#!/usr/bin/env python
"""
$Id$
Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
See the file 'doc/COPYING' for copying permission
"""
import re
import socket
import time
from difflib import SequenceMatcher
from lib.core.agent import agent
from lib.core.common import beep
from lib.core.common import calculateDeltaSeconds
from lib.core.common import extractRegexResult
from lib.core.common import getUnicode
from lib.core.common import popValue
from lib.core.common import pushValue
from lib.core.common import randomInt
from lib.core.common import randomStr
from lib.core.common import readInput
from lib.core.common import removeDynamicContent
from lib.core.common import showStaticWords
from lib.core.common import trimAlphaNum
from lib.core.common import wasLastRequestDBMSError
from lib.core.common import DynamicContentItem
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.datatype import advancedDict
from lib.core.datatype import injectionDict
from lib.core.enums import HTTPMETHOD
from lib.core.enums import NULLCONNECTION
from lib.core.enums import PAYLOAD
from lib.core.enums import PLACE
from lib.core.exception import sqlmapConnectionException
from lib.core.exception import sqlmapGenericException
from lib.core.exception import sqlmapNoneDataException
from lib.core.exception import sqlmapSiteTooDynamic
from lib.core.exception import sqlmapUserQuitException
from lib.core.session import setString
from lib.core.session import setRegexp
from lib.request.connect import Connect as Request
from lib.request.templates import getPageTemplate
from plugins.dbms.firebird.syntax import Syntax as Firebird
from plugins.dbms.postgresql.syntax import Syntax as PostgreSQL
from plugins.dbms.mssqlserver.syntax import Syntax as MSSQLServer
from plugins.dbms.oracle.syntax import Syntax as Oracle
from plugins.dbms.mysql.syntax import Syntax as MySQL
from plugins.dbms.access.syntax import Syntax as Access
from plugins.dbms.sybase.syntax import Syntax as Sybase
from plugins.dbms.sqlite.syntax import Syntax as SQLite
from plugins.dbms.maxdb.syntax import Syntax as MaxDB
def unescape(string, dbms):
unescaper = {
"Access": Access.unescape,
"Firebird": Firebird.unescape,
"MaxDB": MaxDB.unescape,
"Microsoft SQL Server": MSSQLServer.unescape,
"MySQL": MySQL.unescape,
"Oracle": Oracle.unescape,
"PostgreSQL": PostgreSQL.unescape,
"SQLite": SQLite.unescape,
"Sybase": Sybase.unescape
}
if dbms in unescaper:
return unescaper[dbms](string)
else:
return string
def unescapeDbms(payload, injection, dbms):
# If this is a DBMS-specific test (dbms), sqlmap identified the
# DBMS during previous a test (injection.dbms) or the user
# provided a DBMS (conf.dbms), unescape the strings between single
# quotes in the payload
if injection.dbms is not None:
payload = unescape(payload, injection.dbms)
elif dbms is not None:
payload = unescape(payload, dbms)
elif conf.dbms is not None:
payload = unescape(payload, conf.dbms)
return payload
def checkSqlInjection(place, parameter, value):
# Store here the details about boundaries and payload used to
# successfully inject
injection = injectionDict()
# Clear cookies after each query page attempt
kb.testMode = True
for test in conf.tests:
title = test.title
stype = test.stype
clause = test.clause
# Skip test if the risk is higher than the provided (or default)
# value
# Parse test's <risk>
if test.risk > conf.risk:
debugMsg = "skipping test '%s' because the risk " % title
debugMsg += "is higher than the provided"
logger.debug(debugMsg)
continue
# Skip test if the level is higher than the provided (or default)
# value
# Parse test's <level>
if test.level > conf.level:
debugMsg = "skipping test '%s' because the level " % title
debugMsg += "is higher than the provided"
logger.debug(debugMsg)
continue
# Skip DBMS-specific test if it does not match either the
# previously identified or the user's provided DBMS
if "details" in test and "dbms" in test.details:
dbms = test.details.dbms
else:
dbms = None
if dbms is not None:
if injection.dbms is not None and injection.dbms != dbms:
debugMsg = "skipping test '%s' because " % title
debugMsg += "the back-end DBMS identified is "
debugMsg += "%s" % injection.dbms
logger.debug(debugMsg)
continue
if conf.dbms is not None and conf.dbms.lower() != dbms.lower():
debugMsg = "skipping test '%s' because " % title
debugMsg += "the provided DBMS is %s" % conf.dbms
logger.debug(debugMsg)
continue
# Skip test if it is the same SQL injection type already
# identified by another test
if injection.data and stype in injection.data:
debugMsg = "skipping test '%s' because " % title
