{"id":41,"date":"2025-06-01T13:25:42","date_gmt":"2025-06-01T05:25:42","guid":{"rendered":"http:\/\/54.254.190.68\/note\/?p=41"},"modified":"2025-06-10T15:11:48","modified_gmt":"2025-06-10T07:11:48","slug":"subdomain-takeover","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/41","title":{"rendered":"Subdomain Takeover"},"content":{"rendered":"\n<p>\u5b50\u57df\u540d\u63a5\u7ba1\uff08Subdomain Takeover\uff09\u662f\u4e00\u7a2e\u653b\u64ca\u6280\u8853\uff0c\u7576\u5b50\u57df\u540d\u6307\u5411\u7684\u8cc7\u6e90\uff08\u5982\u96f2\u7aef\u670d\u52d9\u3001\u8a17\u7ba1\u670d\u52d9\u7b49\uff09\u5df2\u7d93\u88ab\u522a\u9664\u6216\u4e0d\u518d\u5b58\u5728\u6642\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u5229\u7528\u9019\u500b\u6a5f\u6703\u63a5\u7ba1\u8a72\u5b50\u57df\u540d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u653b\u64ca\u65b9\u5f0f<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>DNS \u8a2d\u5b9a\u932f\u8aa4\u6216\u907a\u7559<\/strong>\uff1a\u901a\u5e38\uff0c\u5b50\u57df\u540d\u63a5\u7ba1\u767c\u751f\u7684\u539f\u56e0\u662f\u5b50\u57df\u540d\u5728 DNS \u8a2d\u5b9a\u4e2d\u6307\u5411\u4e00\u500b\u5df2\u7d93\u4e0d\u518d\u5b58\u5728\u6216\u4e0d\u518d\u4f7f\u7528\u7684\u5916\u90e8\u670d\u52d9\u3002\u4f8b\u5982\uff0c\u5b50\u57df\u540d <code>sub.example.com<\/code> \u53ef\u80fd\u6307\u5411\u4e00\u500b\u88ab\u522a\u9664\u7684 Amazon S3 bucket \u6216\u8005\u4e00\u500b\u5df2\u7d93\u4e0d\u518d\u4f7f\u7528\u7684\u61c9\u7528\u7a0b\u5f0f\u3002<\/li>\n\n\n\n<li><strong>\u767c\u73fe\u672a\u4f7f\u7528\u7684\u5b50\u57df\u540d<\/strong>\uff1a\u653b\u64ca\u8005\u6703\u6383\u63cf\u76ee\u6a19\u7db2\u7ad9\u7684\u5b50\u57df\u540d\uff0c\u5c0b\u627e\u90a3\u4e9b\u6307\u5411\u4e0d\u5b58\u5728\u8cc7\u6e90\u7684\u5b50\u57df\u540d\u3002\u9019\u4e9b\u5b50\u57df\u540d\u53ef\u80fd\u6703\u8fd4\u56de 404 \u932f\u8aa4\u6216\u8005\u5176\u4ed6\u985e\u578b\u7684\u932f\u8aa4\u8a0a\u606f\uff0c\u8868\u660e\u8cc7\u6e90\u5df2\u7d93\u88ab\u79fb\u9664\u3002<\/li>\n\n\n\n<li><strong>\u8a3b\u518a\u6216\u5275\u5efa\u8cc7\u6e90<\/strong>\uff1a\u4e00\u65e6\u653b\u64ca\u8005\u78ba\u5b9a\u67d0\u500b\u5b50\u57df\u540d\u6307\u5411\u7684\u8cc7\u6e90\u4e0d\u5b58\u5728\uff0c\u4ed6\u5011\u53ef\u4ee5\u5617\u8a66\u5728\u76f8\u540c\u7684\u5e73\u53f0\u4e0a\u5275\u5efa\u4e00\u500b\u65b0\u7684\u8cc7\u6e90\uff0c\u4e26\u914d\u7f6e\u8a72\u8cc7\u6e90\u4ee5\u4f7f\u7528\u76ee\u6a19\u5b50\u57df\u540d\u3002\u4f8b\u5982\uff0c\u5982\u679c <code>sub.example.com<\/code> \u6307\u5411\u4e00\u500b\u5df2\u522a\u9664\u7684 