[pitboss] phase 12: Track B — Python harness emitter shapes

tests/dynamic_fixtures/python/pytest/vuln.py

@@ -0,0 +1,22 @@
+"""Phase 12 — pytest shape, vulnerable.
+
+Pytest convention: function name starts with `test_`.  Nyx harness
+injects the payload via the `NYX_PAYLOAD` env var (the same channel
+pytest fixtures typically read from).
+"""
+import os
+import subprocess
+
+
+def test_run_ping():
+    """Vulnerable test: reads host from env, concatenates into shell."""
+    host = os.environ.get("NYX_PAYLOAD", "")
+    result = subprocess.run(
+        "ping -c 1 " + host,
+        shell=True,
+        capture_output=True,
+        text=True,
+        timeout=5,
+    )
+    print(result.stdout)
+    print(result.stderr, end="")