debugMsg += "the payload for %s has " % PAYLOAD.SQLINJECTION[stype]
debugMsg += "already been identified"
logger.debug(debugMsg)
continue
# Skip test if it does not match the same SQL injection clause
# already identified by another test
clauseMatch = False
for clauseTest in clause:
if injection.clause is not None and clauseTest in injection.clause:
clauseMatch = True
break
if clause != [ 0 ] and injection.clause and not clauseMatch:
debugMsg = "skipping test '%s' because the clauses " % title
debugMsg += "differs from the clause already identified"
logger.debug(debugMsg)
continue
infoMsg = "testing '%s'" % title
logger.info(infoMsg)
# Parse test's <request>
comment = agent.getComment(test.request)
fstPayload = agent.cleanupPayload(test.request.payload, value)
fstPayload = unescapeDbms(fstPayload, injection, dbms)
fstPayload = "%s%s" % (fstPayload, comment)
if stype != 4 and clause != [2, 3] and clause != [ 3 ]:
space = " "
else:
space = ""
if conf.prefix is not None and conf.suffix is not None:
# Create a custom boundary object for user's supplied prefix
# and suffix
boundary = advancedDict()
boundary.level = 1
boundary.clause = [ 0 ]
boundary.where = [ 1, 2, 3 ]
boundary.prefix = conf.prefix
boundary.suffix = conf.suffix
if " like" in boundary.suffix.lower():
if "'" in boundary.suffix.lower():
boundary.ptype = 3
elif '"' in boundary.suffix.lower():
boundary.ptype = 5
elif "'" in boundary.suffix:
boundary.ptype = 2
elif '"' in boundary.suffix:
boundary.ptype = 4
else:
boundary.ptype = 1
# Prepend user's provided boundaries to all others boundaries
conf.boundaries.insert(0, boundary)
for boundary in conf.boundaries:
injectable = False
# Skip boundary if the level is higher than the provided (or
# default) value
# Parse boundary's <level>
if boundary.level > conf.level:
# NOTE: shall we report every single skipped boundary too?
continue
# Skip boundary if it does not match against test's <clause>
# Parse test's <clause> and boundary's <clause>
clauseMatch = False
for clauseTest in test.clause:
if clauseTest in boundary.clause:
clauseMatch = True
break
if test.clause != [ 0 ] and boundary.clause != [ 0 ] and not clauseMatch:
continue
# Skip boundary if it does not match against test's <where>
# Parse test's <where> and boundary's <where>
whereMatch = False
for where in test.where:
if where in boundary.where:
whereMatch = True
break
if not whereMatch:
continue
# Parse boundary's <prefix>, <suffix> and <ptype>
prefix = boundary.prefix if boundary.prefix else ""
suffix = boundary.suffix if boundary.suffix else ""
ptype = boundary.ptype
# If the previous injections succeeded, we know which prefix,
# suffix and parameter type to use for further tests, no
# need to cycle through the boundaries for the following tests
condBound = (injection.prefix is not None and injection.suffix is not None)
condBound &= (injection.prefix != prefix or injection.suffix != suffix)
condType = injection.ptype is not None and injection.ptype != ptype
if condBound or condType:
continue
# For each test's <where>
for where in test.where:
templatePayload = None
# Threat the parameter original value according to the
# test's <where> tag
if where == 1:
origValue = value
elif where == 2:
origValue = "-%s" % randomInt()
# Use different page template than the original one
# as we are changing parameters value, which will result
# most definitely with a different content
templatePayload = agent.payload(place, parameter, value, origValue)
elif where == 3:
origValue = ""
kb.pageTemplate = getPageTemplate(templatePayload, place)
# Forge request payload by prepending with boundary's
# prefix and appending the boundary's suffix to the
# test's ' <payload><comment> ' string
boundPayload = "%s%s%s%s %s" % (origValue, prefix, space, fstPayload, suffix)
boundPayload = boundPayload.strip()
boundPayload = agent.cleanupPayload(boundPayload, value)
reqPayload = agent.payload(place, parameter, value, boundPayload)
# Perform the test's request and check whether or not the
# payload was successful
# Parse test's <response>
for method, check in test.response.items():
check = agent.cleanupPayload(check, value)
# In case of boolean-based blind SQL injection
if method == PAYLOAD.METHOD.COMPARISON:
sndPayload = agent.cleanupPayload(test.response.comparison, value)
sndPayload = unescapeDbms(sndPayload, injection, dbms)
sndPayload = "%s%s" % (sndPayload, comment)
# Forge response payload by prepending with
# boundary's prefix and appending the boundary's
# suffix to the test's ' <payload><comment> '
# string
boundPayload = "%s%s%s%s %s" % (origValue, prefix, space, sndPayload, suffix)
