Three login endpoints under /api/v1/auth/ + dev-only CORS so the Vite
frontend can drive the session cookie.
- POST /login validates local credentials and sets a Flask session cookie.
Returns the CurrentUser shape on 200 (user_id, username=email,
display_name, role, permissions, groups). Uniform 401 invalid_credentials
on bad password or unknown user; a bcrypt round against a dummy hash runs
even on unknown users so the request timing does not enumerate accounts.
Audits an auth.login row and bumps user.last_login_at.
- POST /logout (login_required) clears the session, returns 204, audits an
auth.logout row.
- GET /me returns the current principal or 401 not_authenticated. Used by
the frontend at boot to rehydrate state.
Side wiring:
- LoginManager.unauthorized_handler emits the same {error, message} JSON
envelope so @login_required 401s match the rest of the API surface.
- api/_helpers gains `serialize_current_user(AuthUser) -> CurrentUser` and
`api_error(code, message, status)` — used by the auth blueprint and
available to follow-up endpoints.
- AuthUser carries display_name + user_type now; identity.load_user routes
through a new `authuser_from_orm()` helper that the login endpoint also
uses so /login and the user_loader produce identical shapes.
- Dev-only CORS via flask-cors on /api/*, gated on
MIMIC_ENV=development AND MIMIC_CORS_ORIGINS non-empty. Prod keeps
same-origin (reverse proxy fronts the SPA + API).
- LoginRequest + CurrentUser DTOs added to mimic.schemas.
No frontend-visible change to engagements (sprint-0 already shipped
created_by_id, audit log, F11 scope).
Mimic — backend
Sprint 0 skeleton. Python 3.12+ / Flask / SQLAlchemy 2 / Alembic / Pydantic 2.
Layout
backend/
├── src/mimic/
│ ├── app.py # Flask app factory + SocketIO init
│ ├── config.py # Pydantic Settings
│ ├── extensions.py # db, migrate, socketio, login_manager
│ ├── db/
│ │ ├── models/ # SQLAlchemy 2 typed models
│ │ ├── repositories/ # data access per aggregate
│ │ └── migrations/ # Alembic
│ ├── schemas/ # Pydantic 2 DTOs
│ ├── api/ # Flask blueprints (REST)
│ ├── ws/ # Flask-SocketIO namespaces
│ ├── connectors/ # C2Connector ABC + payload mapping
│ ├── orchestrator/ # run state machine (stub in sprint 0)
│ ├── templating/ # Jinja2 sandbox + regex_extract
│ ├── audit/ # append-only writer + rotation
│ ├── reporting/ # WeasyPrint builder (stub in sprint 0)
│ ├── rbac/ # group-based permission matrix (F11)
│ ├── importers/ # ATR + C2 journal (stub in sprint 0)
│ └── cli/ # mimic-cli (click)
└── tests/
├── unit/ # SQLite, pure logic
└── integration/ # testcontainers Postgres
Local dev
make install # uv venv + pip install -e .[dev]
make db-up # $(CONTAINER) compose up -d postgres (auto-detect docker|podman)
make db-bootstrap # one-time: create the mimic_audit_writer role (see below)
make db-migrate # alembic upgrade head
make run # flask run (debug)
make test # pytest unit
make test-int # pytest integration (testcontainers)
make lint # ruff + mypy strict
Audit writer role (dev)
mimic_audit_writer is provisioned by the Ansible playbook in production
(decision D-010). For local development, create it manually after make db-up:
# Substitute "podman" for "docker" if your runtime is Podman.
$(command -v docker || command -v podman) exec -it mimic-postgres \
psql -U mimic_app -d mimic \
-c "CREATE ROLE mimic_audit_writer LOGIN PASSWORD 'pick-a-dev-secret';"
Then expose the same secret in MIMIC_DATABASE_AUDIT_URL in your .env. The
Alembic migration grants the INSERT-only permission on audit_log against
this role; if it does not exist, the grant block is a no-op (idempotent).
What sprint 0 ships
- Full §8 data model + Alembic initial migration (Postgres-specific constraints: audit_log write-only role, soc_session hash, c2_credential Fernet column).
C2ConnectorABC + dataclasses +payload_typeenum + factory. No real Mythic/Home implementation (blocked on PR1/PR2).- Jinja2 SandboxedEnvironment +
regex_extractfilter (re2). - Local auth (bcrypt + Flask session) + group-based RBAC matching the F11 permission matrix.
- Flat CRUD on engagements / hosts / TTPs / scenarios.
- pytest baseline + testcontainers Postgres scaffolding.
Out of sprint 0
Orchestrator, WebSocket cockpit, real connectors, report generation, audit rotation.