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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
1.6 KiB
1.6 KiB
API Reference: Detecting Golden Ticket Attacks in Kerberos Logs
Key Windows Event IDs
| Event ID | Description | Golden Ticket Signal |
|---|---|---|
| 4768 | TGT Requested (AS-REQ) | RC4 encryption, anomalous domain |
| 4769 | TGS Requested (TGS-REQ) | No prior 4768, forged TGT |
| 4771 | Kerberos Pre-Auth Failed | Non-existent account (0x6) |
Kerberos Encryption Types
| Code | Algorithm | Suspicion |
|---|---|---|
| 0x11 | AES128-CTS | Normal (modern) |
| 0x12 | AES256-CTS | Normal (preferred) |
| 0x17 | RC4-HMAC | Suspicious (Mimikatz default) |
| 0x18 | RC4-HMAC-EXP | Suspicious |
python-evtx Usage
import Evtx.Evtx as evtx
with evtx.Evtx("Security.evtx") as log:
for record in log.records():
xml = record.xml()
# Parse Events 4768, 4769, 4771
# Check TicketEncryptionType, TargetUserName
Splunk SPL Detection
index=wineventlog EventCode=4769
| join type=left TargetUserName [
search index=wineventlog EventCode=4768
| rename TargetUserName as tgt_user
]
| where isnull(tgt_user)
| table _time TargetUserName ServiceName IpAddress Computer
KQL (Microsoft Sentinel)
SecurityEvent
| where EventID == 4768
| where TicketEncryptionType in ("0x17", "0x18")
| where TargetUserName !endswith "$"
| project TimeGenerated, TargetUserName, IpAddress, TicketEncryptionType
Mimikatz Golden Ticket Command
kerberos::golden /user:admin /domain:corp.local /sid:S-1-5-21-... /krbtgt:hash /ptt
CLI Usage
python agent.py --security-log Security.evtx --domain corp.local
python agent.py --generate-sigma