Splunk Discovery & Enumeration

🎯 Objective: Master the identification, enumeration, and reconnaissance techniques for Splunk log analytics and SIEM infrastructure to uncover monitoring system attack surfaces, authentication mechanisms, and data access points in enterprise environments.

Overview

Splunk represents a critical high-value target in enterprise environments, serving as the central log analytics and SIEM platform containing sensitive security data, network intelligence, and business analytics. With over 7,500 employees, $2.4 billion annual revenue, and 92 Fortune 100 companies as clients, Splunk deployments often provide privileged access to comprehensive organizational data and SYSTEM/root execution context.

Key Splunk Statistics:

• Founded 2003 - IPO 2012 on NASDAQ (SPLK), Fortune 1000 company (2020)

• $2.4 billion annual revenue - 7,500+ employees globally

• 92 Fortune 100 clients - Major enterprise adoption across industries

• 2,000+ Splunkbase apps - Extensive third-party integration ecosystem

• Log analytics leader - Primary SIEM solution in large corporate environments

Enterprise Attack Significance:

• Sensitive Data Repository - Security logs, user activities, network traffic, business intelligence

• SYSTEM/Root Privileges - Splunk commonly runs with highest system privileges

• Internal Network Presence - Rare external exposure but prevalent in internal assessments

• Authentication Bypass Potential - Free version lacks authentication, weak credential configurations

• Lateral Movement Opportunities - Deployment server capabilities for Universal Forwarder compromise

---

Splunk Architecture & Components

Core System Structure

Splunk Installation Components

/opt/splunk/ (Linux) or C:\Program Files\Splunk\ (Windows)
├── bin/                       # Splunk executables and utilities
│   ├── splunk                # Main Splunk binary
│   ├── splunkd               # Splunk daemon
│   └── python                # Embedded Python interpreter
├── etc/                       # Configuration files
│   ├── system/               # System-wide configuration
│   │   ├── default/          # Default configurations
│   │   └── local/            # Local overrides
│   ├── apps/                 # Installed applications
│   │   ├── search/           # Default search app
│   │   ├── launcher/         # App launcher
│   │   └── [custom-apps]/    # Custom applications
│   ├── users/                # User-specific configurations
│   ├── deployment-apps/      # Apps for Universal Forwarders
│   └── auth/                 # Authentication configurations
├── var/                       # Variable data and logs
│   ├── log/                  # Splunk operational logs
│   ├── lib/                  # Library and index data
│   │   └── splunk/           # Index databases
│   └── run/                  # Runtime files and PIDs
├── share/                     # Shared resources
│   └── splunk/               # Documentation and samples
└── lib/                       # Splunk libraries and dependencies

Network Architecture & Communication

Splunk Deployment Architecture:
┌─────────────────────────────────────────────────┐
│                Splunk Indexer                   │
│  Port 8000 (Web Interface)                     │
│  Port 8089 (REST API/Management)               │
│  Port 9997 (Splunk2Splunk/Indexer)            │
│  - Data indexing and search                    │
│  - Web-based administration                    │
│  - REST API endpoints                          │
└─────────────────┬───────────────────────────────┘
                  │ Port 9997 (Data forwarding)
                  ▼
┌─────────────────────────────────────────────────┐
│            Universal Forwarders                 │
│  Port 8089 (Management)                        │
│  - Log collection and forwarding               │
│  - Lightweight data ingestion                  │
│  - Remote system deployment                    │
└─────────────────────────────────────────────────┘

Enterprise Integration Points:
├── Active Directory (LDAP Authentication)
├── SIEM Connectors (IBM QRadar, ArcSight)
├── Cloud Platforms (AWS CloudTrail, Azure Logs)
├── Network Devices (Firewalls, Switches, Routers)
├── Security Tools (Antivirus, EDR, Vulnerability Scanners)
├── Application Logs (Web servers, Databases, Custom apps)
└── Operating Systems (Windows Event Logs, Syslog)