Amazon S3 bucket <code>nonexistent-bucket<\/code>\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u540d\u70ba <code>nonexistent-bucket<\/code> \u7684\u65b0 S3 bucket\u3002<\/li>\n\n\n\n<li><strong>\u63a5\u7ba1\u5b50\u57df\u540d<\/strong>\uff1a\u7531\u65bc DNS \u8a2d\u5b9a\u4ecd\u7136\u6307\u5411\u8a72\u8cc7\u6e90\uff0c\u653b\u64ca\u8005\u5275\u5efa\u7684\u65b0\u8cc7\u6e90\u6703\u81ea\u52d5\u7d81\u5b9a\u5230\u9019\u500b\u5b50\u57df\u540d\u3002\u9019\u6a23\uff0c\u7576\u7528\u6236\u8a2a\u554f <code>sub.example.com<\/code> \u6642\uff0c\u5be6\u969b\u4e0a\u6703\u8a2a\u554f\u653b\u64ca\u8005\u63a7\u5236\u7684\u8cc7\u6e90\u3002<\/li>\n\n\n\n<li><strong>\u5229\u7528\u63a5\u7ba1\u7684\u5b50\u57df\u540d<\/strong>\uff1a\u653b\u64ca\u8005\u53ef\u4ee5\u5229\u7528\u88ab\u63a5\u7ba1\u7684\u5b50\u57df\u540d\u9032\u884c\u591a\u7a2e\u60e1\u610f\u6d3b\u52d5\uff0c\u4f8b\u5982\u767c\u5e03\u91e3\u9b5a\u7db2\u7ad9\u3001\u6ce8\u5165\u60e1\u610f\u4ee3\u78bc\u3001\u9032\u884c\u793e\u4ea4\u5de5\u7a0b\u653b\u64ca\u7b49\u3002<\/li>\n<\/ol>\n\n\n\n<p><\/p>\n\n\n\n<p>\u653b\u64ca\u67b6\u69cb\u53ef\u53c3\u8003\u4e0b\u5716<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/v2\/resize:fit:720\/format:webp\/1*uYHV9m5sSI1soeONgRATjw.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>refer:<br>https:\/\/0x3zzat.medium.com\/subdomain-takeover-vulnerability-and-how-to-find-it-using-a-simple-technique-c359c34960ea<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u60c5\u5883<\/h2>\n\n\n\n<p>Amazon S3 \u662f\u4e00\u500b\u96f2\u7aef\u5132\u5b58\u670d\u52d9\uff0c\u4f60\u53ef\u4ee5\u628a\u6a94\u6848\u4e0a\u50b3\u4e0a\u53bb\uff0c\u7136\u5f8c\u8a2d\u5b9a\u8ab0\u53ef\u4ee5\u5b58\u53d6\u3002\u5f88\u591a\u4eba\u6703\u7528 S3 \u4f86\u653e\u5716\u7247\u6216\u662f\u6574\u500b\u7db2\u7ad9\uff0c\u56e0\u70ba\u5b83\u4e5f\u53ef\u4ee5\u7528\u4f86\u8a17\u7ba1\u7db2\u7ad9\u3002S3 \u7684\u6bcf\u500b\u5132\u5b58\u7a7a\u9593\u53eb\u505a bucket\uff0c\u6bcf\u500b bucket \u90fd\u6709\u81ea\u5df1\u7684\u540d\u7a31\uff0c\u9019\u500b\u540d\u7a31\u5c0d\u61c9\u5230\u4e00\u500b\u7db2\u5740\u3002<\/p>\n\n\n\n<p>\u8209\u4f8b\u4f86\u8aaa\uff0c\u5982\u679c\u6211\u7684 bucket \u53eb\u505a systw\uff0c\u90a3\u5b83\u7684\u7db2\u5740\u5c31\u662f https:\/\/systw.s3.us-east-1.amazonaws.com\u3002S3 \u5f88\u65b9\u4fbf\uff0c\u6240\u4ee5\u5f88\u591a\u516c\u53f8\u6703\u628a\u524d\u7aef\u7db2\u7ad9\u653e\u5728\u4e0a\u9762\uff0c\u5c24\u5176\u662f\u975c\u614b\u7db2\u7ad9\uff0c\u9019\u6a23\u5c31\u4e0d\u7528\u81ea\u5df1\u7ba1\u7406\u4f3a\u670d\u5668\u4e86\u3002<\/p>\n\n\n\n<p>\u4e0d\u904e\uff0c\u9019\u500b\u7db2\u5740\u770b\u8d77\u4f86\u4e0d\u5920\u6f02\u4eae\u3002\u516c\u53f8\u901a\u5e38\u6703\u60f3\u8981\u7528\u81ea\u5df1\u7684\u7db2\u57df\u540d\u7a31\u4f86\u53d6\u4ee3\uff0cS3 \u4e5f\u6709\u63d0\u4f9b\u9019\u500b\u529f\u80fd\uff0c\u800c\u4e14\u8a2d\u5b9a\u5f88\u7c21\u55ae\u3002\u6240\u4ee5\u6703\u5148\u628a bucket \u540d\u7a31\u6539\u6210\u4f60\u60f3\u8981\u7684\u7db2\u57df\u540d\u7a31\uff0c\u6bd4\u5982 school.systw.net\u3002\u63a5\u8457\uff0c\u5728\u4f60\u7684 DNS \u8a2d\u5b9a\u88e1\uff0c\u65b0\u589e\u4e00\u500b CNAME \u8a18\u9304\uff0c\u5c07  school.systw.net \u6307\u5411 systw.s3.us-east-1.amazonaws.com\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u4f7f\u7528\u81ea\u5df1\u7684\u7db2\u57df https:\/\/school.systw.net \u4f86\u8a2a\u554f\u7db2\u7ad9\u4e86\u3002<\/p>\n\n\n\n<p>\u7522\u751f\u5b89\u5168\u554f\u984c\u7684\u539f\u56e0\u4e3b\u8981\u56e0\u70ba2\u500b\u4e8b\u60c5 \uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c\u7576\u4f60\u4e0d\u518d\u9700\u8981\u9019\u500b\u7db2\u7ad9\u6642\uff0c\u4e26\u522a\u6389 S3 bucket\u6642\u3002\u4f46\u662fDNS \u8a18\u9304\u6c92\u6709\u522a\uff0c\u56e0\u70ba\u7ba1\u7406 DNS \u8a2d\u5b9a\u7684\u53ef\u80fd\u662f\u5176\u4ed6\u90e8\u9580\uff0c\u4ed6\u5011\u6c92\u6709\u6536\u5230\u8981\u522a\u9664\u7684\u901a\u77e5\u3002\u6216\u662fDNS\u8a2d\u5b9a*\u842c\u7528\u5b57\u5143\u9810\u8a2d\u5c31\u662f\u6307\u5411 S3 bucket\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\uff0c\u5728 S3 \u4e2d\u5982\u679c\u4e00\u500b bucket \u540d\u7a31\u6c92\u88ab\u4f54\u7528\uff0c\u4f60\u53ef\u4ee5\u91cd\u65b0\u8a3b\u518a\u9019\u500b\u540d\u5b57\u3002\u6240\u4ee5\u653b\u64ca\u8005\u53ef\u4ee5\u91cd\u65b0\u5efa\u7acb\u4e00\u500b\u540c\u6a23\u540d\u7a31\u7684 bucket\uff0c\u5728\u52a0\u4e0a\u4e4b\u524dDNS\u8a18\u9304\u9084\u7559\u8457\uff0c\u56e0\u6b64\u9019\u539f\u672cschool.systw.net\u9019\u500b\u7db2\u57df\u6703\u6307\u5411\u65b0\u5efa\u7684 S3 bucket\uff0c\u800c\u88e1\u9762\u7684\u5167\u5bb9\u662f\u653b\u64ca\u8005\u63a7\u5236\u7684\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u9664\u4e86 S3 \u4ee5\u5916\uff0c\u9084\u6709\u4e00\u5927\u5806\u63d0\u4f9b\u985e\u4f3c\u529f\u80fd\u7684\u670d\u52d9\u90fd\u6709\u9019\u7a2e\u554f\u984c\uff0c\u8a73\u7d30\u6e05\u55ae\u53ef\u4ee5\u53c3\u8003\uff1a<a href=\"https:\/\/github.com\/EdOverflow\/can-i-take-over-xyz\" target=\"_blank\" rel=\"noreferrer