adding new tamper script

tamper/multiplespaces.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+"""
+$Id$
+
+Copyright (c) 2006-2011 sqlmap developers (http://sqlmap.sourceforge.net/)
+See the file 'doc/COPYING' for copying permission
+"""
+
+import random
+import re
+
+from lib.core.common import randomRange
+from lib.core.data import kb
+from lib.core.enums import PRIORITY
+
+__priority__ = PRIORITY.NORMAL
+
+def tamper(payload):
+    """
+    Adding multiple spaces around SQL keywords
+    Example: 'UNION SELECT' migth become '  UNION   SELECT  '
+    Reference: https://www.owasp.org/images/7/74/Advanced_SQL_Injection.ppt
+    """
+
+    retVal = payload
+
+    if payload:
+        words = set()
+
+        for match in re.finditer(r"[A-Za-z_]+", payload):
+            word = match.group()
+
+            if word.upper() in kb.keywords:
+                words.add(word)
+
+        for word in words:
+            retVal = re.sub("(?<=\W)%s(?=[^A-Za-z_(]|\Z)" % word, "%s%s%s" % (' '*random.randrange(1,4), word, ' '*random.randrange(1,4)), retVal)
+            retVal = re.sub("(?<=\W)%s(?=[(])" % word, "%s%s" % (' '*random.randrange(1,4), word), retVal)
+
+    return retVal