sqlmap/lib/core/target.py
2013-03-26 16:04:56 +01:00

560 lines
21 KiB
Python

#!/usr/bin/env python
"""
Copyright (c) 2006-2013 sqlmap developers (http://sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""
import codecs
import functools
import os
import re
import tempfile
import time
import urlparse
from lib.core.common import Backend
from lib.core.common import hashDBRetrieve
from lib.core.common import intersect
from lib.core.common import paramToDict
from lib.core.common import readInput
from lib.core.common import resetCookieJar
from lib.core.common import urldecode
from lib.core.data import cmdLineOptions
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.data import paths
from lib.core.dicts import DBMS_DICT
from lib.core.dump import dumper
from lib.core.enums import HASHDB_KEYS
from lib.core.enums import HTTP_HEADER
from lib.core.enums import HTTPMETHOD
from lib.core.enums import PLACE
from lib.core.enums import POST_HINT
from lib.core.exception import SqlmapFilePathException
from lib.core.exception import SqlmapGenericException
from lib.core.exception import SqlmapMissingPrivileges
from lib.core.exception import SqlmapSyntaxException
from lib.core.exception import SqlmapUserQuitException
from lib.core.option import _setDBMS
from lib.core.option import _setKnowledgeBaseAttributes
from lib.core.option import _setAuthCred
from lib.core.settings import ASTERISK_MARKER
from lib.core.settings import CUSTOM_INJECTION_MARK_CHAR
from lib.core.settings import HOST_ALIASES
from lib.core.settings import JSON_RECOGNITION_REGEX
from lib.core.settings import MULTIPART_RECOGNITION_REGEX
from lib.core.settings import PROBLEMATIC_CUSTOM_INJECTION_PATTERNS
from lib.core.settings import REFERER_ALIASES
from lib.core.settings import RESULTS_FILE_FORMAT
from lib.core.settings import SOAP_RECOGNITION_REGEX
from lib.core.settings import SUPPORTED_DBMS
from lib.core.settings import UNENCODED_ORIGINAL_VALUE
from lib.core.settings import UNICODE_ENCODING
from lib.core.settings import UNKNOWN_DBMS_VERSION
from lib.core.settings import URI_INJECTABLE_REGEX
from lib.core.settings import USER_AGENT_ALIASES
from lib.utils.hashdb import HashDB
from lib.core.xmldump import dumper as xmldumper
from thirdparty.odict.odict import OrderedDict
def _setRequestParams():
"""
Check and set the parameters and perform checks on 'data' option for
HTTP method POST.
"""
if conf.direct:
conf.parameters[None] = "direct connection"
return
testableParameters = False
# Perform checks on GET parameters
if conf.parameters.get(PLACE.GET):
parameters = conf.parameters[PLACE.GET]
paramDict = paramToDict(PLACE.GET, parameters)
if paramDict:
conf.paramDict[PLACE.GET] = paramDict
testableParameters = True
# Perform checks on POST parameters
if conf.method == HTTPMETHOD.POST and conf.data is None:
errMsg = "HTTP POST method depends on HTTP data value to be posted"
raise SqlmapSyntaxException(errMsg)
if conf.data is not None:
conf.method = HTTPMETHOD.POST
def process(match, repl):
retVal = match.group(0)
if not (conf.testParameter and match.group("name") not in conf.testParameter):
retVal = repl
while True:
_ = re.search(r"\\g<([^>]+)>", retVal)
if _:
retVal = retVal.replace(_.group(0), match.group(int(_.group(1)) if _.group(1).isdigit() else _.group(1)))
else:
break
return retVal
if re.search(JSON_RECOGNITION_REGEX, conf.data):
