{"id":520,"date":"2025-04-18T12:49:58","date_gmt":"2025-04-18T04:49:58","guid":{"rendered":"http:\/\/47.121.202.229\/?p=520"},"modified":"2025-04-18T12:49:59","modified_gmt":"2025-04-18T04:49:59","slug":"upload-labs%e9%80%9a%e5%85%b3%e8%ae%b0%e5%bd%95","status":"publish","type":"post","link":"http:\/\/47.121.202.229\/?p=520","title":{"rendered":"Upload-Labs\u901a\u5173\u8bb0\u5f55"},"content":{"rendered":"\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n

pass3 Apache\u89e3\u6790\u6f0f\u6d1e<\/h2>\n\n\n\n

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\"\"<\/div><\/figure>\n\n\n\n
$deny_ext = array('.asp','.aspx','.php','.jsp');<\/code><\/pre>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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pass6 \u5927\u5199\u7ed5\u8fc7<\/h2>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
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\u7528docker\u642d\u4e86\u4e00\u4e2aupload-labs windows\uff0c\u5c1d\u8bd5\u5728\u8fd9\u4e0a\u9762\u8fdb\u884c\u5927\u5199\u7ed5\u8fc7<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
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pass8  .\u7ed5\u8fc7<\/h2>\n\n\n\n
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\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
pass9  \u9ed8\u8ba4\u6570\u636e\u6d41\u622a\u65ad<\/h2>\n\n\n\n
\u5206\u6790\u6e90\u7801\uff0c\u4e00\u5806\u9ed1\u540d\u5355\uff0c\u5e76\u4e14\u4fdd\u5b58\u7684\u65f6\u5019\u662f\u7528\u968f\u673a\u6570\u52a0\u4e0a\u63d0\u53d6\u7684\u540e\u7f00\u540d\u8fdb\u884c\u4fdd\u5b58\uff0c\u6240\u4ee5\u6ca1\u529e\u6cd5\u7528\u540e\u7f00\u52a0\u70b9\u6216\u7a7a\u683c\uff0c\u6216. .\u7684\u65b9\u5f0f\u7ed5\u8fc7\u4e86\u3002\u4f46\u662f\u53d1\u73b0\u4ee3\u7801\u5e76\u6ca1\u6709\u5bf9\u540e\u7f00\u540d\u53bb\u9664::$DATA\u3002::DATA\u5728NTFS\u6587\u4ef6\u7cfb\u7edf\u4e2d\u662f\u9ed8\u8ba4\u7684\u6570\u636e\u6d41\uff0c\u5373a.php::$DATA\u548ca.php\u662f\u7b49\u4ef7\u7684\u3002\u5728\u5b58\u50a8\u65f6\uff0cwindows\u4f1a\u628a::$DATA\u622a\u65ad$\u6545\u4fdd\u5b58\u7684\u662fa.php\uff0c\u8fbe\u5230\u6728\u9a6c\u4e0a\u4f20\u76ee\u7684<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
pass10  . .\u7ed5\u8fc7<\/h2>\n\n\n\n
\u9996\u5148\u770b\u6e90\u7801\uff0c\u57fa\u672c\u7684\u5bf9\u6587\u4ef6\u540d\u540e\u7f00\u8fc7\u6ee4\u90fd\u6709\uff0c\u9ed1\u540d\u5355\u4e5f\u57fa\u672c\u4e0a\u6ca1\u6709\u7a7a\u5b50\u53ef\u94bb\u3002\u53d1\u73b0\u6700\u540e\u4fdd\u5b58\u6587\u4ef6\u7684\u65f6\u5019\u662f\u76f4\u63a5\u4ee5\u539f\u59cb\u6587\u4ef6\u540d\u4fdd\u5b58\uff0c\u6545\u8003\u8651. .\u7ed5\u8fc7\u3002\u5047\u8bbe\u6211\u4e0a\u4f20\u7684\u539f\u59cb\u6587\u4ef6\u662f1.php. .   \uff0c\u9996\u5148\u5220\u9664\u672b\u5c3e\u7684\u70b9\uff0c\u53d8\u6210\u53bb1.php. (php\u540e\u9762\u662f\u70b9\u7a7a\u683c)\uff0c\u7136\u540e\u4ee5.