Adding some tamper scripts

tamper/dunion.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+"""
+Copyright (c) 2006-2020 sqlmap developers (http://sqlmap.org/)
+See the file 'LICENSE' for copying permission
+"""
+
+import re
+
+from lib.core.enums import PRIORITY
+
+__priority__ = PRIORITY.HIGHEST
+
+def dependencies():
+    pass
+
+def tamper(payload, **kwargs):
+    """
+    Replaces instances of <int> UNION with <int>DUNION
+
+    Requirement:
+        * Oracle
+
+    Notes:
+        * Reference: https://media.blackhat.com/us-13/US-13-Salgado-SQLi-Optimization-and-Obfuscation-Techniques-Slides.pdf
+
+    >>> tamper('1 UNION ALL SELECT')
+    '1DUNION ALL SELECT'
+    """
+
+    return re.sub("(\d+)\s+(UNION )", r"\g<1>D\g<2>", payload, re.I) if payload else payload