Default Network Configuration

Standard Port Usage

# Primary Splunk services
8000/tcp    # Web interface (Splunk Web)
8089/tcp    # REST API and management interface
9997/tcp    # Splunk2Splunk communication (indexer clustering)
8080/tcp    # Alternative web interface (some configurations)
514/tcp     # Syslog input (if configured)
1514/tcp    # Secure syslog input (if configured)

# Universal Forwarder specific
8089/tcp    # Management interface (forwarders)
9997/tcp    # Data forwarding to indexers

# Cluster and deployment server
8191/tcp    # KV Store (cluster coordination)
9887/tcp    # Cluster replication port

Service Identification Commands

# Comprehensive Splunk service detection
nmap -sV -p 8000,8089,9997,8080,8191,9887 target.com

# Splunk-specific Nmap scripts
nmap --script http-enum -p 8000 target.com
nmap --script ssl-enum-ciphers -p 8089 target.com

# Service banner analysis
curl -I http://target.com:8000/
curl -k -I https://target.com:8089/

---

Discovery & Fingerprinting Techniques

HTTP-Based Discovery

Web Interface Identification

# Primary Splunk detection methods
curl -s http://target.com:8000/ | grep -i splunk
curl -s http://target.com:8000/en-US/account/login | grep -i splunk

# Distinctive Splunk headers and responses
curl -I http://target.com:8000/
# Look for: Server: Splunkd, X-Splunk-* headers

# Splunk-specific endpoints
splunk_endpoints=(
    "/"
    "/en-US/account/login"
    "/en-US/app/launcher/home"
    "/en-US/manager/system/licensing"
    "/servicesNS/admin/system/licenser/licenses"
    "/services/server/info"
    "/services/authentication/users"
    "/services/data/indexes"
    "/services/apps/local"
)

echo "[+] Testing Splunk-specific endpoints:"
for endpoint in "${splunk_endpoints[@]}"; do
    response=$(curl -s -o /dev/null -w "%{http_code}" "http://target.com:8000$endpoint")
    echo "$endpoint: HTTP $response"
done

Version Detection Techniques

# Method 1: Server info API endpoint
curl -s -k "http://target.com:8089/services/server/info" | grep -oP '<s:key name="version">\K[^<]+'

# Method 2: Login page analysis
curl -s "http://target.com:8000/en-US/account/login" | grep -oP 'Version \K[0-9.]+'

# Method 3: REST API with authentication
curl -s -k -u "username:password" \
  "http://target.com:8089/services/server/info?output_mode=json" | \
  jq -r '.entry[0].content.version'

# Method 4: License information (if accessible)
curl -s "http://target.com:8000/en-US/manager/system/licensing" | \
  grep -oP 'Splunk \K[0-9.]+'

# Method 5: Application manager page
curl -s "http://target.com:8000/en-US/manager/appinstall/_upload" | \
  grep -oP 'Splunk Enterprise \K[0-9.]+'

# Method 6: Footer analysis
curl -s "http://target.com:8000/" | grep -oP 'Splunk \K[0-9.]+'

License Type Detection

# Detect Splunk license type and authentication requirements
license_detection() {
    local target_url=$1
    
    echo "[+] Analyzing Splunk license and authentication:"
    
    # Check for unauthenticated access (Free license)
    response=$(curl -s -o /dev/null -w "%{http_code}" "$target_url/en-US/app/launcher/home")
    
    case $response in
        200)
            echo "[!] CRITICAL: Unauthenticated access detected - Splunk Free license!"
            echo "[+] No authentication required for administrative functions"
            ;;
        401|302)
            echo "[+] Authentication required - Enterprise/Trial license"
            ;;
        *)
            echo "[?] Unexpected response: HTTP $response"
            ;;
    esac
    
    # License information extraction
    curl -s "$target_url/en-US/manager/system/licensing" | \
      grep -E "(Enterprise|Free|Forwarder|Trial)" && \
      echo "[+] License type information discovered"
    
