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53 lines
1.3 KiB
Python
53 lines
1.3 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2026 sqlmap developers (https://sqlmap.org)
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See the file 'LICENSE' for copying permission
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"""
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import re
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from lib.core.enums import PRIORITY
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__priority__ = PRIORITY.HIGHEST
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def dependencies():
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pass
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def tamper(payload, **kwargs):
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"""
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Replaces all occurrences of operator equal ('=') with 'LIKE' counterpart
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Requirement:
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* MySQL
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* MariaDB
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* SQLite
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* Microsoft SQL Server
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* Oracle
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Tested against:
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* MySQL 8.4.9
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* MariaDB 11.8.8
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* SQLite 3.45.1
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* Microsoft SQL Server 2022
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* Oracle 23ai
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Notes:
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* Useful to bypass weak and bespoke web application firewalls that
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filter the equal character ('=')
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* NOT usable against PostgreSQL, which refuses to compare a numeric
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operand with LIKE (e.g. '1 LIKE 1' raises 'operator does not exist:
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integer ~~ integer'), unlike the engines listed above which coerce
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the operands to text
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>>> tamper('SELECT * FROM users WHERE id=1')
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'SELECT * FROM users WHERE id LIKE 1'
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"""
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retVal = payload
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if payload:
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retVal = re.sub(r"\s*(?<![<>!=])=(?!=)\s*", " LIKE ", retVal) # Note: skipping compound operators (e.g. >=, <=, !=)
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return retVal
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