🪓 LogReaper v1.0

High-Speed Log Analysis & Forensics Tool

Blazing-fast log analysis for incident response, threat hunting, and forensic investigations

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💻 Tech Stack

Core

Log Sources

Output Formats

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🎯 Features

🔬 Analysis Modules (8) Module Flag Description Auth Analysis -a SSH brute force, sudo abuse Web Forensics -w SQLi, XSS, path traversal Network Events -n Firewall, connection anomalies System Events -s User changes, service starts Timeline -t Event correlation timeline IOC Extract -i IPs, hashes, domains Baseline Diff -b Compare against known-good Live Stream -l Real-time log monitoring

📋 Supported Logs (25+) Category Sources System syslog, auth.log, secure, messages Journald systemd journal binary logs Web Apache, Nginx, IIS, HAProxy Apps PostgreSQL, MySQL, Redis, MongoDB Cloud AWS CloudTrail, Azure Activity Auth PAM, SSSD, Kerberos, LDAP Firewall iptables, nftables, firewalld Container Docker, Kubernetes audit

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🚀 Quick Start

Installation

# Clone and build
git clone https://github.com/bad-antics/nullsec-logreaper
cd nullsec-logreaper
make

# Install system-wide (optional)
sudo make install

Basic Usage

# Analyze auth logs for brute force
./logreaper -a /var/log/auth.log

# Hunt for web attacks
./logreaper -w /var/log/nginx/access.log

# Full system analysis with timeline
./logreaper -t /var/log/

# Real-time monitoring
./logreaper -l /var/log/syslog

# Extract IOCs to JSON
./logreaper -i /var/log/ -o iocs.json

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📊 Detection Patterns

Authentication Threats

Pattern	Description	Severity
AUTH_BRUTE_SSH	SSH brute force attempts	🔴 High
AUTH_SUDO_ABUSE	Unusual sudo usage	🟡 Medium
AUTH_SU_ROOT	Privilege escalation via su	🔴 High
AUTH_FAIL_BURST	Rapid auth failures	🔴 High
AUTH_NEW_USER	New user created	🟡 Medium
AUTH_PASSWD_CHG	Password changed	🟡 Medium

Web Attack Signatures

Pattern	Description	Severity
WEB_SQLI	SQL injection attempts	🔴 Critical
WEB_XSS	Cross-site scripting	🔴 High
WEB_LFI	Local file inclusion	🔴 Critical
WEB_RFI	Remote file inclusion	🔴 Critical
WEB_PATH_TRAV	Path traversal (../)	🔴 High
WEB_CMD_INJ	Command injection	🔴 Critical
WEB_SCANNER	Automated scanner detected	🟡 Medium

System Anomalies

Pattern	Description	Severity
SYS_KERNEL_MOD	Kernel module loaded	🟡 Medium
SYS_SELINUX_OFF	SELinux disabled	🔴 High
SYS_CRON_CHANGE	Cron job modified	🟡 Medium
SYS_SERVICE_NEW	New systemd service	🟡 Medium
SYS_MOUNT_EXEC	Exec mount option	🟡 Medium

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📈 Output Formats

JSON Report

{
  "scan_id": "lr-20250127-143022",
  "total_events": 15847,
  "threats_found": 23,
  "timeline": [...],
  "iocs": {
    "ips": ["192.168.1.100", "10.0.0.5"],
    "domains": ["evil.example.com"],
    "hashes": []
  },
  "findings": [...]
}

Terminal Output

╔══════════════════════════════════════════════════════════════╗
║                    🪓 LogReaper v1.0                         ║
╠══════════════════════════════════════════════════════════════╣
║  Target: /var/log/auth.log                                   ║
║  Lines:  15,847                                              ║
║  Period: 2025-01-20 → 2025-01-27                            ║
╠══════════════════════════════════════════════════════════════╣
║  🔴 CRITICAL  │ 3                                            ║
║  🟠 HIGH      │ 12                                           ║
║  🟡 MEDIUM    │ 8                                            ║
║  🟢 LOW       │ 0                                            ║
╚══════════════════════════════════════════════════════════════╝

[!] AUTH_BRUTE_SSH detected
    Time:   2025-01-26 14:32:15
    Source: 192.168.1.100
    Count:  847 attempts in 5 minutes
    User:   root, admin, ubuntu

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🔧 Advanced Usage

Timeline Correlation

# Build attack timeline from multiple sources
./logreaper -t \
    /var/log/auth.log \
    /var/log/nginx/access.log \
    /var/log/syslog \
    -o timeline.json

IOC Extraction for SIEM

# Extract IOCs in Splunk-compatible format
./logreaper -i /var/log/ --format splunk > iocs.txt

# Extract for ELK Stack
./logreaper -i /var/log/ --format elastic | curl -X POST ...

Integration with RKHunt

# Run LogReaper → pipe suspicious IPs to firewall
./logreaper -a /var/log/auth.log --extract-ips | \
    xargs -I {} iptables -A INPUT -s {} -j DROP

# Correlate with RKHunt findings
./logreaper -s /var/log/syslog | grep -f <(rkhunt --list-iocs)

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🛠️ Build Options

# Standard build
make

# Build with debug symbols
make DEBUG=1

# Build with PCRE2 regex (faster patterns)
make PCRE2=1

# Build static binary
make STATIC=1

# Cross-compile for ARM64
make ARCH=aarch64

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📁 Project Structure

nullsec-logreaper/
├── src/
│   ├── main.c           # Entry point, arg parsing
│   ├── parser.c         # Log format parsers
│   ├── analyzer.c       # Pattern matching engine
│   ├── timeline.c       # Event correlation
│   ├── output.c         # Report generation
│   ├── patterns.h       # Detection signatures
│   └── utils.c          # Helper functions
├── patterns/
│   ├── auth.rules       # Authentication patterns
│   ├── web.rules        # Web attack signatures
│   └── system.rules     # System anomaly patterns
├── Makefile
├── LICENSE
└── README.md

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🔗 NullSec Toolkit Integration

LogReaper works seamlessly with other NullSec tools:

Tool	Integration
RKHunt	Correlate rootkit indicators with log anomalies
Specter	Feed extracted IOCs for threat intelligence
NetSniff	Combine network + log analysis
MemScan	Timeline memory artifacts with system logs

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📜 License

MIT License - See LICENSE for details.

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Part of the NullSec Toolkit

"From logs to leads."