boundPayload = boundPayload.strip()
boundPayload = agent.cleanupPayload(boundPayload, value)
cmpPayload = agent.payload(place, parameter, value, boundPayload)
# Useful to set conf.matchRatio at first based on
# the False response content
conf.matchRatio = None
_ = Request.queryPage(cmpPayload, place)
# Compare True and False response contents
trueResult = Request.queryPage(reqPayload, place)
if trueResult:
falseResult = Request.queryPage(cmpPayload, place)
if not falseResult:
infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)
logger.info(infoMsg)
kb.paramMatchRatio[(place, parameter)] = conf.matchRatio
injectable = True
# In case of error-based or UNION query SQL injections
elif method == PAYLOAD.METHOD.GREP:
# Perform the test's request and grep the response
# body for the test's <grep> regular expression
reqBody, _ = Request.queryPage(reqPayload, place, content=True)
output = extractRegexResult(check, reqBody, re.DOTALL | re.IGNORECASE)
if output:
result = output.replace(kb.misc.space, " ") == "1"
if result:
infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)
logger.info(infoMsg)
injectable = True
# In case of time-based blind or stacked queries
# SQL injections
elif method == PAYLOAD.METHOD.TIME:
# Store old value of socket timeout
pushValue(socket.getdefaulttimeout())
# Set socket timeout to 2 minutes as some
# time based checks can take awhile
socket.setdefaulttimeout(120)
# Perform the test's request
trueResult = Request.queryPage(reqPayload, place, timeBasedCompare=True)
if trueResult:
infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)
logger.info(infoMsg)
injectable = True
# Restore value of socket timeout
socket.setdefaulttimeout(popValue())
# If the injection test was successful feed the injection
# object with the test's details
if injectable is True:
# Feed with the boundaries details only the first time a
# test has been successful
if injection.place is None or injection.parameter is None:
if place == PLACE.UA:
injection.parameter = conf.agent
else:
injection.parameter = parameter
injection.place = place
injection.ptype = ptype
injection.prefix = prefix
injection.suffix = suffix
injection.clause = clause
if "vector" in test and test.vector is not None:
vector = "%s%s" % (test.vector, comment)
else:
vector = None
# Feed with test details every time a test is successful
injection.data[stype] = advancedDict()
injection.data[stype].title = title
injection.data[stype].payload = agent.removePayloadDelimiters(reqPayload, False)
injection.data[stype].where = where
injection.data[stype].vector = vector
injection.data[stype].comment = comment
injection.data[stype].templatePayload = templatePayload
if hasattr(test, "details"):
for detailKey, detailValue in test.details.items():
if detailKey == "dbms" and injection.dbms is None:
injection.dbms = detailValue
kb.dbms = detailValue
elif detailKey == "dbms_version" and injection.dbms_version is None:
injection.dbms_version = detailValue
kb.dbmsVersion = [ detailValue ]
elif detailKey == "os" and injection.os is None:
injection.os = detailValue
if conf.beep:
beep()
# There is no need to perform this test for other
# <where> tags
break
if injectable is True:
# There is no need to perform this test with others
# boundaries
break
# Flush the flag
kb.testMode = False
# Return the injection object
if injection.place is not None and injection.parameter is not None:
return injection
else:
return None
def heuristicCheckSqlInjection(place, parameter, value):
if kb.nullConnection:
debugMsg = "heuristic checking skipped "
debugMsg += "because NULL connection used"
logger.debug(debugMsg)
return
prefix = ""
suffix = ""
if conf.prefix or conf.suffix:
if conf.prefix:
prefix = conf.prefix
if conf.suffix:
suffix = conf.suffix
payload = "%s%s%s%s" % (value, prefix, randomStr(length=10, alphabet=['"', '\'', ')', '(']), suffix)
payload = agent.payload(place, parameter, value, payload)
Request.queryPage(payload, place, raise404=False)
result = wasLastRequestDBMSError()
infoMsg = "heuristic test shows that %s " % place
infoMsg += "parameter '%s' might " % parameter
if result:
infoMsg += "be injectable (possible DBMS: %s)" % (kb.htmlFp[-1] if kb.htmlFp else 'Unknown')
logger.info(infoMsg)
else:
infoMsg += "not be injectable"
logger.warning(infoMsg)
def checkDynParam(place, parameter, value):
"""
This function checks if the url parameter is dynamic. If it is
dynamic, the content of the page differs, otherwise the
dynamicity might depend on another parameter.
