{"url":"https://furutsuki.hatenablog.com/entry/2025/07/27/223211","author_name":"Furutsuki","blog_url":"https://furutsuki.hatenablog.com/","description":"SECCON Beginners CTF 2025\u306eCrypto\u554f\u984c\u306ewriteup\u3067\u3059\u3002 seesaw 01-Translator elliptic4b Golden Ticket mathmyth seesaw import os from Crypto.Util.number import getPrime FLAG = os.getenv(\"FLAG\", \"ctf4b{dummy_flag}\").encode() m = int.from_bytes(FLAG, 'big') p = getPrime(512) q = getPrime(16) n = p * q e = 65537 \u2026","published":"2025-07-27 22:32:11","provider_name":"Hatena Blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/Furutsuki/","provider_url":"https://hatena.blog","width":"100%","categories":[],"image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/F/Furutsuki/20250727/20250727210338.png","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffurutsuki.hatenablog.com%2Fentry%2F2025%2F07%2F27%2F223211\" title=\"SECCON Beginners CTF 2025 writeup - \u3075\u308b\u3064\u304d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","title":"SECCON Beginners CTF 2025 writeup","blog_title":"\u3075\u308b\u3064\u304d","height":"190"}