sqlmap/tamper/uppercase.py

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#!/usr/bin/env python
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"""
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Copyright (c) 2006-2024 sqlmap developers (https://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
import re
from lib.core.data import kb
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.NORMAL
def dependencies():
pass
def tamper(payload, **kwargs):
"""
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Replaces each keyword character with upper case value (e.g. select -> SELECT)
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Tested against:
* Microsoft SQL Server 2005
* MySQL 4, 5.0 and 5.5
* Oracle 10g
* PostgreSQL 8.3, 8.4, 9.0
Notes:
* Useful to bypass very weak and bespoke web application firewalls
that has poorly written permissive regular expressions
* This tamper script should work against all (?) databases
>>> tamper('insert')
'INSERT'
"""
retVal = payload
if payload:
for match in re.finditer(r"[A-Za-z_]+", retVal):
word = match.group()
if word.upper() in kb.keywords:
retVal = retVal.replace(word, word.upper())
return retVal