noopener\">Can I take over XYZ<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6aa2\u6e2c\u5de5\u5177<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">sub404<\/h2>\n\n\n\n<p><a href=\"https:\/\/github.com\/r3curs1v3-pr0xy\/sub404.git\" target=\"_blank\" rel=\"noopener\">https:\/\/github.com\/r3curs1v3-pr0xy\/sub404.git<\/a><\/p>\n\n\n\n<p>\u662f\u4e00\u4e2a\u4f7f\u7528python\u7f16\u5199\u7684\u5de5\u5177\uff0c\u5229\u7528\u5f02\u6b65\u65b9\u5f0f\u6279\u91cf\u68c0\u67e5\u5b50\u57df\u52ab\u6301\u6f0f\u6d1e\u3002\u5b83\u4f1a\u6279\u91cf\u67e5\u8be2\u76ee\u6807URL\u7684\u72b6\u6001\uff0c\u901a\u8fc7404\u9875\u9762\u7684\u5185\u5bb9\u6765\u5224\u65ad\u662f\u5426\u5177\u6709\u5b50\u57df\u540d\u52ab\u6301\u6f0f\u6d1e\uff0c\u53e6\u5916\uff0c\u5b83\u8fd8\u4f1a\u901a\u8fc7\u83b7\u53d6CNAME\u6765\u8fdb\u884c\u68c0\u6d4b\uff0c\u8fd9\u4e2a\u5de5\u5177\u4f7f\u7528\u7684\u524d\u63d0\u662f\u5b89\u88c5\u4e86sublist3r \u548c subfinder\u3002<\/p>\n\n\n\n<p>\u7528\u6cd5\uff1a\u6383\u63cf\u5b50\u57df\u6e05\u55ae\u68c0\u67e5\u63a5\u7ba1\u6f0f\u6d1e <code>python3 sub404.py -f subdomain.txt<\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">nuclei<\/h2>\n\n\n\n<p>\u5982\u679c\u6709web\u7684subdomain\u53ef\u4ee5\u76f4\u63a5\u8dd1 <\/p>\n\n\n\n<p><code>$ subfinder -dL subdomains.txt  -t ~\/.local\/nuclei-templates\/http\/takeovers\/ <\/code><\/p>\n\n\n\n<p>\u4e5f\u53ef\u4ee5\u52a0\u500b\u904e\u6ffe\u5c07subdomain\u662fweb\u7684\u6e05\u55ae\uff0c\u5728\u505a\u5206\u6790<\/p>\n\n\n\n<p><code>$ subfinder -dL domains.txt | httpx -silent &gt; subdomains.txt ; nuclei -t ~\/.local\/nuclei-templates\/http\/takeovers\/ -l subdomains.txt<\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4eba\u5de5\u9a57\u8b49<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6aa2\u67e5CNAME\u8a18\u9304<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># dig vulnerable.yourdomain.com CNAME\n...omit...\n;; ANSWER SECTION:\nvulnerable.yourdomain.com. 300 IN    CNAME    example-deleted-app.herokuapp.com.\n...omit...<\/code><\/pre>\n\n\n\n<p>\u9019\u88e1\u986f\u793a vulnerable.yourdomain.com \u662f\u4e00\u500b CNAME\uff0c\u6307\u5411 example-deleted-app.herokuapp.com.\u3002\u9019\u5c31\u662f\u4f60\u9700\u8981\u78ba\u8a8d\u9019\u500b\u76ee\u6a19 herokuapp.com \u4e0a\u7684 example-deleted-app \u662f\u5426\u5df2\u522a\u9664\u6216\u53ef\u88ab\u8072\u660e\u7684\u76ee\u6a19\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6aa2\u67e5A\u8a18\u9304<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># dig vulnerable.yourdomain.com A\n...omit...