~/talk

πŸ“— Gettings PCAPs from Stingrays for $20 with Rayhunter

Talkat BSidesSF 2026 Β· on Saturday, 2026-03-21Β· at 13:25Β· AMC Theatre 02, AMC at MetreonΒ· [security, networking]
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A $20 Android Orbit hotspot running Qualcomm DIAG becomes Rayhunter, a Rust tool that dumps QMDL/pcap frames and applies heuristics (2G downgrade, null cipher offers, missing neighbor cells, identity/IMSI requests) to flag cell‑site simulators. It detects a commercial catcher in lab tests, parses RC/NAS messages, and generates downloadable captures. Field collection: 160 uploads, 23 highly suspicious, ~30 ambiguous, ~31 confirmed false positives; notable detections in Chicago, Toronto and Los Angeles. Device and PCAPs let analysts re‑scan with improved signatures.

AI-written summary Β· about

  1. 0:00Introduction
  2. 1:33What are Stingrays
  3. 8:134G Stingray vulnerabilities
  4. 13:55Introducing Ray Hunter
  5. 24:29Ray Hunter's heuristics
  6. 30:03Testing Ray Hunter in lab
  7. 33:13Field results and suspicious cases
  8. 38:30Future of Ray Hunter
  9. 42:44Conclusion and advice
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