{"id":104673,"date":"2022-07-20T09:36:43","date_gmt":"2022-07-20T07:36:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel"},"modified":"2022-07-20T09:36:43","modified_gmt":"2022-07-20T07:36:43","slug":"opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel","title":{"rendered":"Byl zve\u0159ejn\u011bn n\u00e1stroj pro de\u0161ifrov\u00e1n\u00ed mikrok\u00f3du Intel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Skupina bezpe\u010dnostn\u00edch v\u00fdzkumn\u00edk\u016f z t\u00fdmu uCode zve\u0159ejnila zdrojov\u00e9 texty pro de\u0161ifrov\u00e1n\u00ed mikrok\u00f3du Intel. K extrakci \u0161ifrovan\u00e9ho mikrok\u00f3du m\u016f\u017ee b\u00fdt pou\u017eita technika Red Unlock, kterou vyvinuli ti stejn\u00ed v\u00fdzkumn\u00edci v roce 2020. Navrhovan\u00e1 mo\u017enost de\u0161ifrov\u00e1n\u00ed mikrok\u00f3du umo\u017e\u0148uje zkoumat vnit\u0159n\u00ed strukturu mikrok\u00f3du a metody realizace strojov\u00fdch instrukc\u00ed x86. Nav\u00edc v\u00fdzkumn\u00edci obnovili form\u00e1t aktualizac\u00ed s mikrok\u00f3dem, \u0161ifrovac\u00ed algoritmus a kl\u00ed\u010d pou\u017eit\u00fd k ochran\u011b mikrok\u00f3du (RC4). <\/p>\n

Pro ur\u010den\u00ed pou\u017eit\u00e9ho \u0161ifrovac\u00edho kl\u00ed\u010de byla vyu\u017eita zranitelnost v Intel TXE, jej\u00ed\u017e prost\u0159ednictv\u00edm se poda\u0159ilo aktivovat nedokumentovan\u00fd ladic\u00ed re\u017eim s k\u00f3dov\u00fdm n\u00e1zvem \u201eRed Unlock\u201c. V ladic\u00edm re\u017eimu bylo mo\u017en\u00e9 p\u0159\u00edmo z CPU na\u010d\u00edst dump s b\u011b\u017e\u00edc\u00edm mikrok\u00f3dem a extrahovat z n\u011bj algoritmus a kl\u00ed\u010de. <\/p>\n

N\u00e1stroj umo\u017e\u0148uje pouze de\u0161ifrovat mikrok\u00f3d, ale ned\u00e1v\u00e1 mo\u017enost jeho zm\u011bny, proto\u017ee integrita mikrok\u00f3du je dodate\u010dn\u011b kontrolov\u00e1na pomoc\u00ed digit\u00e1ln\u00edho podpisu na z\u00e1klad\u011b algoritmu RSA. Metoda je aplikovateln\u00e1 na procesory Intel rodiny Gemini Lake zalo\u017een\u00e9 na mikroarchitektu\u0159e Goldmont Plus a Intel Apollo Lake zalo\u017een\u00e9 na mikroarchitektu\u0159e Goldmont.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438\u0437 \u043a\u043e\u043c\u0430\u043d\u0434\u044b uCode \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0434\u043b\u044f \u0434\u0435\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 Intel. \u0414\u043b\u044f \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u044f \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0442\u0435\u0445\u043d\u0438\u043a\u0430 Red Unlock, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u0430\u044f \u0442\u0435\u043c\u0438 \u0436\u0435 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u0432 2020 \u0433\u043e\u0434\u0443. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u044c \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u044e\u044e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u0438 \u043c\u0435\u0442\u043e\u0434\u044b \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439 \u043c\u0430\u0448\u0438\u043d\u043d\u044b\u0445 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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104673","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Zve\u0159ejn\u011bn n\u00e1stroj pro de\u0161ifrov\u00e1n\u00ed mikrok\u00f3du Intel | ProHoster","description":"Skupina bezpe\u010dnostn\u00edch v\u00fdzkumn\u00edk\u016f z t\u00fdmu uCode zve\u0159ejnila zdrojov\u00e9 texty pro de\u0161ifrov\u00e1n\u00ed mikrok\u00f3du 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