message = "JSON like data found in POST data. "
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r'("(?P<name>[^"]+)"\s*:\s*"[^"]+)"', functools.partial(process, repl=r'\g<1>%s"' % CUSTOM_INJECTION_MARK_CHAR), conf.data)
conf.data = re.sub(r'("(?P<name>[^"]+)"\s*:\s*)(-?\d[\d\.]*\b)', functools.partial(process, repl=r'\g<0>%s' % CUSTOM_INJECTION_MARK_CHAR), conf.data)
kb.postHint = POST_HINT.JSON
elif re.search(SOAP_RECOGNITION_REGEX, conf.data):
message = "SOAP/XML like data found in POST data. "
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r"(<(?P<name>[^>]+)( [^<]*)?>)([^<]+)(</\2)", functools.partial(process, repl=r"\g<1>\g<4>%s\g<5>" % CUSTOM_INJECTION_MARK_CHAR), conf.data)
kb.postHint = POST_HINT.SOAP if "soap" in conf.data.lower() else POST_HINT.XML
elif re.search(MULTIPART_RECOGNITION_REGEX, conf.data):
message = "Multipart like data found in POST data. "
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r"(?si)(Content-Disposition.+?)((\r)?\n--)", r"\g<1>%s\g<2>" % CUSTOM_INJECTION_MARK_CHAR, conf.data)
kb.postHint = POST_HINT.MULTIPART
if not kb.postHint:
if CUSTOM_INJECTION_MARK_CHAR in conf.data: # later processed
pass
else:
place = PLACE.POST
conf.parameters[place] = conf.data
paramDict = paramToDict(place, conf.data)
if paramDict:
conf.paramDict[place] = paramDict
testableParameters = True
else:
if CUSTOM_INJECTION_MARK_CHAR not in conf.data: # in case that no usable parameter values has been found
conf.parameters[PLACE.POST] = conf.data
kb.processUserMarks = True if (kb.postHint and CUSTOM_INJECTION_MARK_CHAR in conf.data) else kb.processUserMarks
if re.search(URI_INJECTABLE_REGEX, conf.url, re.I) and not any(place in conf.parameters for place in (PLACE.GET, PLACE.POST)) and not kb.postHint:
warnMsg = "you've provided target url without any GET "
warnMsg += "parameters (e.g. www.site.com/article.php?id=1) "
warnMsg += "and without providing any POST parameters "
warnMsg += "through --data option"
logger.warn(warnMsg)
message = "do you want to try URI injections "
message += "in the target url itself? [Y/n/q] "
test = readInput(message, default="Y")
if not test or test[0] not in ("n", "N"):
conf.url = "%s%s" % (conf.url, CUSTOM_INJECTION_MARK_CHAR)
kb.processUserMarks = True
elif test[0] in ("q", "Q"):
raise SqlmapUserQuitException
for place, value in ((PLACE.URI, conf.url), (PLACE.CUSTOM_POST, conf.data), (PLACE.CUSTOM_HEADER, str(conf.httpHeaders))):
_ = re.sub(PROBLEMATIC_CUSTOM_INJECTION_PATTERNS, "", value or "") if place == PLACE.CUSTOM_HEADER else value or ""
if CUSTOM_INJECTION_MARK_CHAR in _:
if kb.processUserMarks is None:
lut = {PLACE.URI: '-u', PLACE.CUSTOM_POST: '--data', PLACE.CUSTOM_HEADER: '--headers/--user-agent/--referer/--cookie'}
message = "custom injection marking character ('%s') found in option " % CUSTOM_INJECTION_MARK_CHAR
message += "'%s'. Do you want to process it? [Y/n/q] " % lut[place]
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
else:
kb.processUserMarks = not test or test[0] not in ("n", "N")
if not kb.processUserMarks:
if place == PLACE.URI:
query = urlparse.urlsplit(value).query
if query:
parameters = conf.parameters[PLACE.GET] = query
paramDict = paramToDict(PLACE.GET, parameters)
if paramDict:
conf.url = conf.url.split('?')[0]
conf.paramDict[PLACE.GET] = paramDict
testableParameters = True
elif place == PLACE.CUSTOM_POST:
