Introducing Computational Polymorphism

lx-poly fundamentally reimagines client-side protection by making the attack surface itself a moving target. Instead of protecting static code, we generate algorithmically distinct implementations that maintain identical functionality while presenting completely different signatures to reverse engineering attempts.

Our polymorphic engine operates across three critical layers where automation typically establishes fingerprints: JavaScript execution environment, WebAssembly compilation targets, and DOM structural patterns. By continuously rotating these implementation details, we force attackers to solve a different reverse engineering problem with each interaction.

JavaScript Virtual Machine Architecture

At the core of lx-poly lies a custom bytecode virtual machine that executes protection logic through dynamically generated instruction sets. Unlike traditional obfuscation that merely renames variables or reorders functions, our VM approach fundamentally alters the computational model.

Each deployment generates a unique opcode mapping using cryptographically seeded randomization. Operations that perform identical logical functions—such as string concatenation or arithmetic validation—execute through entirely different instruction sequences across different sessions. The VM maintains a dispatch table that maps these rotating opcodes to their actual implementations, making static analysis ineffective.

The VM includes anti-tamper instructions that validate execution environment integrity at runtime. Debug detection, checksum verification, and random integrity challenges are woven throughout normal execution flow. When tampering is detected, the system can gracefully degrade, provide false positive results, or trigger additional verification layers without revealing the detection mechanism.

WebAssembly Research Integration

JavaScript alone provides insufficient protection against sophisticated reverse engineering tools. Our research into WebAssembly compilation targets explores compiling critical protection logic into WASM modules that execute with near-native performance while maintaining much higher reverse engineering cost.

WASM modules can encapsulate key derivation algorithms, fingerprinting calculations, and challenge-response mechanisms in a format that requires specialized disassembly tools and deep understanding of the WebAssembly specification. Unlike JavaScript, which remains human-readable even when obfuscated, WASM presents attackers with assembly-level complexity.

Our hybrid approach allows seamless interoperation between JavaScript and WASM components. High-security operations execute in WASM while maintaining JavaScript compatibility for DOM manipulation and network communication. This architecture raises the technical barrier for comprehensive reverse engineering while preserving cross-browser compatibility.

DOM Polymorphism Research

Automated browsers rely heavily on static selectors to identify and interact with page elements. CSS selectors, XPath expressions, and DOM traversal patterns become the primary attack vectors for sophisticated automation tools that attempt to bypass behavioral detection.

Our research into HTML and CSS polymorphism focuses on dynamically generating functionally equivalent DOM structures that present different selector patterns to automated tools. Element IDs, class names, and hierarchical relationships rotate algorithmically while preserving visual presentation and user interaction flows.

CSS class generation employs semantic-preserving transformations that maintain styling consistency while breaking automation tools that depend on predictable class names. Form elements, interactive components, and navigation structures present different structural fingerprints across sessions without affecting legitimate user experience.

This approach forces automation tools to implement much more sophisticated DOM analysis—moving from simple selector matching to complex pattern recognition that a

pproaches the computational cost of full browser rendering.

lx-poly represents ongoing research into computational approaches for maintaining client-side security in adversarial environments. Our polymorphic techniques are designed to scale the cost and complexity of reverse engineering while preserving the performance and compatibility requirements of modern web applications.