Krystal

Next-generation JVM protection through virtualisation

Krystal revolutionises JVM app security by creating a virtualised execution environment. Your bytecode is transformed into a custom instruction set that executes within our native virtual machine, making reverse engineering and tampering extremely difficult. Supporting Java 8 to Java 23 and all JVM languages.

Complete virtualisation

Your code executes within our proprietary native virtual machine, completely obscuring program logic and making traditional analysis tools utterly ineffective.

Advanced anti-tamper

Built-in protection against JVM-level hooking, JVMTI, and JVM agents. Our native layer detects and prevents tampering attempts in real-time.

Easy deployment

Seamless integration with existing build pipelines. No code modifications, no native dependencies, no infrastructure changes required.

Excellent performance

Sophisticated optimisation and intelligent caching deliver near-native speed whilst maintaining great security throughout your application.

Revolutionary architecture

Krystal employs virtualisation tech to create an impenetrable barrier around your JVM app. Original bytecode is transformed into our own instruction set that only our virtual machine can interpret. This fundamental architectural shift renders conventional reverse engineering tools completely useless, as they can only observe the virtualisation layer, never the protected logic beneath..

Instruction Transformation

Standard JVM instructions are converted into Krystal's own instruction set:

iload_1 -> 0x7A2F

invokevirtual -> 0x4B8E

iadd -> 0x9C14

astore_2 -> 0x53AF

getstatic -> 0xE627

ireturn -> 0x1D93

These instructions are meaningless outside Krystal's native execution environment, creating an impenetrable barrier against analysis and tampering.

Before Protection

public class HelloWorld {
   public static void main(String[] args) {
       System.out.println("Hello, World!");
   }
}

After Protection

public class HelloWorld {
   static native void krystal_main_0x4A2B8F(String[] args);
   
   public static void main(String[] args) {
       krystal_main_0x4A2B8F(args);
   }
}

Original method logic now executes within Krystal's virtual machine, completely invisible to decompilers, debuggers, and other analysis tools.

Applications maintain full functionality and performance whilst gaining impenetrable protection against reverse engineering, tampering, and other modifications.