hunt-mfa-bypass SKILL.md skillA
hunt-mfa-bypass from novaestellar/novahaku is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add novaestellar/novahaku/hunt-mfa-bypass@git:20260910.546fe86Pins git:20260910.546fe86 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- novaestellar/novahaku
- Path
testing/hunt/hunt-mfa-bypass/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260910.546fe86, committed Sep 10, 2026
- First version recorded
- Sep 3, 2026
- Size
- 8,739 bytes
- Repository stars
- 28
- License
- MIT
Hunt MFA / 2FA bypass — 7 distinct patterns. (1) MFA not enforced on sensitive endpoints (password change, email change accept without MFA challenge), (2) MFA-step skip via direct navigation to post-login URL, (3) MFA-token replay (same code accepted twice), (4) brute-force the 6-digit OTP without rate limit (10^6 attempts at server speed), (5) race condition on OTP validation, (6) recovery-code dump via /api/me, (7) backup factor downgrade (SMS factor with no rate limit). Plus the chain…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## Autonomous Testing Priority **Try workflow bypasses before brute force — they're faster and more likely to succeed.** **Pattern 1 — Skip the MFA step entirely (most automatable):** 1. Login with valid credentials → receive a "pre-MFA" session state 2. Without completing MFA, directly access a protected resource (`/dashboard`, `/api/me`, `/account/profile`) 3. If the response returns user data → MFA is enforced only in the UI, not server-side = Critical **Pattern 2 — OTP replay (reuse a consumed code):** 1. Complete a valid MFA flow to get a working OTP 2. Log out, log in again with the same credentials 3. Submit the same OTP again 4. If accepted → OTP is not invalidated after use **Pattern 3 — Submit obviously wrong OTP, observe response:** Try submitting `000000` or `123456`. If the response is 200 or returns a session token, OTP validation is broken or client-side only. **Pattern 4 — Partial / incremental validation (prefix oracle):** If a guessed full code is rejected, test whether the server validates the OTP **prefix-by-prefix** instead of all-or-nothing. Submit a short partial code and compare responses: …
Read the whole file at its exact version.
How to install
mdr add novaestellar/novahaku/hunt-mfa-bypass@sha256:d90fb6bc88a8126eThe line at the top of this page pins the label git:20260910.546fe86, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_637u6zvsexdxkrgq)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 3, 2026 and Sep 10, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.546fe86 latest | 2026-09-10 | 546fe86 | 8,739 B | A | view · diff |
| git:20260903.29924dd | 2026-09-03 | 29924dd | 8,751 B | A | view · diff |
| git:20260903.fa855c4 | 2026-09-03 | fa855c4 | 8,722 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8739 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
novaestellar/novahaku · 28 stars · license MIT · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_637u6zvsexdxkrgq GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-mfa-bypass GET https://markdownregistry.com/api/v1/blob/d90fb6bc88a8126e34efa360d4728df12bf3ce7a716c07382747850a350a3f22
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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