Publish Layerfault deep challenge LF-CH-SCRX-0008

CHALLENGE_ORACLE.json

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+{
+  "attack_surface": [
+    "script-supply-chain"
+  ],
+  "control_type": "positive",
+  "corpus_id": "LF-CH-SCRX-0008",
+  "difficulty": "hard",
+  "expected_decision": "BLOCK",
+  "ground_truth": "synthetic-generated",
+  "layerfault_rule_expectations": {
+    "candidate_rules": [
+      "LF-DEP-NPM-INSTALL-HOOK",
+      "LF-JS-SEMANTIC-PROCESS"
+    ],
+    "expected_rules": [],
+    "must_not_rules": []
+  },
+  "oracle_ids": [
+    "LF-ORACLE-SCRX-0008"
+  ],
+  "related_cases": [],
+  "repo_name": "script-js-install-hook-chain",
+  "safe_fixture": true,
+  "schema": 2,
+  "severity": "medium",
+  "techniques": [
+    "js",
+    "install",
+    "hook",
+    "chain"
+  ],
+  "transformations": []
+}

FIXTURE_LAYOUT.json

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+{
+  "artifacts": [
+    "package.json",
+    "loader.js"
+  ],
+  "family": "scriptx",
+  "note": "All content is synthetic and inert. Do not treat this as a production model.",
+  "repo_name": "script-js-install-hook-chain"
+}

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [
+    "LF-DEP-NPM-INSTALL-HOOK",
+    "LF-JS-SEMANTIC-PROCESS"
+  ],
+  "challenge": {
+    "attack_surface": [
+      "script-supply-chain"
+    ],
+    "control_type": "positive",
+    "difficulty": "hard",
+    "expected_decision": "BLOCK",
+    "oracle_ids": [
+      "LF-ORACLE-SCRX-0008"
+    ],
+    "related_cases": [],
+    "severity": "medium",
+    "techniques": [
+      "js",
+      "install",
+      "hook",
+      "chain"
+    ],
+    "transformations": []
+  },
+  "corpus_id": "LF-CH-SCRX-0008",
+  "description": "Script js install hook chain.",
+  "expected_rules": [],
+  "generator": "challenges.generate_challenge",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "script-js-install-hook-chain",
+  "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
+---
+
+# script-js-install-hook-chain
+
+> **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-SCRX-0008`
+
+## Purpose
+
+Script js install hook chain.
+
+## 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.
+
+- `LF-DEP-NPM-INSTALL-HOOK`
+- `LF-JS-SEMANTIC-PROCESS`
+
+## 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: **medium**
+- Difficulty: **hard**
+- Expected admission decision: **BLOCK**
+- Control type: **positive**
+- Attack surface: script-supply-chain
+- Techniques: js, install, hook, chain
+- Transformations: none
+
+### Ground-truth oracle IDs
+
+- `LF-ORACLE-SCRX-0008`
+
+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": "cc1fb524d00e8b328702addb0662ea081f9b106352c9010dd61126332a7a0382",
+    "size": 684
+  },
+  {
+    "path": "FIXTURE_LAYOUT.json",
+    "sha256": "d44f2881263311066a7a04dd21c1d23d4271eda00849351c9462cfe6ded6931a",
+    "size": 221
+  },
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "1871a8efedca02f1e4a316a4c2c8c66b7e3f035201155321ee2af45d3b0ba572",
+    "size": 915
+  },
+  {
+    "path": "README.md",
+    "sha256": "0e45a52b68b33c451f6d3052a7e277dc9e25f867f68064ec286f156a534b106b",
+    "size": 2249
+  },
+  {
+    "path": "loader.js",
+    "sha256": "ebfe96ed3cb9525a3987e0b3b65478f782a5b3c5c04ce6b05b61b29463db02cc",
+    "size": 70
+  },
+  {
+    "path": "package.json",
+    "sha256": "1b9e1385b1b1350639f81a9eb0686a8473fdf289b451054c799c0d8f1e5813be",
+    "size": 59
+  }
+]

loader.js

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+const cp=require("child_process"); console.log("LAYERFAULT_FIXTURE");

package.json

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+{
+  "scripts": {
+    "postinstall": "node loader.js"
+  }
+}