conf.parameters[PLACE.POST] = conf.data
paramDict = paramToDict(PLACE.POST, conf.data)
if paramDict:
conf.paramDict[PLACE.POST] = paramDict
testableParameters = True
else:
conf.parameters[place] = value
conf.paramDict[place] = OrderedDict()
if place == PLACE.CUSTOM_HEADER:
for index in xrange(len(conf.httpHeaders)):
header, value = conf.httpHeaders[index]
if CUSTOM_INJECTION_MARK_CHAR in re.sub(PROBLEMATIC_CUSTOM_INJECTION_PATTERNS, "", value):
parts = value.split(CUSTOM_INJECTION_MARK_CHAR)
for i in xrange(len(parts) - 1):
conf.paramDict[place]["%s #%d%s" % (header, i + 1, CUSTOM_INJECTION_MARK_CHAR)] = "%s,%s" % (header, "".join("%s%s" % (parts[j], CUSTOM_INJECTION_MARK_CHAR if i == j else "") for j in xrange(len(parts))))
conf.httpHeaders[index] = (header, value.replace(CUSTOM_INJECTION_MARK_CHAR, ""))
else:
parts = value.split(CUSTOM_INJECTION_MARK_CHAR)
for i in xrange(len(parts) - 1):
conf.paramDict[place]["%s#%d%s" % (("%s " % kb.postHint) if kb.postHint else "", i + 1, CUSTOM_INJECTION_MARK_CHAR)] = "".join("%s%s" % (parts[j], CUSTOM_INJECTION_MARK_CHAR if i == j else "") for j in xrange(len(parts)))
if place == PLACE.URI and PLACE.GET in conf.paramDict:
del conf.paramDict[PLACE.GET]
elif place == PLACE.CUSTOM_POST and PLACE.POST in conf.paramDict:
del conf.paramDict[PLACE.POST]
testableParameters = True
if kb.processUserMarks:
for item in ("url", "data", "agent", "referer", "cookie"):
if conf.get(item):
conf[item] = conf[item].replace(CUSTOM_INJECTION_MARK_CHAR, "")
# Perform checks on Cookie parameters
if conf.cookie:
conf.parameters[PLACE.COOKIE] = conf.cookie
paramDict = paramToDict(PLACE.COOKIE, conf.cookie)
if paramDict:
conf.paramDict[PLACE.COOKIE] = paramDict
testableParameters = True
# Perform checks on header values
if conf.httpHeaders:
for httpHeader, headerValue in conf.httpHeaders:
# Url encoding of the header values should be avoided
# Reference: http://stackoverflow.com/questions/5085904/is-ok-to-urlencode-the-value-in-headerlocation-value
httpHeader = httpHeader.title()
if httpHeader == HTTP_HEADER.USER_AGENT:
conf.parameters[PLACE.USER_AGENT] = urldecode(headerValue)
condition = any((not conf.testParameter, intersect(conf.testParameter, USER_AGENT_ALIASES)))
if condition:
conf.paramDict[PLACE.USER_AGENT] = {PLACE.USER_AGENT: headerValue}
testableParameters = True
elif httpHeader == HTTP_HEADER.REFERER:
conf.parameters[PLACE.REFERER] = urldecode(headerValue)
condition = any((not conf.testParameter, intersect(conf.testParameter, REFERER_ALIASES)))
if condition:
conf.paramDict[PLACE.REFERER] = {PLACE.REFERER: headerValue}
testableParameters = True
elif httpHeader == HTTP_HEADER.HOST:
conf.parameters[PLACE.HOST] = urldecode(headerValue)
condition = any((not conf.testParameter, intersect(conf.testParameter, HOST_ALIASES)))
if condition:
conf.paramDict[PLACE.HOST] = {PLACE.HOST: headerValue}
testableParameters = True
if not conf.parameters:
errMsg = "you did not provide any GET, POST and Cookie "
errMsg += "parameter, neither an User-Agent, Referer or Host header value"
raise SqlmapGenericException(errMsg)
elif not testableParameters:
errMsg = "all testable parameters you provided are not present "
errMsg += "within the given request data"
raise SqlmapGenericException(errMsg)
def _setHashDB():
"""
Check and set the HashDB SQLite file for query resume functionality.
