Добавьте файлы проекта.

MagnetExtractor.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.13.35931.197 d17.13
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MagnetExtractor", "MagnetExtractor\MagnetExtractor.csproj", "{911B8CAF-FF6E-4433-98D9-5068BBE3F37F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{911B8CAF-FF6E-4433-98D9-5068BBE3F37F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{911B8CAF-FF6E-4433-98D9-5068BBE3F37F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{911B8CAF-FF6E-4433-98D9-5068BBE3F37F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{911B8CAF-FF6E-4433-98D9-5068BBE3F37F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {99C83323-E6A2-4DCC-BCF8-BF7BFB0A0D49}
+	EndGlobalSection
+EndGlobal

MagnetExtractor/MagnetExtractor.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BencodeNET" Version="5.0.0" />
+  </ItemGroup>
+
+</Project>

MagnetExtractor/Program.cs

@@ -0,0 +1,134 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using BencodeNET.Objects;
+using BencodeNET.Parsing;
+using BencodeNET.Torrents;
+
+namespace TorrentToMagnet
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            if (args.Length != 1)
+            {
+                Console.WriteLine("Usage: TorrentToMagnet <path_to_torrent_file>");
+                return;
+            }
+
+            string torrentFilePath = args[0];
+
+            if (!File.Exists(torrentFilePath))
+            {
+                Console.WriteLine("File not found.");
+                return;
+            }
+
+            try
+            {
+                // Загружаем .torrent файл
+                var torrentData = File.ReadAllBytes(torrentFilePath);
+                var parser = new BencodeParser();
+                var torrent = parser.Parse<BDictionary>(torrentData);
+
+                // Извлекаем информацию для magnet-ссылки
+                var infoHash = GetInfoHash(torrent);
+                var name = GetName(torrent);
+                var trackers = GetTrackers(torrent);
+
+                // Формируем magnet-ссылку
+                string magnetLink = $"magnet:?xt=urn:btih:{infoHash}&dn={Uri.EscapeDataString(name)}";
+
+                // Добавляем трекеры в magnet-ссылку
+                foreach (var tracker in trackers)
+                {
+                    magnetLink += $"&tr={Uri.EscapeDataString(tracker)}";
+                }
+
+                Console.WriteLine("Magnet Link:");
+                Console.WriteLine(magnetLink);
+
+                // Спрашиваем пользователя, хочет ли он сохранить трекеры в файл
+                Console.WriteLine("Do you want to save the trackers to a file? (yes/no)");
+                string response = Console.ReadLine().Trim().ToLower();
+
+                if (response == "yes" || response == "y")
+                {
+                    Console.WriteLine("Enter the file name to save the trackers:");
+                    string fileName = Console.ReadLine().Trim();
+
+                    // Сохраняем трекеры в файл
+                    SaveTrackersToFile(trackers, fileName);
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("Error: " + ex.Message);
+            }
+        }
+
+        static string GetInfoHash(BDictionary torrent)
+        {
+            var info = torrent["info"] as BDictionary;
+            var infoBytes = info.EncodeAsBytes();
+            var sha1 = System.Security.Cryptography.SHA1.Create();
+            var hashBytes = sha1.ComputeHash(infoBytes);
+            return BitConverter.ToString(hashBytes).Replace("-", "").ToLower();
+        }
+
+        static string GetName(BDictionary torrent)
+        {
+            var info = torrent["info"] as BDictionary;
+            return info["name"].ToString();
+        }
+
+        static List<string> GetTrackers(BDictionary torrent)
+        {
+            var trackers = new List<string>();
+
+            // Извлекаем трекеры из announce
+            if (torrent.ContainsKey("announce"))
+            {
+                var announce = torrent["announce"].ToString();
+                trackers.Add(announce);
+            }
+
+            // Извлекаем трекеры из announce-list
+            if (torrent.ContainsKey("announce-list"))
+            {
+                var announceList = torrent["announce-list"] as BList;
+                foreach (var item in announceList)
+                {
+                    if (item is BList subList)
+                    {
+                        foreach (var subItem in subList)
+                        {
+                            trackers.Add(subItem.ToString());
+                        }
+                    }
+                    else
+                    {
+                        trackers.Add(item.ToString());
+                    }
+                }
+            }
+
+            return trackers;
+        }
+
+        static void SaveTrackersToFile(List<string> trackers, string filePath)
+        {
+            try
+            {
+                File.WriteAllLines(filePath, trackers);
+                Console.WriteLine($"Trackers saved to {filePath}");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Error saving trackers to file: {ex.Message}");
+            }
+        }
+    }
+}