{"id":109,"date":"2021-05-23T16:33:09","date_gmt":"2021-05-23T07:33:09","guid":{"rendered":"https:\/\/rakuha.com\/?p=109"},"modified":"2021-05-23T16:38:26","modified_gmt":"2021-05-23T07:38:26","slug":"seccon-beginners-ctf-2021-writeup","status":"publish","type":"post","link":"https:\/\/rakuha.com\/?p=109","title":{"rendered":"SECCON Beginners CTF 2021 writeup"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002<br>Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/rakuha.com\/?p=109\/#Web_osoba\" >[Web] osoba<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/rakuha.com\/?p=109\/#Web_Werewolf\" >[Web] Werewolf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rakuha.com\/?p=109\/#Web_check_url\" >[Web] check_url<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rakuha.com\/?p=109\/#Web_cant_use_db\" >[Web] cant_use_db<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rakuha.com\/?p=109\/#misc_git-leak\" >[misc] git-leak<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rakuha.com\/?p=109\/#reversing_only_read\" >[reversing] only_read<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rakuha.com\/?p=109\/#%E3%81%95%E3%81%84%E3%81%94%E3%81%AB\" >\u3055\u3044\u3054\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Web_osoba\"><\/span>[Web] osoba<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"316\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?resize=900%2C316&#038;ssl=1\" alt=\"\" class=\"wp-image-110\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?resize=1024%2C359&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?resize=300%2C105&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?resize=768%2C269&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?resize=800%2C281&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?w=1183&amp;ssl=1 1183w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">HTML\u306e\u30bd\u30fc\u30b9\u3092\u898b\u308b\u3068\u3001\u30da\u30fc\u30b8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u6307\u5b9a\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"302\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-1.png?resize=756%2C302&#038;ssl=1\" alt=\"\" class=\"wp-image-111\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-1.png?w=756&amp;ssl=1 756w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-1.png?resize=300%2C120&amp;ssl=1 300w\" sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u3093\u306a\u308f\u3051\u3067\u3001<code>https:\/\/osoba.quals.beginners.seccon.jp\/?page=..\/flag<\/code> \u3068\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u308b\u3068\u30d5\u30e9\u30b0\u30b2\u30c3\u30c8\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Web_Werewolf\"><\/span>[Web] Werewolf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"367\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-2.png?resize=900%2C367&#038;ssl=1\" alt=\"\" class=\"wp-image-112\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-2.png?resize=1024%2C418&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-2.png?resize=300%2C122&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-2.png?resize=768%2C313&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-2.png?resize=800%2C327&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-2.png?w=1475&amp;ssl=1 1475w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u3057\u306b\u3084\u3063\u3066\u307f\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"631\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-3.png?resize=900%2C631&#038;ssl=1\" alt=\"\" class=\"wp-image-113\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-3.png?resize=1024%2C718&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-3.png?resize=300%2C210&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-3.png?resize=768%2C539&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-3.png?resize=800%2C561&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-3.png?w=1062&amp;ssl=1 1062w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">app.py\u3092\u898b\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u3002<code>player.__dict__[k] = v<\/code> \u306b\u5bfe\u3057\u3066role\u3092\u66f8\u304d\u63db\u3048\u308b\u3088\u3046\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5165\u308c\u308c\u3070\u3044\u3044\u3068\u601d\u3063\u305f\u3051\u3069\u3001role\u3084__role\u3092\u6307\u5b9a\u3057\u3066\u3082\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"703\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-4.png?resize=900%2C703&#038;ssl=1\" alt=\"\" class=\"wp-image-114\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-4.png?resize=1024%2C800&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-4.png?resize=300%2C234&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-4.png?resize=768%2C600&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-4.png?resize=800%2C625&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-4.png?w=1257&amp;ssl=1 1257w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"> \u8a66\u3057\u306b <code>player.