    # Check for license warnings/expiration
    curl -s "$target_url/" | grep -i "license.*expir\|trial.*expir" && \
      echo "[!] License expiration warnings detected"
}

# Usage:
# license_detection "http://target.com:8000"

Advanced Reconnaissance

Application and Add-on Discovery

# Installed applications enumeration
app_discovery() {
    local base_url=$1
    
    echo "[+] Discovering installed Splunk applications:"
    
    # Method 1: App launcher page
    curl -s "$base_url/en-US/app/launcher/home" | \
      grep -oP 'data-app="[^"]*"' | cut -d'"' -f2 | sort -u
    
    # Method 2: Apps API endpoint (if accessible)
    curl -s "$base_url/services/apps/local" | \
      grep -oP '<s:key name="label">\K[^<]+' | head -20
    
    # Method 3: Direct app access testing
    common_apps=(
        "search"
        "launcher" 
        "learned"
        "alert_manager"
        "enterprise_security"
        "itsi"
        "splunk_monitoring_console"
        "TA-microsoft-sysmon"
        "TA-windows"
        "TA-nix"
    )
    
    echo "[+] Testing access to common applications:"
    for app in "${common_apps[@]}"; do
        response=$(curl -s -o /dev/null -w "%{http_code}" "$base_url/en-US/app/$app/")
        if [[ $response == "200" || $response == "302" ]]; then
            echo "  [+] $app: HTTP $response"
        fi
    done
}

# app_discovery "http://target.com:8000"

Index and Data Source Discovery

# Data index enumeration and analysis
index_discovery() {
    local base_url=$1
    
    echo "[+] Discovering Splunk indexes and data sources:"
    
    # Method 1: Index API endpoint
    curl -s "$base_url/services/data/indexes" | \
      grep -oP '<s:key name="name">\K[^<]+' | head -20
    
    # Method 2: Search interface index hints
    curl -s "$base_url/en-US/app/search/search" | \
      grep -oP 'index="[^"]*"' | cut -d'"' -f2 | sort -u
    
    # Common Splunk indexes to test
    common_indexes=(
        "main"
        "security"
        "windows"
        "linux"
        "network"
        "firewall"
        "web"
        "mail"
        "database"
        "application"
        "_internal"
        "_audit"
        "_introspection"
    )
    
    echo "[+] Testing common index names:"
    for index in "${common_indexes[@]}"; do
        # Test search capability (requires authentication usually)
        search_url="$base_url/en-US/app/search/search?q=search%20index=$index%20%7C%20head%201"
        response=$(curl -s -o /dev/null -w "%{http_code}" "$search_url")
        if [[ $response == "200" ]]; then
            echo "  [+] Index accessible: $index"
        fi
    done
}

# index_discovery "http://target.com:8000"

Authentication Mechanism Analysis

Default Credential Testing

# Splunk default and common credentials
splunk_creds=(
    "admin:changeme"        # Historical default
    "admin:admin"
    "admin:password"
    "admin:Welcome1"
    "admin:Password123"
    "admin:splunk"
    "admin:"
    "splunk:splunk"
    "root:changeme"
    "administrator:changeme"
)

# Automated credential testing
credential_testing() {
    local base_url=$1
    
    echo "[+] Testing Splunk credentials:"
    
    for cred in "${splunk_creds[@]}"; do
        username=$(echo $cred | cut -d':' -f1)
        password=$(echo $cred | cut -d':' -f2)
        
        # Test authentication via login form
        csrf_token=$(curl -s "$base_url/en-US/account/login" | \
          grep -oP 'name="splunk_form_key" value="\K[^"]+')
        
        response=$(curl -s -c cookies.txt \
          -d "username=$username&password=$password&splunk_form_key=$csrf_token" \
          "$base_url/en-US/account/login" \
          -w "%{http_code}")
        
