Individual skill
offensive-data-exfiltration
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 data staging (compression, splitting, encryption). Tools: dnscat2, iodine, dns2tcp, PacketWhisper, chisel, stunnel, icmpsh, ptunnel-ng, steghide, zsteg, OpenStego. MITRE ATT&CK: T1048 (Exfiltration Over Alternative Protocol), T1041 (Exfiltration Over C2 Channel), T1567 (Exfiltration Over Web Service), T1029 (Scheduled Transfer), T1030 (Data Transfer Size Limits), T1132 (Data Encoding), T1001 (Data Obfuscation). Use when planning or executing data exfiltration during authorized red team engagements or post-exploitation.
Skills/post-exploitation/offensive-data-exfiltration/SKILL.md
Source commit a8de813edc9f66f60d44cfe42d47750e89d9930b
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 2, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 10,497
- Repository last updated
- Oct 12, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- claude-ai Repository topic
- claude-skills Repository topic
- redteam Repository topic
- redteam-tools Repository topic
- skills Repository topic
- claude-pt Repository topic
- data Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
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Read excerpt
# 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.
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