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/26zl/cybersec-toolkitnpx agentmods add skills/26zl/cybersec-toolkit/building-red-team-c2-infrastructure-with-havocWrote 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/26zl/cybersec-toolkit/building-red-team-c2-infrastructure-with-havoc)<a href="https://agentmods.dev/skills/26zl/cybersec-toolkit/building-red-team-c2-infrastructure-with-havoc"><img src="https://agentmods.dev/badge/skills/26zl/cybersec-toolkit/building-red-team-c2-infrastructure-with-havoc/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/26zl/cybersec-toolkit/building-red-team-c2-infrastructure-with-havoc"><img src="https://agentmods.dev/badge/skills/26zl/cybersec-toolkit/building-red-team-c2-infrastructure-with-havoc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to critical
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 →
- critical YARA Match · line 3 YARA rule matched a known malware signature (reverse shell, backdoor, ransomware, C2 framework, or info stealer).Fix: Remove the malware payload or compromised file entirely. Investigate how it entered the skill and audit all other artifacts for additional indicators of compromise.
- high YARA Match · line 270 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.
- high YARA Match · line 277 YARA rule matched a known malware signature (reverse shell, backdoor, ransomware, C2 framework, or info stealer).Fix: Remove the malware payload or compromised file entirely. Investigate how it entered the skill and audit all other artifacts for additional indicators of compromise.
- medium Privilege Escalation · line 93 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 94 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 | $0.00040 | $0.02560 |
| Opus 5 | $0.00020 | $0.01280 |
| Sonnet 5 | $0.00008 | $0.00512 |
| Haiku 4.5 | $0.00004 | $0.00256 |
Grade A, and why
building-red-team-c2-infrastructure-with-havoc 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 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 rootlowPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt update Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Copies of this mod
2 near-identical copies found in the catalogue:
- building-red-team-c2-infrastructure-with-havoc — 98% identical, 7 lines differ
- building-red-team-c2-infrastructure-with-havoc — 91% identical, 42 lines differ
How it starts
The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Building Red Team C2 Infrastructure with Havoc
Overview
Havoc is a modern, open-source post-exploitation command and control (C2) framework created by C5pider. It provides a collaborative multi-operator interface similar to Cobalt Strike, featuring the Demon agent for Windows post-exploitation, customizable profiles for traffic malleable configurations, and support for HTTP/HTTPS/SMB listeners. This skill covers deploying production-grade Havoc C2 infrastructure with proper OPSEC considerations for authorized red team engagements.
When to Use
- When deploying or configuring building red team c2 infrastructure with havoc capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation
Prerequisites
- Ubuntu 22.04 LTS or Debian 11+ (for Teamserver)
- Kali Linux 2023+ (for Client)
- VPS providers: DigitalOcean, Linode, or AWS EC2 (minimum 2GB RAM, 2 vCPU)
- Domain name aged 30+ days with valid SSL certificate
- Written authorization for red team engagement
Architecture
┌──────────────────────────────────────────────────────────────┐
│ HAVOC C2 ARCHITECTURE │
├──────────────────────────────────────────────────────────────┤
│ │
│ ┌──────────┐ ┌──────────────┐ ┌──────────────────┐ │
│ │ Havoc │────▶│ HTTPS │────▶│ Target Network │ │
│ │ Client │ │ Redirector │ │ (Demon Agent) │ │
│ │ (Kali) │ │ (Nginx/CDN) │ │ │ │
│ └──────────┘ └──────────────┘ └──────────────────┘ │
│ │ │ │
│ │ ┌──────────────┐ │
│ └──────────▶│ Havoc │ │
│ │ Teamserver │ │
│ │ (Ubuntu VPS)│ │
│ │ Port 40056 │ │
│ └──────────────┘ │
│ │
└──────────────────────────────────────────────────────────────┘
What ships with it
7 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.
- 9d ago First seen · 321 lines · 40 tokens per session scan A ec141e88be91
building-red-team-c2-infrastructure-with-havoc is a skill published in the GitHub repository 26zl/cybersec-toolkit (54 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 2,560 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A 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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