\u5206\u5272\u6587\u4ef6\u540e\u7f00\u540d\uff0c\u6b64\u65f6\u540e\u7f00\u540d\u4e3a\u70b9\u7a7a\u683c\uff0c\u4e4b\u540e\u7684\u8fc7\u6ee4\u90fd\u4e0d\u5f71\u54cd\u540e\u7f00\u540d\u3002\u70b9\u7a7a\u683c\u4e0d\u5728\u9ed1\u540d\u5355\u5185\uff0c\u6545\u76f4\u63a5\u5c06\u539f\u59cb\u6587\u4ef6\u540d1.php. .\u5b58\u50a8\u3002windows\u7cfb\u7edf\u5b58\u50a8\u65f6\u81ea\u52a8\u622a\u65ad\u540e\u9762\u7684\u70b9\u7a7a\u683c\u70b9\uff0c\u5b58\u50a8\u4e3a1.php\uff0c\u6728\u9a6c\u4e0a\u4f20\u6210\u529f\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
pass11  \u53cc\u5199\u540e\u7f00\u7ed5\u8fc7<\/h2>\n\n\n\n
\u9996\u5148\u5206\u6790\u6e90\u7801\u3002\u6e90\u7801\u5bf9filename\u539f\u59cb\u6587\u4ef6\u540d\u8fdb\u884c\u64cd\u4f5c\uff0c\u5220\u9664\u5176\u4e2d\u7684\u5b58\u5728\u4e8e\u9ed1\u540d\u5355\u4e2d\u7684\u5b50\u5b57\u7b26\u4e32\uff0c\u5c06\u5220\u9664\u540e\u7684\u5b57\u7b26\u4e32\u4f5c\u4e3a\u5904\u7406\u540e\u7684\u8981\u4fdd\u5b58\u7684\u6587\u4ef6\u540d\u3002\u53ef\u4ee5\u4f7f\u7528\u53cc\u5199\u540e\u7f00\u6765\u7ed5\u8fc7\uff0c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u5047\u8bbe\u6211\u4e0a\u4f20\u7684\u662fa.pphphp\uff0c\u8bfb\u5230\u7b2c\u4e09\u4f4d\u65f6\uff0c\u4e00\u76f4\u8bfb\u5230\u7b2c\u4e94\u4f4d\uff0c\u53d1\u73b0\u7b2c\u4e09\u4f4d\u5230\u7b2c\u4e94\u4f4d\u662fphp\uff0c\u56e0\u6b64\u628aphp\u5220\u6389\uff1b\u4e4b\u540e\u7ee7\u7eed\u8bfb\uff0c\u540e\u9762\u662fhp\uff0c\u5e76\u4e0d\u5b58\u5728\u4e8e\u9ed1\u540d\u5355\u4e2d\uff1b\u4f46\u662f\u5220\u9664\u7b2c\u4e09\u4f4d\u5230\u7b2c\u4e94\u4f4d\u7684php\u540e\uff0c\u6587\u4ef6\u540d\u7684\u540e\u7f00\u53d8\u6210\u4e86php\uff0c\u5e76\u4e14\u4fdd\u5b58\u5728\u4e86\u670d\u52a1\u5668\u4e0a\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u76f4\u63a5\u6293\u5305\u6539a.php\u7684\u540e\u7f00\u540d\u4e3aa.pphphp\u4e0a\u4f20\u6210\u529f\uff0c\u8681\u5251\u8fde\u63a5\u6210\u529f<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
pass12 \u767d\u540d\u5355  \u7a7a\u5b57\u7b26\u622a\u65ad  %00<\/h2>\n\n\n\n
\u9996\u5148\u89c2\u5bdf\u6e90\u7801\u3002\u53d1\u73b0\u5176\u4e2d\u6709\u4e00\u4e2a\u6587\u4ef6\u540e\u7f00\u540d\u7684\u767d\u540d\u5355\uff0c\u5e76\u4e14\u628a\u7b2c\u4e00\u4e2a\u70b9\u540e\u9762\u7684\u5b57\u7b26\u4e32\u5f53\u4f5c\u662f\u540e\u7f00\u540d\u3002\u5982\u679c\u540e\u7f00\u540d\u5b58\u5728\u4e8e\u767d\u540d\u5355\u4e2d\uff0c\u90a3\u4e48\u4ece$_GET\u5168\u5c40\u6570\u7ec4\u4e2d\u83b7\u53d6\u8def\u5f84\uff0c\u62fc\u63a5\u4e00\u4e2a\u968f\u673a\u6570\u518d\u62fc\u63a5\u540e\u7f00\u540d\uff0c\u4f5c\u4e3a\u6700\u540e\u7684\u4fdd\u5b58\u8def\u5f84\u3002\u65e2\u7136\u4fdd\u5b58\u7684\u8def\u5f84\u540d\u4eceGET\u65b9\u6cd5\u4e2d\u83b7\u53d6\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u8fd9\u65b9\u9762\u4e0a\u505a\u6587\u7ae0\u3002<\/p>\n\n\n\n
