mirror of
https://github.com/sqlmapproject/sqlmap.git
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758 lines
28 KiB
Python
758 lines
28 KiB
Python
#!/usr/bin/env python
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"""
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$Id$
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Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
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See the file 'doc/COPYING' for copying permission
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"""
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import re
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import socket
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import time
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from difflib import SequenceMatcher
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from lib.core.agent import agent
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from lib.core.common import beep
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from lib.core.common import calculateDeltaSeconds
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from lib.core.common import getUnicode
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from lib.core.common import popValue
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from lib.core.common import pushValue
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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 removeDynamicContent
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from lib.core.common import showStaticWords
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from lib.core.common import trimAlphaNum
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from lib.core.common import wasLastRequestDBMSError
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from lib.core.common import DynamicContentItem
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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.datatype import advancedDict
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from lib.core.datatype import injectionDict
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from lib.core.enums import HTTPMETHOD
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from lib.core.enums import NULLCONNECTION
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from lib.core.enums import PAYLOAD
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from lib.core.enums import PLACE
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from lib.core.exception import sqlmapConnectionException
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from lib.core.exception import sqlmapGenericException
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from lib.core.exception import sqlmapNoneDataException
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from lib.core.exception import sqlmapSiteTooDynamic
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from lib.core.exception import sqlmapUserQuitException
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from lib.core.session import setString
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from lib.core.session import setRegexp
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from lib.core.settings import ERROR_SPACE
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from lib.core.settings import ERROR_EMPTY_CHAR
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from lib.request.connect import Connect as Request
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from plugins.dbms.firebird.syntax import Syntax as Firebird
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from plugins.dbms.postgresql.syntax import Syntax as PostgreSQL
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from plugins.dbms.mssqlserver.syntax import Syntax as MSSQLServer
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from plugins.dbms.oracle.syntax import Syntax as Oracle
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from plugins.dbms.mysql.syntax import Syntax as MySQL
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from plugins.dbms.access.syntax import Syntax as Access
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from plugins.dbms.sybase.syntax import Syntax as Sybase
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from plugins.dbms.sqlite.syntax import Syntax as SQLite
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from plugins.dbms.maxdb.syntax import Syntax as MaxDB
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def unescape(string, dbms):
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unescaper = {
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"Access": Access.unescape,
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"Firebird": Firebird.unescape,
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"MaxDB": MaxDB.unescape,
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"Microsoft SQL Server": MSSQLServer.unescape,
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"MySQL": MySQL.unescape,
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"Oracle": Oracle.unescape,
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"PostgreSQL": PostgreSQL.unescape,
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"SQLite": SQLite.unescape,
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"Sybase": Sybase.unescape
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}
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if dbms in unescaper:
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return unescaper[dbms](string)
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else:
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return string
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def unescapeDbms(payload, injection, dbms):
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# If this is a DBMS-specific test (dbms), sqlmap identified the
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# DBMS during previous a test (injection.dbms) or the user
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# provided a DBMS (conf.dbms), unescape the strings between single
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# quotes in the payload
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if injection.dbms is not None:
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payload = unescape(payload, injection.dbms)
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elif dbms is not None:
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payload = unescape(payload, dbms)
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elif conf.dbms is not None:
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payload = unescape(payload, conf.dbms)
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return payload
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def checkSqlInjection(place, parameter, value):
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# Store here the details about boundaries and payload used to
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# successfully inject
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injection = injectionDict()
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# Clear cookies after each query page attempt
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kb.flushCookies = True
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for test in conf.tests:
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title = test.title
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stype = test.stype
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clause = test.clause
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# Skip test if the risk is higher than the provided (or default)
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# value
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# Parse test's <risk>
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if test.risk > conf.risk:
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debugMsg = "skipping test '%s' because the risk " % title
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debugMsg += "is higher than the provided"
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logger.debug(debugMsg)
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continue
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# Skip test if the level is higher than the provided (or default)
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# value
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# Parse test's <level>
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if test.level > conf.level:
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debugMsg = "skipping test '%s' because the level " % title
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debugMsg += "is higher than the provided"
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logger.debug(debugMsg)
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continue
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# Skip DBMS-specific test if it does not match either the
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# previously identified or the user's provided DBMS
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if "details" in test and "dbms" in test.details:
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dbms = test.details.dbms
