Publish Layerfault deep challenge LF-CH-EVAS-0007

CHALLENGE_ORACLE.json

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+{
+  "attack_surface": [
+    "package-evasion"
+  ],
+  "control_type": "compound",
+  "corpus_id": "LF-CH-EVAS-0007",
+  "difficulty": "compound",
+  "expected_decision": "BLOCK",
+  "ground_truth": "synthetic-generated",
+  "layerfault_rule_expectations": {
+    "candidate_rules": [],
+    "expected_rules": [],
+    "must_not_rules": []
+  },
+  "oracle_ids": [
+    "LF-ORACLE-PACKAGE-FRAGMENTED-SIGNAL"
+  ],
+  "related_cases": [],
+  "repo_name": "evasion-hex-split-marker",
+  "safe_fixture": true,
+  "schema": 2,
+  "severity": "high",
+  "techniques": [
+    "fragmented-marker",
+    "hex"
+  ],
+  "transformations": [
+    "fragmentation",
+    "hex"
+  ]
+}

FIXTURE_LAYOUT.json

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+{
+  "artifacts": [
+    "config.json",
+    "assets/chunk-0.hex",
+    "assets/chunk-1.hex",
+    "assets/chunk-2.hex"
+  ],
+  "family": "evasion",
+  "note": "All content is synthetic and inert. Do not treat this as a production model.",
+  "repo_name": "evasion-hex-split-marker"
+}

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [],
+  "challenge": {
+    "attack_surface": [
+      "package-evasion"
+    ],
+    "control_type": "compound",
+    "difficulty": "compound",
+    "expected_decision": "BLOCK",
+    "oracle_ids": [
+      "LF-ORACLE-PACKAGE-FRAGMENTED-SIGNAL"
+    ],
+    "related_cases": [],
+    "severity": "high",
+    "techniques": [
+      "fragmented-marker",
+      "hex"
+    ],
+    "transformations": [
+      "fragmentation",
+      "hex"
+    ]
+  },
+  "corpus_id": "LF-CH-EVAS-0007",
+  "description": "Marker is split as hexadecimal text across files.",
+  "expected_rules": [],
+  "generator": "challenges.generate_challenge",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "evasion-hex-split-marker",
+  "repo_type": "model",
+  "safe_fixture": true,
+  "safety": "inert/canary-only",
+  "schema": 1,
+  "validation": {
+    "kind": "verify-package",
+    "target": "."
+  }
+}

README.md

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+---
+license: apache-2.0
+tags:
+- layerfault
+- security-research
+- model-security
+- synthetic
+- adversarial-testing
+extra_gated_prompt: >-
+  This repository is a synthetic security-test artifact from the Layerfault
+  corpus. It intentionally contains adversarial characteristics (e.g.
+  suspicious pickle opcodes, executable-format smuggling, prompt-injection
+  strings) designed to exercise security scanner detection rules. It is
+  **not** a usable ML model and must never be loaded or executed outside an
+  isolated scanner-testing environment. By accepting, you confirm you
+  understand this repository is a test fixture, not production model
+  weights.
+extra_gated_button_content: I understand this is a security test fixture and accept the risk
+gated: auto
+---
+
+# evasion-hex-split-marker
+
+> **SECURITY TEST ARTIFACT: DO NOT USE AS A PRODUCTION MODEL**
+
+This repository is part of the Layerfault synthetic security corpus.
+It is deliberately constructed to contain security-relevant characteristics for scanner testing.
+
+**Corpus ID:** `LF-CH-EVAS-0007`
+
+## Purpose
+
+Marker is split as hexadecimal text across files.
+
+## Direct expected Layerfault rules
+
+- None; this repository is a control/comparison input.
+
+## Candidate rules
+
+These are deliberately plausible targets that remain marked as candidates until the exact
+Layerfault build used for certification confirms them.
+
+- None
+
+## Negative-control rules
+
+These should remain silent for this corpus item.
+
+- None
+
+## Safety
+
+The corpus uses fake secrets, loopback/`.invalid` network destinations, harmless marker output,
+and synthetic model behavior only. It is intended for static scanning and isolated security testing.
+
+## Challenge classification
+
+- Severity: **high**
+- Difficulty: **compound**
+- Expected admission decision: **BLOCK**
+- Control type: **compound**
+- Attack surface: package-evasion
+- Techniques: fragmented-marker, hex
+- Transformations: fragmentation, hex
+
+### Ground-truth oracle IDs
+
+- `LF-ORACLE-PACKAGE-FRAGMENTED-SIGNAL`
+
+These oracle IDs describe synthetic ground truth. They do not claim that a
+matching Layerfault detector already exists. A challenge may intentionally expose
+a scanner blind spot and remain unmapped until the detector is implemented.

SHA256SUMS.json

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+[
+  {
+    "path": "CHALLENGE_ORACLE.json",
+    "sha256": "f5212677e1f23c4c95cbb595b28803f19b16995ce0855a59772946a0ba57728c",
+    "size": 645
+  },
+  {
+    "path": "FIXTURE_LAYOUT.json",
+    "sha256": "f3cf8c4d46b69f999bb3579eca198e5b8d457744c8fc447a57ba5c9f052fcda3",
+    "size": 277
+  },
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "544ac6fb60d4fb89a6da983541a6155d71f5536e273cf20ba96ce34400f8d0d9",
+    "size": 904
+  },
+  {
+    "path": "README.md",
+    "sha256": "5928cf820efb6ee498f09595714d1356935e508e5794e41a2e0dd6521b6c3ef9",
+    "size": 2243
+  },
+  {
+    "path": "assets/chunk-0.hex",
+    "sha256": "03950aea81663bc4984d8df37c12662210c1f41d03c7063b7a28e457274adcf1",
+    "size": 29
+  },
+  {
+    "path": "assets/chunk-1.hex",
+    "sha256": "36300225c6bc35e1b31645d4b42fd7ddd9ed217186fb1845a1e80b15a57934dc",
+    "size": 29
+  },
+  {
+    "path": "assets/chunk-2.hex",
+    "sha256": "cee51446ffce4b2c9f1f4ddbad0cd642b0376805ef3d620632bf129ba23dd654",
+    "size": 31
+  },
+  {
+    "path": "config.json",
+    "sha256": "68d4b6c3308015c36332de690b727c02878531e6440ced97fcf1fd1a46d41704",
+    "size": 88
+  }
+]

assets/chunk-0.hex

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+4c415945524641554c545f464958

assets/chunk-1.hex

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+545552453a65766173696f6e2d68

assets/chunk-2.hex

@@ -0,0 +1 @@
+65782d73706c69742d6d61726b6572

config.json

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+{
+  "asset_root": "assets",
+  "fixture": true,
+  "model_type": "layerfault_challenge"
+}