novaestellar/novahaku · testing/hunt/hunt-race-condition/SKILL.md

hunt-race-condition skillA

hunt-race-condition is agent-read markdown (skill) from novaestellar/novahaku: Hunting skill for race condition vulnerabilities. Built from 12 public bug bounty reports including modern HTTP/2 single-packet attack cases (James Kettle DEF CON 2023 "Smashing the State Machine"; RyotaK / Flatt Security 10,000-request first-sequence-sync expansion 2024). Covers coupon double-redemption, gift-card double-spend, MFA-OTP-validate race, account-create race, faucet/crypto token double-mint, email-activation race, vote/upvote inflation, password-reset token race, rate-limit bypass v.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add novaestellar/novahaku/hunt-race-condition@git:20260910.546fe86
Exact content
mdr add novaestellar/novahaku/hunt-race-condition@sha256:49965893e3a77c19

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_hq5yzci7aabd6g2t.svg)](https://markdownregistry.com/a/art_hq5yzci7aabd6g2t)

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Versions

versioncommittedcommitsizeaudit
git:20260910.546fe86 latest2026-09-10 546fe86 35,454 BA view · diff
git:20260903.29924dd2026-09-03 29924dd 35,466 BA view · diff
git:20260903.fa855c42026-09-03 fa855c4 35,437 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (35454 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

GitHub

novaestellar/novahaku · 24 stars · license none · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hq5yzci7aabd6g2t
GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-race-condition
GET https://markdownregistry.com/api/v1/blob/49965893e3a77c1993411af6d9631bd98f872ae8ea21ff2e1f6579a5de14678b

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.