        # Check for successful authentication
        if curl -s -b cookies.txt "$base_url/en-US/app/launcher/home" | \
           grep -q "Welcome.*$username\|Logout"; then
            echo "[+] Valid credentials found: $username:$password"
            return 0
        fi
        
        rm -f cookies.txt
    done
    
    echo "[-] No valid credentials found with common defaults"
}

# credential_testing "http://target.com:8000"

Authentication Bypass Detection

# Check for authentication bypass scenarios
auth_bypass_testing() {
    local base_url=$1
    
    echo "[+] Testing authentication bypass scenarios:"
    
    # Test 1: Direct app access without authentication
    admin_urls=(
        "/en-US/manager/system"
        "/en-US/manager/appinstall/_upload"
        "/en-US/app/search/search"
        "/en-US/app/launcher/home"
        "/services/apps/local"
        "/services/data/indexes"
    )
    
    for url in "${admin_urls[@]}"; do
        response=$(curl -s -o /dev/null -w "%{http_code}" "$base_url$url")
        if [[ $response == "200" ]]; then
            echo "[!] CRITICAL: Unauthenticated access to $url"
        fi
    done
    
    # Test 2: API endpoint access
    api_endpoints=(
        "/services/server/info"
        "/services/authentication/users"
        "/services/apps/local"
        "/services/data/indexes"
    )
    
    echo "[+] Testing unauthenticated API access:"
    for endpoint in "${api_endpoints[@]}"; do
        response=$(curl -s -o /dev/null -w "%{http_code}" "$base_url$endpoint")
        case $response in
            200)
                echo "[!] Unauthenticated API access: $endpoint"
                ;;
            401)
                echo "[+] Protected: $endpoint (requires auth)"
                ;;
        esac
    done
    
    # Test 3: Free license detection
    if curl -s "$base_url/" | grep -q "Splunk Free"; then
        echo "[!] CRITICAL: Splunk Free license detected - no authentication required!"
    fi
}

# auth_bypass_testing "http://target.com:8000"

---

Data and Configuration Analysis

Search Interface Reconnaissance

Data Discovery Through Search

# Search capability testing and data discovery
search_reconnaissance() {
    local base_url=$1
    
    echo "[+] Conducting search-based reconnaissance:"
    
    # Basic searches to understand data scope
    search_queries=(
        "index=* | head 10"                    # Basic data sampling
        "| rest /services/server/info"         # Server information
        "| rest /services/data/indexes"        # Available indexes
        "| rest /services/authentication/users" # User accounts
        "index=_audit | head 20"               # Audit trail
        "index=_internal | head 20"            # Internal Splunk logs
        "eventtype=authentication"             # Authentication events
        "sourcetype=*windows* | head 10"       # Windows data
        "sourcetype=*linux* | head 10"         # Linux data
        "password OR credential OR secret"     # Sensitive data
    )
    
    for query in "${search_queries[@]}"; do
        echo "[+] Testing search: $query"
        
        # URL encode the search query
        encoded_query=$(echo "$query" | sed 's/ /%20/g' | sed 's/|/%7C/g')
        search_url="$base_url/en-US/app/search/search?q=$encoded_query"
        
        response=$(curl -s -b cookies.txt -o /dev/null -w "%{http_code}" "$search_url")
        
        case $response in
            200)
                echo "  [+] Search executed successfully"
                ;;
            401|403)
                echo "  [-] Search requires authentication"
                ;;
            *)
                echo "  [?] Unexpected response: HTTP $response"
                ;;
        esac
    done
}

# search_reconnaissance "http://target.com:8000"

Sensitive Data Identification

# Identify sensitive data patterns in Splunk
sensitive_data_hunting() {
    local base_url=$1
    
    echo "[+] Hunting for sensitive data patterns:"
    
    # Sensitive data search patterns
    sensitive_patterns=(
        'password="*"'
        'api_key="*"'
        'secret="*"'
        'token="*"'
        'credential'
        'ssn=*'
        'credit_card=*'
        'social_security=*'
        'username=* password=*'
        'database_connection'
        'ldap_bind'
        'service_account'
    )
    
    for pattern in "${sensitive_patterns[@]}"; do
        echo "[+] Searching for pattern: $pattern"
        