"""
conf.matchRatio = None
infoMsg = "testing if %s parameter '%s' is dynamic" % (place, parameter)
logger.info(infoMsg)
randInt = randomInt()
payload = agent.payload(place, parameter, value, getUnicode(randInt))
dynResult = Request.queryPage(payload, place)
if True == dynResult:
return False
infoMsg = "confirming that %s parameter '%s' is dynamic" % (place, parameter)
logger.info(infoMsg)
randInt = randomInt()
payload = agent.payload(place, parameter, value, getUnicode(randInt))
dynResult = Request.queryPage(payload, place)
return not dynResult
def checkDynamicContent(firstPage, secondPage):
"""
This function checks if the provided pages have dynamic content. If they
are dynamic, proper markings will be made.
"""
if kb.nullConnection:
debugMsg = "dynamic content checking skipped "
debugMsg += "because NULL connection used"
logger.debug(debugMsg)
return
if conf.longestCommon:
debugMsg = "dynamic content checking skipped "
debugMsg += "because longest common comparison used"
logger.debug(debugMsg)
return
infoMsg = "searching for dynamic content"
logger.info(infoMsg)
blocks = SequenceMatcher(None, firstPage, secondPage).get_matching_blocks()
kb.dynamicMarkings = []
# Removing too small matching blocks
i = 0
while i < len(blocks):
block = blocks[i]
(_, _, length) = block
if length <= conf.dynMarkLength:
blocks.remove(block)
else:
i += 1
# Making of dynamic markings based on prefix/suffix principle
if len(blocks) > 0:
blocks.insert(0, None)
blocks.append(None)
for i in xrange(len(blocks) - 1):
prefix = firstPage[blocks[i][0]:blocks[i][0] + blocks[i][2]] if blocks[i] else None
suffix = firstPage[blocks[i + 1][0]:blocks[i + 1][0] + blocks[i + 1][2]] if blocks[i + 1] else None
if prefix is None and blocks[i + 1][0] == 0:
continue
if suffix is None and (blocks[i][0] + blocks[i][2] >= len(firstPage)):
continue
prefix = trimAlphaNum(prefix)
suffix = trimAlphaNum(suffix)
kb.dynamicMarkings.append((re.escape(prefix[-conf.dynMarkLength/2:]) if prefix else None, re.escape(suffix[:conf.dynMarkLength/2]) if suffix else None))
if len(kb.dynamicMarkings) > 0:
infoMsg = "dynamic content marked for removal (%d region%s)" % (len(kb.dynamicMarkings), 's' if len(kb.dynamicMarkings) > 1 else '')
logger.info(infoMsg)
def checkStability():
"""
This function checks if the URL content is stable requesting the
same page two times with a small delay within each request to
assume that it is stable.
In case the content of the page differs when requesting
the same page, the dynamicity might depend on other parameters,
like for instance string matching (--string).
"""
infoMsg = "testing if the url is stable, wait a few seconds"
logger.info(infoMsg)
firstPage = kb.originalPage # set inside checkConnection()
time.sleep(1)
secondPage, _ = Request.queryPage(content=True)
kb.pageStable = (firstPage == secondPage)
if kb.pageStable:
if firstPage:
logMsg = "url is stable"
logger.info(logMsg)
else:
errMsg = "there was an error checking the stability of page "
errMsg += "because of lack of content. please check the "
errMsg += "page request results (and probable errors) by "
errMsg += "using higher verbosity levels"
raise sqlmapNoneDataException, errMsg
else:
warnMsg = "url is not stable, sqlmap will base the page "
warnMsg += "comparison on a sequence matcher. If no dynamic nor "
warnMsg += "injectable parameters are detected, or in case of "
warnMsg += "junk results, refer to user's manual paragraph "
warnMsg += "'Page comparison' and provide a string or regular "
warnMsg += "expression to match on"
logger.warn(warnMsg)
message = "how do you want to proceed? [C(ontinue)/s(tring)/r(egex)/q(uit)] "
test = readInput(message, default="C")
if test and test[0] in ("q", "Q"):
raise sqlmapUserQuitException
elif test and test[0] in ("s", "S"):
showStaticWords(firstPage, secondPage)
message = "please enter value for parameter 'string': "
test = readInput(message)
if test:
conf.string = test
if kb.nullConnection:
debugMsg = "turning off NULL connection "
debugMsg += "support because of string checking"
logger.debug(debugMsg)
kb.nullConnection = None
else:
errMsg = "Empty value supplied"
raise sqlmapNoneDataException, errMsg
elif test and test[0] in ("r", "R"):
message = "please enter value for parameter 'regex': "
test = readInput(message)
if test:
conf.regex = test
if kb.nullConnection:
debugMsg = "turning off NULL connection "
debugMsg += "support because of regex checking"
logger.debug(debugMsg)
kb.nullConnection = None
else:
errMsg = "Empty value supplied"
raise sqlmapNoneDataException, errMsg
else:
checkDynamicContent(firstPage, secondPage)
count = 0
while not Request.queryPage():
count += 1
if count > conf.retries:
errMsg = "target url is too dynamic. unable to continue. "
errMsg += "consider using other switches (e.g. "
errMsg += "--longest-common, --string, --text-only, etc.)"