"""
if not conf.hashDBFile:
conf.hashDBFile = conf.sessionFile or "%s%ssession.sqlite" % (conf.outputPath, os.sep)
if os.path.exists(conf.hashDBFile):
if conf.flushSession:
try:
os.remove(conf.hashDBFile)
logger.info("flushing session file")
except OSError, msg:
errMsg = "unable to flush the session file (%s)" % msg
raise SqlmapFilePathException(errMsg)
conf.hashDB = HashDB(conf.hashDBFile)
def _resumeHashDBValues():
"""
Resume stored data values from HashDB
"""
kb.absFilePaths = hashDBRetrieve(HASHDB_KEYS.KB_ABS_FILE_PATHS, True) or kb.absFilePaths
kb.chars = hashDBRetrieve(HASHDB_KEYS.KB_CHARS, True) or kb.chars
kb.dynamicMarkings = hashDBRetrieve(HASHDB_KEYS.KB_DYNAMIC_MARKINGS, True) or kb.dynamicMarkings
kb.brute.tables = hashDBRetrieve(HASHDB_KEYS.KB_BRUTE_TABLES, True) or kb.brute.tables
kb.brute.columns = hashDBRetrieve(HASHDB_KEYS.KB_BRUTE_COLUMNS, True) or kb.brute.columns
kb.xpCmdshellAvailable = hashDBRetrieve(HASHDB_KEYS.KB_XP_CMDSHELL_AVAILABLE) or kb.xpCmdshellAvailable
conf.tmpPath = conf.tmpPath or hashDBRetrieve(HASHDB_KEYS.CONF_TMP_PATH)
for injection in hashDBRetrieve(HASHDB_KEYS.KB_INJECTIONS, True) or []:
if injection.place in conf.paramDict and \
injection.parameter in conf.paramDict[injection.place]:
if not conf.tech or intersect(conf.tech, injection.data.keys()):
if intersect(conf.tech, injection.data.keys()):
injection.data = dict(filter(lambda (key, item): key in conf.tech, injection.data.items()))
if injection not in kb.injections:
kb.injections.append(injection)
_resumeDBMS()
_resumeOS()
def _resumeDBMS():
"""
Resume stored DBMS information from HashDB
"""
value = hashDBRetrieve(HASHDB_KEYS.DBMS)
if not value:
return
dbms = value.lower()
dbmsVersion = [UNKNOWN_DBMS_VERSION]
_ = "(%s)" % ("|".join([alias for alias in SUPPORTED_DBMS]))
_ = re.search("%s ([\d\.]+)" % _, dbms, re.I)
if _:
dbms = _.group(1).lower()
dbmsVersion = [_.group(2)]
if conf.dbms:
check = True
for aliases, _, _ in DBMS_DICT.values():
if conf.dbms.lower() in aliases and dbms not in aliases:
check = False
break
if not check:
message = "you provided '%s' as a back-end DBMS, " % conf.dbms
message += "but from a past scan information on the target URL "
message += "sqlmap assumes the back-end DBMS is '%s'. " % dbms
message += "Do you really want to force the back-end "
message += "DBMS value? [y/N] "
test = readInput(message, default="N")
if not test or test[0] in ("n", "N"):
conf.dbms = None
Backend.setDbms(dbms)
Backend.setVersionList(dbmsVersion)
else:
infoMsg = "resuming back-end DBMS '%s' " % dbms
logger.info(infoMsg)
Backend.setDbms(dbms)
Backend.setVersionList(dbmsVersion)
def _resumeOS():
"""
Resume stored OS information from HashDB
"""
value = hashDBRetrieve(HASHDB_KEYS.OS)
if not value:
return
os = value
if os and os != 'None':
infoMsg = "resuming back-end DBMS operating system '%s' " % os
logger.info(infoMsg)
if conf.os and conf.os.lower() != os.lower():
message = "you provided '%s' as back-end DBMS operating " % conf.os
message += "system, but from a past scan information on the "
message += "target URL sqlmap assumes the back-end DBMS "
message += "operating system is %s. " % os
message += "Do you really want to force the back-end DBMS "
message += "OS value? [y/N] "
test = readInput(message, default="N")
if not test or test[0] in ("n", "N"):
conf.os = os
else:
conf.os = os
Backend.setOs(conf.os)
def _setResultsFile():
"""
Create results file for storing results of running in a
multiple target mode.