        # Create search query
        search_query="search $pattern | head 5"
        encoded_query=$(echo "$search_query" | sed 's/ /%20/g')
        
        # Test if search returns results
        curl -s -b cookies.txt \
          "$base_url/en-US/app/search/search?q=$encoded_query" | \
          grep -q "events found\|No results found" && \
          echo "  [+] Search executed - check results manually"
    done
}

# sensitive_data_hunting "http://target.com:8000"

Configuration File Analysis

Splunk Configuration Discovery

# Configuration file analysis and extraction
config_analysis() {
    local base_url=$1
    
    echo "[+] Analyzing Splunk configuration:"
    
    # Configuration API endpoints
    config_endpoints=(
        "/services/server/settings"
        "/services/authentication/providers"
        "/services/authorization/roles"
        "/services/data/indexes-extended"
        "/services/data/inputs/all"
        "/services/apps/local"
    )
    
    for endpoint in "${config_endpoints[@]}"; do
        echo "[+] Querying configuration: $endpoint"
        
        response=$(curl -s -b cookies.txt "$base_url$endpoint")
        
        # Extract key configuration parameters
        case $endpoint in
            *"server/settings"*)
                echo "$response" | grep -oP '<s:key name="[^"]*">[^<]*' | head -10
                ;;
            *"authentication"*)
                echo "$response" | grep -oP 'authType|ldap|saml' | head -5
                ;;
            *"authorization/roles"*)
                echo "$response" | grep -oP '<s:key name="name">\K[^<]+' | head -10
                ;;
        esac
    done
    
    # Look for sensitive configuration exposure
    echo "[+] Checking for exposed sensitive configuration:"
    
    # Test for configuration file access
    config_files=(
        "/services/configs/conf-authentication"
        "/services/configs/conf-authorize"
        "/services/configs/conf-server"
        "/services/configs/conf-web"
    )
    
    for config in "${config_files[@]}"; do
        response=$(curl -s -o /dev/null -w "%{http_code}" -b cookies.txt "$base_url$config")
        if [[ $response == "200" ]]; then
            echo "  [+] Configuration accessible: $config"
        fi
    done
}

# config_analysis "http://target.com:8000"

---

HTB Academy Lab Solutions

Lab 1: Splunk Version Detection

Question: "Enumerate the Splunk instance as an unauthenticated user. Submit the version number to move on (format 1.2.3)."

Solution Methodology:

Step 1: Environment Setup and Service Detection

# Nmap service discovery
nmap -sV -p 8000,8089 target.com

# Expected output showing Splunk services:
# 8000/tcp open  ssl/http      Splunkd httpd
# 8089/tcp open  ssl/http      Splunkd httpd

Step 2: Unauthenticated Version Detection

# Method 1: REST API server info (most reliable)
curl -s -k "http://target.com:8089/services/server/info" | \
  grep -oP '<s:key name="version">\K[^<]+'

# Method 2: Login page analysis
curl -s "http://target.com:8000/en-US/account/login" | \
  grep -oP 'Splunk \K[0-9.]+'

# Method 3: Direct web interface footer
curl -s "http://target.com:8000/" | \
  grep -oP 'Splunk \K[0-9.]+'

# Method 4: License page (if accessible without auth)
curl -s "http://target.com:8000/en-US/manager/system/licensing" | \
  grep -oP 'Version \K[0-9.]+'

Step 3: Version Verification

# HTB Academy expected version: 8.2.2
# Primary detection method - REST API:
curl -s -k "http://10.129.201.50:8089/services/server/info" | \
  grep -oP '<s:key name="version">\K[^<]+'

