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50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2022 sqlmap developers (https://sqlmap.org/)
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See the file 'LICENSE' 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, **kwargs):
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"""
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URL-encodes all characters in a given payload (not processing already encoded) (e.g. SELECT -> %53%45%4C%45%43%54)
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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 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, hence it should work against any DBMS
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>>> tamper('SELECT FIELD FROM%20TABLE')
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'%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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"""
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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 += '%%%.2X' % ord(payload[i])
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i += 1
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return retVal
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