HackSkills is an organized knowledge base of installable skills that gives AI agents practical security knowledge across areas such as web security, privilege escalation, reverse engineering, and digital forensics. It is intended for bug bounty work, penetration testing, CTF competitions, and authorized security research. The catalogue entries are the project's own master, category, and topic skills.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add yaklang/hack-skills --skill sqli-sql-injectiongit clone --depth 1 https://github.com/yaklang/hack-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/yaklang/hack-skills/sqli-sql-injection)<a href="https://agentmods.dev/skills/yaklang/hack-skills/sqli-sql-injection"><img src="https://agentmods.dev/badge/skills/yaklang/hack-skills/sqli-sql-injection.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.04232 |
| Opus 5 | $0.00019 | $0.02116 |
| Sonnet 5 | $0.00008 | $0.00846 |
| Haiku 4.5 | $0.00004 | $0.00423 |
Grade A, and why
sqli-sql-injection scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
3 near-identical copies found in the catalogue:
- sqli-sql-injection — 100% identical, 0 lines differ
- sqli-sql-injection — 100% identical, 0 lines differ
- sqli-sql-injection — 97% identical, 4 lines differ
How it starts
The opening of the file, as written. The whole thing — 490 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: SQL Injection — Expert Attack Playbook
AI LOAD INSTRUCTION: Advanced SQLi techniques. Assumes basic UNION/error/boolean-blind fundamentals known. Focuses on: per-database exploitation, out-of-band exfiltration, second-order injection, parameterized query bypass scenarios, filter evasion, and escalation to OS. For real-world CVE cases, SMB/DNS OOB exfiltration, INSERT/UPDATE injection patterns, and framework-specific exploitation (ThinkPHP, Django GIS), load the companion SCENARIOS.md.
0. RELATED ROUTING
- ghost-bits-cast-attack when the backend is Java with Jackson and your SQL keywords are WAF-blocked — Jackson's
charToHextable is indexed bych & 0xFF, so a Unicode character like丰(U+4E30) resolves to hex digit0inside a\uXXXXescape sequence, letting you smuggleUNION,SELECT,1, etc. without the WAF ever seeing them
1. QUICK START
Extended Scenarios
Also load SCENARIOS.md when you need:
- SMB out-of-band exfiltration via
LOAD_FILE+ UNC paths (Windows MySQL) - KEY injection / URI injection / non-parameter injection points
- INSERT/DELETE/UPDATE statement injection differences
- ThinkPHP5 array key injection (
updatexmlerror-based) - Django GIS Oracle
utl_inaddr.get_host_nameCVE - ORDER BY / LIMIT injection techniques
Advanced Reference
Also load SQLMAP_ADVANCED.md when you need:
- SQLMap tamper scripts matrix and WAF bypass tamper chain recipes (space2comment, between, charencode, etc.)
--technique,--risk/--levelcombinations and--second-urlfor second-order injection--os-shell/--os-pwnOS-level exploitation via SQLMap- INSERT/UPDATE/DELETE injection patterns with data exfiltration examples
- GraphQL + SQL injection (batched queries, nested field injection, mutation injection)
- DB-specific advanced functions: PostgreSQL dollar-sign quoting, MSSQL linked servers, Oracle DBMS_PIPE/DBMS_SCHEDULER
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 490 lines · 39 tokens per session scan A 35e31bc52ade
sqli-sql-injection is a skill published in the GitHub repository yaklang/hack-skills (2,098 stars, last pushed 2mo ago), licensed MIT. It adds 39 tokens to every session and 4,232 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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