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www.waraxe.us Forum Index -> Sql injection -> Hey waraxe
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Hey waraxe
PostPosted: Thu Jul 09, 2009 11:32 am Reply with quote
cr4ps
Advanced user
Advanced user
Joined: May 06, 2009
Posts: 91




Hey waraxe, I need your help , a column specified "password_user" Im not abel to select it as it exists in table "utilisateurs" and I got the following message "Internet Explorer can not display the page Web " I select another column named "login_user" and I was able to display it but the "password_user" can't be selected . . .

Code:
8 and ascii(substring((SELECT login_user from utilisateurs where id_user=1 limit 0,1),1,1))>100


Code:
8 and ascii(substring((SELECT password_user from utilisateurs where id_user=1 limit 0,1),1,1))>100


Thanks in advanced . . .
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PostPosted: Thu Jul 09, 2009 12:08 pm Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




Turn off IE "Friendly Error Messages" so that you can see server real response. Even better, use Firefox with Live HTTP Headers Add-On or Wireshark and look for response code - 400, 500, 403, 200 ...
And try LENGTH() against that specific column to be sure, that it's not empty.
One more thing - possible collation problem, or pass column is blob type.
In this case try SUBSTR(HEX()) and retrieve info in hexadecimal representation.
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PostPosted: Thu Jul 09, 2009 12:34 pm Reply with quote
cr4ps
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Joined: May 06, 2009
Posts: 91




waraxe wrote:
Turn off IE "Friendly Error Messages" so that you can see server real response. Even better, use Firefox with Live HTTP Headers Add-On or Wireshark and look for response code - 400, 500, 403, 200 ...
And try LENGTH() against that specific column to be sure, that it's not empty.
One more thing - possible collation problem, or pass column is blob type.
In this case try SUBSTR(HEX()) and retrieve info in hexadecimal representation.


thank's waraxe, can you give me example SUBSTR(HEX()) plz Cool
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PostPosted: Sat Jul 11, 2009 10:06 am Reply with quote
cr4ps
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Joined: May 06, 2009
Posts: 91




its the same in both cases response 200

there were no other settlement ? Crying or Very sad
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PostPosted: Sat Jul 11, 2009 1:49 pm Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




You need to be more creative! Gather more information about specific column. Use information_schema.

information_schema.columns --> DATA_TYPE, CHARACTER_MAXIMUM_LENGTH

Then test for real data length and find out if it's >0.

And by the way, real world is not perfect ... I have seen lot's of unexplained anomalies in sql injection exploitation process ...
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