-
-
Notifications
You must be signed in to change notification settings - Fork 6.3k
Expand file tree
/
Copy pathcharunicodeencode.py
More file actions
63 lines (49 loc) · 2.09 KB
/
Copy pathcharunicodeencode.py
File metadata and controls
63 lines (49 loc) · 2.09 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
#!/usr/bin/env python
"""
Copyright (c) 2006-2026 sqlmap developers (https://sqlmap.org)
See the file 'LICENSE' for copying permission
"""
import os
import string
from lib.core.common import singleTimeWarnMessage
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.LOWEST
def dependencies():
singleTimeWarnMessage("tamper script '%s' is only meant to be run against ASP or ASP.NET web applications" % os.path.basename(__file__).split(".")[0])
def tamper(payload, **kwargs):
"""
Unicode-URL-encodes all characters in a given payload (not processing already encoded) (e.g. SELECT -> %u0053%u0045%u004C%u0045%u0043%u0054)
Requirement:
* ASP
* ASP.NET
Tested against:
* Microsoft SQL Server 2000
* Microsoft SQL Server 2005
* MySQL 5.1.56
* PostgreSQL 9.0.3
Notes:
* Useful to bypass weak web application firewalls that do not unicode URL-decode the request before processing it through their ruleset
>>> tamper('SELECT FIELD%20FROM TABLE')
'%u0053%u0045%u004C%u0045%u0043%u0054%u0020%u0046%u0049%u0045%u004C%u0044%u0020%u0046%u0052%u004F%u004D%u0020%u0054%u0041%u0042%u004C%u0045'
>>> tamper(u'\U0001F600') == '%uD83D%uDE00'
True
"""
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 += "%%u00%s" % payload[i + 1:i + 3]
i += 3
else:
ordinal = ord(payload[i])
if ordinal > 0xFFFF:
# Note: %uXXXX is UTF-16 based, so a non-BMP char (e.g. an emoji) must be emitted
# as a surrogate pair - '%.4X' alone would produce an invalid 5-digit '%uXXXXX'
ordinal -= 0x10000
retVal += "%%u%04X%%u%04X" % (0xD800 + (ordinal >> 10), 0xDC00 + (ordinal & 0x3FF))
else:
retVal += '%%u%.4X' % ordinal
i += 1
return retVal