example-metadata.json

{
  "fs": {
    "mv": [
      {
        "src": "/root/ETSCTF_ROOT_FLAG_FROM_BUILD",
        "dest": "/root/ETSCTF_NEW_ROOT_FLAG_FOR_PLAYER"
      }
    ],
    "sed": [
      {
        "file": "/etc/shadow",
        "src": "SHADOW_FLAG_FROM_BUILD",
        "dest": "NEW_SHADOW_FLAG_FOR_PLAYER"
      },
      {
        "file": "/etc/passwd",
        "src": "PASSWD_FLAG_FROM_BUILD",
        "dest": "PASSWD_FLAG_FOR_PLAYER"
      }
    ]
  },
  "firewall": [
    {"chain": "INPUT", "action": "REJECT"},
    {"chain": "INPUT", "inInterface": "lo", "action": "ACCEPT"},
    {"chain": "INPUT", "conntrack": "ESTABLISHED,RELATED", "action": "ACCEPT"},
    {"chain": "INPUT", "source": "10.0.0.0/24", "action": "ACCEPT"},
    {"chain": "INPUT", "source": "10.10.0.0/16", "action": "ACCEPT"},
    {"chain": "OUTPUT", "outInterface": "lo", "action": "ACCEPT"},
    {"chain": "OUTPUT", "conntrack": "ESTABLISHED", "action": "ACCEPT"}
  ]
}