feat(attack-paths): Phase 10 — Attack Paths & Advanced Purple Team [FASE-10]
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Models (5 tables):
- AttackPath: named reusable attack scenario with template flag
- AttackPathStep: ordered kill-chain step (technique + test link)
- AttackPathExecution: a run with Red/Blue leads, timing, stored metrics
- AttackPathStepResult: per-step detected/not_detected/skipped result
- TimelineEntry: timestamped Red/Blue/system actions for MTTD/MTTR
Migration b036atk: raw SQL to avoid SQLAlchemy DDL hook issues
Service (attack_path_service.py):
- Full CRUD for paths + steps (add, update, delete, reorder)
- Execution lifecycle: create → start → execute steps → complete/abort
- Pre-creates pending step results on execution creation
- Auto-adds system timeline entries on key state transitions
- complete_execution() computes: detection_rate, mttd_seconds,
furthest_undetected_step, detected/not_detected/skipped counts
- get_kill_chain_metrics(): per-step breakdown + phase summary
Router /api/v1/attack-paths (20 endpoints):
POST/GET/PATCH/DELETE attack paths
GET/POST/PATCH/DELETE steps + reorder
POST/GET executions per path
GET/POST/start/complete/abort executions
POST/GET step results
POST/GET timeline entries
GET kill-chain metrics
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
kitos
553
backend/app/services/attack_path_service.py
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553
backend/app/services/attack_path_service.py
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"""Phase 10: Attack Path CRUD service."""
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import logging
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from datetime import datetime
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from typing import Optional
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from uuid import UUID
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from sqlalchemy.orm import Session, joinedload
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from app.models.attack_path import (
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AttackPath, AttackPathStep, AttackPathExecution,
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AttackPathStepResult, TimelineEntry,
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ExecutionStatus, StepResultStatus, TimelineActorSide, TimelineEntryType,
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)
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from app.domain.exceptions import EntityNotFoundError
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from app.services import audit_service
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logger = logging.getLogger(__name__)
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def _now() -> datetime:
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return datetime.utcnow()
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# ── Attack Path CRUD ──────────────────────────────────────────────────────────
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def create_attack_path(db: Session, data: dict, user_id: UUID) -> AttackPath:
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path = AttackPath(
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name=data["name"],
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description=data.get("description"),
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objective=data.get("objective"),
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is_template=data.get("is_template", False),
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threat_actor_id=data.get("threat_actor_id"),
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tags=data.get("tags") or [],
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created_by=user_id,
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)
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db.add(path)
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db.commit()
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db.refresh(path)
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audit_service.log_action(
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db, user_id, "ATTACK_PATH_CREATED", "attack_path", str(path.id),
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details={"name": path.name, "is_template": path.is_template},
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)
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return path
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def get_attack_path(db: Session, path_id: UUID) -> AttackPath:
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path = (
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db.query(AttackPath)
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.options(joinedload(AttackPath.steps))
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.filter(AttackPath.id == path_id)
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.first()
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)
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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return path
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def list_attack_paths(
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db: Session,
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is_template: Optional[bool] = None,
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technique_id: Optional[UUID] = None,
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is_active: Optional[bool] = True,
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) -> list[AttackPath]:
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q = db.query(AttackPath)
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if is_active is not None:
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q = q.filter(AttackPath.is_active == is_active)
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if is_template is not None:
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q = q.filter(AttackPath.is_template == is_template)
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if technique_id:
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q = q.join(AttackPathStep).filter(AttackPathStep.technique_id == technique_id)
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return q.order_by(AttackPath.created_at.desc()).all()
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def update_attack_path(db: Session, path_id: UUID, data: dict, user_id: UUID) -> AttackPath:
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path = db.query(AttackPath).filter(AttackPath.id == path_id).first()
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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for k, v in data.items():
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if v is not None and hasattr(path, k):
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setattr(path, k, v)
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path.updated_at = _now()
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db.commit()
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db.refresh(path)
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return path
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def delete_attack_path(db: Session, path_id: UUID, user_id: UUID) -> None:
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path = db.query(AttackPath).filter(AttackPath.id == path_id).first()
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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path.is_active = False
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path.updated_at = _now()
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db.commit()
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audit_service.log_action(db, user_id, "ATTACK_PATH_ARCHIVED", "attack_path", str(path_id))
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# ── Steps CRUD ────────────────────────────────────────────────────────────────
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def add_step(db: Session, path_id: UUID, data: dict, user_id: UUID) -> AttackPathStep:
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path = db.query(AttackPath).filter(AttackPath.id == path_id).first()
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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# Auto-assign order_index if not provided
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if data.get("order_index") is None:
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max_idx = db.query(AttackPathStep).filter(
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AttackPathStep.attack_path_id == path_id
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).count()
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data["order_index"] = max_idx