# Expected output: 8.2.2

# HTB Answer: 8.2.2

Step 4: Additional Reconnaissance

# Check for unauthenticated access (common in Free license)
curl -s "http://target.com:8000/en-US/app/launcher/home" | \
  grep -q "Splunk" && echo "[!] Unauthenticated access possible"

# Identify license type
curl -s "http://target.com:8000/" | \
  grep -E "Free|Enterprise|Trial" | head -1

# Check for default credentials hint
curl -s "http://target.com:8000/en-US/account/login" | \
  grep -i "changeme\|default" && echo "[+] Default credential hints found"

---

Enterprise Deployment Patterns

Internal Network Recognition

SIEM Infrastructure Mapping

# Splunk in enterprise environments commonly found:
# 1. Security Operations Centers (SOCs)
# 2. Log aggregation servers (centralized logging)
# 3. Compliance monitoring (PCI DSS, HIPAA, SOX)
# 4. Business analytics platforms (operational intelligence)

# Network reconnaissance for Splunk clusters
nmap -sS -p 8000,8089,9997 10.10.0.0/16 | grep -B 2 -A 2 "8000/tcp.*open"

# Splunk Universal Forwarder detection
nmap -sV -p 8089 target-range | grep -i "splunk"

# Deployment server identification
curl -s "http://splunk-server:8000/services/deployment/server" | \
  grep -i "deployment"

Universal Forwarder Discovery

# Universal Forwarder enumeration
forwarder_discovery() {
    local deployment_server=$1
    
    echo "[+] Discovering Universal Forwarders:"
    
    # Query deployment server for connected forwarders
    curl -s -b cookies.txt \
      "$deployment_server/services/deployment/server/clients" | \
      grep -oP '<s:key name="name">\K[^<]+' | \
      sort -u
    
    # Check for forwarder management interfaces
    curl -s -b cookies.txt \
      "$deployment_server/en-US/manager/system/distributedmanagement" | \
      grep -i "forwarder\|client" | head -10
}

# forwarder_discovery "http://deployment-server:8000"

Security Configuration Assessment

Authentication Method Analysis

# Authentication mechanism detection
auth_mechanism_analysis() {
    local base_url=$1
    
    echo "[+] Analyzing Splunk authentication mechanisms:"
    
    # Check authentication providers
    curl -s -b cookies.txt \
      "$base_url/services/authentication/providers" | \
      grep -oP '<s:key name="name">\K[^<]+'
    
    # LDAP configuration detection
    curl -s -b cookies.txt \
      "$base_url/services/configs/conf-authentication" | \
      grep -i "ldap\|saml\|radius" && \
      echo "[+] External authentication configured"
    
    # User role analysis
    curl -s -b cookies.txt \
      "$base_url/services/authorization/roles" | \
      grep -oP '<s:key name="name">\K[^<]+' | \
      head -20
}

# auth_mechanism_analysis "http://target.com:8000"

Security Hardening Assessment

# Security configuration evaluation
security_assessment() {
    local base_url=$1
    
    echo "[+] Evaluating Splunk security configuration:"
    
    # SSL/TLS configuration
    echo "[+] Checking SSL/TLS configuration:"
    curl -s -I "$base_url" | grep -i "strict-transport\|x-frame\|content-security"
    
    # Authentication requirements
    response=$(curl -s -o /dev/null -w "%{http_code}" "$base_url/en-US/app/launcher/home")
    case $response in
        200)
            echo "[!] CRITICAL: No authentication required"
            ;;
        401|302)
            echo "[+] Authentication properly enforced"
            ;;
    esac
    