\u5728c\u8bed\u8a00\u4e2d\uff0c\u4e00\u4e2a\u5b57\u7b26\u4e32\u7ed3\u5c3e\u662f\u4ee5\u7a7a\u5b57\u7b26\uff080x00\uff09\u4f5c\u4e3a\u6807\u5fd7\u3002\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u8bfb\u5230\u7a7a\u5b57\u7b26\u5c31\u4e0d\u4f1a\u8bfb\u4e0b\u53bb\u4e86\u3002php\u662f\u7528c\u8bed\u8a00\u5199\u7684\uff0c\u56e0\u6b64\u4fdd\u7559\u4e86\u8fd9\u4e2a\u7279\u6027\u3002\u5728\u6e90\u7801\u4e2d\uff0c\u4e24\u4e2a\u8def\u5f84\uff08$temp_file   $img_file\uff09\u90fd\u662f\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u53ef\u4ee5\u8003\u8651\u5728\u771f\u5b9e\u7684\u8def\u5f84\u540d\u4e2d\u6dfb\u52a0\u7a7a\u5b57\u7b26\uff0c\u4ee5\u622a\u65ad\u540e\u9762\u7684\u5b57\u7b26\uff0c\u4f2a\u9020\u8def\u5f84\u3002\u8fd9\u4e00\u5173\u662f\u5728GET\u8bf7\u6c42\u4e0a\u4f20\u9012\u8def\u5f84\uff0c\u56e0\u6b64\u7a7a\u5b57\u7b26\u8981\u7528URL\u7f16\u7801\u3002\u5bf9\u4e00\u4e2a\u5b57\u7b26\u7684URL\u7f16\u7801\uff0c\u662f\u628a\u5176\u7684ASICC\u7801\u8f6c\u6362\u621016\u8fdb\u5236\uff0c\u518d\u5728\u524d\u9762\u52a0%\u3002\u7a7a\u5b57\u7b26ASICC\u7801\u503c\u662f0\uff0c\u56e0\u6b64\u5728URL\u7f16\u7801\u4e2d\u5c31\u662f%00\u3002
<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u6211\u4eec\u4e0a\u4f20a.png\uff0c\u5176\u4e2d\u5185\u5bb9\u662f\u4e00\u53e5\u8bdd\u6728\u9a6c\u3002\u5148\u6293\u4e2a\u5305\uff0c\u5bf9save_path\u8fdb\u884c\u4fee\u6539\uff1asave_path=..\/upload\/a.php%00\/     \u5728\u540e\u7aef\u5b8c\u6210\u62fc\u63a5\u540e\uff0c\u5b58\u50a8\u7684\u8def\u5f84\u540d\u5c31\u662f..\/upload\/a.php%00\/a.png<\/p>\n\n\n\n
%00\u963b\u65ad\u4e86\u540e\u9762\u7684\u5b57\u7b26\uff0c\u6240\u4ee5\u771f\u5b9e\u4fdd\u5b58\u7684\u8def\u5f84\u540d\u662f..\/upload\/a.php  \u8fd9\u6837\u6728\u9a6c\u5c31\u4e0a\u4f20\u6210\u529f\u4e86\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
pass13  \u7a7a\u5b57\u7b26\u622a\u65ad  0x00<\/h2>\n\n\n\n
\u9996\u5148\u5206\u6790\u6e90\u7801\u3002\u53d1\u73b0\u4f9d\u65e7\u662f\u4e0a\u4f20\u8def\u5f84\u53ef\u63a7\uff0c\u4f46\u662f\u662f\u4ee5POST\u7684\u65b9\u5f0f\u4f20\u9012\u4e0a\u4f20\u8def\u5f84\u3002\u4f9d\u65e7\u8003\u8651\u7a7a\u5b57\u7b26\u622a\u65ad\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4e0a\u4f20a.png\uff08\u5185\u5bb9\u662f\u4e00\u53e5\u8bdd\u6728\u9a6c\uff09\uff0c\u6293\u5305\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u53d1\u73b0\u9ed8\u8ba4\u7684\u6587\u4ef6\u4e0a\u4f20\u8def\u5f84\u3002\u8fd9\u91cc\u4e0d\u518d\u662fGET\u8bf7\u6c42\u5728URL\u680f\u4f20\u53c2\uff0c\u800c\u662fPOST\u4f20\u53c2\uff0c\u56e0\u6b64\u7a7a\u5b57\u7b26\u7684\u7f16\u7801\u4e0d\u9700\u8981URL\u7f16\u7801\u3002\u4f46\u662f\u4e5f\u4e0d\u80fd\u76f4\u63a5\u51990x00\uff0c\u4f1a\u88ab\u9ed8\u8ba4\u5f53\u6210\u662f\u5b57\u7b26\u4e32\u3002\u6b63\u786e\u7684\u505a\u6cd5\u662f\u5148\u5728a.php\u540e\u5f04\u4e00\u4e2a\u5360\u4f4d\u7b26\uff0c\u7136\u540e\u628a\u5b83\u752816\u8fdb\u5236\u768400\u66ff\u4ee3\u3002\u8fd9\u6837\u5c31\u63d2\u5165\u7a7a\u5b57\u7b26\u4e86\u3002forward\uff0c\u4e0a\u4f20\u6210\u529f\uff0c\u8fde\u63a5upload\/a.php\uff0c\u8fde\u63a5\u6210\u529f<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
