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KAPLAN — Stealthy Bulk Fetching Over Tor for Red Team Ops


This content originally appeared on DEV Community and was authored by KL3FT3Z

A multithreaded, identity-rotating, resilient file fetcher built for covert red team reconnaissance and data exfiltration over Tor.

🔥 Written with OPSEC in mind • By toxy4ny • For Hackers Who Like To Stay Unseen

🕵‍♂ Why This Tool Exists

When you’re operating in hostile environments—whether during internal pentests, adversary simulations, or covert intel gathering—you can’t afford to leave traces. Every HTTP request is a potential fingerprint. Every static IP is a liability.

Enter KAPLAN (tdd): a Python utility engineered for red teams who need to download sensitive documents, dumps, configs, or artifacts—anonymously, resiliently, and without revealing their true origin.

Unlike generic downloaders, tdd:

  • Routes all traffic over Tor using SOCKS5.
  • Rotates Tor circuits before every download to avoid linkability.
  • Handles failures gracefully with exponential retry logic.
  • Supports parallelized bulk fetching without breaking operational security.
  • Leaves zero forensic residue beyond Tor traffic.

⚠ Note: This tool is for authorized security research and legitimate red team engagements only. Misuse is illegal.

🧰 Key Features

Feature Red Team Value
Automatic Tor Circuit Rotation Each file download originates from a fresh exit node, preventing correlation between requests.
Parallelized Downloads (Threaded) Speed meets stealth—download dozens of files concurrently without sacrificing anonymity.
Resilient Retry Logic Handles timeouts, transient errors, and flaky onion services with configurable retries.
OPSEC-Aware Logging All activity is timestamped, structured, and saved locally—no external telemetry.
Filename Extraction & Conflict Avoidance Automatically parses Content-Disposition, falls back to URL-derived names, and prevents overwrites.
Tor Connectivity Validation Before anything runs, tdd verifies your traffic is actually routed through Tor (via check.torproject.org).

🛠 How It Works

1. Setup & Validation

  • Starts by checking if Tor is properly routing traffic.
  • If not, it warns you—because there’s nothing worse than thinking you’re anonymous when you’re not.

2. Input Handling

  • Reads URLs from a simple urls.txt file: 
  http://example.com/confidential.pdf
  http://example.com/creds.xlsx
  https://example.com/api/logs.zip
  • Ignores comments (#) and invalid lines.

3. Download Execution

For each URL:

  • 🔄 Rotates Tor identity (requests a new circuit via NEWNYM).
  • 📥 Fetches the file via requests over socks5h:// (ensures DNS resolution happens over Tor).
  • 📂 Saves with smart naming to avoid collisions.
  • 📊 Logs success/failure with full context.

4. Execution Modes

  • parallel (default): Uses ThreadPoolExecutor for speed.
  • sequential: Slower, but useful for resource-limited or highly sensitive ops.

💻 Quick Start

Prerequisites

  • Tor running with ControlPort 9051 and SOCKS5 at 9050 (default in most configs).
  • Python 3.7+
  • Install dependencies: 
  pip install requests stem

Usage

  1. Create urls.txt with your target files: 
   http://example.com/some-report.pdf
   http://example.com/config.bak
  1. Run: 
   python3 kaplan.py
  1. Check downloads/ and logs/ for results.

✅ Pro Tip: Pair this with Athena OS (our preferred red team distro, successor to BlackArch) for a hardened, opsec-ready environment.

🔐 OPSEC Notes

  • Always run inside a VM or isolated environment.
  • Ensure Tor is properly configured—no leaks!
  • Consider delaying requests (time.sleep) in sequential mode to mimic human behavior.
  • Never download directly onto your host machine—use encrypted, disposable storage.

🤝 Collaboration & Contribution

This tool is actively used in real-world engagements by the Red Team at Hackteam.Red.

We welcome bug reports, feature requests, and OPSEC improvements from fellow security researchers.

🔗 Contact: b0x@hackteam.red

💰 Support the Mission

If this tool helped you in an engagement, consider supporting our work:

Bitcoin: bc1qhamvfqpunpjyxjv0cyxj4svl7zlg9u0y4ckcn9

License: MIT. For red team use only. Not for skids. Not for blue teams (unless you’re hunting us) :)))).

Author: toxy4ny • Lead of Red Team Operators • Hackteam.Red


This content originally appeared on DEV Community and was authored by KL3FT3Z