    # Default credential testing
    csrf_token=$(curl -s "$base_url/en-US/account/login" | \
      grep -oP 'name="splunk_form_key" value="\K[^"]+')
    
    default_auth=$(curl -s -c test_cookies.txt \
      -d "username=admin&password=changeme&splunk_form_key=$csrf_token" \
      "$base_url/en-US/account/login" \
      -w "%{http_code}")
    
    if curl -s -b test_cookies.txt "$base_url/en-US/app/launcher/home" | \
       grep -q "Welcome"; then
        echo "[!] CRITICAL: Default credentials (admin:changeme) still active"
    else
        echo "[+] Default credentials have been changed"
    fi
    
    rm -f test_cookies.txt
}

# security_assessment "http://target.com:8000"

---

Intelligence Gathering Workflow

Systematic Splunk Assessment

Phase 1: Discovery & Identification

• Service Detection - Port scanning and service identification

• Version Fingerprinting - REST API, login pages, headers

• License Analysis - Free vs Enterprise vs Trial detection

• Authentication Assessment - Default credentials, bypass testing

Phase 2: Access Control Evaluation

• Authentication Bypass - Unauthenticated access testing

• Default Credential Testing - Common username/password combinations

• License Type Analysis - Free license authentication bypass

• API Endpoint Assessment - REST API access and permissions

Phase 3: Data and Configuration Analysis

• Index Discovery - Available data indexes and sources

• Application Enumeration - Installed apps and add-ons

• Search Capability Testing - Data access and query permissions

• Configuration Exposure - Sensitive configuration access

Phase 4: Infrastructure Mapping

• Deployment Architecture - Indexers, forwarders, deployment servers

• Universal Forwarder Discovery - Connected endpoints and agents

• Cluster Analysis - Multi-node deployments and replication

• Integration Assessment - External system connections and data sources

---

Risk Assessment Framework

Splunk Security Priorities

Critical Findings

# Immediate security concerns to identify:
critical_checks=(
    "Unauthenticated access to Splunk instance"
    "Default credentials (admin:changeme)"
    "Splunk Free license with no authentication"
    "Exposed configuration endpoints"
    "Sensitive data in search indexes"
    "Unrestricted Universal Forwarder deployment"
    "Administrative API access without authentication"
    "Deployment server compromise potential"
)

# Risk assessment automation
for check in "${critical_checks[@]}"; do
    case "$check" in
        "Unauthenticated access to Splunk instance")
            curl -s "http://target.com:8000/en-US/app/launcher/home" | \
              grep -q "Splunk" && echo "[!] CRITICAL: $check"
            ;;
        "Default credentials (admin:changeme)")
            # Test would be implemented with credential testing function
            echo "[+] Testing: $check"
            ;;
        # Add other checks as needed
    esac
done

Data Sensitivity Analysis

# Assess the sensitivity of data accessible through Splunk
data_sensitivity_analysis() {
    local base_url=$1
    
    echo "[+] Analyzing data sensitivity in Splunk indexes:"
    
    # High-sensitivity data patterns
    sensitive_searches=(
        "eventtype=authentication"     # Authentication logs
        "sourcetype=*windows*"         # Windows event logs
        "source=*security*"            # Security logs
        "source=*audit*"               # Audit trails
        "password OR credential"       # Credential exposure
        "ssn OR social_security"       # PII data
        "credit_card OR payment"       # Financial data
        "email OR communication"       # Communication logs
    )
    
    for search in "${sensitive_searches[@]}"; do
        echo "[+] Checking for: $search"
        # Implementation would test search capabilities
    done
}

# data_sensitivity_analysis "http://target.com:8000"

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Next Steps

After Splunk enumeration, proceed to:

1. Splunk Attacks & Exploitation - Custom application RCE and data exfiltration

2. PRTG Network Monitor Discovery - Infrastructure monitoring reconnaissance

3. SIEM Security Assessment - Advanced log analytics exploitation

💡 Key Takeaway: Splunk enumeration focuses on SIEM infrastructure reconnaissance, authentication bypass discovery, and sensitive data access evaluation. Enterprise environments frequently contain Splunk instances with weak authentication or Free license configurations, making systematic enumeration crucial for identifying high-value data repositories and privileged system access.

📊 Professional Impact: Splunk compromises provide access to comprehensive organizational logs, security monitoring data, and business intelligence, often with SYSTEM/root privileges and lateral movement opportunities through Universal Forwarder networks.