{"id":457,"date":"2024-01-09T17:25:00","date_gmt":"2024-01-09T09:25:00","guid":{"rendered":"https:\/\/blog.taiyang.space\/?p=457"},"modified":"2024-01-08T17:29:09","modified_gmt":"2024-01-08T09:29:09","slug":"buuctf-crypto-%e5%8f%98%e5%bc%82%e5%87%af%e6%92%92","status":"publish","type":"post","link":"https:\/\/blog.taiyang.space\/?p=457","title":{"rendered":"BUUCTF-Crypto-\u53d8\u5f02\u51ef\u6492"},"content":{"rendered":"

<\/p>\n

1. \u9898\u76ee\u63cf\u8ff0<\/h2>\n

\u52a0\u5bc6\u5bc6\u6587\uff1aafZ_r9VYfScOeO_UL^RWUc<\/p>\n

\u683c\u5f0f\uff1aflag{ }<\/p>\n

\u62ff\u5230\u9898\u76ee\u7528\u666e\u901a\u51ef\u6492\u8dd1\u4e86\u4e0b\uff0c\u53d1\u73b0\u6ca1\u5565\u4e1c\u897f\"img\"<\/p>\n

2. \u89e3\u9898\u8fc7\u7a0b<\/h2>\n

google \u4e86\u4e00\u4e0b\u53d8\u5f02\u51ef\u6492\uff0c\u53d1\u73b0\u504f\u79fb\u91cf\u662f\u4f1a\u53d8\u7684<\/p>\n

afZ_r   \u5bf9\u5e94\u7684ASCII\u7801\u4e3a\uff1a97  102  90   95   114\nflag{   \u5bf9\u5e94\u7684ASCII\u7801\u4e3a\uff1a102 108  97  103   123\n         \u5bf9\u5e94\u7684\u504f\u79fb\u91cf\u4e3a\uff1a 5   6    7   8     9\n<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u51fa\u504f\u79fb\u91cf\u4f9d\u6b21 +1<\/p>\n
\u76f4\u63a5\u4e0a\u4ee3\u7801<\/p>\n
str = "afZ_r9VYfScOeO_UL^RWUc"\noffset = 5\n\nnewStr = ""\n\nfor i in str:\n    newStr += chr(ord(i) + offset)\n    offset += 1\n\nprint(newStr)\n<\/code><\/pre>\n
\u83b7\u5f97 flag\uff1aflag{Caesar_variation}<\/code><\/p>\n
3. \u6240\u9700\u5de5\u5177<\/h2>\n
\u65e0<\/p>\n
4. \u5199\u5728\u6700\u540e<\/h2>\n
\u672c\u6587\u5b8c<\/p>\n
\u656c\u7231\u4e0e\u660e\u5929\ud83c\udf39<\/p>\n
<\/body>
\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"
1. \u9898\u76ee\u63cf\u8ff0 \u52a0\u5bc6\u5bc6\u6587\uff1aafZ_r9VYfScOeO_UL^RWUc \u683c\u5f0f\uff1aflag{ } \u62ff\u5230\u9898\u76ee\u7528\u666e\u901a\u51ef […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[167,166,165],"class_list":["post-457","post","type-post","status-publish","format-standard","hentry","category-crypto","tag-crypto","tag-ctf","tag-165"],"yoast_head":"\nBUUCTF-Crypto-\u53d8\u5f02\u51ef\u6492 - #\u762b\u7537\u65e5\u8bb0<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.taiyang.space\/?p=457\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BUUCTF-Crypto-\u53d8\u5f02\u51ef\u6492 - #\u762b\u7537\u65e5\u8bb0\" \/>\n<meta property=\"og:description\" content=\"1. \u9898\u76ee\u63cf\u8ff0 \u52a0\u5bc6\u5bc6\u6587\uff1aafZ_r9VYfScOeO_UL^RWUc \u683c\u5f0f\uff1aflag{ } \u62ff\u5230\u9898\u76ee\u7528\u666e\u901a\u51ef […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.taiyang.space\/?p=457\" \/>\n<meta property=\"og:site_name\" content=\"#\u762b\u7537\u65e5\u8bb0\" \/>\n<meta property=\"article:published_time\" content=\"2024-01-09T09:25:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-01-08T09:29:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/picture.chentaiyang.space\/202401081724742.png\" \/>\n<meta name=\"author\" content=\"taiyang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"taiyang\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.taiyang.space\/?p=457#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.taiyang.space\/?p=457\"},\"author\":{\"name\":\"taiyang\",\"@id\":\"https:\/\/blog.taiyang.space\/#\/schema\/person\/5e3b9567310d4c4a328573992325178c\"},\"headline\":\"BUUCTF-Crypto-\u53d8\u5f02\u51ef\u6492\",\"datePublished\":\"2024-01-09T09:25:00+00:00\",\"dateModified\":\"2024-01-08T09:29:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.taiyang.space\/?p=457\"},\"wordCount\":9,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/blog.taiyang.space\/#\/schema\/person\/5e3b9567310d4c4a328573992325178c\"},\"keywords\":[\"Crypto\",\"CTF\",\"\u7f51\u5b89\"],\"articleSection\":[\"Crypto\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/blog.taiyang.space\/?p=457#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.taiyang.space\/?p=457\",\"url\":\"https:\/\/blog.taiyang.space\/?p=457\",\"name\":\"BUUCTF-Crypto-\u53d8\u5f02\u51ef\u6492 - 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