feat: nova-proximity-to-ave crosswalk - #152
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No shared taxonomy anchor existed between the two projects, matched by direct rule-logic-to-fingerprint comparison instead. Includes the independent two-rule convergence on AVE-2026-00004 and Nova's own internal rule-overlap observation (DetectHiddenInstructions vs. DetectSkillPromptInjection) in the note field.
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Thirteen mechanism-verified matches, no existing taxonomy anchor to narrow against so every sub-case was checked directly against AVE fingerprints (see Nova-Hunting/nova-proximity#6 for the outreach writeup this crosswalk formalizes). Four confirmed gaps and one partial miss documented in the
notefield, along with an incidental finding about Nova's own rule set (two rules appear to independently detect the same concealment pattern).Summary
crosswalks/nova-proximity-to-ave.json: 13 mappings across 12 unique AVE records.AVE-2026-00004(shell pipe injection) is intentionally targeted twice -- two independent Nova rules (DetectMaliciousToolPermissionsandDetectSuspiciousScriptPatterns) converge on the same mechanism; not deduplicated, the convergence itself is the finding.d7521742...) and license (GPL-3.0, confirmed against the repo's ownLICENCEfile, not just the GitHub API's inferred license) pulled live, not typed from memory. Record count (76) and static_record_count (57) pulled live too.notefield, not as an eleventh-plus mapping or agapsarray entry that doesn't fit their actual (partial/near-miss) shape: sudo/chmod/netcat/reverse-shell detection, backdoor-library detection (paramiko/fabric/pexpect), plain bracket-tag concealment (distinct from AVE-2026-00029's Unicode-specific mechanism), and known exfil-relay-domain detection (distinct from AVE's closest steganography-based label).Test plan
python3 scripts/validate_crosswalks.py-- 6/6 valid,nova-proximity-to-ave.jsonresolves clean againstschema/crosswalk-1.0.0.schema.jsonpython3 scripts/validate_records.py-- 76/76 records valid (unaffected, no record changes in this PR)pytest tests/ -x -q-- 305 passed