SQL Injection and text fields

[Mariano Nuñez Di Croce <mnunez () cybsec com>]

I'm currently pen-testing a web application based on ASP and SQL Server.

I have already figured out the table and field name by the use of the 
"having 1=1--" and appending "group by table.name" clauses.

The problem is that I have text fields and those can't be use in the 
GROUP BY clause, so I get an error and cannot continue with the Injection.

Any ideas?

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Mariano Nuñez Di Croce

CYBSEC S.A. Security Systems
Email: mnunez () cybsec com
Tel/Fax: (54-11) 4382-1600
Web: http://www.cybsec.com
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