__dict__<\/code> \u3092\u8868\u793a\u3057\u3066\u307f\u308b\u3088\u3046\u306a\u30bd\u30fc\u30b9\u3092\u66f8\u3044\u3066\u3001\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"631\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-5.png?resize=900%2C631&#038;ssl=1\" alt=\"\" class=\"wp-image-115\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-5.png?resize=1024%2C718&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-5.png?resize=300%2C210&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-5.png?resize=768%2C539&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-5.png?resize=800%2C561&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-5.png?w=1148&amp;ssl=1 1148w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u308b\u307b\u3069\u3002 <code>_Player__role<\/code> \u3068\u5165\u308c\u308c\u3070\u3044\u3044\u306e\u304b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"719\" height=\"123\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-6.png?resize=719%2C123&#038;ssl=1\" alt=\"\" class=\"wp-image-116\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-6.png?w=719&amp;ssl=1 719w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-6.png?resize=300%2C51&amp;ssl=1 300w\" sizes=\"auto, (max-width: 719px) 100vw, 719px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3044\u3046\u308f\u3051\u3067_Player__role\u3068\u3044\u3046\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u3067WEREWOLF\u3092\u9001\u308c\u3070OK\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Web_check_url\"><\/span>[Web] check_url<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30fc\u30d0\u306bURL\u3092\u6e21\u3059\u3068\u3001\u305d\u3053\u306b\u5bfe\u3057\u3066curl\u3067\u30a2\u30af\u30bb\u30b9\u3057\u3066\u304f\u308c\u308b\u3089\u3057\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"398\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-8.png?resize=900%2C398&#038;ssl=1\" alt=\"\" class=\"wp-image-118\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-8.png?resize=1024%2C453&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-8.png?resize=300%2C133&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-8.png?resize=768%2C340&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-8.png?resize=800%2C354&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-8.png?w=1351&amp;ssl=1 1351w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">index.php\u3092\u898b\u308b\u3068\u3001\u81ea\u5206\u81ea\u8eab\u304b\u3089\u30a2\u30af\u30bb\u30b9\u304c\u304f\u308b\u3068\u30d5\u30e9\u30b0\u3092\u6e21\u3057\u3066\u304f\u308c\u308b\u3068\u306e\u3053\u3068\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"546\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-7.png?resize=900%2C546&#038;ssl=1\" alt=\"\" class=\"wp-image-117\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-7.png?w=1021&amp;ssl=1 1021w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-7.png?resize=300%2C182&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-7.png?resize=768%2C466&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-7.png?resize=800%2C485&amp;ssl=1 800w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">URL\u306e\u8868\u73fe\u306e\u5f62\u5f0f\u306f\u3044\u308d\u3044\u308d\u3042\u308b\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u3092\u53c2\u8003\u306b\u3057\u3066\u307f\u305f\u3002<br>http:\/\/www.rtpro.yamaha.co.jp\/RT\/docs\/ip-address.php<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">10\u9032\u6570\u3060\u3068\u3046\u307e\u304f\u3044\u304b\u306a\u3044&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"548\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-9.png?resize=900%2C548&#038;ssl=1\" alt=\"\" class=\"wp-image-119\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-9.png?resize=1024%2C623&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-9.png?resize=300%2C182&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-9.png?resize=768%2C467&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-9.png?resize=800%2C486&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-9.png?w=1209&amp;ssl=1 1209w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">16\u9032\u306a\u3089\u3044\u3051\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"715\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-10.png?resize=900%2C715&#038;ssl=1\" alt=\"\" class=\"wp-image-120\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-10.png?resize=1024%2C814&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-10.png?resize=300%2C238&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-10.png?resize=768%2C610&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-10.png?resize=800%2C636&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-10.png?w=1174&amp;ssl=1 