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43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2021 sqlmap developers (http://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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import os
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import re
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from lib.core.common import singleTimeWarnMessage
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from lib.core.convert import decodeHex
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from lib.core.convert import getOrds
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from lib.core.enums import DBMS
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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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singleTimeWarnMessage("tamper script '%s' is only meant to be run against %s" % (os.path.basename(__file__).split(".")[0], DBMS.SQLITE))
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def tamper(payload, **kwargs):
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"""
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Replaces each (SQLite) CAST(X'4142' AS TEXT) encoded string with equivalent CAST(CHAR(65) AS TEXT) || CAST(CHAR(66) AS TEXT) counterpart
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Requirement:
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* SQLite
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Tested against:
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* SQLite 3
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Notes:
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* Useful in cases when web application block single quotes or use addslashes()
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>>> tamper("SELECT CAST(X'4142' AS TEXT)")
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"SELECT CAST(CHAR(65) AS TEXT)||CAST(CHAR(66) AS TEXT)"
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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"CAST\(X'([0-9a-f]+)' AS TEXT\)", retVal):
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result = '||'.join("CAST(CHAR(%d) AS TEXT)" % _ for _ in getOrds(decodeHex(match.group(1))))
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retVal = retVal.replace(match.group(0), result)
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return retVal
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