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56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
#!/usr/bin/env python
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"""
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$Id$
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Copyright (c) 2006-2012 sqlmap developers (http://www.sqlmap.org/)
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See the file 'doc/COPYING' for copying permission
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"""
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import string
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from lib.core.enums import PRIORITY
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__priority__ = PRIORITY.LOWEST
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def dependencies():
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pass
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def tamper(payload):
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"""
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Url-encodes all characters in a given payload (not processing already
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encoded)
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Example:
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* Input: SELECT FIELD FROM%20TABLE
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* Output: %53%45%4c%45%43%54%20%46%49%45%4c%44%20%46%52%4f%4d%20%54%41%42%4c%45
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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 web application firewalls that do not
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url-decode the request before processing it through their ruleset
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* The web server will anyway pass the url-decoded version behind,
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hence it should work against any DBMS
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"""
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retVal = payload
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if payload:
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retVal = ""
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i = 0
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while i < len(payload):
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if payload[i] == '%' and (i < len(payload) - 2) and payload[i+1:i+2] in string.hexdigits and payload[i+2:i+3] in string.hexdigits:
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retVal += payload[i:i+3]
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i += 3
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else:
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retVal += '%%%X' % ord(payload[i])
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i += 1
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return retVal
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