Add new tamper script 'mysqlversioncomment.py'#5923
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pinoyvendetta wants to merge 3 commits intosqlmapproject:masterfrom
Open
Add new tamper script 'mysqlversioncomment.py'#5923pinoyvendetta wants to merge 3 commits intosqlmapproject:masterfrom
pinoyvendetta wants to merge 3 commits intosqlmapproject:masterfrom
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Replaces common SQL keywords with MySQL versioned comments (e.g., 'SELECT' becomes '/*!50000SELECT*/').
tanaydin
reviewed
Jul 14, 2025
tamper/mysqlversioncomment.py
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| sorted_keywords = sorted(keywords.keys(), key=len, reverse=True) | ||
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| for keyword in sorted_keywords: | ||
| if "()" in keyword: |
Contributor
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can simplify like
ret_val = re.sub(r"(?i)\b%s\b" % re.escape(keyword), keywords[keyword], ret_val)
you are always escaping, or add escaped strings for substitution which is faster
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please check my merge request
tanaydin
reviewed
Jul 14, 2025
tamper/mysqlversioncomment.py
Outdated
| ret_val = payload | ||
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| if payload: | ||
| sorted_keywords = sorted(keywords.keys(), key=len, reverse=True) |
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Description
This pull request introduces a new tamper script,
mysqlversioncomment.py, designed to obfuscate SQL injection payloads targeting MySQL databases. The script wraps a comprehensive list of common SQL keywords, functions, and information schema objects within MySQL-specific versioned comments (e.g.,/*!50000KEYWORD*/).This obfuscation technique is effective at bypassing basic Web Application Firewalls (WAFs) and Intrusion Detection Systems (IDS) that perform simple keyword filtering without correctly parsing MySQL's versioned comment syntax.
How it Works
The script iterates through a predefined list of keywords and functions. To ensure correctness, it replaces longer keywords first (e.g.,
GROUP BYbeforeBY) and uses word boundaries to prevent accidental replacement of substrings within other words.Example of transformation:
Before:
After:
This addition provides another valuable tool for penetration testers to use when faced with filtered environments.