitcoinSecret btcpriv = privkey.GetWif(Network.Main);
+
+                BitcoinAddress legacy = btcpriv.PubKey.GetAddress(ScriptPubKeyType.Legacy, Network.Main);
+                BitcoinAddress segwit = btcpriv.PubKey.GetAddress(ScriptPubKeyType.Segwit, Network.Main);
+                BitcoinAddress segwit2 = btcpriv.PubKey.GetAddress(ScriptPubKeyType.SegwitP2SH, Network.Main);
+                BitcoinAddress taproot = btcpriv.PubKey.GetAddress(ScriptPubKeyType.TaprootBIP86, Network.Main);
+
+                if (args[0] == legacy.ToString() || args[0] == segwit.ToString() || args[0] == segwit2.ToString() || args[0] == taproot.ToString())
+                {
+                    Console.WriteLine($"\n\nPRIVATE KEY FOUND : {btcpriv}\n\n");
+                    //bSearch = false;
+                    Save();
+                }
+                else Console.Write($"\rSearching for private key [{btcpriv}] [{lastSave}] [{wallet.Keychain.Count}]   \r");
+
+                if (lastSave >= 2000)
+                {
+                    Save();
+                    lastSave = 0;
+                }
+                else lastSave++;
+                try
+                {
+
+                    Org.BouncyCastle.Math.BigInteger pk = new Org.BouncyCastle.Math.BigInteger(hex, 16);
+                    
+                    wallet.AddKey(new EcKey(pk));
+                }
+                catch { }
+            }
+        }
+
+        private static void Console_CancelKeyPress(object? sender, ConsoleCancelEventArgs e)
+        {
+            Console.WriteLine("Saving state...");
+            Save();
+            
+
+            Environment.Exit(0); 
+        }
+
+        private static void Save()
+        {
+            try
+            {
+                Thread tx = new Thread(() =>
+                {
+
+                    BinaryWriter bw = new BinaryWriter(new FileStream("resume.bin", FileMode.OpenOrCreate, FileAccess.ReadWrite));
+                    bw.Write(search);
+                    byte[] arr = point.ToByteArray();
+                    bw.Write(arr.Length);
+                    bw.Write(arr);
+                    try
+                    {
+
+                        FileInfo fi = new FileInfo("wallet.dat");
+                        wallet.SaveToFile(fi);
+                    }
+                    catch { }
+
+
+                    bw.Close();
+                });
+
+                tx.Start();
+            }
+            catch { }
+            
+        }
+
+        private static void Load()
+        {
+            BinaryReader br = new BinaryReader(new FileStream("resume.bin", FileMode.Open, FileAccess.Read));
+            search = br.ReadString();
+            point = new BigInteger(br.ReadBytes(br.ReadInt32()));
+
+            br.Close();
+
+            Console.WriteLine("[ Loaded saved state ]");
+
+            wallet = Wallet.LoadFromFile(new FileInfo("wallet.dat"));
+        }
+    }
+}