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 tunneling-and-pivotinggit 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/tunneling-and-pivoting)<a href="https://agentmods.dev/skills/yaklang/hack-skills/tunneling-and-pivoting"><img src="https://agentmods.dev/badge/skills/yaklang/hack-skills/tunneling-and-pivoting/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/yaklang/hack-skills/tunneling-and-pivoting"><img src="https://agentmods.dev/badge/skills/yaklang/hack-skills/tunneling-and-pivoting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket warn
- Snyk fail
- NVIDIA SkillSpector warn
SkillSpector: 7 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high YARA Match · line 61 YARA rule matched a hack tool or exploit indicator (offensive tools, reconnaissance, privilege escalation, or exploit frameworks).Fix: Remove offensive tool references and exploit code. Legitimate agent skills should not contain penetration testing tools, exploit frameworks, or reconnaissance utilities.
- medium Privilege Escalation · line 121 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 122 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 134 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 135 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 152 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 153 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
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 | $0.00059 | $0.02898 |
| Opus 5 | $0.00030 | $0.01449 |
| Sonnet 5 | $0.00012 | $0.00580 |
| Haiku 4.5 | $0.00006 | $0.00290 |
Grade B, and why
tunneling-and-pivoting scanned grade B with 1 finding 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 9d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo ip tuntap add user $(whoami) mode tun ligolo Copies of this mod
3 near-identical copies found in the catalogue:
- tunneling-and-pivoting — 100% identical, 0 lines differ
- tunneling-and-pivoting — 100% identical, 0 lines differ
- tunneling-and-pivoting — 94% identical, 4 lines differ
How it starts
The opening of the file, as written. The whole thing — 344 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: Tunneling & Pivoting — Expert Attack Playbook
AI LOAD INSTRUCTION: Expert tunneling and pivoting techniques. Covers SSH port forwarding (local/remote/dynamic/jump), Chisel reverse SOCKS, Ligolo-ng transparent TUN pivoting, socat relays, DNS/ICMP/HTTP tunneling, ProxyChains configuration, Windows pivoting (netsh/plink), and multi-layer chaining. Base models miss egress-aware tool selection and transparent routing setup.
0. RELATED ROUTING
Before going deep, consider loading:
- network-protocol-attacks for network-level attacks from pivot positions
- reverse-shell-techniques for establishing initial access shells
- unauthorized-access-common-services for exploiting services discovered through pivots
- linux-privilege-escalation or windows-privilege-escalation after pivoting to new hosts
1. SSH TUNNELING
Local Port Forward
Forward a local port to a remote service through the pivot.
# Access INTERNAL_HOST:3306 via localhost:3306
ssh -L 3306:INTERNAL_HOST:3306 user@PIVOT -N
# Access internal web app
ssh -L 8080:10.10.10.100:80 user@PIVOT -N
# Browse: http://localhost:8080
# Bind to all interfaces (share with teammates)
ssh -L 0.0.0.0:8080:INTERNAL:80 user@PIVOT -N
Remote Port Forward
Expose a local service to the pivot host's network.
# Make attacker's port 8000 accessible on pivot as pivot:9000
ssh -R 9000:127.0.0.1:8000 user@PIVOT -N
# Expose attacker's listener to internal network
ssh -R 0.0.0.0:4444:127.0.0.1:4444 user@PIVOT -N
# Internal hosts connect to PIVOT:4444 → reaches attacker:4444
Dynamic Port Forward (SOCKS Proxy)
# Create SOCKS4/5 proxy on localhost:1080
ssh -D 1080 user@PIVOT -N
# Use with proxychains
echo "socks5 127.0.0.1 1080" >> /etc/proxychains4.conf
proxychains nmap -sT -Pn -p 80,443,445 INTERNAL_SUBNET/24
# Or with browser SOCKS proxy → browse internal web apps
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.
- 9d ago First seen · 344 lines · 59 tokens per session scan B d3e413765f2d
tunneling-and-pivoting is a skill published in the GitHub repository yaklang/hack-skills (2,169 stars, last pushed 2mo ago), licensed MIT. It adds 59 tokens to every session and 2,898 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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