{"id":634,"date":"2025-03-08T17:16:25","date_gmt":"2025-03-08T09:16:25","guid":{"rendered":"http:\/\/39.104.51.85\/?p=634"},"modified":"2025-03-08T17:16:26","modified_gmt":"2025-03-08T09:16:26","slug":"ctf%e5%85%a5%e9%97%a8-%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e7%9a%84%e6%a0%88%e8%bf%81%e7%a7%bb","status":"publish","type":"post","link":"http:\/\/39.104.51.85\/index.php\/2025\/03\/08\/ctf%e5%85%a5%e9%97%a8-%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e7%9a%84%e6%a0%88%e8%bf%81%e7%a7%bb\/","title":{"rendered":"CTF\u5165\u95e8\u2014\u2014\u4ece\u96f6\u5f00\u59cb\u7684\u6808\u8fc1\u79fb"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >\u5185\u5bb9<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/08\/ctf%e5%85%a5%e9%97%a8-%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e7%9a%84%e6%a0%88%e8%bf%81%e7%a7%bb\/#%E4%BB%80%E4%B9%88%E6%98%AF%E6%A0%88%E8%BF%81%E7%A7%BB\" title=\"\u4ec0\u4e48\u662f\u6808\u8fc1\u79fb\">\u4ec0\u4e48\u662f\u6808\u8fc1\u79fb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/08\/ctf%e5%85%a5%e9%97%a8-%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e7%9a%84%e6%a0%88%e8%bf%81%e7%a7%bb\/#%E6%A0%88%E8%BF%81%E7%A7%BB%E7%9A%84%E5%8E%9F%E7%90%86\" title=\"\u6808\u8fc1\u79fb\u7684\u539f\u7406\">\u6808\u8fc1\u79fb\u7684\u539f\u7406<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BB%80%E4%B9%88%E6%98%AF%E6%A0%88%E8%BF%81%E7%A7%BB\"><\/span>\u4ec0\u4e48\u662f\u6808\u8fc1\u79fb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6240\u8c13\u6808\u8fc1\u79fb\uff0c\u4e00\u822c\u800c\u8a00\uff0c\u662f\u5728\u6808\u6ea2\u51fa\u91cf\u5f88\u5c0f\uff08\u4e00\u822c\u53ea\u80fd\u6ea2\u51fa\u5230\u8fd4\u56de\u5730\u5740\u5904\uff09\uff0c\u65e0\u6cd5\u6253\u4e00\u4e2a\u5b8c\u6574\u7684ROP\u94fe\u7684\u60c5\u51b5\u4e0b\uff0c\u5229\u7528\u4e24\u6b21leave ret\uff0c\u5c06\u6808\u5e27\u4f4d\u7f6e\u6539\u53d8\u5230\u6211\u53ef\u63a7\u7684\u5730\u5740\u4e0a\uff0c\u5728\u8fd9\u4e2a\u5730\u5740\u4e0a\u6211\u9884\u5148\u5df2\u7ecf\u5199\u597d\u4e86\u4e00\u6bb5payload\uff0c\u4e8e\u662f\u5728\u6808\u8fc1\u79fb\u8fc7\u540e\u7a0b\u5e8f\u5c31\u4f1a\u7ee7\u7eed\u6267\u884c\u6211\u9884\u5148\u5728\u522b\u5904\u5e03\u7f6e\u597d\u7684payload\uff0c\u90a3\u4e48\u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u597d\u597d\u5730\u6765\u89e3\u91ca\u4e00\u4e0b\u6808\u8fc1\u79fb\u7684\u539f\u7406\u662f\u4ec0\u4e48<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%88%E8%BF%81%E7%A7%BB%E7%9A%84%E5%8E%9F%E7%90%86\"><\/span>\u6808\u8fc1\u79fb\u7684\u539f\u7406<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u9996\u5148\uff0c\u6211\u4eec\u7f16\u5199\u4e00\u4e2ademo\u51fd\u6570\uff0c\u6765\u5c55\u793a\u4e00\u4e2a\u7a0b\u5e8f\u6808\u5e27\u7684\u5efa\u7acb\u4e0e\u6d88\u4ea1\u8fc7\u6210<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void demo()\n{\n\tchar buf&#91;0x20];\n\treturn 0;\n}\nint main()\n{\n\tdemo();\n\treturn 0;\n}<\/code><\/pre>\n\n\n\n<p>IDA\u6253\u5f00\u770b\u4e00\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"940\" height=\"166\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-635\"  sizes=\"(max-width: 940px) 100vw, 940px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fdb\u5165demo\u7684\u6307\u4ee4\u662fcall\u6307\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"902\" height=\"412\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-636\"  