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step = AttackPathStep(
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attack_path_id=path_id,
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order_index=data.get("order_index", 0),
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kill_chain_phase=data.get("kill_chain_phase"),
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technique_id=data.get("technique_id"),
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test_id=data.get("test_id"),
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name=data.get("name"),
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description=data.get("description"),
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expected_detection=data.get("expected_detection", True),
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notes=data.get("notes"),
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)
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db.add(step)
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path.updated_at = _now()
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db.commit()
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db.refresh(step)
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return step
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def update_step(db: Session, step_id: UUID, data: dict, user_id: UUID) -> AttackPathStep:
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step = db.query(AttackPathStep).filter(AttackPathStep.id == step_id).first()
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if not step:
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raise EntityNotFoundError("AttackPathStep", str(step_id))
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for k, v in data.items():
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if v is not None and hasattr(step, k):
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setattr(step, k, v)
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db.commit()
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db.refresh(step)
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return step
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def delete_step(db: Session, step_id: UUID, user_id: UUID) -> None:
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step = db.query(AttackPathStep).filter(AttackPathStep.id == step_id).first()
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if not step:
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raise EntityNotFoundError("AttackPathStep", str(step_id))
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db.delete(step)
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db.commit()
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def reorder_steps(db: Session, path_id: UUID, step_ids: list[UUID], user_id: UUID) -> list[AttackPathStep]:
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"""Reorder steps by providing ordered list of step IDs."""
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path = db.query(AttackPath).filter(AttackPath.id == path_id).first()
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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for idx, step_id in enumerate(step_ids):
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db.query(AttackPathStep).filter(
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AttackPathStep.id == step_id,
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AttackPathStep.attack_path_id == path_id,
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).update({"order_index": idx})
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path.updated_at = _now()
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db.commit()
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return (
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db.query(AttackPathStep)
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.filter(AttackPathStep.attack_path_id == path_id)
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.order_by(AttackPathStep.order_index)
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.all()
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)
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# ── Executions ────────────────────────────────────────────────────────────────
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def create_execution(
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db: Session, path_id: UUID, data: dict, user_id: UUID
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) -> AttackPathExecution:
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path = db.query(AttackPath).filter(AttackPath.id == path_id).first()
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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execution = AttackPathExecution(
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attack_path_id=path_id,
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status=ExecutionStatus.planned,
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environment=data.get("environment"),
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red_team_lead=data.get("red_team_lead"),
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blue_team_lead=data.get("blue_team_lead"),
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notes=data.get("notes"),
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started_by=user_id,
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)
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db.add(execution)
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db.flush()
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# Pre-create pending step results for every step in the path
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steps = (
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db.query(AttackPathStep)
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.filter(AttackPathStep.attack_path_id == path_id)
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.order_by(AttackPathStep.order_index)
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.all()
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)
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for step in steps:
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result = AttackPathStepResult(
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execution_id=execution.id,
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step_id=step.id,
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step_order=step.order_index,
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status=StepResultStatus.pending,
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)
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db.add(result)
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db.commit()
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db.refresh(execution)
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# Auto-add system timeline entry
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_add_system_entry(
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db, execution.id,
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entry_type=TimelineEntryType.phase_transition,
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content=f"Execution created for '{path.name}' with {len(steps)} steps.",
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)
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audit_service.log_action(
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db, user_id, "ATTACK_PATH_EXECUTION_STARTED", "attack_path_execution",
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str(execution.id),
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details={"path_id": str(path_id), "path_name": path.name, "steps": len(steps)},
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)
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return execution
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def get_execution(db: Session, execution_id: UUID) -> AttackPathExecution:
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ex = (
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db.query(AttackPathExecution)
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.options(
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joinedload(AttackPathExecution.step_results),
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joinedload(AttackPathExecution.timeline),
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)
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.filter(AttackPathExecution.id == execution_id)
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.first()
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)
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if not ex:
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raise EntityNotFoundError("AttackPathExecution", str(execution_id))