"""
if not conf.multipleTargets:
return
if not conf.resultsFP:
conf.resultsFilename = "%s%s%s" % (paths.SQLMAP_OUTPUT_PATH, os.sep, time.strftime(RESULTS_FILE_FORMAT).lower())
conf.resultsFP = codecs.open(conf.resultsFilename, "w+", UNICODE_ENCODING, buffering=0)
conf.resultsFP.writelines("Target url,Place,Parameter,Techniques%s" % os.linesep)
logger.info("using '%s' as the CSV results file in multiple targets mode" % conf.resultsFilename)
def _createFilesDir():
"""
Create the file directory.
"""
if not conf.rFile:
return
conf.filePath = paths.SQLMAP_FILES_PATH % conf.hostname
if not os.path.isdir(conf.filePath):
os.makedirs(conf.filePath, 0755)
def _createDumpDir():
"""
Create the dump directory.
"""
if not conf.dumpTable and not conf.dumpAll and not conf.search:
return
conf.dumpPath = paths.SQLMAP_DUMP_PATH % conf.hostname
if not os.path.isdir(conf.dumpPath):
os.makedirs(conf.dumpPath, 0755)
def _configureDumper():
if hasattr(conf, 'xmlFile') and conf.xmlFile:
conf.dumper = xmldumper
else:
conf.dumper = dumper
conf.dumper.setOutputFile()
def _createTargetDirs():
"""
Create the output directory.
"""
if not os.path.isdir(paths.SQLMAP_OUTPUT_PATH):
try:
os.makedirs(paths.SQLMAP_OUTPUT_PATH, 0755)
except OSError, ex:
tempDir = tempfile.mkdtemp(prefix="sqlmapoutput")
warnMsg = "unable to create default root output directory "
warnMsg += "'%s' (%s). " % (paths.SQLMAP_OUTPUT_PATH, ex)
warnMsg += "using temporary directory '%s' instead" % tempDir
logger.warn(warnMsg)
paths.SQLMAP_OUTPUT_PATH = tempDir
conf.outputPath = "%s%s%s" % (paths.SQLMAP_OUTPUT_PATH, os.sep, conf.hostname)
if not os.path.isdir(conf.outputPath):
try:
os.makedirs(conf.outputPath, 0755)
except OSError, ex:
tempDir = tempfile.mkdtemp(prefix="sqlmapoutput")
warnMsg = "unable to create output directory "
warnMsg += "'%s' (%s). " % (conf.outputPath, ex)
warnMsg += "using temporary directory '%s' instead" % tempDir
logger.warn(warnMsg)
conf.outputPath = tempDir
try:
with codecs.open(os.path.join(conf.outputPath, "target.txt"), "w+", UNICODE_ENCODING) as f:
f.write(kb.originalUrls.get(conf.url) or conf.url or conf.hostname)
f.write(" (%s)" % (HTTPMETHOD.POST if conf.data else HTTPMETHOD.GET))
if conf.data:
f.write("\n\n%s" % conf.data)
except IOError, ex:
if "denied" in str(ex):
errMsg = "you don't have enough permissions "
else:
errMsg = "something went wrong while trying "
errMsg += "to write to the output directory '%s' (%s)" % (paths.SQLMAP_OUTPUT_PATH, ex)
raise SqlmapMissingPrivileges(errMsg)
_createDumpDir()
_createFilesDir()
_configureDumper()
def _restoreCmdLineOptions():
"""
Restore command line options that could be possibly
changed during the testing of previous target.
"""
conf.regexp = cmdLineOptions.regexp
conf.string = cmdLineOptions.string
conf.textOnly = cmdLineOptions.textOnly
def initTargetEnv():
"""
Initialize target environment.
"""
if conf.multipleTargets:
if conf.hashDB:
conf.hashDB.close()
if conf.cj:
resetCookieJar(conf.cj)
conf.paramDict = {}
conf.parameters = {}
conf.hashDBFile = None
_setKnowledgeBaseAttributes(False)
_restoreCmdLineOptions()
_setDBMS()
if conf.data:
class _(unicode):
pass
original = conf.data
conf.data = _(urldecode(conf.data))
setattr(conf.data, UNENCODED_ORIGINAL_VALUE, original)
kb.postSpaceToPlus = '+' in original
def setupTargetEnv():
_createTargetDirs()
_setRequestParams()
_setHashDB()
_resumeHashDBValues()
_setResultsFile()
_setAuthCred()