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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
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API Reference: Detecting Container Drift at Runtime
Docker SDK for Python
import docker
client = docker.from_env()
# List running containers
containers = client.containers.list()
# Get container details
container = client.containers.get("container_id")
container.attrs # full inspection dict
container.image.id # image SHA256
container.image.tags # ['app:v1.0']
# Filesystem diff (vs original image)
diff = container.diff()
# Returns: [{"Path": "/tmp/new_file", "Kind": 1}]
# Kind: 0=Modified, 1=Added, 2=Deleted
# Container inspection fields
container.attrs["HostConfig"]["Privileged"] # bool
container.attrs["HostConfig"]["ReadonlyRootfs"] # bool
container.attrs["Config"]["Image"] # image reference
Docker CLI Commands
# Filesystem changes since creation
docker diff <container> # A=Added, C=Changed, D=Deleted
# Running processes
docker top <container> -eo pid,user,comm,args
# Image digest verification
docker inspect --format='{{.Image}}' <container>
Falco Drift Detection Rules
# Detect binary not in original image
condition: spawned_process and container and proc.is_exe_upper_layer = true
# Detect package manager usage
condition: spawned_process and container and proc.name in (apt, yum, pip, npm)
# Detect shell spawn
condition: spawned_process and container and proc.name in (bash, sh, dash)
Kubernetes Security Context
securityContext:
readOnlyRootFilesystem: true # prevent drift
allowPrivilegeEscalation: false
runAsNonRoot: true
capabilities:
drop: ["ALL"]
Drift Severity Classification
| Indicator | Severity |
|---|---|
| Privileged container | CRITICAL |
| Sensitive file modified (/etc/shadow) | CRITICAL |
| Binary added to system path | HIGH |
| Package manager executed | HIGH |
| Root shell active | MEDIUM |
| Mutable root filesystem | MEDIUM |
CLI Usage
python agent.py --container my-app-container
python agent.py --container abc123 --all