Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/Zyrexnn/Cybermesnpx agentmods add skills/zyrexnn/cybermes/enterprise-vpn-attackWrote 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/zyrexnn/cybermes/enterprise-vpn-attack)<a href="https://agentmods.dev/skills/zyrexnn/cybermes/enterprise-vpn-attack"><img src="https://agentmods.dev/badge/skills/zyrexnn/cybermes/enterprise-vpn-attack.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 | $0.00158 | $0.05014 |
| Opus 5 | $0.00079 | $0.02507 |
| Sonnet 5 | $0.00032 | $0.01003 |
| Haiku 4.5 | $0.00016 | $0.00501 |
Grade A, and why
enterprise-vpn-attack scanned grade A 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 8d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -skI 'https://target/+CSCOE+/logon.html' | head -10 This is a copy
100% identical to enterprise-vpn-attack — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 357 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When to use this skill
Trigger when recon surfaces:
*.<client>.example/+CSCOE+/logon.htmlor similar+CSCOE+paths → Cisco ASA / AnyConnectintranet.*/vpn.*/connect.*/webvpn.*/wc.*/remote.*subdomains- Port 443 returning login pages with
Server: Apacheor banner like "AnyConnect", "FortiGate", "NetScaler", "GlobalProtect", "Pulse", "Ivanti" - TCP 8443 / 4443 / 10443 / 8888 (common VPN web-mgmt ports)
- HTTP responses with
Set-Cookie: webvpn=(Cisco) /SVPNCOOKIE=(Fortinet) /NSC_AAA=(Citrix) /DSAuthSession=(Pulse) /BIGipServer*(F5)
DO NOT use for:
- Internal lateral-movement post-foothold (out of scope per user's boundary)
- VPN client-side bugs (different attack class)
- IPsec / L2TP / OpenVPN (different protocols, not SSL VPN web stack)
Vendor identification (fingerprinting)
Cisco ASA / AnyConnect
curl -skI 'https://target/+CSCOE+/logon.html' | head -10
# Look for: Set-Cookie: webvpn=; X-Frame-Options: SAMEORIGIN; CSP: ... block-all-mixed-content
# Login page contains: "AnyConnect", "CSCOE", "logon.html"
ASA version: not banner-disclosed in modern builds; need to derive from JS file paths or test specific paths.
# Path-based version hints (older builds leaked builds in URLs)
curl -sk 'https://target/+CSCOE+/sdesktop/scan-finalize?path=test'
curl -sk 'https://target/+CSCOE+/saml/sp/metadata' # 200 = SAML auth enabled
curl -sk 'https://target/CSCOSSLC/config-auth' # AnyConnect handshake endpoint
Fortinet FortiGate / FortiOS
curl -skI 'https://target/remote/login' | head -10
# Look for: Set-Cookie: SVPNCOOKIE=, Server header missing or "xxxxxxxx-xxxxx"
# Login page contains: "FortiGate", "Fortinet", "SSL-VPN"
Version: /remote/info sometimes leaks (older), or /login?username= 302 response
Citrix NetScaler / ADC / Gateway
curl -skI 'https://target/' | head -10
# Look for: Set-Cookie: NSC_AAA=, Set-Cookie: NSC_USER=, Server: NetScaler
# Login page contains: "NetScaler", "Citrix Gateway"
# Version banner
curl -sk 'https://target/vpn/index.html' | grep -oE 'NetScaler/[0-9.]+|NS[0-9.]+'
curl -sk 'https://target/menu/neo' # 200 if vulnerable to CVE-2019-19781 era
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.
- 8d ago First seen · 357 lines · 158 tokens per session scan A 3efcc1022cf2
enterprise-vpn-attack is a skill published in the GitHub repository Zyrexnn/Cybermes (668 stars, last pushed 9d ago), licensed Apache-2.0. It adds 158 tokens to every session and 5,014 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 100% identical to enterprise-vpn-attack, differing in 0 lines, and is treated as a copy.
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