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Security
Command

/takeover

Scan subdomains for takeover candidates (dangling CNAMEs to GitHub Pages, S3, Heroku, Shopify, etc.). Wraps dnsReaper (best signal) and subjack (fast Go fallback). With no scanner installed, runs a built-in fingerprint grep over a curated set of providers. Usage: /takeover

From plugin
claude-bug-bounty
4.2k33 skills9 agents33 commands
Install
$ npx -y skills add shuvonsec/claude-bug-bounty --agent claude-code

How it fires

How this command gets triggered: by you, by Claude, or both.

  • Fires itselfClaude auto-loads it when your prompt matches the work.
  • You can call itInvoke it directly when you want it.
  • Slash command/takeover

Context preview

What this command does when you run it.

Scan subdomains for takeover candidates (dangling CNAMEs to GitHub Pages, S3, Heroku, Shopify, etc.). Wraps dnsReaper (best signal) and subjack (fast Go fallback). With no scanner installed, runs a built-in fingerprint grep over a curated set of providers. Usage: /takeover

Command definition

takeover.md
description: Scan subdomains for takeover candidates (dangling CNAMEs to GitHub Pages, S3, Heroku, Shopify, etc.). Wraps dnsReaper (best signal) and subjack (fast Go fallback). With no scanner installed, runs a built-in fingerprint grep over a curated set of providers. Usage: /takeover <subdomains-file> | /takeover --recon <recon-dir>

/takeover

Find subdomains pointing at services you can claim and serve content from.

Usage

/takeover recon/target.com/subdomains/all.txt
/takeover --recon recon/target.com           # equivalent

How it works

`tools/takeover_scanner.sh` tries each strategy in turn:

1. **dnsReaper** (`punk-security/dnsReaper`) — broadest fingerprint set, JSON output. 2. **subjack** (`haccer/subjack`) — fast Go scanner. 3. **Curl + fingerprint grep** fallback — minimal coverage but always runs.

Scoring & submission

Subdomain takeover sits high on most program reward tables — typically **$500–$5,000** depending on what the parent brand uses the subdomain for. Before submitting:

  • Confirm the dangling target service is actually claimable today (Heroku and

GitHub Pages are easy; some providers now block re-claims by name).

  • Take **only** the screenshot you need to prove control — never serve real

content or interact with users from the claimed subdomain.

  • Cross-reference `EdOverflow/can-i-take-over-xyz` for the per-provider claim

instructions and known-good fingerprints.

Output

`findings/takeover/<timestamp>/` with raw scanner JSON / text plus a `fingerprint_grep.txt` summary of suspicious responses.

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