Skip to content
Skillpedia
Security48k · #3249

hunt-clickjacking

Makes your agent look for clickjacking flaws. It helps prevent users from being tricked into clicking malicious links.

What it does

This tool helps check if a website can be tricked into making a user click something unknowingly. It does this by checking if the site allows itself to be displayed within another website invisibly.

When to use it

  • ✓When testing a website's security with permission.
  • ✓To check if important buttons (like 'pay' or 'confirm') can be clicked without the user's knowledge.
  • ✓To understand how websites protect themselves against this type of attack.

Example of what to ask your AI

“Check if the website 'example.com' can be tricked into making a user click a hidden button.”

Want more? Open the sections below.

How to use

The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.

Skill link

https://github.com/sickn33/agentic-awesome-skills/blob/main/plugins/agentic-awesome-skills-claude/skills/hunt-clickjacking/SKILL.md

Ready-to-paste message

Use this skill to help me: https://github.com/sickn33/agentic-awesome-skills/blob/main/plugins/agentic-awesome-skills-claude/skills/hunt-clickjacking/SKILL.md Read the SKILL.md file at that link and follow its instructions for my task.
How it works

First, it checks the website's 'rules' to see if it allows being displayed on other sites. If there are no clear protection rules, it tries to display the site in an invisible 'frame' to see if important actions can be performed.

Installation

Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.

In the terminal (Claude Code, Codex, Cursor), in your project folder:

npx skills add sickn33/agentic-awesome-skills --skill hunt-clickjacking

Or download just the file:

curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/skills/hunt-clickjacking/SKILL.md -o SKILL.md
Technical content (original SKILL.md)

Original text by the author, straight from GitHub.

⚠️ AUTHORIZED USE ONLY This skill is for educational purposes or authorized security assessments only. You must have explicit, written permission from the system owner before using this tool. Misuse of this tool is illegal and strictly prohibited.

Mandatory confirmation gate Before running any command that probes, exploits, changes, persists on, extracts data from, or attempts credential access against a target:

  1. Ask the user to state the exact target URL, IP, account, or resource.
  2. Ask the user to confirm written authorization and the permitted scope.
  3. Show the exact command(s) and explain their expected effect.
  4. Wait for explicit confirmation in the current conversation.

Without that confirmation, remain read-only and provide defensive guidance only. Prefer a sandbox, disposable VM, or controlled lab.

What is Clickjacking

Clickjacking (UI Redressing) lets an attacker load a target page inside a transparent iframe on a malicious site. The victim sees the attacker's decoy UI but clicks the hidden target UI beneath it. No JavaScript on the target is required.

Highest-value targets:

  • Login / authentication pages — force login with attacker credentials
  • Money transfer / checkout / "confirm payment" buttons
  • Account settings (email change, password change, 2FA disable)
  • OAuth / social-login "Authorize app" confirmation dialogs
  • Admin actions (delete, promote user, change role)

Protection Headers

Two mechanisms prevent framing:

X-Frame-Options: DENY              # strongest — blocks all framing
X-Frame-Options: SAMEORIGIN        # allows same-origin frames only
Content-Security-Policy: frame-ancestors 'none'     # CSP equivalent of DENY
Content-Security-Policy: frame-ancestors 'self'     # CSP equivalent of SAMEORIGIN

If NEITHER is present, the page is frameable from any origin.

How to Test

Header-absence is the trigger for investigation, not the finding. Two steps:

Step 1 — Header check (screening). Fetch the target page and inspect the response headers:

curl -sI https://target.example/account/transfer | grep -iE 'x-frame-options|content-security-policy'

If BOTH X-Frame-Options and CSP frame-ancestors are absent, the page is a candidate. If either is present and restrictive (DENY/SAMEORIGIN/frame-ancestors 'none'|'self'), stop — it's protected.

Step 2 — Prove it actually frames and clicks (required for a real finding). Build a minimal PoC and load it in a real browser:

<!doctype html>
<h1>Win a prize — click below</h1>
<iframe src="https://target.example/account/transfer"
        style="opacity:0.1;position:absolute;top:0;left:0;width:1000px;height:800px"></iframe>

Confirm ALL of the following, or it is not exploitable:

  • The page actually renders inside the iframe (no framebusting JS that blanks/redirects it — e.g. if(top!==self) breakout, or a Sec-Fetch-Dest/JS frame check).
  • The sensitive action still works while framed — critically, the action must succeed cross-site. If it relies on a session cookie set SameSite=Lax or SameSite=Strict (the modern default), the cookie is not sent on the cross-site framed request, and the clickjack fails. Verify the victim's authenticated state carries into the frame.
  • The target is a state-changing action (transfer, settings/email/password change, 2FA disable, OAuth authorize, admin action), not a read-only page.

Strategy: target the most sensitive action pages first — severity scales directly with what the victim is tricked into doing.

False Positives

  • Public, read-only pages (home/marketing) lacking frame protection are low/informational — no sensitive action to redress.
  • APIs and non-HTML endpoints (JSON, images) are not clickjacking targets.
  • Header-absence alone is NOT a finding. SameSite cookies, framebusting JS, or the lack of any sensitive framed action can each fully defeat it — which is why Step 2 is mandatory.

Proof Requirements

A valid clickjacking report shows: (1) the target page rendered inside an attacker-controlled iframe in a real browser, (2) a sensitive state-changing action reachable by a framed click while the victim is authenticated (cookies survive the cross-site context), and (3) a screenshot/recording of the overlay. Reporting missing headers with no working frame PoC is a documentation-quality issue, not a vulnerability.

When to Use

…

FAQ

What is Clickjacking?

It's an attack where a malicious website loads a target website in an invisible frame. The user thinks they are interacting with the malicious site, but they are actually clicking buttons or links on the target site without realizing it.

Which sites are most vulnerable?

Sites dealing with logins, payments, important setting changes, or app authorizations are high-value targets.

How do sites protect themselves?

They use security 'headers' like 'X-Frame-Options' or 'Content-Security-Policy' to prevent themselves from being displayed in frames on other websites.

Details

Original description by the author

Hunt Clickjacking

repo: sickn33/agentic-awesome-skills

Popularity

GitHub stars
48k
Ranking position
#3249
License
MIT
Updated
10/15/2026

Is this skill useful?

0

Sign in to vote.

Comments

  • …

More skills from this repository

Similar skills