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Add --prove, opt-in --auto-tamper WAF bypass, and blindbinary/infoschema2innodb tampers

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Miroslav Štampar 2026-06-17 15:58:08 +02:00
parent a0cbfba9bd
commit 1404133538
16 changed files with 992 additions and 15 deletions
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36
lib/controller/action.py
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@ -8,11 +8,14 @@ See the file 'LICENSE' for copying permission
from lib.controller.handler import setHandler
from lib.core.common import Backend
from lib.core.common import Format
from lib.core.common import hashDBWrite
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.data import paths
from lib.core.enums import CONTENT_TYPE
from lib.core.enums import DBMS
from lib.core.enums import HASHDB_KEYS
from lib.core.exception import SqlmapNoneDataException
from lib.core.exception import SqlmapUnsupportedDBMSException
from lib.core.settings import SUPPORTED_DBMS
@ -30,8 +33,41 @@ def action():
# First of all we have to identify the back-end database management
# system to be able to go ahead with the injection
# automatic WAF-bypass: if a WAF/IPS is present and the back-end DBMS is already indicated by the error
# page or the heuristic checks, skip active fingerprinting (the WAF would just block its payloads
# and flood the run with 403s) and assume that DBMS, so the user gets a usable result
if kb.wafBypass and not conf.forceDbms:
fallback = Backend.getErrorParsedDBMSes() or ([kb.heuristicDbms] if kb.heuristicDbms else [])
fallback = next((_ for _ in fallback if _ and _.lower() in SUPPORTED_DBMS), None)
if fallback:
logger.warning("skipping active back-end DBMS fingerprinting behind the WAF/IPS and assuming '%s' from error/heuristic detection" % fallback)
conf.forceDbms = fallback
setHandler()
if kb.wafBypass and Backend.getDbms(): # persist the assumed DBMS so a resumed run restores it instead of re-fingerprinting (and dead-ending) behind the WAF
hashDBWrite(HASHDB_KEYS.DBMS, Backend.getDbms())
# automatic WAF-bypass: with MySQL behind the WAF, make data retrieval AND table enumeration survive a
# libinjection-class WAF (e.g. OWASP CRS), verified end-to-end through ModSecurity/CRS:
# * fingerprinting was skipped, so flag has_information_schema (modern MySQL >=5.0 always has it) -
# otherwise enumeration wrongly assumes 'MySQL < 5.0' and bails with "no tables";
# * 'blindbinary' reshapes the single-character read ORD(MID())->RIGHT(LEFT())>BINARY 0x.. (sheds the
# ORD/MID function names scored by 942151/942190);
# * 'infoschema2innodb' moves table enumeration off 'information_schema' (scored by 942140) onto
# 'mysql.innodb_table_stats', which is not on those blocklists.
# (blindbinary also reshapes PostgreSQL, but full extraction through the CRS proxy garbles there - an
# open issue - so PG is not auto-applied; it stays available as manual '--tamper=blindbinary'.)
if kb.wafBypass and Backend.getIdentifiedDbms() == DBMS.MYSQL:
kb.data.has_information_schema = True
if not conf.tamper:
from lib.utils.wafbypass import loadTamper
for _name in ("blindbinary", "infoschema2innodb"):
function = loadTamper(_name)
if function is not None and function not in (kb.tamperFunctions or []):
kb.tamperFunctions = (kb.tamperFunctions or []) + [function]
logger.info("using tamper scripts 'blindbinary' and 'infoschema2innodb' so data retrieval and table enumeration can pass the WAF/IPS")
if not Backend.getDbms() or not conf.dbmsHandler:
htmlParsed = Format.getErrorParsedDBMSes()