SHELL-JS

A lightweight,shellcode loader written in js for Windows that reads shellcode from a local .h file (in \xAA\xBB... C-header format), allocates executable memory, and runs it in a new thread.

Educational / Red Team / Research use only.

Features

• Reads shellcode from a local file (no network dependency)
• Parses classic \xAA\xBB\xCC C-style byte arrays
• Allocates memory using VirtualAlloc
• Attempts stealthier RX memory protection first, with fallback to RWX
• Executes shellcode in a new thread via CreateThread
• Minimal dependencies (koffi + Node.js)

Requirements

• Windows operating system
• Node.js ≥ 18
• npm

Installation

# 1. Clone the repo
git clone https://github.com/00nx/shell-js.git
cd shell-js

# 2. Install dep
npm install koffi

usage

1. prepare the shell code with donut with proper flags ( must need C heade type -f 3 )
2. Run the loader

   node inject.js
   or
   node inject.js bytes.h