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One method for discovering the correct amount of columns to SELECT in a SQL injection is to keep adding NULL until the error disappears. Check it out! 👇

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Web Security Academy

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28,193 просмотров • 4 месяцев назад •via X (Twitter)

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NimaAshrafi4 месяцев назад

Another quick method is using ORDER BY until the error appears, then you can infer the column count without relying only on NULLs

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SQL injection! 💉 After finding the number of columns using the NULL trick, you can take it a step further and identify which column takes which data type. Swap 'abc' into one position at a time. The one that comes back without an error is your string column, and that's where your data goes. Want to practice this technique? Hack our FREE labs! 👇
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