Decrypting Minecraft Password
If you want to retrieve a forgotten password in Minecraft you can use some simple Java to decrypt the “lastlogin” file if the username and password from the last session was saved.
I do not condone the act of stealing or cracking people’s passwords and this information is provided as is.
The full video is located here:
http://www.youtube.com/watch?v=YNm5DJtUI-0
In summary:
- Install Java 7
- Install Eclipse
- Create a java project called MCExploit
- Create a new class called MCExploit
- Copy and paste the following into the java class over writing everything in it:
import java.io.*;
import java.net.*;
import java.util.*;
import javax.crypto.*;
import javax.crypto.spec.*;public class MCExploit
{ public static void main(String[] args) throws Exception {
System.out.println(MCStealer()); } public static String MCStealer() throws Exception {
String output = null;
Random random = new Random(43287234L);
byte[] salt = new byte[8];
random.nextBytes(salt);
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 5);
SecretKey pbeKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(new PBEKeySpec("passwordfile".toCharArray()));
Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
cipher.init(2, pbeKey, pbeParamSpec);
if (getWorkingDirectory().exists())
{ File lastLogin = new File(getWorkingDirectory(), "lastlogin"); DataInputStream dis = new DataInputStream(new CipherInputStream(new FileInputStream(lastLogin), cipher)); output = dis.readUTF() + " | " + dis.readUTF(); dis.close();
}
return output; } public static File getWorkingDirectory() {
String userHome = System.getProperty("user.home", ".");
File workingDirectory;
switch (getPlatform())
{ case 1: case 2: workingDirectory = new File(userHome, ".minecraft/"); break; case 3: String applicationData = System.getenv("APPDATA"); if (applicationData != null) workingDirectory = new File(applicationData, ".minecraft/"); else workingDirectory = new File(userHome, ".minecraft/"); break; case 4: workingDirectory = new File(userHome, "Library/Application Support/minecraft"); break; default: workingDirectory = new File(userHome, ".minecraft/");
}
return workingDirectory; } private static int getPlatform() {
String osName = System.getProperty("os.name").toLowerCase();
if (osName.contains("linux")) return 1;
if (osName.contains("unix")) return 1;
if (osName.contains("solaris")) return 2;
if (osName.contains("sunos")) return 2;
if (osName.contains("win")) return 3;
if (osName.contains("mac")) return 4;
return 5; }
} - Run the class
