README

JIT Compilation in Delphi

This project demonstrates Just-In-Time (JIT) Compilation in Delphi by dynamically allocating executable memory, decrypting bytecode at runtime, and executing it as a function.

Features

• JIT Compilation: Executes dynamically generated machine code at runtime.
• Runtime Encryption & Decryption: Bytecode is XOR-encrypted and decrypted just before execution.
• Memory Protection: The allocated memory is wiped after execution to prevent reverse engineering.

How It Works

1. The encrypted bytecode (EncCode) is stored in the program.
2. Before execution, it is decrypted using an XOR-based encryption method.
3. The decrypted bytecode is allocated in executable memory using VirtualAlloc.
4. The function is executed, and the output is printed.
5. After execution, the memory is erased and released to prevent analysis.

Requirements

• Delphi 7
• Windows OS

Usage

Simply compile and run the program. It will decrypt and execute the JIT-compiled function, displaying the output.

Security Considerations

• Uses runtime encryption to hide bytecode from static analysis.
• Clears memory after execution to prevent memory dumps.
• Can be extended with polymorphic encryption for stronger obfuscation.

Contribution

Feel free to fork this repository, submit issues, or contribute improvements via pull requests.