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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
2.3 KiB
2.3 KiB
API Reference: Detecting Container Escape with Falco Rules
Falco CLI
falco --version # check version
falco --validate /path/to/rules.yaml # validate rules syntax
falco -r /etc/falco/rules.d/escape.yaml # load specific rules
falco --list # list all available fields
falco --list-events # list supported syscalls
Falco Rule Syntax
- rule: <name>
desc: <description>
condition: <filter expression>
output: <alert message with fields>
priority: <Emergency|Alert|Critical|Error|Warning|Notice|Informational|Debug>
tags: [tag1, tag2]
enabled: true
Key Falco Filter Fields
| Field | Description |
|---|---|
container |
True if event is from a container |
spawned_process |
True if new process spawned |
proc.name |
Process name |
proc.cmdline |
Full command line |
proc.pname |
Parent process name |
fd.name |
File descriptor name/path |
container.name |
Container name |
container.image.repository |
Image repository |
container.privileged |
True if privileged |
proc.is_exe_upper_layer |
Binary not in original image |
evt.type |
Syscall type (setns, unshare, mount) |
Falco JSON Output Format
{
"time": "2024-01-15T10:30:00.000Z",
"rule": "Container Escape Binary Execution",
"priority": "Critical",
"source": "syscall",
"output": "Escape binary in container...",
"output_fields": {
"user.name": "root",
"proc.cmdline": "nsenter -t 1 -m -u -i -n",
"container.name": "attacker-pod"
},
"tags": ["container", "escape", "T1611"]
}
Falcosidekick Alert Routing
config:
slack:
webhookurl: "https://hooks.slack.com/services/XXX"
minimumpriority: "critical"
elasticsearch:
hostport: "https://es:9200"
index: "falco-alerts"
Helm Deployment
helm repo add falcosecurity https://falcosecurity.github.io/charts
helm install falco falcosecurity/falco \
--namespace falco --create-namespace \
--set driver.kind=ebpf \
--set falcosidekick.enabled=true
CLI Usage
python agent.py --check-status
python agent.py --validate-rules /etc/falco/rules.d/escape.yaml
python agent.py --parse-alerts /var/log/falco/events.json --min-priority Warning
python agent.py --generate-rules > escape-rules.yaml