kmshihab7878/claude-code-setup/osint-recon

Claude Code and agent skill by kmshihab7878/claude-code-setup

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OSINT investigation and reconnaissance workflows. Username enumeration, domain intelligence, dark web monitoring, social media analysis, and structured investigation methodology. Use for authorized OSINT research, threat intelligence, and security investigations.

Install

npx vskill@latest install kmshihab7878/claude-code-setup/osint-recon

SKILL.md

OSINT Recon

Open Source Intelligence investigation and reconnaissance workflows.

how to use

  • /osint-recon

Apply OSINT methodology to the current investigation.

  • /osint-recon <target-type>

Plan an OSINT investigation for username, domain, email, or organization.

when to apply

Reference these guidelines when:

  • investigating usernames or email addresses
  • performing domain intelligence gathering
  • conducting threat intelligence research
  • analyzing social media footprints
  • mapping organizational structure
  • participating in OSINT CTF challenges

investigation methodology

OSINT Cycle
  1. Planning: Define objectives, scope, legal constraints
  2. Collection: Gather raw data from open sources
  3. Processing: Clean, normalize, deduplicate data
  4. Analysis: Correlate findings, identify patterns
  5. Dissemination: Report findings with confidence levels
  6. Feedback: Refine collection based on gaps
Evidence Classification
LevelDescriptionExample
ConfirmedMultiple independent sourcesUsername + email + profile photo match
ProbableStrong single source or partial corroborationUsername match + similar bio
PossibleSingle weak sourceUsername exists on platform
DoubtfulContradictory or unreliableCommon username, no distinguishing info

username enumeration

Sherlock-Style Patterns
python
# Pattern: Multi-platform username check
import asyncio
import aiohttp
from typing import TypedDict
class UsernameResult(TypedDict):
platform: str
url: str
status: str # "found", "not_found", "error"
response_time_ms: float
PLATFORMS = {
"github": "https://github.com/{username}",
"twitter": "https://x.com/{username}",
"instagram": "https://instagram.com/{username}",
"reddit": "https://reddit.com/user/{username}",
"linkedin": "https://linkedin.com/in/{username}",
"medium": "https://medium.com/@{username}",
"dev.to": "https://dev.to/{username}",
"hackernews": "https://news.ycombinator.com/user?id={username}",
}
async def check_username(
session: aiohttp.ClientSession,
platform: str,
url: str,
) -> UsernameResult:
"""Check if username exists on a platform."""
try:
async with session.get(url, timeout=aiohttp.ClientTimeout(total=10)) as resp:
return {
"platform": platform,
"url": url,
"status": "found" if resp.status == 200 else "not_found",
"response_time_ms": 0,
}
except Exception:
return {"platform": platform, "url": url, "status": "error", "response_time_ms": 0}
Key Tools
  • Sherlock: Username enumeration across 400+ sites
  • WhatsMyName: Web-based username search
  • Namechk: Domain + username availability

domain intelligence

DNS & WHOIS
bash
# DNS enumeration
dig +short A example.com
dig +short MX example.com
dig +short TXT example.com
dig +short NS example.com
# WHOIS
whois example.com
# Subdomain enumeration
# Tools: subfinder, amass, sublist3r
subfinder -d example.com -silent
# Certificate transparency
curl -s "https://crt.sh/?q=%25.example.com&output=json" | jq '.[].name_value'
Technology Fingerprinting
  • Wappalyzer: Browser extension for tech stack detection
  • BuiltWith: Historical technology data
  • Shodan: Internet-connected device search
  • Censys: Certificate and host search

email intelligence

Email Verification Patterns
python
# Pattern: Email OSINT workflow
def email_osint(email: str) -> dict:
"""Gather intelligence from an email address."""
local_part, domain = email.split("@")
return {
"email": email,
"domain_info": {
"mx_records": dns_lookup(domain, "MX"),
"spf_record": dns_lookup(domain, "TXT", filter="spf"),
"dmarc_record": dns_lookup(f"_dmarc.{domain}", "TXT"),
},
"breach_check": "Use HaveIBeenPwned API",
"social_profiles": "Cross-reference with username enumeration",
"domain_age": "WHOIS creation date",
}
Tools
  • theHarvester: Email, subdomain, name harvesting
  • Hunter.io: Email pattern discovery
  • HaveIBeenPwned: Breach exposure check

