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NGinx Warhead

Sergey Belov. NGinx Warhead. whoami. Pentester in Digital Security / ERPScan ; Writer (habrahabr.ru, “ Xakep ”); CTF Player; Bug bounty member (Google, Yandex ); bugscollector.com creator. intro. Very easy 0$ Not mentioned in the wild. Part 1/3. NGinx – reverse proxy.

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NGinx Warhead

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  1. Sergey Belov NGinx Warhead

  2. whoami • Pentester in Digital Security / ERPScan; • Writer (habrahabr.ru, “Xakep”); • CTF Player; • Bug bounty member (Google, Yandex); • bugscollector.com creator.

  3. intro • Very easy • 0$ • Not mentioned in the wild

  4. Part 1/3 NGinx – reverse proxy

  5. NGinx – reverse proxy php-fpm Client Nginx Apache

  6. NGinx – reverse proxy php-fpm attacker.com Client Nginx Apache vuln.com ??? http server

  7. NGinx – reverse proxy Step 1 location / { proxy_pass http://vuln.com; proxy_set_header X-Real-IP $remote_addr; } }

  8. NGinx – reverse proxy Step 2 • proxy_set_header Host “vuln.com"; • sub_filter ‘vuln.com' ‘attacker.com'; • sub_filter_once off;

  9. NGinx – reverse proxy

  10. Part 2/3 Phishing

  11. Phishing NGinx – tool for MitM/phishing? • + Identical design • + Fully functional working • + Logging all data (POST/GET) • + Add custom JS/HTML • - Another domain (DNS poising / router hacking, malware, evil apnconfige.t.c.)

  12. Phishing Pentest • Random exploit’s? • Change response data (rights of social networks apps) • Change apps swf-> java (exploit) • ???

  13. Part 3/3 DNS rebinding

  14. DNS rebinding • -Another domain • - Very unstable • + Can attack internal resources

  15. DNS rebinding Internal, not external!

  16. DNS rebinding C:\Users\BeLove>ping www.ya.ru Обмен пакетами с ya.ru [87.250.250.203] с 32 байтами данных

  17. DNS rebinding • Remove it from: • Pentester’sreports • Most famous security scanners

  18. Thanks! demo: http://zn.sergeybelove.ru http://twitter.com/sergeybelove

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