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42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
#!/usr/bin/env python
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"""
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$Id$
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Copyright (c) 2006-2011 sqlmap developers (http://sqlmap.sourceforge.net/)
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See the file 'doc/COPYING' for copying permission
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"""
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import random
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import re
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from lib.core.common import randomRange
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from lib.core.data import kb
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from lib.core.enums import PRIORITY
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__priority__ = PRIORITY.NORMAL
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def tamper(payload):
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"""
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Adding multiple spaces around SQL keywords
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Example: 'UNION SELECT' migth become ' UNION SELECT '
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Reference: https://www.owasp.org/images/7/74/Advanced_SQL_Injection.ppt
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"""
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retVal = payload
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if payload:
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words = set()
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for match in re.finditer(r"[A-Za-z_]+", payload):
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word = match.group()
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if word.upper() in kb.keywords:
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words.add(word)
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for word in words:
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retVal = re.sub("(?<=\W)%s(?=[^A-Za-z_(]|\Z)" % word, "%s%s%s" % (' '*random.randrange(1,4), word, ' '*random.randrange(1,4)), retVal)
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retVal = re.sub("(?<=\W)%s(?=[(])" % word, "%s%s" % (' '*random.randrange(1,4), word), retVal)
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return retVal
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