Proof of concept code for client-side vulnerabilities

Basic HTML proof of concepts for issues such as:

• Clickjacking
• insecure CORS settings
• CSRF
• Tabnapping
• XSSI
• postMessage issues

Most of these are pretty basic, but having them all in one place avoids writing the same things over and over again.

Two things that are a bit more interesting:

• clickjacking_full.html: an advanced clickjacking script for real-world multi-click Clickjacking exploitation (see blog post ClickAnywhere: An Advanced Clickjacking Script for details).
• csrf-multi.html: automatically send multiple CSRF requests (for example when bruteforcing a small value - such as an IP when performing CSRF against internal networks -, or for multi-stage CSRF attacks where the order of requests dosn't matter, or requests can be performed multiple times).