pass14  \u56fe\u7247\u5b57\u8282\u6807\u8bc6\u7ed5\u8fc7<\/h2>\n\n\n\n
\u5bf9\u4e8e\u4e0d\u540c\u683c\u5f0f\u7684\u56fe\u7247\uff0c\u5728\u5185\u5bb9\u7684\u5f00\u5934\u90fd\u4f1a\u6709\u4e24\u4e2a\u5b57\u8282\u7684\u6807\u8bc6\u7b26\uff1a<\/p>\n\n\n\n
    \n
  • JPEG\/JFIF(\u5e38\u89c1\u7684\u7167\u7247\u683c\u5f0f):\u5934\u4e24\u4e2a\u5b57\u8282\u4e3a\u00b70xFF 0xD8\u3002<\/li>\n\n\n\n
  • PNG(\u65e0\u635f\u538b\u7f29\u683c\u5f0f):\u5934\u4e24\u4e2a\u5b57\u8282\u4e3a\u00b70x89 0x50\u3002<\/li>\n\n\n\n
  • GIF(\u652f\u6301\u52a8\u753b\u7684\u56fe\u50cf\u683c\u5f0f):\u5934\u4e24\u4e2a\u5b57\u8282\u4e3a\u00b70x47 0x49\u3002<\/li>\n\n\n\n
  • BMP(Windows \u4f4d\u56fe\u683c\u5f0f):\u5934\u4e24\u4e2a\u5b57\u8282\u4e3a\u00b70x42 0x4D\u3002<\/li>\n\n\n\n
  • TIFF(\u6807\u7b7e\u56fe\u50cf\u6587\u4ef6\u683c\u5f0f):\u5934\u4e24\u4e2a\u5b57\u8282\u53ef\u4ee5\u662f\u4e0d\u540c\u7684\u6570\u503c\u3002<\/li>\n<\/ul>\n\n\n\n
    \u8fd9\u5173\u7684\u8981\u6c42\u662f\u4e0a\u4f20\u56fe\u7247\u7801\uff0c\u8be5\u9776\u573a\u5b58\u5728\u6587\u4ef6\u5305\u542b\u6f0f\u6d1e\u7528\u4e8e\u6d4b\u8bd5\u56fe\u7247\u7801\u3002\u9996\u5148\u5206\u6790\u6e90\u7801\uff0c\u53d1\u73b0\u4ed6\u4f1a\u4ee5\u4e8c\u8fdb\u5236\u7684\u65b9\u5f0f\u8bfb\u53d6\u524d\u9762\u4e24\u4e2a\u5b57\u8282\uff0c\u5e76\u628a\u8fd9\u4e24\u4e2a\u5b57\u8282\u7684\u5341\u8fdb\u5236\u8868\u793a\u6570\u62fc\u63a5\u8d77\u6765\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u56e0\u6b64\u601d\u8def\u5c31\u5f88\u7b80\u5355\u4e86\uff0c\u76f4\u63a5\u628a\u6728\u9a6c\u683c\u5f0f\u6539\u6210\u56fe\u7247\u683c\u5f0f\uff0c\u5e76\u5728\u524d\u9762\u4e24\u4e2a\u5b57\u8282\u6dfb\u52a0\u5bf9\u5e94\u7684\u56fe\u7247\u6807\u8bc6\u5b57\u8282\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u4e0a\u4f20a.png\uff0c\u6210\u529f\u901a\u8fc7\u9a8c\u8bc1\uff0c\u5e76\u5229\u7528\u6587\u4ef6\u5305\u542b\u6f0f\u6d1e\u8fdb\u884c\u8fde\u63a5\uff0c\u8fde\u63a5\u6210\u529f<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    pass15  \u56fe\u7247\u9a6c\u7ed5\u8fc7 && getimagesize()\u51fd\u6570<\/h2>\n\n\n\n
    \u9996\u5148\u5206\u6790\u6e90\u7801\uff1a\u901a\u8fc7getimagesize()\u83b7\u53d6\u56fe\u7247\u7684\u5143\u6570\u636e\uff08getimagesize()\u51fd\u6570\u662fphp\u4e2d\u4e00\u4e2a\u7528\u4e8e\u68c0\u6d4b\u6587\u4ef6\u4fe1\u606f\u7684\u6838\u5fc3\u51fd\u6570\uff0c\u5b8c\u5168\u57fa\u4e8e\u6587\u4ef6\u5185\u5bb9\u6765\u8fd4\u56de\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\uff0c\u6570\u7ec4\u5b58\u50a8\u56fe\u7247\u5143\u6570\u636e\uff09\uff0c\u5176\u4e2d\u7b2c\u4e8c\u9879\u662f\u56fe\u7247\u7c7b\u578b\u3002\u5728\u767d\u540d\u5355\u4e2d\u627e\u662f\u5426\u5b58\u5728\u8fd4\u56de\u7684\u56fe\u7247\u7c7b\u578b\uff0c\u5982\u679c\u662f\u7684\u8bdd\u8fd4\u56de\u5b58\u5728\uff0c\u5373\u8be5\u6587\u4ef6\u662f\u56fe\u7247\u6587\u4ef6\