\n;; ANSWER SECTION:\nvulnerable.yourdomain.com. 300 IN    A    192.0.2.100\n...omit...<\/code><\/pre>\n\n\n\n<p> \u9019\u88e1\u986f\u793a\u5b50\u7db2\u57df\u6307\u5411\u4e00\u500b IP \u4f4d\u5740 192.0.2.100\u3002\u4f60\u9700\u8981\u78ba\u8a8d\u9019\u500b IP \u4f4d\u5740\u662f\u5426\u662f\u4f60\u4ecd\u5728\u63a7\u5236\u7684\u4f3a\u670d\u5668\uff0c\u6216\u8005\u662f\u5426\u662f\u4e00\u500b\u5df2\u91cb\u653e\u7684 IP \u4f4d\u5740\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6aa2\u67e5NS\u8a18\u9304<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># dig vulnerable.yourdomain.com NS\n;; ANSWER SECTION:\nvulnerable.yourdomain.com. 3600 IN    NS    ns1.some-old-provider.com.\nvulnerable.yourdomain.com. 3600 IN    NS    ns2.some-old-provider.com.<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u5b50\u7db2\u57df\u7684 NS \u8a18\u9304\u6307\u5411\u4f60\u4e0d\u518d\u4f7f\u7528\u7684\u5916\u90e8\u540d\u7a31\u4f3a\u670d\u5668\uff0c\u800c\u8a72\u5916\u90e8\u540d\u7a31\u4f3a\u670d\u5668\u53c8\u53ef\u4ee5\u88ab\u653b\u64ca\u8005\u8a3b\u518a\u6216\u63a7\u5236\uff0c\u90a3\u9ebc\u9019\u4e5f\u662f\u4e00\u7a2e\u52ab\u6301\u7684\u98a8\u96aa\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a2a\u554f\u76ee\u6a19\u5b50\u7db2\u57df\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u700f\u89bd\u5668\u4e2d\u76f4\u63a5\u8a2a\u554f\u8a72\u5b50\u7db2\u57df (\u4f8b\u5982 http:\/\/vulnerable.yourdomain.com)\u3002<\/li>\n\n\n\n<li>\u89c0\u5bdf\u932f\u8aa4\u8a0a\u606f\uff1a \u5982\u679c\u8fd4\u56de\u7684\u662f\u7b2c\u4e09\u65b9\u670d\u52d9\u7684\u7279\u5b9a\u932f\u8aa4\u9801\u9762\uff0c\u4f8b\u5982\uff1a\n<ul class=\"wp-block-list\">\n<li>GitHub Pages \u7684 &#8220;There isn&#8217;t a GitHub Pages site here.&#8221; \u6216 &#8220;404&#8221; \u9801\u9762\uff0c\u4f46 URL \u4ecd\u662f\u4f60\u7684\u5b50\u7db2\u57df\u3002<\/li>\n\n\n\n<li>AWS S3 \u7684 &#8220;NoSuchBucket&#8221; \u932f\u8aa4\u3002<\/li>\n\n\n\n<li>Heroku \u7684 &#8220;No such app&#8221; \u6216 &#8220;Heroku | No such app&#8221; \u932f\u8aa4\u3002<\/li>\n\n\n\n<li>Shopify \u7684 &#8220;Sorry, this shop is unavailable.&#8221;\u3002<\/li>\n\n\n\n<li>\u5176\u4ed6\u96f2\u670d\u52d9\u63d0\u4f9b\u5546\u7684\u901a\u7528 404 \u6216\u7279\u5b9a\u932f\u8aa4\u9801\u9762\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u95dc\u9375\u662f\uff1a 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