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mukul975
27c6414ca5
Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
115 lines
3.4 KiB
Markdown
115 lines
3.4 KiB
Markdown
# API Reference: Linux Forensic Artifact Analysis Tools
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## Key Artifact Locations
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| Artifact | Path | Description |
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|----------|------|-------------|
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| Auth logs | `/var/log/auth.log` (Debian) `/var/log/secure` (RHEL) | Authentication events |
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| Login history | `/var/log/wtmp` | Successful logins (binary, use `last`) |
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| Failed logins | `/var/log/btmp` | Failed logins (binary, use `lastb`) |
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| Bash history | `~/.bash_history` | Command history per user |
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| SSH keys | `~/.ssh/authorized_keys` | Authorized public keys |
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| Crontab | `/etc/crontab`, `/var/spool/cron/crontabs/` | Scheduled tasks |
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| Systemd services | `/etc/systemd/system/` | Service definitions |
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| LD_PRELOAD | `/etc/ld.so.preload` | Shared library preloading |
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| SUID binaries | `find / -perm -4000` | Setuid executables |
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## last / lastb - Login History
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### Syntax
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```bash
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last -f /var/log/wtmp # Successful logins
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lastb -f /var/log/btmp # Failed logins
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last -i -f /var/log/wtmp # Show IP addresses
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last -s 2024-01-15 -t 2024-01-20 # Date range filter
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```
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### Output Format
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```
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user pts/0 192.168.1.50 Mon Jan 15 09:00 still logged in
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```
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## chkrootkit - Rootkit Scanner
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### Syntax
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```bash
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chkrootkit # Full scan
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chkrootkit -r /mnt/evidence # Scan mounted evidence
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chkrootkit -q # Quiet (infected only)
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```
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## rkhunter - Rootkit Hunter
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### Syntax
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```bash
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rkhunter --check # Full system check
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rkhunter --check --rootdir /mnt/ev # Check evidence root
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rkhunter --list tests # List available tests
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rkhunter --propupd # Update file properties DB
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```
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### Check Categories
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| Check | Description |
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|-------|-------------|
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| `rootkits` | Known rootkit signatures |
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| `trojans` | Trojanized system binaries |
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| `properties` | File permission anomalies |
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| `filesystem` | Hidden files and directories |
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## auditd Log Parsing
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### ausearch Syntax
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```bash
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ausearch -m execve -ts recent # Recent command execution
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ausearch -m USER_AUTH -ts today # Authentication events
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ausearch -k suspicious_activity # Custom audit rule key
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ausearch -ua 0 -ts today # Root user actions
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```
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### aureport Syntax
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```bash
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aureport --auth # Authentication summary
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aureport --login # Login summary
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aureport --file # File access summary
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aureport --summary # Overall summary
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```
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## osquery - SQL-based System Queries
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### Syntax
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```bash
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osqueryi "SELECT * FROM users WHERE uid = 0"
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osqueryi "SELECT * FROM crontab"
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osqueryi "SELECT * FROM authorized_keys"
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osqueryi "SELECT * FROM suid_bin"
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osqueryi "SELECT * FROM process_open_sockets"
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```
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### Key Tables
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| Table | Content |
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|-------|---------|
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| `users` | User account information |
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| `crontab` | Cron job entries |
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| `authorized_keys` | SSH authorized keys |
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| `suid_bin` | SUID binaries |
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| `process_open_sockets` | Network connections by process |
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| `shell_history` | Command history entries |
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## Plaso / log2timeline - Super Timeline
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### Syntax
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```bash
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log2timeline.py /cases/timeline.plaso /mnt/evidence
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psort.py -o l2tcsv /cases/timeline.plaso > timeline.csv
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psort.py -o l2tcsv /cases/timeline.plaso "date > '2024-01-15'"
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```
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## AIDE - File Integrity
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### Syntax
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```bash
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aide --init # Initialize database
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aide --check # Check for changes
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aide --compare # Compare databases
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```
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