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u4f46\u662fgetimagesize()\u51fd\u6570\u6709\u4e00\u4e2a\u7f3a\u9677\uff0c\u5c31\u662f\u6211\u5728\u5176\u4e2d\u63d2\u5165\u4e00\u53e5\u8bdd\u6728\u9a6c\uff0c\u56e0\u4e3a\u5bf9\u56fe\u7247\u5185\u5bb9\u6574\u4f53\u5f71\u54cd\u4e0d\u5927\uff0c\u6240\u4ee5getimagesize()\u8fd4\u56de\u7684\u8fd8\u662f\u56fe\u7247\u7c7b\u578b\u3002\u56e0\u6b64\u53ef\u4ee5\u76f4\u63a5\u5728\u4e00\u4e2a\u6b63\u5e38\u56fe\u7247\u540e\u9762\u52a0\u4e00\u53e5\u8bdd\u6728\u9a6c\uff0c\u518d\u901a\u8fc7\u6587\u4ef6\u5305\u542b\u6f0f\u6d1e\u8fde\u63a5\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u4e0a\u4f20\u4e86\u6210\u529f\uff0c\u4f46\u662f\u8bbf\u95ee\u65f6\u63d0\u793a\u201cWarning: Unexpected character in input: ‘ in D:\\hackertools\\phpstudy\\phpstudy_pro\\WWW\\upload-labs-master\\upload\\2920250418084519.jpeg on line 489  \u201d\u7684\u62a5\u9519\u4fe1\u606f\u3002\u7ecf\u68c0\u67e5\u53d1\u73b0\uff0c\u662f\u56e0\u4e3aphp.ini\u4e2d\u8bbe\u7f6e\u4e86short_open_tag=On<\/strong>\u65f6\u4f1a\u628a\u201c <? \u201d \u5f53\u6210php\u4ee3\u7801\u7684\u5f00\u5934\u4ece\u800c\u5f00\u59cb\u89e3\u6790\u3002\u6211\u5c06short_open_tag<\/strong>\u8bbe\u7f6e\u4e3a\u4e86OFF<\/strong>\u5c31\u6ca1\u6709\u62a5\u9519\u4e86\u3002<\/p>\n\n\n\n
    \u8681\u5251\u6d4b\u8bd5\u8fde\u63a5\uff0c\u8fde\u63a5\u6210\u529f<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    pass16  \u56fe\u7247\u9a6c &&  exif_imagetype()<\/h2>\n\n\n\n
    \u9996\u5148\u5206\u6790\u6e90\u7801\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2aisImage()\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u4f7f\u7528exif_imagetype()\u51fd\u6570\u6765\u5224\u65ad\u56fe\u7247\u7c7b\u578b\u3002\u8fd9\u4e2a\u51fd\u6570\u53ea\u68c0\u67e5\u6587\u4ef6\u7684\u5934\u90e8\u5b57\u8282\u6765\u5224\u65ad\u6587\u4ef6\u7c7b\u578b\uff0c\u56e0\u6b64\u6bd4\u8f83\u597d\u7ed5\u8fc7\uff0c\uff08\u6548\u7387\u4e5f\u6bd4\u8f83\u9ad8\uff09\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u8fd8\u662f\u4e00\u6837\u7684\u6784\u9020\u56fe\u7247\u9a6c\uff0c\u4e0a\u4f20\u56fe\u7247\u9a6c\uff0c\u5229\u7528include.php\u8fdb\u884c\u8fde\u63a5\u3002\u8fd9\u91cc\u7528\u4e0a\u4e00\u5173\u6784\u9020\u7684\u56fe\u7247\u9a6chack.jpg<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n

    pass17 \u4e8c\u6b21\u6e32\u67d3\u7ed5\u8fc7<\/h2>\n\n\n\n
    \u9996\u5148\u5206\u6790\u6e90\u7801\u3002\u9996\u5148\u9a8c\u8bc1\u672b\u5c3e\u7684\u6587\u4ef6\u540e\u7f00\u662f\u4e0d\u662f\u4e09\u4e2a\u540e\u7f00\u4e4b\u4e00\uff0c\u5982\u679c\u662f\u7684\u8bdd\u5148\u628a\u6587\u4ef6\u4ece\u4e34\u65f6\u76ee\u5f55\u5b58\u50a8\u5230\u672c\u5730\uff1b\u63a5\u7740\u5229\u7528imagecreatefromjpeg()\u51fd\u6570\u8bfb\u53d6\u4f20\u5165\u7684\u56fe\u50cf\u6587\u4ef6\u5185\u5bb9\uff0c\u91cd\u5199\u4e00\u4e2a\u65b0\u7684\u56fe\u50cf\u6587\u4ef6\uff0c\u8fd4\u56de\u4e00\u4e2a\u56fe\u50cf\u8d44\u6e90\u7ed9$im\u3002\u6210\u529f\u7684