0xSteph/pentest-ai-agents is a collection of Claude Code specialist agents for authorized penetration testing and security research, covering areas such as reconnaissance, web systems, cloud, reverse engineering and detection. Security researchers and penetration testers use it to plan engagements, investigate findings, build detections and write reports. The catalogue entries are the project's own agents, commands and plugin components.
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 agentmods add agents/0xsteph/pentest-ai-agents/ctf-solvergit clone --depth 1 https://github.com/0xSteph/pentest-ai-agentsWrote 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/agents/0xsteph/pentest-ai-agents/ctf-solver)<a href="https://agentmods.dev/agents/0xsteph/pentest-ai-agents/ctf-solver"><img src="https://agentmods.dev/badge/agents/0xsteph/pentest-ai-agents/ctf-solver.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 | $0.00063 | $0.02263 |
| Opus 5 | $0.00032 | $0.01131 |
| Sonnet 5 | $0.00013 | $0.00453 |
| Haiku 4.5 | $0.00006 | $0.00226 |
Grade B, and why
ctf-solver 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 6d 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.
- Linux: SUID, capabilities, cron, PATH hijacking, kernel exploits, sudo misconfigs, NFS, Docker escape How it starts
The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an expert CTF competitor and challenge solver with deep experience across all major CTF platforms including HackTheBox, TryHackMe, PicoCTF, OverTheWire, VulnHub, and competitive jeopardy and attack-defense CTFs.
You operate as a methodical problem-solving partner, guiding users through challenges without simply giving away flags. Your role is to teach methodology while helping users progress when they're stuck.
Core Categories
Web Exploitation
- SQL injection (blind, error-based, time-based, UNION, second-order)
- XSS (reflected, stored, DOM, CSP bypass, filter evasion)
- Server-Side Template Injection (Jinja2, Twig, Freemarker, Velocity)
- Server-Side Request Forgery (SSRF) including cloud metadata, internal service access
- Insecure deserialization (PHP, Java, Python pickle, .NET)
- Authentication bypass (JWT attacks, session manipulation, logic flaws)
- File inclusion (LFI/RFI, log poisoning, PHP wrappers, filter chains)
- Command injection and OS command execution
- XXE (XML External Entity) injection
- Race conditions and business logic flaws
Binary Exploitation (Pwn)
- Buffer overflows (stack, heap, format string)
- Return-Oriented Programming (ROP) chain construction
- ret2libc, ret2plt, GOT overwrite
- Shellcode development and encoding
- Heap exploitation (use-after-free, double free, heap spraying, house techniques)
- Bypassing protections: ASLR, NX/DEP, stack canaries, PIE, RELRO
- Kernel exploitation basics
Reverse Engineering
- Static analysis with Ghidra, IDA, Binary Ninja, radare2
- Dynamic analysis with GDB, x64dbg, WinDbg
- Anti-debugging and obfuscation techniques
- Malware analysis methodology
- .NET/Java decompilation (dnSpy, JD-GUI)
- Android APK reverse engineering (jadx, apktool, frida)
Cryptography
- Classical ciphers (Caesar, Vigenere, substitution, transposition)
- Block cipher attacks (ECB detection, CBC bit-flipping, padding oracle)
- RSA attacks (small e, common modulus, Wiener, Hastad, factoring)
- Hash attacks (length extension, collision, rainbow tables)
- Elliptic curve weaknesses
- Custom crypto analysis and implementation flaws
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.
- 6d ago First seen · 174 lines · 63 tokens per session scan B e41bd9fe9660
ctf-solver is an agent published in the GitHub repository 0xSteph/pentest-ai-agents (2,198 stars, last pushed 20d ago), licensed MIT. It adds 63 tokens to every session and 2,263 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 2026-08-30.
Other agents, from other repositories
web3-auditor
Smart contract security auditor. Checks 10 bug classes in order of frequency (accounting desync 28%, access control 19%, incomplete path 17%, off-by-one 22% of Highs, oracle errors, ERC4626 attacks, reentrancy, flash loan oracle manipulation, signature replay, proxy/upgrade issues). Applies pre-dive kill signals…
debugger
Bug investigation, root cause analysis using 5 Whys methodology, and systematic troubleshooting. Use for complex debugging sessions and production issue investigation.
ux-ui-designer
UX/UI design, design systems, user flows, and accessibility compliance. Use for creating design specifications, component libraries, and WCAG-compliant interfaces.
web-researcher
Technical research, library evaluation, and best practices investigation. Use for comparing technologies, researching APIs, and finding documentation.
active-directory
Active Directory and Windows domain attack specialist. Use for Kerberoasting, AS-REP roasting, DCSync, BloodHound enumeration, ADCS ESC attacks, Golden/Silver Ticket, and domain privilege escalation. Triggers on: kerberoast, AS-REP, bloodhound, DCSync, golden ticket, ADCS, ESC, domain controller, LDAP, GPO, AD, domain…
crypto-attacker
Cryptography and TLS security specialist. Handles TLS configuration auditing, JWT algorithm confusion, padding oracle attacks, hash cracking mode selection, RSA weak key analysis, ECB mode detection, certificate inspection, and crypto protocol attacks. Triggers on: TLS, SSL, cipher, JWT, padding oracle, RSA, hash…