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return ex
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def list_executions(db: Session, path_id: UUID) -> list[AttackPathExecution]:
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path = db.query(AttackPath).filter(AttackPath.id == path_id).first()
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if not path:
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raise EntityNotFoundError("AttackPath", str(path_id))
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return (
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db.query(AttackPathExecution)
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.filter(AttackPathExecution.attack_path_id == path_id)
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.order_by(AttackPathExecution.created_at.desc())
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.all()
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)
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def start_execution(db: Session, execution_id: UUID, user_id: UUID) -> AttackPathExecution:
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ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
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if not ex:
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raise EntityNotFoundError("AttackPathExecution", str(execution_id))
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if ex.status not in (ExecutionStatus.planned,):
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from fastapi import HTTPException
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raise HTTPException(400, "Execution is not in 'planned' state")
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ex.status = ExecutionStatus.in_progress
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ex.started_at = _now()
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db.commit()
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db.refresh(ex)
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_add_system_entry(db, execution_id, TimelineEntryType.phase_transition,
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"Execution started.", actor_id=user_id, actor_side=TimelineActorSide.system)
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return ex
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# ── Step Execution ────────────────────────────────────────────────────────────
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def execute_step(
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db: Session,
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execution_id: UUID,
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step_id: UUID,
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data: dict,
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user_id: UUID,
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) -> AttackPathStepResult:
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"""Record the result of executing one step."""
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ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
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if not ex:
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raise EntityNotFoundError("AttackPathExecution", str(execution_id))
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if ex.status not in (ExecutionStatus.in_progress, ExecutionStatus.planned):
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from fastapi import HTTPException
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raise HTTPException(400, "Execution must be in_progress to record step results")
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# Auto-start if still planned
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if ex.status == ExecutionStatus.planned:
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ex.status = ExecutionStatus.in_progress
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ex.started_at = _now()
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result = (
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db.query(AttackPathStepResult)
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.filter(
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AttackPathStepResult.execution_id == execution_id,
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AttackPathStepResult.step_id == step_id,
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)
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.first()
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)
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if not result:
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# Create on-the-fly if step was added after execution started
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step = db.query(AttackPathStep).filter(AttackPathStep.id == step_id).first()
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if not step:
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raise EntityNotFoundError("AttackPathStep", str(step_id))
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result = AttackPathStepResult(
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execution_id=execution_id,
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step_id=step_id,
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step_order=step.order_index,
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)
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db.add(result)
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now = _now()
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new_status = StepResultStatus(data["status"])
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result.status = new_status
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result.executed_by = user_id
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result.executed_at = data.get("executed_at") or now
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result.notes = data.get("notes")
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result.evidence_ids = [str(e) for e in (data.get("evidence_ids") or [])]
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result.detection_asset_id = data.get("detection_asset_id")
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if new_status == StepResultStatus.detected:
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result.detected_at = data.get("detected_at") or now
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if result.executed_at:
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delta = (result.detected_at - result.executed_at).total_seconds()
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result.time_to_detect_seconds = max(0.0, delta)
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db.commit()
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db.refresh(result)
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# Add timeline entry
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step_obj = db.query(AttackPathStep).filter(AttackPathStep.id == step_id).first()
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step_name = step_obj.name or (step_obj.kill_chain_phase or "Unknown step")
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actor_side = TimelineActorSide.red if new_status != StepResultStatus.detected else TimelineActorSide.blue
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entry_type = (
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TimelineEntryType.detection if new_status == StepResultStatus.detected
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else TimelineEntryType.action
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)
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content = (
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f"Step '{step_name}' marked as {new_status.value}."
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+ (f" Detected in {result.time_to_detect_seconds:.0f}s." if result.time_to_detect_seconds else "")
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)
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_add_system_entry(
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db, execution_id, entry_type, content,
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actor_id=user_id, actor_side=actor_side, step_id=step_id,
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)
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return result
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# ── Completion & Metrics ──────────────────────────────────────────────────────
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def complete_execution(db: Session, execution_id: UUID, user_id: UUID) -> AttackPathExecution:
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"""Mark execution complete and compute all kill-chain metrics."""