\u8bdd\u5229\u7528imagejpeg()\u51fd\u6570\u5c06\u56fe\u50cf\u8d44\u6e90\u52a0\u8f7d\u5230\u65b0\u521b\u5efa\u7684\u8def\u5f84\u4e2d\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u53ef\u4ee5\u663e\u7136\u53d1\u73b0\uff0c\u539f\u59cb\u6587\u4ef6\u53ea\u8981\u80fd\u7ed5\u8fc7\uff0c\u5c31\u4f1a\u77ed\u6682\u5730\u505c\u7559\u5728\u670d\u52a1\u5668\u4e2d\u3002\u56e0\u6b64\u53ef\u4ee5\u8003\u8651\u6761\u4ef6\u7ade\u4e89\u7ed5\u8fc7\u3002\u540c\u65f6\uff0cimagecreatefromjpeg()\u5bf9\u56fe\u50cf\u6587\u4ef6\u91cd\u5199\uff0c\u5e76\u4e0d\u4f1a\u5b8c\u5168\u6539\u53d8\u4ed6\u7684\u4e8c\u8fdb\u5236\u7f16\u7801\uff0c\u5b58\u5728\u4e00\u4e9b\u4e8c\u8fdb\u5236\u7247\u6bb5\u662f\u5b8c\u5168\u4e0d\u53d8\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728\u8fd9\u4e9b\u7247\u6bb5\u4e2d\u63d2\u5165\u4e00\u53e5\u8bdd\u6728\u9a6c\uff0c\u91cd\u5199\u4e4b\u540e\u6728\u9a6c\u4e0d\u4f1a\u88ab\u8986\u76d6\u6389\u3002\u8fd9\u91cc\u7528\u7ed5\u8fc7\u91cd\u5199\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n
    \u9996\u5148\u76f4\u63a5\u4e0a\u4f20\u4e00\u4e2a\u6b63\u5e38\u7684\u56fe\u50cf\u6587\u4ef6\uff0c\uff08\u6211\u7528\u7684\u662fgif\uff0cgif\u5904\u7406\u524d\u540e\u7684\u76f8\u540c\u90e8\u5206\u8f83\u957f\uff0c\u6210\u529f\u7387\u8f83\u9ad8\uff09\u7136\u540e\u62ff\u5230\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u672c\u5730\u7684\u8be5\u56fe\u7247\uff0c\u4e24\u8005\u8fdb\u884c\u5bf9\u6bd4\uff0c\u89c2\u5bdf\u54ea\u4e9b\u90e8\u5206\u662f\u6ca1\u6709\u6539\u53d8\u7684\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u76f4\u63a5\u5728\u76f8\u540c\u7684\u90e8\u5206\u4e2d\u52a0\u63d2\u5165\u4e00\u53e5\u8bdd\u6728\u9a6c\uff1a<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u4e0a\u4f20\u6784\u9020\u540e\u7684111.gif\uff0c\u8681\u5251\u8fde\u63a5\u6210\u529f<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u4e0b\u8f7d\u4e0a\u4f20\u5230\u672c\u5730\u7684\u56fe\u7247\uff0c\u4e5f\u80fd\u53d1\u73b0\u5176\u4e2d\u7684\u6728\u9a6c\u5e76\u6ca1\u88ab\u8986\u76d6\u6389<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    pass 18  \u6761\u4ef6\u7ade\u4e89<\/h2>\n\n\n\n
    \u9996\u5148\u5206\u6790\u6e90\u7801\u3002\u53d1\u73b0\u6587\u4ef6\u662f\u628a\u539f\u59cb\u6587\u4ef6\u5148\u4fdd\u5b58\u5728\u672c\u5730\uff0c\u7136\u540e\u5bf9\u539f\u59cb\u6587\u4ef6\u540d\u540e\u7f00\u8fdb\u884c\u5224\u65ad\uff0c\u5982\u679c\u4e0d\u5728\u767d\u540d\u5355\u5185\u5219\u5220\u9664\uff0c\u5982\u679c\u5728\u7684\u8bdd\u7ed9\u6587\u4ef6\u8def\u5f84\u91cd\u547d\u540d\u3002\u6240\u4ee5\u5373\u4fbf\u4e0a\u4f20\u7684\u4e0d\u662f\u767d\u540d\u5355\uff0c\u603b\u4f1a\u5728\u670d\u52a1\u5668\u672c\u5730\u4fdd\u5b58\u4e00\u77ac\u7684\u65f6\u95f4\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u53ef\u4ee5\u8003\u8651\u6761\u4ef6\u7ade\u4e89\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u6240\u8c13\u6761\u4ef6\u7ade\u4e89\u5c31\u662f\u5728\u540e\u