Recon Skills is a pack of security-testing skills covering reconnaissance, web applications, APIs, authentication, vulnerability validation, cloud infrastructure, and reporting. Security professionals use it for authorized assessments of systems they own or have written permission to test. The catalogue entries are individual skills from the pack.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add uphiago/recon-skills --skill hunt-firebasegit clone --depth 1 https://github.com/uphiago/recon-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/uphiago/recon-skills/hunt-firebase)<a href="https://agentmods.dev/skills/uphiago/recon-skills/hunt-firebase"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/hunt-firebase/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/uphiago/recon-skills/hunt-firebase"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/hunt-firebase.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 13 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 3 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 77 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 79 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 391 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 80 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 81 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Supply Chain · line 84 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- high Supply Chain · line 85 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- high Supply Chain · line 101 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- high Supply Chain · line 162 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- medium Data Exfiltration · line 101 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 188 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 267 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00133 | $0.04799 |
| Opus 5 | $0.00067 | $0.02400 |
| Sonnet 5 | $0.00027 | $0.00960 |
| Haiku 4.5 | $0.00013 | $0.00480 |
Grade C, and why
hunt-firebase scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET/service-account.json" | python3 -m json.tool 2>/dev/null Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET" -o /tmp/index.html How it starts
The opening of the file, as written. The whole thing — 461 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HUNT-FIREBASE — Firebase / Firestore / GCP Exploitation
Crown Jewel Targets
Firebase is Google's mobile/web platform. When developers embed the API key in the client (which is required by Firebase SDKs), they often forget to configure Firestore Security Rules or Realtime Database Rules, leaving all data publicly readable and writable.
Highest-value findings:
- Public Firestore Database — anon key allows read/write to ALL collections → full data dump (users, messages, PII). Critical.
- Public Realtime Database —
{database}.firebaseio.com/.jsonreturns all data without auth. Critical. - Firebase Storage with public read — storage bucket allows anonymous file listing and download. Critical.
- Firebase signUp open — anyone can create an auth account, then use the JWT to access Firestore. High.
- Service Account JSON leaked — full GCP IAM access to Firestore, Storage, Cloud Functions, IAM policy. Critical.
- Firebase Hosting with config leakage — hosting reveals project ID and API key in static files.
Phase 1 — Find the Firebase Project
Firebase is identified by its API key format: AIzaSy[0-9A-Za-z_-]{35}
1.1 Search in JS Bundles
# Download the main page and its JS bundles
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET" -o /tmp/index.html
grep -Eo 'src="[^"]*\.js"' /tmp/index.html | cut -d'"' -f2 | while read js; do
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET$js" -o "/tmp/$(basename $js)"
done
# Search for Firebase API keys in all downloaded JS
grep -rEn 'AIza[0-9A-Za-z_-]{35}' /tmp/*.js
# Search for firebaseConfig
grep -rEn 'firebaseConfig|firebase.initializeApp|apiKey|authDomain' /tmp/*.js --include="*.js"
# Search for Firebase URLs
grep -rEn 'firebaseio|firestore|firebasestorage|firebaseapp' /tmp/*.js --include="*.js"
# Quick one-liner for any page
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET" | grep -Eo 'AIza[0-9A-Za-z_-]{35}'
1.2 Search in Source Maps
# First find source maps
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET" | grep -Eo 'sourceMappingURL=[^\"]+' | cut -d= -f2 | while read sm; do
curl --max-time 30 --connect-timeout 10 -sk "https://$TARGET$(echo $sm | sed 's|^/||')" -o "/tmp/$(basename $sm)"
done
# Extract all source files from maps
cat /tmp/*.map 2>/dev/null | python3 -c "
import sys, json, re, os
try:
data = json.load(sys.stdin)
sources = data.get('sourcesContent', [])
for src in sources:
if not src: continue
keys = re.findall(r'AIza[0-9A-Za-z_-]{35}', src)
for k in keys:
print(f'FIREBASE_API_KEY: {k}')
urls = re.findall(r'https://[^\"'\"]+firebaseio[^\"'\"]+', src)
for u in urls:
print(f'FIREBASE_URL: {u}')
except: pass
" 2>/dev/null
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 461 lines · 133 tokens per session scan C dfe99e6e8f08
hunt-firebase is a skill published in the GitHub repository uphiago/recon-skills (1,254 stars, last pushed 10d ago), licensed MIT. It adds 133 tokens to every session and 4,799 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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detecting-shadow-api-endpoints
Discover and inventory shadow API endpoints that operate outside documented specifications using traffic analysis, code scanning, and API discovery platforms.