1174w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Web_cant_use_db\"><\/span>[Web] cant_use_db<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"617\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?resize=900%2C617&#038;ssl=1\" alt=\"\" class=\"wp-image-121\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?resize=1024%2C702&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?resize=300%2C206&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?resize=768%2C526&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?resize=1536%2C1053&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?resize=800%2C548&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-11.png?w=1679&amp;ssl=1 1679w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u3046\u3084\u3089Noodles2\u3064\u3068Soup1\u3064\u3092Buy\u3057\u305f\u3042\u3068\u3001Flag\u3092\u62bc\u305b\u3070\u30b2\u30c3\u30c8\u3067\u304d\u308b\u3089\u3057\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"784\" height=\"755\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-12.png?resize=784%2C755&#038;ssl=1\" alt=\"\" class=\"wp-image-122\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-12.png?w=784&amp;ssl=1 784w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-12.png?resize=300%2C289&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-12.png?resize=768%2C740&amp;ssl=1 768w\" sizes=\"auto, (max-width: 784px) 100vw, 784px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c6\u30ad\u30b9\u30c8\u3092\u958b\u3044\u3066\u305d\u3053\u306b\u91d1\u984d\u3092\u66f8\u304d\u8fbc\u3093\u3067\u3044\u308b\u306e\u3067\u3001\u8907\u6570\u540c\u6642\u306b\u5b9f\u884c\u3059\u308c\u3070\u3088\u3044\u3089\u3057\u3044\u3002<br>\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u3044\u3066buy_noodles\u3068buy_soup\u306b\u5bfe\u3057\u3066\u4e26\u884c\u3067\u30a2\u30af\u30bb\u30b9\u3057\u3001\u30d5\u30e9\u30b0\u30b2\u30c3\u30c8\uff01<br><br>\uff08\u4ed6\u306e\u4eba\u306ewriteup\u898b\u3066\u305f\u3089\u666e\u901a\u306b\u7d20\u65e9\u304f\u30dc\u30bf\u30f3\u3092\u62bc\u305b\u3070\u30d5\u30e9\u30b0\u304c\u30b2\u30c3\u30c8\u3067\u304d\u308b\u3068\u306e\u3053\u3068&#8230;\u306a\u3093\u3068\u3002\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"misc_git-leak\"><\/span>[misc] git-leak<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"272\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-13.png?resize=900%2C272&#038;ssl=1\" alt=\"\" class=\"wp-image-123\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-13.png?resize=1024%2C310&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-13.png?resize=300%2C91&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-13.png?resize=768%2C233&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-13.png?resize=800%2C242&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-13.png?w=1199&amp;ssl=1 1199w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d6\u5f97\u3057\u305f\u30ea\u30dd\u30b8\u30c8\u30ea\u306e <code>.git\/logs\/HEAD<\/code> \u3092\u307f\u3066\u3001\u602a\u3057\u305d\u3046\u306a\u3084\u3064\u3092git diff\u3057\u3066\u307f\u308b\u3068\u3042\u3063\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"289\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=900%2C289&#038;ssl=1\" alt=\"\" class=\"wp-image-124\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=1024%2C329&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=300%2C96&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=768%2C247&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=1536%2C493&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=2048%2C657&amp;ssl=1 2048w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?resize=800%2C257&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-14.png?w=1800&amp;ssl=1 1800w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"reversing_only_read\"><\/span>[reversing] only_read<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"230\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-15.png?resize=900%2C230&#038;ssl=1\" alt=\"\" class=\"wp-image-125\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-15.png?resize=1024%2C262&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-15.png?resize=300%2C77&amp;ssl=1 300w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-15.png?resize=768%2C196&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-15.png?resize=800%2C205&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-15.png?w=1185&amp;ssl=1 