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58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
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#!/usr/bin/env python
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"""
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Copyright (c) 2006-2016 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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from lib.core.common import zeroDepthSearch
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from lib.core.enums import PRIORITY
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__priority__ = PRIORITY.HIGHEST
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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 plus ('+') character with function CONCAT()
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Tested against:
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* Microsoft SQL Server 2012
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Requirements:
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* Microsoft SQL Server 2012+
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Notes:
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* Useful in case ('+') character is filtered
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>>> tamper('SELECT CHAR(113)+CHAR(114)+CHAR(115) FROM DUAL')
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'SELECT CONCAT(CHAR(113),CHAR(114),CHAR(115)) FROM DUAL'
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"""
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retVal = payload
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if payload:
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while True:
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indexes = zeroDepthSearch(retVal, '+')
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if indexes:
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first, last = 0, 0
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for i in xrange(1, len(indexes)):
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if ' ' in retVal[indexes[0]:indexes[i]]:
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break
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else:
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last = i
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start = retVal[:indexes[first]].rfind(' ') + 1
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end = (retVal[indexes[last] + 1:].find(' ') + indexes[last] + 1) if ' ' in retVal[indexes[last] + 1:] else len(retVal) - 1
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chars = [char for char in retVal]
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for index in indexes[first:last + 1]:
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chars[index] = ','
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retVal = "%sCONCAT(%s)%s" % (retVal[:start], ''.join(chars)[start:end], retVal[end:])
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else:
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break
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return retVal
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