dark web intelligence

CTI Feed Sources (from DeepDarkCTI)
Source TypeExamplesUse Case
Paste sitesPastebin, GhostBinCredential leaks, data dumps
ForumsMonitored via threat intel platformsThreat actor discussion
MarketplacesTracked by law enforcementCompromised data sales
TelegramPublic channelsReal-time threat chatter
DiscordPublic serversCommunity threat intel
CTI Integration Pattern
python
# Pattern: CTI feed aggregation
from dataclasses import dataclass
from datetime import datetime
from enum import Enum
class ThreatLevel(Enum):
LOW = "low"
MEDIUM = "medium"
HIGH = "high"
CRITICAL = "critical"
@dataclass
class ThreatIndicator:
ioc_type: str # ip, domain, hash, email, url
ioc_value: str
source: str
threat_level: ThreatLevel
first_seen: datetime
context: str
confidence: float # 0.0 - 1.0

social media analysis

Profile Analysis Framework
  1. Account metadata: Creation date, follower/following ratio, posting frequency
  2. Content analysis: Topics, sentiment, language patterns
  3. Network analysis: Connections, group memberships, interactions
  4. Temporal analysis: Activity patterns, time zones, posting schedules
  5. Cross-platform correlation: Matching profiles across platforms
OSINT Workflow Template (from Obsidian OSINT Templates)
markdown
## Investigation: {{target}}
**Date**: {{date}}
**Objective**: {{objective}}
**Scope**: {{scope}}
### Findings
| Source | Data Point | Confidence | Notes |
|--------|-----------|------------|-------|
### Timeline
| Date | Event | Source |
### Connections Map
[Graph of relationships between entities]
### Assessment
**Confidence Level**: Confirmed / Probable / Possible / Doubtful
**Summary**:
**Recommendations**:

data correlation techniques

Entity Resolution
python
# Pattern: Cross-source entity matching
def correlate_entities(sources: list[dict]) -> list[dict]:
"""Match entities across different OSINT sources."""
# Exact matches: email, phone, unique IDs
# Fuzzy matches: names (Levenshtein), usernames (substring)
# Behavioral matches: writing style, posting times
# Visual matches: profile photo reverse image search
...
Pivot Points
  • Username → email → real name → address
  • Domain → IP → other domains (reverse DNS)
  • Phone → social media → real identity
  • Image → EXIF data → GPS coordinates → other photos

integration with the operator's environment

ComponentIntegration
memory MCP serverStore entities, relations, observations as investigation graph
security-auditor agentAutomate reconnaissance for security assessments
PostToolUse hookAll OSINT commands logged in audit.log
sequential MCPStep-by-step reasoning for complex correlations
CoreMind security layerHash chain audit trail for investigation activities
Using Memory MCP for Investigations
# Store investigation entities
mcp__memory__create_entities: [{name: "target_user", entityType: "person", observations: ["..."]}]
mcp__memory__create_relations: [{from: "target_user", to: "target_domain", relationType: "owns"}]
mcp__memory__search_nodes: {query: "target investigation"}

legal and ethical guidelines

  1. Only use publicly available information
  2. Never access private accounts or systems without authorization
  3. Respect robots.txt and rate limits (see browser-automation-safety skill)
  4. Document your methodology for reproducibility
  5. Report findings responsibly (coordinated disclosure)
  6. Comply with local privacy laws (GDPR, CCPA, etc.)
  7. Never harass or stalk individuals

cross-references

  • offensive-security skill: Full penetration testing methodology
  • security-review skill: Code-level security analysis
  • browser-automation-safety skill: Rate limiting, robots.txt compliance
  • research-methodology skill: Source credibility assessment
  • SECURITY_ARSENAL.md: Complete tool inventory

Security

  • Security scanPassed, 95 of 100Pattern checks on the skill's files.
  • Model reviewPassed

Quality evaluation

  • Task evaluationNot runNo evaluation yet. Run one in Skill Studio.

Source

Popularity

Repository stars
6
Repository forks
1
7-day trend score
10

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