raise sqlmapSiteTooDynamic, errMsg
warnMsg = "target url is heavily dynamic"
warnMsg += ", sqlmap is going to retry the request"
logger.critical(warnMsg)
secondPage, _ = Request.queryPage(content=True)
checkDynamicContent(firstPage, secondPage)
return kb.pageStable
def checkString():
if not conf.string:
return True
condition = (
kb.resumedQueries.has_key(conf.url) and
kb.resumedQueries[conf.url].has_key("String") and
kb.resumedQueries[conf.url]["String"][:-1] == conf.string
)
if condition:
return True
infoMsg = "testing if the provided string is within the "
infoMsg += "target URL page content"
logger.info(infoMsg)
page, _ = Request.queryPage(content=True)
if conf.string in page:
setString()
else:
warnMsg = "you provided '%s' as the string to " % conf.string
warnMsg += "match, but such a string is not within the target "
warnMsg += "URL page content original request, sqlmap will "
warnMsg += "keep going anyway"
logger.warn(warnMsg)
return True
def checkRegexp():
if not conf.regexp:
return True
condition = (
kb.resumedQueries.has_key(conf.url) and
kb.resumedQueries[conf.url].has_key("Regular expression") and
kb.resumedQueries[conf.url]["Regular expression"][:-1] == conf.regexp
)
if condition:
return True
infoMsg = "testing if the provided regular expression matches within "
infoMsg += "the target URL page content"
logger.info(infoMsg)
page, _ = Request.queryPage(content=True)
if re.search(conf.regexp, page, re.I | re.M):
setRegexp()
else:
warnMsg = "you provided '%s' as the regular expression to " % conf.regexp
warnMsg += "match, but such a regular expression does not have any "
warnMsg += "match within the target URL page content, sqlmap "
warnMsg += "will keep going anyway"
logger.warn(warnMsg)
return True
def checkNullConnection():
"""
Reference: http://www.wisec.it/sectou.php?id=472f952d79293
"""
infoMsg = "testing NULL connection to the target url"
logger.info(infoMsg)
try:
page, headers = Request.getPage(method=HTTPMETHOD.HEAD)
if not page and 'Content-Length' in headers:
kb.nullConnection = NULLCONNECTION.HEAD
infoMsg = "NULL connection is supported with HEAD header"
logger.info(infoMsg)
else:
page, headers = Request.getPage(auxHeaders={"Range": "bytes=-1"})
if page and len(page) == 1 and 'Content-Range' in headers:
kb.nullConnection = NULLCONNECTION.RANGE
infoMsg = "NULL connection is supported with GET header "
infoMsg += "'%s'" % kb.nullConnection
logger.info(infoMsg)
except sqlmapConnectionException, errMsg:
errMsg = getUnicode(errMsg)
raise sqlmapConnectionException, errMsg
return kb.nullConnection is not None
def checkConnection(suppressOutput=False):
try:
socket.gethostbyname(conf.hostname)
except socket.gaierror:
errMsg = "host '%s' does not exist" % conf.hostname
raise sqlmapConnectionException, errMsg
if not suppressOutput:
infoMsg = "testing connection to the target url"
logger.info(infoMsg)
try:
page, _ = Request.queryPage(content=True)
kb.originalPage = kb.pageTemplate = page
except sqlmapConnectionException, errMsg:
errMsg = getUnicode(errMsg)
raise sqlmapConnectionException, errMsg
return True