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