sizes=\"(max-width: 902px) 100vw, 902px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u6761\u6307\u4ee4\u76f8\u5f53\u4e8e\u5e72\u4e86\u4e24\u4ef6\u4e8b\uff1a\u628a\u5f53\u524d\u6307\u4ee4\uff08call\uff09\u7684\u4e0b\u4e00\u6761\u6307\u4ee4\uff08mov\uff09\u7684\u5730\u5740\u538b\u6808\uff0c\u8df3\u8f6c\u5230demo<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"600\" height=\"526\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-638\"  sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fdb\u5165demo\u51fd\u6570\u540e\uff0c\u6211\u4eec\u91cd\u70b9\u5173\u6ce8push rbp;mov rbp,rsp;sub rsp 30h\u8fd9\u4e09\u6761\u6307\u4ee4\uff0c\u5728\u8fd9\u91cc\u6211\u8bb2\u8be6\u7ec6\u8bb2\u89e3\u6808\u5e27\u7684\u6784\u5efa\u4e0e\u6d88\u4ea1\u8fc7\u7a0b<\/p>\n\n\n\n<p>\u6267\u884ccall\u6307\u4ee4\u540e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"297\" height=\"344\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-7.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-640\"  sizes=\"(max-width: 297px) 100vw, 297px\" \/><\/div><\/figure>\n\n\n\n<p>\u6267\u884cpush rbp\u540e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"299\" height=\"318\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-641\"  sizes=\"(max-width: 299px) 100vw, 299px\" \/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6rsp\u4f1a\u5411\u4e0b\u79fb\u52a8\uff0c\u540c\u65f6\u5c06\u5f53\u524d\u7684rbp\u538b\u6808<\/p>\n\n\n\n<p>\u6267\u884cmov rbp,rsp\u540e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"295\" height=\"307\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-642\"  sizes=\"(max-width: 295px) 100vw, 295px\" \/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6rbp\uff0crsp\u7684\u503c\u76f8\u540c<\/p>\n\n\n\n<p>\u6267\u884csub rsp,30h\u4e4b\u540e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-10.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"294\" height=\"372\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-10.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-643\"  sizes=\"(max-width: 294px) 100vw, 294px\" \/><\/div><\/figure>\n\n\n\n<p>\u4ece\u800c\u4e3abuf\u5f00\u8f9f\u4e86\u51fd\u6570\u6808\u5e27<\/p>\n\n\n\n<p>\u5728\u51fd\u6570\u6d88\u4ea1\u65f6\uff0c\u4f1a\u6267\u884cleave;ret\uff1b\u800cleave\u6307\u4ee4\uff0c\u5c31\u662f\u6211\u4eec\u4eca\u5929\u7684\u4e3b\u89d2\uff0c\u8fd9\u6761\u6307\u4ee4\u76f8\u5f53\u4e8e\u4e24\u6761\u6307\u4ee4\uff1amov rsp,rbp;pop rbp<\/p>\n\n\n\n<p>\u90a3\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u6b63\u5e38\u51fd\u6570\u8c03\u7528\u7ed3\u675f\u7684\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<p>\u6267\u884cmov rsp,rbp\u4e4b\u540e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-11.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"297\" height=\"381\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-11.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-644\"  sizes=\"(max-width: 297px) 100vw, 297px\" \/><\/div><\/figure>\n\n\n\n<p>\u6267\u884cpop rbp\u4e4b\u540e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-12.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"291\" height=\"358\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-12.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-645\"  sizes=\"(max-width: 291px) 100vw, 291px\" 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