7aef\u4ee3\u7801\u8fd8\u6ca1\u6709\u5220\u9664\u6587\u4ef6\u524d\uff0c\u5361\u7740\u90a3\u4e00\u77ac\u7684\u65f6\u95f4\u53bb\u8bbf\u95ee\u4e0a\u4f20\u7684\u6728\u9a6c\u3002\u56e0\u4e3a\u5220\u9664\u7684\u53ea\u662f\u4e0a\u4f20\u7684\u6587\u4ef6\uff0c\u6240\u4ee5\u8fd9\u4e2a\u6728\u9a6c\u7684\u5185\u5bb9\u53ef\u4ee5\u662f\u5728\u5f53\u524d\u6587\u4ef6\u5939\u4e0b\u751f\u6210\u4e00\u4e2a\u4e00\u53e5\u8bdd\u6728\u9a6c\uff0c\u8fd9\u6837\u53ea\u8981\u8bbf\u95ee\u539f\u59cb\u6587\u4ef6\u6210\u529f\uff0c\u5373\u4fbf\u539f\u59cb\u6587\u4ef6\u88ab\u5220\u9664\uff0c\u751f\u6210\u7684\u6728\u9a6c\u4e5f\u4f1a\u4fdd\u7559\u3002\u6240\u4ee5\u6728\u9a6c\u6587\u4ef6\u53ef\u4ee5\u8fd9\u4e48\u5199\uff1a<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u7136\u540e\u7528burp\u7684intruder\u6a21\u5757\uff0c\u5148\u4e0d\u65ad\u5730\u53d1\u9001b.php\u6587\u4ef6\u4e0a\u4f20\u7684\u8bf7\u6c42\u5305\uff0c\u5728\u653b\u51fb\u7684\u8fc7\u7a0b\u4e2d\u4e0d\u65ad\u53d1\u9001\u8bbf\u95eeb.php\u7684\u8bf7\u6c42\u5305\uff1a<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u8fd9\u4e2a\u8ddf\u8fd0\u6c14\u6709\u5173\uff0c\u6709\u7684\u65f6\u5019\u8981\u591a\u8bd5\u51e0\u6b21<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    shell\u521b\u5efa\u6210\u529f\uff0c\u8681\u5251\u8fde\u63a5\u6210\u529f<\/p>\n\n\n\n
    pass19  apache\u89e3\u6790\u6f0f\u6d1e&\u6761\u4ef6\u7ade\u4e89<\/h2>\n\n\n\n
    \u9996\u5148\u5206\u6790\u6e90\u7801\u3002\u6e90\u7801\u5f88\u957f\uff0c\u9996\u5148\u4f1a\u5bf9\u540e\u7f00\u8fdb\u884c\u767d\u540d\u5355\u9a8c\u8bc1\u3002\u53d1\u73b0\u767d\u540d\u5355\u4e2d\u67097z\u3002apache\u89e3\u6790\u6587\u4ef6\u540d\u65f6\uff0c\u662f\u4ece\u53f3\u5f80\u5de6\u89e3\u6790\uff1b\u5047\u8bbe\u6211\u4e0a\u4f20\u7684\u662fa.php.7z\uff0capache\u662f\u89e3\u6790\u4e0d\u4e867z\u7684\uff0c\u7ee7\u7eed\u5f80\u5de6\u8bfb\uff0c\u89e3\u6790\u6210php\uff1b\u6240\u4ee57z\u53ef\u4ee5\u7ed5\u8fc7\u767d\u540d\u5355\uff0c\u5b58\u50a8\u5728\u672c\u5730\u4e0a\uff0c\u8bbf\u95ee\u7684\u65f6\u5019\u4ee5php\u6587\u4ef6\u89e3\u6790\u3002\u4f46\u662f\u540e\u9762\u7684\u4ee3\u7801\u5bf9\u5b58\u50a8\u5230\u672c\u5730\u7684\u6587\u4ef6\u91cd\u547d\u540d\uff0c\u8fd9\u65f6a.php.7z\u4f1a\u88ab\u91cd\u547d\u540d\u6210xxxx.7z\uff0c\u65e0\u6cd5\u89e3\u6790\u3002\u56e0\u6b64\uff0c\u8981\u8d76\u5728\u6587\u4ef6\u4e0a\u4f20\u540e\uff0c\u539f\u59cb\u6587\u4ef6\u540d\u88ab\u4fee\u6539\u524d\u90a3\u4e00\u77ac\u95f4\u7684\u65f6\u95f4\uff0c\u548c\u540e\u7aef\u4ee3\u7801\u7ade\u4e89\uff0c\u8bbf\u95eea.php.7z\uff0c\u8fbe\u5230\u79cd\u4e0b\u5c0f\u9a6c\u7684\u76ee\u7684\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u4f9d\u65e7\u662f\u6293\u4e00\u4e2a\u4e0a\u4f20\u6587\u4ef6\u7684\u5305\uff0c\u6293\u4e00\u4e2a\u8bbf\u95ee\u6587\u4ef6\u7684\u5305\uff0c\u4e22\u5230intruder\u5f00\u59cb\u7206\u7834<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    pass20  \u540e\u7f00\u7ed5\u8fc7<\/h2>\n\n\n\n
