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41 lines
986 B
Python
41 lines
986 B
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2018 sqlmap developers (http://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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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.MYSQL))
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def tamper(payload, **kwargs):
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"""
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Replaces instances like 'CONCAT(A, B)' with 'CONCAT_WS(MID(CHAR(0), 0, 0), A, B)'
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Requirement:
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* MySQL
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Tested against:
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* MySQL 5.0
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Notes:
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* Useful to bypass very weak and bespoke web application firewalls
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that filter the CONCAT() function
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>>> tamper('CONCAT(1,2)')
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'CONCAT_WS(MID(CHAR(0),0,0),1,2)'
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"""
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if payload:
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payload = payload.replace("CONCAT(", "CONCAT_WS(MID(CHAR(0),0,0),")
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return payload
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