{"description":"Seccompare Leakage Linear_Operation shellcoder OneLine Dump Ramen Seccompare \u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u5f15\u6570\u3067\u6587\u5b57\u5217\u3092\u6e21\u3057\u3066\uff0c\u305d\u308c\u304c\u6b63\u89e3\u304b\u3069\u3046\u304bstrcmp\u3067\u6bd4\u8f03\u3057\u3066\u308b\uff0e\u3088\u3063\u3066\uff0cltrace\u3092\u4f7f\u3048\u3070\u6bd4\u8f03\u5bfe\u8c61\u3067\u3042\u308b\u30d5\u30e9\u30b0\u304c\u6c42\u307e\u308b\uff0e $ ltrace ./seccompare hoge strcmp(\"ctf4b{5tr1ngs_1s_n0t_en0ugh}\", \"hoge\") = -5 puts(\"wrong\"wrong ) = 6 +++ exited (status 0) +++ Leakage is_correct\u95a2\u6570\u3067\u5165\u529b\u5024\u2026","title":"Beginners CTF 2019 Writeup","published":"2019-05-26 21:27:53","author_url":"https://blog.hatena.ne.jp/ywkw1717/","url":"https://ywkw1717.hatenablog.com/entry/2019/05/26/212753","provider_url":"https://hatena.blog","categories":[],"height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fywkw1717.hatenablog.com%2Fentry%2F2019%2F05%2F26%2F212753\" title=\"Beginners CTF 2019 Writeup - yyy\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"yyy","image_url":"https://cdn.blog.st-hatena.com/images/theme/og-image-1500.png","provider_name":"Hatena Blog","blog_url":"https://ywkw1717.hatenablog.com/","type":"rich","width":"100%","author_name":"ywkw1717","version":"1.0"}