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else:
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dbms = None
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if dbms is not None:
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if injection.dbms is not None and injection.dbms != dbms:
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "the back-end DBMS identified is "
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debugMsg += "%s" % injection.dbms
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logger.debug(debugMsg)
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continue
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if conf.dbms is not None and conf.dbms.lower() != dbms.lower():
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "the provided DBMS is %s" % conf.dbms
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logger.debug(debugMsg)
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continue
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# Skip test if it is the same SQL injection type already
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# identified by another test
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if injection.data and stype in injection.data:
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "the payload for %s has " % PAYLOAD.SQLINJECTION[stype]
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debugMsg += "already been identified"
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logger.debug(debugMsg)
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continue
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# Skip test if it does not match the same SQL injection clause
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# already identified by another test
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clauseMatch = False
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for clauseTest in clause:
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if injection.clause is not None and clauseTest in injection.clause:
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clauseMatch = True
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break
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if clause != [ 0 ] and injection.clause and not clauseMatch:
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debugMsg = "skipping test '%s' because the clauses " % title
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debugMsg += "differs from the clause already identified"
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logger.debug(debugMsg)
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continue
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infoMsg = "testing '%s'" % title
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logger.info(infoMsg)
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# Parse test's <request>
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comment = agent.getComment(test.request)
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fstPayload = agent.cleanupPayload(test.request.payload, value)
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fstPayload = unescapeDbms(fstPayload, injection, dbms)
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fstPayload = "%s%s" % (fstPayload, comment)
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if stype != 4 and clause != [2, 3] and clause != [ 2 ]:
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space = " "
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else:
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space = ""
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if conf.prefix is not None and conf.suffix is not None:
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# Create a custom boundary object for user's supplied prefix
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# and suffix
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boundary = advancedDict()
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boundary.level = 1
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boundary.clause = [ 0 ]
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boundary.where = [ 1, 2, 3 ]
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boundary.prefix = conf.prefix
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boundary.suffix = conf.suffix
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if " like" in boundary.suffix.lower():
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if "'" in boundary.suffix.lower():
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boundary.ptype = 3
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elif '"' in boundary.suffix.lower():
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boundary.ptype = 5
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elif "'" in boundary.suffix.lower():
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boundary.ptype = 2
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elif '"' in boundary.suffix.lower():
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boundary.ptype = 4
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else:
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boundary.ptype = 1
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# Prepend user's provided boundaries to all others boundaries
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conf.boundaries.insert(0, boundary)
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for boundary in conf.boundaries:
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injectable = False
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# Skip boundary if the level is higher than the provided (or
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# default) value
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# Parse boundary's <level>
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if boundary.level > conf.level:
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# NOTE: shall we report every single skipped boundary too?
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continue
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# Skip boundary if it does not match against test's <clause>
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# Parse test's <clause> and boundary's <clause>
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clauseMatch = False
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for clauseTest in test.clause:
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if clauseTest in boundary.clause:
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clauseMatch = True
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break
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if test.clause != [ 0 ] and boundary.clause != [ 0 ] and not clauseMatch:
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continue
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# Skip boundary if it does not match against test's <where>
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# Parse test's <where> and boundary's <where>
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whereMatch = False
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for where in test.where:
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if where in boundary.where:
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whereMatch = True
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break
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if not whereMatch:
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continue
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# Parse boundary's <prefix>, <suffix> and <ptype>
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prefix = boundary.prefix if boundary.prefix else ""
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suffix = boundary.suffix if boundary.suffix else ""
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ptype = boundary.ptype
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# If the previous injections succeeded, we know which prefix,
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# suffix and parameter type to use for further tests, no
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# need to cycle through the boundaries for the following tests
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condBound = (injection.prefix is not None and injection.suffix is not None)
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condBound &= (injection.prefix != prefix or injection.suffix != suffix)
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condType = injection.ptype is not None and injection.ptype != ptype
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if condBound or condType:
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continue
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# For each test's <where>
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for where in test.where:
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# Threat the parameter original value according to the
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# test's <where> tag
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if where == 1:
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origValue = value
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elif where == 2:
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origValue = "-%s" % randomInt()
