~/talk

Decentralized Malware on The Blockchain

Talkat Black Hat Asia 2015 · 2015-03-24..03-27· [web3, cryptography]
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Claim: arbitrary binaries can be stored in transactions and reconstructed and executed by a tiny loader that pulls wallet IDs from a block, concatenates their data and runs it in memory — demonstrator fetches a metasploit shellcode, spawns Notepad and succeeds. Implementation uses standard Bitcoin transactions, paid about 0.002 BTC per upload, waits ~11 minutes for confirmation, and can spread payload across many outputs within the 1MB block limit. Blockchain size grows (≈7GB to ≈25GB in a year), so permanent data bloat and encrypted payload marketplaces are practical threats.

AI-written summary · about

  1. 0:00Intro
  2. 1:25What is Interpol
  3. 3:33What do you do
  4. 4:47APT Research
  5. 5:50APT Research Projects
  6. 8:10Crypto Universe
  7. 8:38Vulnerability Disclosure
  8. 9:39What is Blockchain
  9. 10:13The beauty of Blockchain
  10. 11:12Blockchain explained
  11. 16:25Blockchain examples
  12. 20:13Data on the blockchain
  13. 25:05Demo
  14. 33:35Conclusions
  15. 35:31Solutions
  16. 38:31Interpol
  17. 39:19Pollution
  18. 41:58Twitterbased model
  19. 45:32Other questions
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