1185w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">ghidra\u52d5\u304b\u305d\u3046\u3068\u3057\u305f\u3089\u74b0\u5883\u304c\u6574\u3063\u3066\u3044\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u30b5\u30af\u30c3\u3068objdump\u3057\u305f\u3089\u3053\u3093\u306a\u611f\u3058\u3002\u6bd4\u8f03\u3057\u3066\u3044\u308b\u90e8\u5206\u3092\u8aad\u3093\u3067\u3044\u304f\u3068ctf4b{\u304b\u3089\u59cb\u307e\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u308c\u3092\u9811\u5f35\u3063\u3066\u8aad\u3093\u3060\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"823\" height=\"1024\" src=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png?resize=823%2C1024&#038;ssl=1\" alt=\"\" class=\"wp-image-126\" srcset=\"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png?resize=823%2C1024&amp;ssl=1 823w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png?resize=241%2C300&amp;ssl=1 241w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png?resize=768%2C956&amp;ssl=1 768w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png?resize=800%2C996&amp;ssl=1 800w, https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png?w=912&amp;ssl=1 912w\" sizes=\"auto, (max-width: 823px) 100vw, 823px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%95%E3%81%84%E3%81%94%E3%81%AB\"><\/span>\u3055\u3044\u3054\u306b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Web\u554f\u306ejson\u3082\u60dc\u3057\u3044\u3068\u3053\u308d\u307e\u3067\u3044\u3063\u305f\u308a\u3001magic\u3082\u3042\u308b\u7a0b\u5ea6\u65b9\u5411\u6027\u306f\u3042\u3063\u3066\u3044\u305f\u306e\u3067\u3001Web\u554f\u5168\u90e8\u89e3\u304d\u305f\u304b\u3063\u305f\u306a\u3041&#8230;<br>\u4ed6\u306e\u4eba\u306ewriteup\u8aad\u3093\u3067\u52c9\u5f37\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002<br \/>\nWelcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[2],"tags":[],"class_list":["post-109","post","type-post","status-publish","format-standard","hentry","category-ctf"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"\u3089\u304f\u306f\u3002\"\/>\n\t<meta name=\"google-site-verification\" content=\"I_JXw338RMBFTetbO8o1Zw6x6zpg9_FAVU7TCeD1E-4\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/rakuha.com\/?p=109\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"ja_JP\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Rakuha&#039;s Blog\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"SECCON Beginners CTF 2021 writeup | Rakuha&#039;s Blog\" \/>\n\t\t<meta property=\"og:description\" content=\"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/rakuha.com\/?p=109\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png\" \/>\n\t\t<meta property=\"og:image:width\" content=\"912\" \/>\n\t\t<meta property=\"og:image:height\" content=\"1135\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-05-23T07:33:09+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-05-23T07:38:26+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@rakuha3\" \/>\n\t\t<meta name=\"twitter:title\" content=\"SECCON Beginners CTF 2021 writeup | Rakuha&#039;s Blog\" \/>\n\t\t<meta name=\"twitter:description\" content=\"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/rakuha.com\/wp-content\/uploads\/2019\/05\/blog_icon-1.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#article\",\"name\":\"SECCON Beginners CTF 2021 writeup | Rakuha's Blog\",\"headline\":\"SECCON Beginners CTF 2021 writeup\",\"author\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/?author=1#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/#person\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/rakuha.com\\\/wp-content\\\/uploads\\\/2021\\\/05\\\/image.png?fit=1183%2C415&ssl=1\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109\\\/#articleImage\",\"width\":1183,\"height\":415},\"datePublished\":\"2021-05-23T16:33:09+09:00\",\"dateModified\":\"2021-05-23T16:38:26+09:00\",\"inLanguage\":\"ja\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#webpage\"},\"articleSection\":\"CTF\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com#listItem\",\"position\":1,\"name\":\"\\u30db\\u30fc\\u30e0\",\"item\":\"https:\\\/\\\/rakuha.com\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?cat=2#listItem\",\"name\":\"CTF\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?cat=2#listItem\",\"position\":2,\"name\":\"CTF\",\"item\":\"https:\\\/\\\/rakuha.com\\\/?cat=2\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#listItem\",\"name\":\"SECCON Beginners CTF 2021 writeup\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com#listItem\",\"name\":\"\\u30db\\u30fc\\u30e0\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#listItem\",\"position\":3,\"name\":\"SECCON Beginners CTF 2021 writeup\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?cat=2#listItem\",\"name\":\"CTF\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/#person\",\"name\":\"\\u3089\\u304f\\u306f\\u3002\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#personImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ca4d56d3c7da793753d47fb09627affdbd776d9d5809b90d52db58b0d60cbafd?