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