novaestellar/novahaku · testing/hunt/hunt-spa-api/SKILL.md

hunt-spa-api skillA

hunt-spa-api is agent-read markdown (skill) from novaestellar/novahaku: Discover a single-page-app's hidden backend API from its public JS bundle, then test that API for broken access control / missing authentication. One of the highest-yield web plays in modern recon — SPAs ship their entire backend route map to the browser, and the API behind them is frequently missing the auth middleware the login page implies. Built from an authorized engagement where this play found an unauthenticated financial API that an ASM scan reporting hundreds of "Criticals" completely m.

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-spa-api@git:20260910.546fe86
Exact content
mdr add novaestellar/novahaku/hunt-spa-api@sha256:a9d8c9e1947d380e

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_eztzrhtvw5qcwkd5.svg)](https://markdownregistry.com/a/art_eztzrhtvw5qcwkd5)

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Versions

versioncommittedcommitsizeaudit
git:20260910.546fe86 latest2026-09-10 546fe86 8,444 BA view · diff
git:20260903.29924dd2026-09-03 29924dd 8,456 BA view · diff
git:20260903.fa855c42026-09-03 fa855c4 8,427 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 (8444 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_eztzrhtvw5qcwkd5
GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-spa-api
GET https://markdownregistry.com/api/v1/blob/a9d8c9e1947d380e68448b34d517427c126f5dfd1a8e3ef2756671a9797c986e

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