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"\\u3089\\u304f\\u306f\\u3002\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?author=1#author\",\"url\":\"https:\\\/\\\/rakuha.com\\\/?author=1\",\"name\":\"\\u3089\\u304f\\u306f\\u3002\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ca4d56d3c7da793753d47fb09627affdbd776d9d5809b90d52db58b0d60cbafd?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"\\u3089\\u304f\\u306f\\u3002\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#webpage\",\"url\":\"https:\\\/\\\/rakuha.com\\\/?p=109\",\"name\":\"SECCON Beginners CTF 2021 writeup | Rakuha's Blog\",\"description\":\"\\u53c2\\u52a0\\u3057\\u3066\\u304d\\u307e\\u3057\\u305f\\u3002 Welcome\\u542b\\u3081\\u30667\\u554f\\u89e3\\u304d\\u307e\\u3057\\u305f\\u3002\\u3082\\u3046\\u3061\\u3087\\u3063\\u3068\\u3044\\u3051\\u305f\\u306a\\u30fc\\u3068\\u601d\\u3044\\u307e\\u3059\\u3002\\u3082\\u3046\\u5c11\\u3057\\u9811\\u5f35\\u308d\\u3046\\u3002\\u3002\\u3002\",\"inLanguage\":\"ja\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/?p=109#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/?author=1#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/?author=1#author\"},\"datePublished\":\"2021-05-23T16:33:09+09:00\",\"dateModified\":\"2021-05-23T16:38:26+09:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rakuha.com\\\/#website\",\"url\":\"https:\\\/\\\/rakuha.com\\\/\",\"name\":\"Rakuha's Blog\",\"description\":\"\\u60c5\\u5831\\u30bb\\u30ad\\u30e5\\u30ea\\u30c6\\u30a3\\u95a2\\u9023\\u306e\\u4e8b\\u3068\\u304b\",\"inLanguage\":\"ja\",\"publisher\":{\"@id\":\"https:\\\/\\\/rakuha.com\\\/#person\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"SECCON Beginners CTF 2021 writeup | Rakuha's Blog","description":"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002","canonical_url":"https:\/\/rakuha.com\/?p=109","robots":"max-image-preview:large","keywords":"","webmasterTools":{"google-site-verification":"I_JXw338RMBFTetbO8o1Zw6x6zpg9_FAVU7TCeD1E-4","miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/rakuha.com\/?p=109#article","name":"SECCON Beginners CTF 2021 writeup | Rakuha's Blog","headline":"SECCON Beginners CTF 2021 writeup","author":{"@id":"https:\/\/rakuha.com\/?author=1#author"},"publisher":{"@id":"https:\/\/rakuha.com\/#person"},"image":{"@type":"ImageObject","url":"https:\/\/i0.wp.com\/rakuha.com\/wp-content\/uploads\/2021\/05\/image.png?fit=1183%2C415&ssl=1","@id":"https:\/\/rakuha.com\/?p=109\/#articleImage","width":1183,"height":415},"datePublished":"2021-05-23T16:33:09+09:00","dateModified":"2021-05-23T16:38:26+09:00","inLanguage":"ja","mainEntityOfPage":{"@id":"https:\/\/rakuha.com\/?p=109#webpage"},"isPartOf":{"@id":"https:\/\/rakuha.com\/?p=109#webpage"},"articleSection":"CTF"},{"@type":"BreadcrumbList","@id":"https:\/\/rakuha.com\/?p=109#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/rakuha.com#listItem","position":1,"name":"\u30db\u30fc\u30e0","item":"https:\/\/rakuha.com","nextItem":{"@type":"ListItem","@id":"https:\/\/rakuha.com\/?cat=2#listItem","name":"CTF"}},{"@type":"ListItem","@id":"https:\/\/rakuha.com\/?cat=2#listItem","position":2,"name":"CTF","item":"https:\/\/rakuha.com\/?cat=2","nextItem":{"@type":"ListItem","@id":"https:\/\/rakuha.com\/?p=109#listItem","name":"SECCON Beginners CTF 2021 writeup"},"previousItem":{"@type":"ListItem","@id":"https:\/\/rakuha.com#listItem","name":"\u30db\u30fc\u30e0"}},{"@type":"ListItem","@id":"https:\/\/rakuha.com\/?p=109#listItem","position":3,"name":"SECCON Beginners CTF 2021 writeup","previousItem":{"@type":"ListItem","@id":"https:\/\/rakuha.com\/?cat=2#listItem","name":"CTF"}}]},{"@type":"Person","@id":"https:\/\/rakuha.com\/#person","name":"\u3089\u304f\u306f\u3002","image":{"@type":"ImageObject","@id":"https:\/\/rakuha.com\/?p=109#personImage","url":"https:\/\/secure.gravatar.com\/avatar\/ca4d56d3c7da793753d47fb09627affdbd776d9d5809b90d52db58b0d60cbafd?s=96&d=mm&r=g","width":96,"height":96,"caption":"\u3089\u304f\u306f\u3002"}},{"@type":"Person","@id":"https:\/\/rakuha.com\/?author=1#author","url":"https:\/\/rakuha.com\/?author=1","name":"\u3089\u304f\u306f\u3002","image":{"@type":"ImageObject","@id":"https:\/\/rakuha.com\/?p=109#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/ca4d56d3c7da793753d47fb09627affdbd776d9d5809b90d52db58b0d60cbafd?s=96&d=mm&r=g","width":96,"height":96,"caption":"\u3089\u304f\u306f\u3002"}},{"@type":"WebPage","@id":"https:\/\/rakuha.com\/?p=109#webpage","url":"https:\/\/rakuha.com\/?p=109","name":"SECCON Beginners CTF 2021 writeup | Rakuha's Blog","description":"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002","inLanguage":"ja","isPartOf":{"@id":"https:\/\/rakuha.com\/#website"},"breadcrumb":{"@id":"https:\/\/rakuha.com\/?p=109#breadcrumblist"},"author":{"@id":"https:\/\/rakuha.com\/?author=1#author"},"creator":{"@id":"https:\/\/rakuha.com\/?author=1#author"},"datePublished":"2021-05-23T16:33:09+09:00","dateModified":"2021-05-23T16:38:26+09:00"},{"@type":"WebSite","@id":"https:\/\/rakuha.com\/#website","url":"https:\/\/rakuha.com\/","name":"Rakuha's