Acquire an authenticated session THROUGH MFA/OTP on an in-scope target and emit a reusable session artifact (Playwright storageState + Bearer) so executors can test the post-auth attack surface. Use when the highest-value authenticated classes (BOLA/IDOR/mass-assignment/injection on the real data APIs) are blocked because login is gated by SMS-OTP or TOTP MFA. Distinct from the authentication skill (which ATTACKS auth); this one legitimately authenticates and hands the session to the rest of the engagement.
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On financial and multi-tenant targets the login is gated by SMS OTP / TOTP MFA that an autonomous run cannot satisfy, so the post-auth surface (BOLA/IDOR/mass-assignment/injection on the real data APIs, session handling, API pivots) silently collapses to pre-auth findings only. This skill's job is narrow and concrete: get one legitimate authenticated session and hand it to the executors as a reusable artifact. It does not attack the auth mechanism — see authentication for that.
Emit both, into the engagement's OUTPUT_DIR, referenced BY NAME (never inline secrets — credential-loading.md):
OUTPUT_DIR/<asset>/session/storageState.json — the Playwright storage state (cookies + localStorage) for browser-driven post-auth testing.OUTPUT_DIR/<asset>/session/bearer.txt — the raw access/ID token (+ its expires_at) for direct API replay.Executors consume these exactly like any env-loaded secret: the scope file's creds_env names the realm, and the session path is passed as a file reference, so no token is ever written into a prompt, experiments.md, or attack-chain.md. Re-run this skill when the token expires (record expires_at; refresh rather than re-login where a refresh token exists).
| Mode | When | How |
|---|---|---|
| TOTP-from-seed | The client shared the TOTP secret (Base32 seed) for a test account | Generate the current code deterministically with tools/totp_now.py <BASE32_SEED>, submit it in the login flow. Fully autonomous, repeatable. |
| Explicit-OTP | The operator can read a one-time code (SMS/email/authenticator) at run time | Drive login to the OTP prompt, the operator supplies the code once, continue. |
| Human-in-the-loop resume | OTP arrives out-of-band and the run must pause | Persist the pre-OTP browser context, pause; the operator completes the challenge; resume and capture storageState. |
Detailed per-IdP flows are in reference/session-acquisition.md: Auth0, Okta, Amazon Cognito (SRP auth + the UNSIGNED unauthenticated-posture check), and Descope. Each recipe ends by exporting storageState.json + bearer.txt in the contract above.
If no test account / OTP seed is available and no OTP can be relayed, the realm's post-auth surface is untestable through no fault of the tester. Record it honestly instead of a fabricated NA or a silent miss:
reports/client-input-requests/CIR-NNN.md naming exactly what's needed ("needs test account / OTP seed / allowlist for <realm>").BLOCKED_REASON in attack-chain.md.status:"deferred" in coverage.json, each carrying deferral_reason + client_input_request (the CIR path) — see coverage-matrix.md. The deterministic gate then discloses the deferred surface in the report rather than hiding it, and only the parent orchestrator (via coverage_gate.py --accept-deferrals) may finalize a substantiated-deferred engagement. A scope that is entirely auth-gated never completes.The preflight cred-reach probe (preflight-checklist.md, Phase-1 gate) is what triggers this path: present creds are not working creds; verify reachability per realm before spawning post-auth executors.
creds_env, which assets are behind them, roe.reversible_writes for the test tenant./.well-known/openid-configuration / SDK bundle) → pick the recipe.storageState.json + bearer.txt.experiments.md, attack-chain.md, or any tools/*.md — reference the artifact file by path only.authentication finding, not session acquisition.covered/NA — mark it deferred with a filed CIR so the gate discloses it.roe.reversible_writes (create-then-delete only in your own test tenant).reference/session-acquisition.md — per-IdP acquisition recipes (Auth0 / Okta / Cognito / Descope) + the storageState/Bearer export.tools/totp_now.py — stdlib RFC-6238 TOTP generator (the TOTP-from-seed mode).No reviews yet. Tell others what you thought.
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