    \u9996\u5148\u770b\u6e90\u7801\u3002\u8fd9\u5173\u7684\u540e\u7aef\u5f88\u5bbd\u677e\uff0c\u6ca1\u6709\u5bf9\u540e\u7f00\u540d\u8fdb\u884c\u4efb\u4f55\u7684\u5904\u7406\uff08\u5982\u53bb\u7a7a\u683c\uff0c\u53bb.\uff09\uff0c\u56e0\u6b64\u968f\u4fbf\u5c1d\u8bd5\u4e00\u79cd\u540e\u7f00\u7ed5\u8fc7\u90fd\u53ef\u4ee5\u3002\u8fd9\u5173\u66f4\u50cf\u662f\u5bf9\u540e\u7f00\u7ed5\u8fc7\u7684\u603b\u7ed3\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    pass21  \u6570\u7ec4\u540e\u7f00\u7ed5\u8fc7 <\/h2>\n\n\n\n
    \u5206\u6790\u6e90\u7801\u3002\u9996\u5148\u5bf9content-type\u8fdb\u884c\u9a8c\u8bc1\uff0c\u56e0\u6b64\u8981\u6539\u4e00\u4e0b\u3002\u968f\u540e\u5b9a\u4e49\u4e00\u4e2a$file\u53d8\u91cf\uff0c\u5982\u679cpost\u4f20\u9012\u53c2\u6570save_name\u503c\u5b58\u5728\uff0c\u5219\u628asave_name\u4f20\u9012\u7ed9$file\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u628a\u539f\u59cb\u6587\u4ef6\u540d\u4f20\u9012\u7ed9$file\u3002<\/p>\n\n\n\n
    \u63a5\u4e0b\u6765\u5224\u65ad$file\u662f\u4e0d\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u5982\u679c\u4e0d\u662f\u7684\u8bdd\uff0c\u4ee5” . ” \u8fdb\u884c\u5206\u5272\u6210\u6570\u7ec4\uff0c\u8d4b\u503c\u7ed9$file\u3002<\/p>\n\n\n\n
    \u4e4b\u540e\u62ff\u5230$file\u6570\u7ec4\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u4f5c\u4e3a\u6587\u4ef6\u540e\u7f00\u540d\uff0c\u5224\u65ad\u662f\u5426\u5728\u767d\u540d\u5355\u5185\u3002\u5982\u679c\u5728\u7684\u8bdd\uff0c\u8ba1\u7b97\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u62ff\u5230\u6570\u7ec4\u5b9e\u9645\u6709\u6548\u5927\u5c0f-1\u7684\u4f4d\u7f6e\u7684\u503c\u4f5c\u4e3a\u6587\u4ef6\u540e\u7f00\u3002\u8fd9\u91cc\u5c31\u662f\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u3002\u524d\u9762\u7528\u6765\u5224\u65ad\u7684\u540e\u7f00\u662f\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u8fd9\u91cc\u4fdd\u5b58\u65f6\u7684\u540e\u7f00\u662f\u6570\u7ec4\u5b9e\u9645\u6709\u6548\u5927\u5c0f-1\u4f4d\u7f6e\u7684\u5143\u7d20\u3002<\/p>\n\n\n\n
    \u5047\u8bbe\u6211POST\u4e0a\u4f20\u7684\u662f\u4e00\u4e2a\u6570\u7ec4\uff0cfile[0]=1.php  file[2]=png    \u8fd9\u6837\u7684\u8bdd\u6570\u7ec4\u5b9e\u9645\u6709\u6548\u5927\u5c0f\u662f2\uff0c\u5224\u65ad\u767d\u540d\u5355\u65f6\u662f\u53d6\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u5373file[2]\uff0c\u80fd\u7ed5\u8fc7\uff1b\u5b58\u50a8\u65f6\u662f\u53d6\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20+\u2018.\u2019+file[1]\u3002file[0]\u4e3a\u7a7a\uff0c\u6240\u4ee5\u6700\u540e\u7684\u5b58\u50a8\u8def\u5f84\u5c31\u662f  a.php.   \u5b58\u50a8\u5728\u672c\u5730\u65f6windows\u81ea\u52a8\u622a\u65ad. \u6728\u9a6c\u5c31\u4e0a\u4f20\u6210\u529f\u4e86\u3002<\/p>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
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    \"\"<\/div><\/figure>\n\n\n\n
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