Blog","description":"\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u4e8b\u3068\u304b","inLanguage":"ja","publisher":{"@id":"https:\/\/rakuha.com\/#person"}}]},"og:locale":"ja_JP","og:site_name":"Rakuha's Blog","og:type":"article","og:title":"SECCON Beginners CTF 2021 writeup | Rakuha's Blog","og:description":"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002","og:url":"https:\/\/rakuha.com\/?p=109","og:image":"https:\/\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png","og:image:secure_url":"https:\/\/rakuha.com\/wp-content\/uploads\/2021\/05\/image-16.png","og:image:width":912,"og:image:height":1135,"article:published_time":"2021-05-23T07:33:09+00:00","article:modified_time":"2021-05-23T07:38:26+00:00","twitter:card":"summary","twitter:site":"@rakuha3","twitter:title":"SECCON Beginners CTF 2021 writeup | Rakuha's Blog","twitter:description":"\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002 Welcome\u542b\u3081\u30667\u554f\u89e3\u304d\u307e\u3057\u305f\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u3044\u3051\u305f\u306a\u30fc\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3046\u5c11\u3057\u9811\u5f35\u308d\u3046\u3002\u3002\u3002","twitter:image":"https:\/\/rakuha.com\/wp-content\/uploads\/2019\/05\/blog_icon-1.png"},"aioseo_meta_data":{"post_id":"109","title":null,"description":"#post_excerpt","keywords":[],"keyphrases":{"focus":[],"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":[],"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"custom_image","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[],"defaultGraph":"Article","defaultPostTypeGraph":""},"schema_type":"default","schema_type_options":"{\"article\":{\"articleType\":\"BlogPosting\"},\"course\":{\"name\":\"\",\"description\":\"\",\"provider\":\"\"},\"faq\":{\"pages\":[]},\"product\":{\"reviews\":[]},\"recipe\":{\"ingredients\":[],\"instructions\":[],\"keywords\":[]},\"software\":{\"reviews\":[],\"operatingSystems\":[]},\"webPage\":{\"webPageType\":\"WebPage\"}}","pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":{"locations":{"business":{"name":"","businessType":"","image":"","areaServed":"","urls":{"website":"","aboutPage":"","contactPage":""},"address":{"streetLine1":"","streetLine2":"","zipCode":"","city":"","state":"","country":"","addressFormat":"#streetLineOne\n#streetLineTwo\n#city, #state #zipCode"},"contact":{"email":"","phone":"","phoneFormatted":"","fax":"","faxFormatted":""},"ids":{"vat":"","tax":"","chamberOfCommerce":""},"payment":{"priceRange":"","currenciesAccepted":"","methods":""}}},"openingHours":{"useDefaults":true,"show":true,"alwaysOpen":false,"use24hFormat":false,"timezone":"","labels":{"closed":"","alwaysOpen":""},"days":{"monday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"tuesday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"wednesday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"thursday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"friday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"saturday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"sunday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"}}}},"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2021-05-23 06:11:45","updated":"2022-09-13 16:02:17","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/rakuha.com\" title=\"\u30db\u30fc\u30e0\">\u30db\u30fc\u30e0<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/rakuha.com\/?cat=2\" title=\"CTF\">CTF<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tSECCON Beginners CTF 2021 writeup\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"\u30db\u30fc\u30e0","link":"https:\/\/rakuha.com"},{"label":"CTF","link":"https:\/\/rakuha.com\/?cat=2"},{"label":"SECCON Beginners CTF 2021 writeup","link":"https:\/\/rakuha.com\/?p=109"}],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/rakuha.com\/index.php?rest_route=\/wp\/v2\/posts\/109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rakuha.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rakuha.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rakuha.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rakuha.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=109"}],"version-history":[{"count":3,"href":"https:\/\/rakuha.com\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/rakuha.com\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions\/129"}],"wp:attachment":[{"href":"https:\/\/rakuha.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rakuha.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rakuha.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}