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ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
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if not ex:
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raise EntityNotFoundError("AttackPathExecution", str(execution_id))
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results = (
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db.query(AttackPathStepResult)
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.filter(AttackPathStepResult.execution_id == execution_id)
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.order_by(AttackPathStepResult.step_order)
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.all()
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)
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total = len(results)
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detected = sum(1 for r in results if r.status == StepResultStatus.detected)
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not_detected = sum(1 for r in results if r.status == StepResultStatus.not_detected)
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skipped = sum(1 for r in results if r.status == StepResultStatus.skipped)
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detection_rate = (detected / total) if total > 0 else 0.0
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ttds = [r.time_to_detect_seconds for r in results
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if r.time_to_detect_seconds is not None]
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mttd = (sum(ttds) / len(ttds)) if ttds else None
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# Furthest undetected step (highest order_index with not_detected status)
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undetected = [r for r in results if r.status == StepResultStatus.not_detected]
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furthest = max((r.step_order for r in undetected), default=None)
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ex.status = ExecutionStatus.completed
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ex.completed_at = _now()
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ex.total_steps = total
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ex.detected_steps = detected
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ex.not_detected_steps = not_detected
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ex.skipped_steps = skipped
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ex.detection_rate = round(detection_rate, 4)
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ex.mttd_seconds = round(mttd, 1) if mttd is not None else None
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ex.furthest_undetected_step = furthest
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db.commit()
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db.refresh(ex)
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_add_system_entry(
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db, execution_id, TimelineEntryType.phase_transition,
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f"Execution completed. Detection rate: {detection_rate:.0%}. "
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f"Detected {detected}/{total} steps. "
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+ (f"MTTD: {mttd:.0f}s." if mttd else ""),
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actor_id=user_id, actor_side=TimelineActorSide.system,
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)
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audit_service.log_action(
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db, user_id, "ATTACK_PATH_EXECUTION_COMPLETED", "attack_path_execution",
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str(execution_id),
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details={"detection_rate": detection_rate, "mttd_seconds": mttd,
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"detected": detected, "total": total},
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)
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return ex
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def abort_execution(db: Session, execution_id: UUID, user_id: UUID) -> AttackPathExecution:
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ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
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if not ex:
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raise EntityNotFoundError("AttackPathExecution", str(execution_id))
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ex.status = ExecutionStatus.aborted
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ex.completed_at = _now()
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db.commit()
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db.refresh(ex)
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_add_system_entry(db, execution_id, TimelineEntryType.flag, "Execution aborted.",