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# Save old page template and replace with new one
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pushValue(kb.pageTemplate)
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kb.pageTemplate, _ = Request.queryPage(agent.payload(place, parameter, value, origValue), place, content=True)
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elif where == 3:
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origValue = ""
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# Forge request payload by prepending with boundary's
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# prefix and appending the boundary's suffix to the
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# test's ' <payload><comment> ' string
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boundPayload = "%s%s%s%s %s" % (origValue, prefix, space, fstPayload, suffix)
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boundPayload = boundPayload.strip()
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boundPayload = agent.cleanupPayload(boundPayload, value)
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reqPayload = agent.payload(place, parameter, value, boundPayload)
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# Perform the test's request and check whether or not the
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# payload was successful
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# Parse test's <response>
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for method, check in test.response.items():
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check = agent.cleanupPayload(check, value)
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# In case of boolean-based blind SQL injection
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if method == "comparison":
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sndPayload = agent.cleanupPayload(test.response.comparison, value)
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sndPayload = unescapeDbms(sndPayload, injection, dbms)
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sndPayload = "%s%s" % (sndPayload, comment)
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# Forge response payload by prepending with
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# boundary's prefix and appending the boundary's
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# suffix to the test's ' <payload><comment> '
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# string
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boundPayload = "%s%s%s%s %s" % (origValue, prefix, space, sndPayload, suffix)
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boundPayload = boundPayload.strip()
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boundPayload = agent.cleanupPayload(boundPayload, value)
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cmpPayload = agent.payload(place, parameter, value, boundPayload)
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# Useful to set conf.matchRatio at first based on
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# the False response content
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conf.matchRatio = None
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_ = Request.queryPage(cmpPayload, place)
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# Compare True and False response contents
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trueResult = Request.queryPage(reqPayload, place)
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if trueResult:
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falseResult = Request.queryPage(cmpPayload, place)
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if not falseResult:
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infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)
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logger.info(infoMsg)
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kb.paramMatchRatio[(place, parameter)] = conf.matchRatio
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injectable = True
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kb.paramMatchRatio[(place, parameter)] = conf.matchRatio
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# In case of error-based or UNION query SQL injections
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elif method == "grep":
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# Perform the test's request and grep the response
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# body for the test's <grep> regular expression
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reqBody, _ = Request.queryPage(reqPayload, place, content=True)
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match = re.search(check, reqBody, re.DOTALL | re.IGNORECASE)
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if not match:
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continue
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output = match.group('result')
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if output:
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output = output.replace(ERROR_SPACE, " ").replace(ERROR_EMPTY_CHAR, "")
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if output == "1":
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infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)
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logger.info(infoMsg)
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injectable = True
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# In case of time-based blind or stacked queries
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# SQL injections
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elif method == "time":
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# Perform the test's request and check how long
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# it takes to get the response back
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start = time.time()
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_ = Request.queryPage(reqPayload, place)
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duration = calculateDeltaSeconds(start)
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if duration >= conf.timeSec:
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infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)
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logger.info(infoMsg)
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injectable = True
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# Restore page template
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if where == 2:
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kb.pageTemplate = popValue()
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# If the injection test was successful feed the injection
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# object with the test's details
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if injectable is True:
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# Feed with the boundaries details only the first time a
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# test has been successful
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if injection.place is None or injection.parameter is None:
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if place == PLACE.UA:
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injection.parameter = conf.agent
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else:
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injection.parameter = parameter
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injection.place = place
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injection.ptype = ptype
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injection.prefix = prefix
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injection.suffix = suffix
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injection.clause = clause
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if "vector" in test and test.vector is not None:
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vector = "%s%s" % (test.vector, comment)
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else:
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vector = None
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# Feed with test details every time a test is successful
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injection.data[stype] = advancedDict()
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injection.data[stype].title = title
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injection.data[stype].payload = agent.removePayloadDelimiters(reqPayload, False)
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injection.data[stype].where = where
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injection.data[stype].vector = vector
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injection.data[stype].comment = comment
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if "details" in test:
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for detailKey, detailValue in test.details.items():
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if detailKey == "dbms" and injection.dbms is None:
