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54 lines
1.2 KiB
Python
54 lines
1.2 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2012 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.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 dependencies():
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pass
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def tamper(payload, **kwargs):
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"""
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Replaces each keyword character with random case value
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Example:
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* Input: INSERT
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* Output: InsERt
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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 very weak and bespoke web application firewalls
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that has poorly written permissive regular expressions
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* This tamper script should work against all (?) databases
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"""
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retVal = payload
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if payload:
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for match in re.finditer(r"[A-Za-z_]+", retVal):
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word = match.group()
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if word.upper() in kb.keywords:
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_ = str()
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for i in xrange(len(word)):
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_ += word[i].upper() if randomRange(0, 1) else word[i].lower()
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retVal = retVal.replace(word, _)
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return retVal
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