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actor_id=user_id, actor_side=TimelineActorSide.system)
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return ex
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# ── Timeline ──────────────────────────────────────────────────────────────────
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def add_timeline_entry(
|
||||
db: Session, execution_id: UUID, data: dict, user_id: UUID
|
||||
) -> TimelineEntry:
|
||||
ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
|
||||
if not ex:
|
||||
raise EntityNotFoundError("AttackPathExecution", str(execution_id))
|
||||
|
||||
entry = TimelineEntry(
|
||||
execution_id=execution_id,
|
||||
step_id=data.get("step_id"),
|
||||
timestamp=data.get("timestamp") or _now(),
|
||||
actor_side=TimelineActorSide(data["actor_side"]),
|
||||
actor_id=user_id,
|
||||
entry_type=TimelineEntryType(data["entry_type"]),
|
||||
content=data["content"],
|
||||
extra=data.get("extra"),
|
||||
)
|
||||
db.add(entry)
|
||||
db.commit()
|
||||
db.refresh(entry)
|
||||
return entry
|
||||
|
||||
|
||||
def get_timeline(db: Session, execution_id: UUID) -> list[TimelineEntry]:
|
||||
ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
|
||||
if not ex:
|
||||
raise EntityNotFoundError("AttackPathExecution", str(execution_id))
|
||||
return (
|
||||
db.query(TimelineEntry)
|
||||
.filter(TimelineEntry.execution_id == execution_id)
|
||||
.order_by(TimelineEntry.timestamp.asc())
|
||||
.all()
|
||||
)
|
||||
|
||||
|
||||
# ── Kill-Chain Metrics ────────────────────────────────────────────────────────
|
||||
|
||||
def get_kill_chain_metrics(db: Session, execution_id: UUID) -> dict:
|
||||
ex = db.query(AttackPathExecution).filter(AttackPathExecution.id == execution_id).first()
|
||||
if not ex:
|
||||
raise EntityNotFoundError("AttackPathExecution", str(execution_id))
|
||||
|
||||
results = (
|
||||
db.query(AttackPathStepResult)
|
||||
.filter(AttackPathStepResult.execution_id == execution_id)
|
||||
.order_by(AttackPathStepResult.step_order)
|
||||
.all()
|
||||
)
|
||||
|
||||
step_breakdown = []
|
||||
phase_detected: dict[str, list] = {}
|
||||
|
||||
for r in results:
|
||||
step = db.query(AttackPathStep).filter(AttackPathStep.id == r.step_id).first()
|
||||
phase = step.kill_chain_phase if step else None
|
||||
entry = {
|
||||
"step_id": str(r.step_id),
|
||||
"step_order": r.step_order,
|
||||
"step_name": step.name if step else None,
|
||||
"kill_chain_phase": phase,
|
||||
"status": r.status.value if hasattr(r.status, "value") else r.status,
|
||||
"executed_at": r.executed_at.isoformat() if r.executed_at else None,
|
||||
"detected_at": r.detected_at.isoformat() if r.detected_at else None,
|
||||
"time_to_detect_seconds": r.time_to_detect_seconds,
|
||||
"detection_asset_id": str(r.detection_asset_id) if r.detection_asset_id else None,
|
||||
}
|
||||
step_breakdown.append(entry)
|
||||
if phase:
|
||||
phase_detected.setdefault(phase, []).append(
|
||||
r.status == StepResultStatus.detected
|
||||
)
|
||||
|
||||
phase_summary = {
|
||||
phase: {
|
||||
"total": len(v),
|
||||
"detected": sum(v),
|
||||
"detection_rate": round(sum(v) / len(v), 3) if v else 0.0,
|
||||
}
|
||||
for phase, v in phase_detected.items()
|
||||
}
|
||||
|
||||
# Furthest undetected phase
|
||||
furthest_undetected_phase = None
|
||||
if ex.furthest_undetected_step is not None:
|
||||
for r in reversed(results):
|
||||
if r.step_order == ex.furthest_undetected_step:
|
||||
step = db.query(AttackPathStep).filter(AttackPathStep.id == r.step_id).first()
|
||||
if step:
|
||||
furthest_undetected_phase = step.kill_chain_phase
|
||||
break
|
||||
|
||||
return {
|
||||
"execution_id": str(execution_id),
|
||||
"total_steps": ex.total_steps or len(results),
|
||||
"detected_steps": ex.detected_steps or 0,
|
||||
"not_detected_steps": ex.not_detected_steps or 0,
|
||||
"skipped_steps": ex.skipped_steps or 0,
|
||||
"detection_rate": ex.detection_rate or 0.0,
|
||||
"mttd_seconds": ex.mttd_seconds,
|
||||
"furthest_undetected_step": ex.furthest_undetected_step,
|
||||
"furthest_undetected_phase": furthest_undetected_phase,
|
||||
"step_breakdown": step_breakdown,
|
||||
"phase_summary": phase_summary,
|
||||
}
|
||||
|
||||
|
||||
# ── Helper ────────────────────────────────────────────────────────────────────
|
||||
|
||||
def _add_system_entry(
|
||||
db: Session,
|
||||
execution_id: UUID,
|
||||
entry_type: TimelineEntryType,
|
||||
content: str,
|
||||
actor_id: Optional[UUID] = None,
|
||||
actor_side: TimelineActorSide = TimelineActorSide.system,
|
||||
step_id: Optional[UUID] = None,
|
||||
) -> None:
|
||||
entry = TimelineEntry(
|
||||
execution_id=execution_id,
|
||||
step_id=step_id,
|
||||
timestamp=_now(),
|
||||
actor_side=actor_side,
|
||||
actor_id=actor_id,
|
||||
entry_type=entry_type,
|
||||
content=content,
|
||||
)
|
||||
db.add(entry)
|
||||
db.commit()
|
||||
Reference in New Issue
Block a user