Update for an Issue #806

tamper/overlongutf8more.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+
+"""
+Copyright (c) 2006-2018 sqlmap developers (http://sqlmap.org/)
+See the file 'LICENSE' for copying permission
+"""
+
+import string
+
+from lib.core.enums import PRIORITY
+
+__priority__ = PRIORITY.LOWEST
+
+def dependencies():
+    pass
+
+def tamper(payload, **kwargs):
+    """
+    Converts all characters in a given payload (not processing already encoded)
+
+    Reference: https://www.acunetix.com/vulnerabilities/unicode-transformation-issues/
+    Reference: https://www.thecodingforums.com/threads/newbie-question-about-character-encoding-what-does-0xc0-0x8a-have-in-common-with-0xe0-0x80-0x8a.170201/
+
+    >>> tamper('SELECT FIELD FROM TABLE WHERE 2>1')
+    '%C1%93%C1%85%C1%8C%C1%85%C1%83%C1%94%C0%A0%C1%86%C1%89%C1%85%C1%8C%C1%84%C0%A0%C1%86%C1%92%C1%8F%C1%8D%C0%A0%C1%94%C1%81%C1%82%C1%8C%C1%85%C0%A0%C1%97%C1%88%C1%85%C1%92%C1%85%C0%A0%C0%B2%C0%BE%C0%B1'
+    """
+
+    retVal = payload
+
+    if payload:
+        retVal = ""
+        i = 0
+
+        while i < len(payload):
+            if payload[i] == '%' and (i < len(payload) - 2) and payload[i + 1:i + 2] in string.hexdigits and payload[i + 2:i + 3] in string.hexdigits:
+                retVal += payload[i:i + 3]
+                i += 3
+            else:
+                retVal += "%%%.2X%%%.2X" % (0xc0 + (ord(payload[i]) >> 6), 0x80 + (ord(payload[i]) & 0x3f))
+                i += 1
+
+    return retVal