Android APK Security Pipeline

Decompiles and scans Android APKs for secrets, exposed components and risky intents.

Install

npx skills add elementalsouls/Claude-BugHunter --skill apk-redteam-pipeline -g -a claude-code -y

Press to copy:C Claude CodeX CodexU CursorA Ask your agent

Repository: elementalsouls/Claude-BugHunter5.4k
Category: Security
Updated: 3d ago
License: MIT
Context cost: Mediumabout 3,000 tokens
Runs scripts: No, instructions only

What it does

End-to-end Android APK red-team pipeline, automated APK acquisition (Play Store + apkpure + apkmirror fallback), jadx decompilation, secret/URL/JWT/Firebase grep, pinned-cert extraction, exported-component enumeration, Frida runtime instrumentation templates, intent-injection probes. Built from an authorized external red-team engagement where 7 APKs were pulled manually, 4 download attempts truncated, and a hardcoded JWT + 30 internal API endpoints were recovered from one of the apps. Use when target has a mobile app catalogue (Play Store developer page), when you find an APK URL hosted on a web server, or when post-recon mentions "mobile app" in scope.

When to use this skill

Trigger when:

Recon surfaces 1+ mobile apps under the target's developer name (Play Store dev page)
A web app hosts *.apk files directly (e.g. Recruitz.apk found on a subdomain during one engagement)
APK package IDs leaked via stealer logs (e.g. com.<brand>.app, com.<brand>.<sub-brand> patterns in stealer dump format)
Customer-facing app, dealer/partner portal, or employee mobile companion app is in scope
Bug bounty program lists Android in scope

DO NOT use for:

iOS-only targets (different pipeline, IPA reverse, MobSF, frida-ios-dump)
React Native / Flutter web apps already covered by JS bundle analysis
Server-side only assessments

Stage 0, Inventory all org-owned apps

Play Store developer-page scrape

# Find developer page from the target's brand name
curl -sk -A "Mozilla/5.0" "https://play.google.com/store/apps/developer?id=<Brand+Name>" -o /tmp/dev.html

# Extract package IDs
grep -oE 'id=[a-zA-Z0-9._]+' /tmp/dev.html | sort -u

Example output (anonymized, 7 packages typical for a multi-brand conglomerate):

com.events.<brand>build
com.<corp>.<sub-brand-1>
com.<corp>.<sub-brand-2>
com.<corp>.<flagship>
com.<corp>.<product-line-1>
com.<corp>.<product-line-2>
com.<corp>.<sub-brand-3>

Cross-reference with stealer logs

Stealer-log format includes package names like *@com.<corp>.<app>, extract these from creds_userpass.txt if you have a leaked dump.

Brand permutation guesses (multi-brand conglomerate patterns)

com.<brand>.app
com.<brand>.mobile  
com.<brand>.android
com.<brand>connect.app
in.<brand>.dealer
in.co.<brand>.app

Stage 1, APK acquisition

Primary: APKPure direct (no auth required)

# Follow 302 redirects to actual download
curl -sk -L --max-time 60 \
  "https://d.apkpure.net/b/APK/<package_id>?version=latest" \
  -o "<package_id>.apk"

# Or via the legacy d-XX.winudf.com mirror chain (we saw this work)

Read the whole SKILL.md on GitHub