{
  "id": "zh3r0-2021-real-mersenne",
  "title": "Challenge archive: zh3r0 CTF V2 2021 - real_mersenne",
  "challenge_name": "real_mersenne",
  "year": 2021,
  "category": "Cryptography",
  "authors": [
    "deuterium"
  ],
  "mode": "interactive",
  "event": {
    "id": "zh3r0-2021",
    "series": "zh3r0 CTF",
    "label": "2021 (V2)",
    "starts_at": "2021-06-04T10:30:00+00:00",
    "date_source": "https://ctftime.org/event/1285",
    "year": 2021
  },
  "article_url": "https://deut-erium.github.io/challenges/zh3r0-2021/real-mersenne/",
  "article_path": "/challenges/zh3r0-2021/real-mersenne/",
  "text_url": "https://deut-erium.github.io/challenges/zh3r0-2021/real-mersenne/challenge.txt",
  "text_path": "/challenges/zh3r0-2021/real-mersenne/challenge.txt",
  "json_url": "https://deut-erium.github.io/challenges/zh3r0-2021/real-mersenne/challenge.json",
  "json_path": "/challenges/zh3r0-2021/real-mersenne/challenge.json",
  "statement": {
    "label": "Original description",
    "text": "Do you believe in games of luck? I hope you make your guesses real or you'll be floating around,"
  },
  "notes": [
    "The handout omits the secret module. Browser practice uses a public dummy reward in place of the event flag; the original remote service is retired.",
    "The original remote service is retired. Browser practice runs locally with the public dummy reward practice{local_dummy_reward}, not an event flag or authoritative score. No TCP endpoint is provided."
  ],
  "files": [
    {
      "name": "challenge.py",
      "label": "challenge.py",
      "kind": "handout",
      "url": "https://deut-erium.github.io/assets/challenges/zh3r0-2021-real-mersenne/challenge.py",
      "path": "/assets/challenges/zh3r0-2021-real-mersenne/challenge.py",
      "bytes": 734,
      "sha256": "ca3c4c28c6271359f4a7838f7f7ae5fd06e534e30920fc9f21aff1223d27582c",
      "upstream_url": "https://raw.githubusercontent.com/zh3r0/zh3r0-ctf/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/real_mersenne/public/challenge.py"
    }
  ],
  "spoilers": {
    "warning": "Spoilers: organizer files and upstream source, archive, or solution links may reveal answers. Modified downloads are identified below.",
    "files": [

    ],
    "source_url": "https://github.com/zh3r0/zh3r0-ctf/blob/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/real_mersenne/readme.md#L5",
    "archive_url": "https://github.com/zh3r0/zh3r0-ctf/tree/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/real_mersenne",
    "solution_url": "https://github.com/zh3r0/zh3r0-ctf/blob/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/real_mersenne/admin/solve.py"
  },
  "licenses": [

  ],
  "browser_practice": {
    "runtime": "real-mersenne",
    "variants": [
      "default"
    ],
    "launch_url": "https://deut-erium.github.io/challenges/zh3r0-2021/real-mersenne/#browser-practice",
    "launch_path": "/challenges/zh3r0-2021/real-mersenne/#browser-practice"
  }
}