kingfisher/data/rules/pastebin.yml
Mick Grove 0f953f59a5 pattern_requirements for rules — Post-regex character-class gating to cut false positives without lookarounds. Authors can now require minimum counts of digits, uppercase, lowercase, and special characters, with an optional custom special-char set.
Why: Hyperscan doesn’t support lookaheads/behinds, so many “must contain X and Y” checks had to be baked into the regex (hurting readability) or were impossible. pattern_requirements applies lightweight, in-memory checks after a match is found, keeping patterns fast and clean.
2025-11-04 13:55:31 -05:00

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YAML

rules:
- name: Pastebin API Key
id: kingfisher.pastebin.1
pattern: |
(?xi)
\b
pastebin
(?:.|[\n\r]){0,32}?
(?:SECRET|PRIVATE|ACCESS|KEY|TOKEN)
(?:.|[\n\r]){0,32}?
\b
(
[A-Z0-9_]{32}
)
\b
pattern_requirements:
min_digits: 2
min_entropy: 3.5
confidence: medium
examples:
- pastebin_key=zwD26NeyMCvBsR9nxfaybLHD7TcLh22O
- pastebin_api_token=zwD26NeyMCvBsR9n_faybLHD7TcLh22O
validation:
type: Http
content:
request:
method: POST
url: https://pastebin.com/api/api_login.php
headers:
Content-Type: application/x-www-form-urlencoded
body: |
api_dev_key={{ TOKEN }}&api_user_name=dummy&api_user_password=dummy
response_matcher:
- report_response: true
- type: StatusMatch
status: [200]
- type: WordMatch
words: ['invalid api_dev_key']
negative: true