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injection.dbms = detailValue
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kb.dbms = detailValue
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elif detailKey == "dbms_version" and injection.dbms_version is None:
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injection.dbms_version = detailValue
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kb.dbmsVersion = [ detailValue ]
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elif detailKey == "os" and injection.os is None:
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injection.os = detailValue
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if conf.beep:
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beep()
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# There is no need to perform this test for other
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# <where> tags
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break
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if injectable is True:
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# There is no need to perform this test with others
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# boundaries
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break
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# Flush the flag
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kb.flushCookies = False
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# Return the injection object
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if injection.place is not None and injection.parameter is not None:
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return injection
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else:
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return None
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def heuristicCheckSqlInjection(place, parameter, value):
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if kb.nullConnection:
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debugMsg = "heuristic checking skipped "
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debugMsg += "because NULL connection used"
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logger.debug(debugMsg)
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return
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prefix = ""
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suffix = ""
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if conf.prefix or conf.suffix:
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if conf.prefix:
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prefix = conf.prefix
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if conf.suffix:
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suffix = conf.suffix
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payload = "%s%s%s%s" % (value, prefix, randomStr(length=10, alphabet=['"', '\'', ')', '(']), suffix)
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payload = agent.payload(place, parameter, value, payload)
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Request.queryPage(payload, place, raise404=False)
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result = wasLastRequestDBMSError()
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infoMsg = "heuristics shows that %s " % place
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infoMsg += "parameter '%s' might " % parameter
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if result:
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infoMsg += "be injectable (possible DBMS: %s)" % (kb.htmlFp[-1] if kb.htmlFp else 'Unknown')
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logger.info(infoMsg)
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else:
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infoMsg += "not be injectable"
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logger.warning(infoMsg)
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def checkDynParam(place, parameter, value):
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"""
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This function checks if the url parameter is dynamic. If it is
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dynamic, the content of the page differs, otherwise the
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dynamicity might depend on another parameter.
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"""
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conf.matchRatio = None
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infoMsg = "testing if %s parameter '%s' is dynamic" % (place, parameter)
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logger.info(infoMsg)
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randInt = randomInt()
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payload = agent.payload(place, parameter, value, getUnicode(randInt))
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dynResult = Request.queryPage(payload, place)
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if True == dynResult:
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return False
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infoMsg = "confirming that %s parameter '%s' is dynamic" % (place, parameter)
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logger.info(infoMsg)
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randInt = randomInt()
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payload = agent.payload(place, parameter, value, getUnicode(randInt))
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dynResult = Request.queryPage(payload, place)
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return not dynResult
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def checkDynamicContent(firstPage, secondPage):
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"""
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This function checks if the provided pages have dynamic content. If they
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are dynamic, proper markings will be made.
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"""
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if kb.nullConnection:
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debugMsg = "dynamic content checking skipped "
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debugMsg += "because NULL connection used"
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logger.debug(debugMsg)
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return
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if conf.longestCommon:
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debugMsg = "dynamic content checking skipped "
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debugMsg += "because longest common comparison used"
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logger.debug(debugMsg)
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return
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infoMsg = "searching for dynamic content"
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logger.info(infoMsg)
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blocks = SequenceMatcher(None, firstPage, secondPage).get_matching_blocks()
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kb.dynamicMarkings = []
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# Removing too small matching blocks
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i = 0
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while i < len(blocks):
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block = blocks[i]
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(_, _, length) = block
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if length <= conf.dynMarkLength:
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blocks.remove(block)
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else:
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i += 1
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# Making of dynamic markings based on prefix/suffix principle
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if len(blocks) > 0:
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blocks.insert(0, None)
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blocks.append(None)
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for i in xrange(len(blocks) - 1):
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prefix = firstPage[blocks[i][0]:blocks[i][0] + blocks[i][2]] if blocks[i] else None
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suffix = firstPage[blocks[i + 1][0]:blocks[i + 1][0] + blocks[i + 1][2]] if blocks[i + 1] else None
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if prefix is None and blocks[i + 1][0] == 0:
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continue
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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.pageTemplate # 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:
|
|
start = time.time()
|
|
page, _ = Request.queryPage(content=True)
|
|
kb.responseTime = time.time() - start
|
|
kb.pageTemplate = page
|
|
except sqlmapConnectionException, errMsg:
|
|
errMsg = getUnicode(errMsg)
|
|
raise sqlmapConnectionException, errMsg
|
|
|
|
return True
|