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63 lines
1.6 KiB
Python
63 lines
1.6 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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from lib.core.compat import xrange
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from lib.core.enums import PRIORITY
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__priority__ = PRIORITY.LOW
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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 (MySQL) instances of space character (' ') with comments '/**_**/'
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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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* PostgreSQL 16.11
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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
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* Despite the script's name, '/**_**/' is a valid comment on every engine
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listed above, not just MySQL
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>>> tamper('SELECT id FROM users')
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'SELECT/**_**/id/**_**/FROM/**_**/users'
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"""
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retVal = payload
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if payload:
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retVal = ""
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quote, doublequote, firstspace = False, False, False
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for i in xrange(len(payload)):
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if not firstspace:
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if payload[i].isspace():
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firstspace = True
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retVal += "/**_**/"
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continue
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elif payload[i] == '\'' and (i == 0 or payload[i - 1] != '\\'):
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quote = not quote
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elif payload[i] == '"' and (i == 0 or payload[i - 1] != '\\'):
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doublequote = not doublequote
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elif payload[i] == " " and not doublequote and not quote:
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retVal += "/**_**/"
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continue
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retVal += payload[i]
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return retVal
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