kingfisher/data/rules/finicity.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: Finicity API token
id: kingfisher.finicity.1
pattern: |
(?xi)
\b
finicity
(?:.|[\n\r]){0,32}?
(?:SECRET|PRIVATE|ACCESS|KEY|TOKEN)
(?:.|[\n\r]){0,32}?
\b
(
[a-f0-9]{32}
)
\b
pattern_requirements:
min_digits: 2
min_entropy: 3.5
confidence: medium
examples:
- finicity_api_token = "5600675afe3e1a0fa76d5b99b30ca7a8"
validation:
type: Http
content:
request:
method: GET
url: https://api.finicity.com/aggregation/v2/transactions
headers:
Content-Type: application/json
x-finicity-app-key: '{{ TOKEN }}'
response_matcher:
- report_response: true
- type: WordMatch
words:
- '"transactions":'
- name: Finicity client secret
id: kingfisher.finicity.2
pattern: |
(?xi)
\b
finicity
(?:.|[\n\r]){0,64}?
\b
(
[a-z0-9]{20}
)
\b
min_entropy: 3.5
confidence: medium
examples:
- finicity-clientsecret = 'geruj4LFyu0NBeBOnQvo'
validation:
type: Http
content:
request:
method: POST
url: https://api.finicity.com/aggregation/v2/customers
headers:
Content-Type: application/json
x-finicity-secret: '{{ TOKEN }}'
response_matcher:
- report_response: true
- type: StatusMatch
status:
- 200