2013-01-25 13:27:57 +04:00
|
|
|
#!/usr/bin/env python
|
|
|
|
|
|
|
|
|
|
"""
|
|
|
|
|
Copyright (c) 2006-2013 sqlmap developers (http://sqlmap.org/)
|
|
|
|
|
See the file 'doc/COPYING' for copying permission
|
|
|
|
|
"""
|
|
|
|
|
|
|
|
|
|
import re
|
|
|
|
|
|
|
|
|
|
from lib.core.enums import PRIORITY
|
|
|
|
|
|
|
|
|
|
__priority__ = PRIORITY.HIGHEST
|
|
|
|
|
|
|
|
|
|
def dependencies():
|
|
|
|
|
pass
|
|
|
|
|
|
|
|
|
|
def tamper(payload, **kwargs):
|
|
|
|
|
"""
|
|
|
|
|
Replaces greater than operator ('>') with 'GREATEST' counterpart
|
|
|
|
|
|
|
|
|
|
Example:
|
|
|
|
|
* Input: 'A > B'
|
|
|
|
|
* Output: 'GREATEST(A, B + 1) = A'
|
|
|
|
|
|
|
|
|
|
Tested against:
|
|
|
|
|
* MySQL 4, 5.0 and 5.5
|
|
|
|
|
* Oracle 10g
|
|
|
|
|
* PostgreSQL 8.3, 8.4, 9.0
|
|
|
|
|
|
|
|
|
|
Notes:
|
|
|
|
|
* Useful to bypass weak and bespoke web application firewalls that
|
|
|
|
|
filter the greater than character
|
|
|
|
|
* The GREATEST clause is a widespread SQL command. Hence, this
|
|
|
|
|
tamper script should work against majority of databases
|
|
|
|
|
"""
|
|
|
|
|
|
|
|
|
|
retVal = payload
|
|
|
|
|
|
|
|
|
|
if payload:
|
2013-01-25 13:37:45 +04:00
|
|
|
match = re.search(r"(?i)(\b(AND|OR)\b\s+)(?!.*\b(AND|OR)\b)([^>]+?)\s*>\s*([^>]+)\s*\Z", payload)
|
2013-01-25 13:27:57 +04:00
|
|
|
|
|
|
|
|
if match:
|
|
|
|
|
_ = "%sGREATEST(%s,%s+1)=%s" % (match.group(1), match.group(4), match.group(5), match.group(4))
|
|
|
|
|
retVal = retVal.replace(match.group(0), _)
|
|
|
|
|
|
|
|
|
|
return retVal
|
