mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-22 17:46:37 +03:00
90 lines
2.8 KiB
Python
90 lines
2.8 KiB
Python
#!/usr/bin/env python
|
|
|
|
"""
|
|
Copyright (c) 2006-2017 sqlmap developers (http://sqlmap.org/)
|
|
See the file 'doc/COPYING' for copying permission
|
|
"""
|
|
|
|
import re
|
|
|
|
from lib.core.common import zeroDepthSearch
|
|
from lib.core.enums import PRIORITY
|
|
|
|
__priority__ = PRIORITY.HIGHEST
|
|
|
|
def dependencies():
|
|
pass
|
|
|
|
def tamper(payload, **kwargs):
|
|
"""
|
|
Replaces plus ('+') character with ODBC function {fn CONCAT()}
|
|
|
|
Tested against:
|
|
* Microsoft SQL Server 2008
|
|
|
|
Requirements:
|
|
* Microsoft SQL Server 2008+
|
|
|
|
Notes:
|
|
* Useful in case ('+') character is filtered
|
|
* https://msdn.microsoft.com/en-us/library/bb630290.aspx
|
|
|
|
>>> tamper('SELECT CHAR(113)+CHAR(114)+CHAR(115) FROM DUAL')
|
|
'SELECT {fn CONCAT({fn CONCAT(CHAR(113),CHAR(114))},CHAR(115))} FROM DUAL'
|
|
|
|
>>> tamper('SELECT (CHAR(113)+CHAR(114)+CHAR(115)) FROM DUAL')
|
|
'SELECT {fn CONCAT({fn CONCAT(CHAR(113),CHAR(114))},CHAR(115))} FROM DUAL'
|
|
"""
|
|
|
|
retVal = payload
|
|
|
|
if payload:
|
|
while True:
|
|
indexes = zeroDepthSearch(retVal, '+')
|
|
|
|
if indexes:
|
|
first, last = 0, 0
|
|
for i in xrange(1, len(indexes)):
|
|
if ' ' in retVal[indexes[0]:indexes[i]]:
|
|
break
|
|
else:
|
|
last = i
|
|
|
|
start = retVal[:indexes[first]].rfind(' ') + 1
|
|
end = (retVal[indexes[last] + 1:].find(' ') + indexes[last] + 1) if ' ' in retVal[indexes[last] + 1:] else len(retVal) - 1
|
|
|
|
count = 0
|
|
chars = [char for char in retVal]
|
|
for index in indexes[first:last + 1]:
|
|
if count == 0:
|
|
chars[index] = ','
|
|
else:
|
|
chars[index] = '\x01'
|
|
count += 1
|
|
|
|
retVal = "%s%s%s)}%s" % (retVal[:start], "{fn CONCAT(" * count, ''.join(chars)[start:end].replace('\x01', ")},"), retVal[end:])
|
|
else:
|
|
match = re.search(r"\((CHAR\(\d+.+CHAR\(\d+\))\)", retVal)
|
|
if match:
|
|
part = match.group(0)
|
|
indexes = set(zeroDepthSearch(match.group(1), '+'))
|
|
if not indexes:
|
|
break
|
|
|
|
count = 0
|
|
chars = [char for char in part]
|
|
for i in xrange(1, len(chars)):
|
|
if i - 1 in indexes:
|
|
if count == 0:
|
|
chars[i] = ','
|
|
else:
|
|
chars[i] = '\x01'
|
|
count += 1
|
|
|
|
replacement = "%s%s}" % (("{fn CONCAT(" * count)[:-1], "".join(chars).replace('\x01', ")},"))
|
|
retVal = retVal.replace(part, replacement)
|
|
else:
|
|
break
|
|
|
|
return retVal
|