{"id":85637,"date":"2026-05-14T15:24:08","date_gmt":"2026-05-14T15:24:08","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/85637\/"},"modified":"2026-05-14T15:24:08","modified_gmt":"2026-05-14T15:24:08","slug":"bitlocker-prolomen-pomoci-usb-flashky-a-exploitu-yellowkey","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/85637\/","title":{"rendered":"BitLocker prolomen pomoc\u00ed USB flashky a exploitu YellowKey"},"content":{"rendered":"

Nov\u00fd „zero-day exploit“ YellowKey umo\u017e\u0148uje obej\u00edt \u0161ifrov\u00e1n\u00ed BitLocker. Sta\u010d\u00ed k tomu p\u00e1r soubor\u016f na USB a trocha trp\u011blivosti, co\u017e vyvol\u00e1v\u00e1 podez\u0159en\u00ed na zadn\u00ed vr\u00e1tka.<\/p>\n

\n\t\t\t\t00:00:00\n\t\t\t<\/p>\n

\t\t\t\t\t\t\t0.8\u00d7<\/p>\n

\t\t\t\t\t\t\t1.0\u00d7<\/p>\n

\t\t\t\t\t\t\t1.25\u00d7<\/p>\n

\t\t\t\t\t\t\t1.5\u00d7<\/p>\n

\t\t\t\t\t\t\t1.75\u00d7<\/p>\n

\t\t\t\t\t\t\t2.0\u00d7<\/p>\n

\n\t\t\t\t00:00:00\n\t\t\t<\/p>\n

Bezpe\u010dnostn\u00ed komunita je v \u0161oku. V\u00fdzkumn\u00edk vystupuj\u00edc\u00ed pod p\u0159ezd\u00edvkou Nightmare-Eclipse zve\u0159ejnil 12. kv\u011btna 2026 d\u016fkaz o naprost\u00e9m selh\u00e1n\u00ed \u0161ifrov\u00e1n\u00ed BitLocker. Nov\u00fd exploit s n\u00e1zvem YellowKey toti\u017e umo\u017e\u0148uje komukoliv s fyzick\u00fdm p\u0159\u00edstupem k po\u010d\u00edta\u010di a oby\u010dejn\u00fdm USB diskem<\/a> obej\u00edt ochranu dat b\u011bhem p\u00e1r vte\u0159in.<\/p>\n

Cel\u00fd trik je a\u017e bolestiv\u011b jednoduch\u00fd a postihuje syst\u00e9my Windows 11 a Windows Server 2022\/2025. Windows 10 z\u016fst\u00e1vaj\u00ed podle v\u0161eho v bezpe\u010d\u00ed.<\/p>\n

P\u0159\u00edprava: Na USB disk sta\u010d\u00ed nahr\u00e1t slo\u017eku FsTx do specifick\u00e9ho adres\u00e1\u0159e System Volume Information.Spu\u0161t\u011bn\u00ed: Restartujete zam\u010den\u00fd po\u010d\u00edta\u010d do Recovery prost\u0159ed\u00ed (Shift + Restart) se zasunutou flashkou.Bypass: B\u011bhem startu podr\u017e\u00edte kl\u00e1vesu CTRL a BitLocker se jednodu\u0161e \u201evzd\u00e1\u201c \u2013 otev\u0159e v\u00e1m p\u0159\u00edkazov\u00fd \u0159\u00e1dek s pln\u00fdm p\u0159\u00edstupem k d\u0159\u00edve za\u0161ifrovan\u00e9mu disku C.<\/p>\n

V\u00fdzkumn\u00edk v\u011b\u0159\u00ed, \u017ee nejde o n\u00e1hodnou chybu, ale o \u00famysln\u011b vytvo\u0159en\u00e1 zadn\u00ed vr\u00e1tka (backdoor). Komponenta, kter\u00e1 tento bypass umo\u017e\u0148uje, se toti\u017e nach\u00e1z\u00ed pouze v obrazech pro obnovu syst\u00e9mu (WinRE), zat\u00edmco v b\u011b\u017en\u00e9 instalaci Windows m\u00e1 sv\u00e9 \u201ene\u0161kodn\u00e9\u201c dvoj\u010de. Pokud pou\u017e\u00edv\u00e1te Windows 11 a spol\u00e9h\u00e1te pouze na TPM modul bez dodate\u010dn\u00e9ho PINu, jsou va\u0161e data v bezpe\u010d\u00ed jen do chv\u00edle, ne\u017e k va\u0161emu stroji n\u011bkdo fyzicky zasedne.<\/p>\n

Pravideln\u00fd p\u0159ehled novinek<\/p>\n

\n\t\tV\u011bd\u011bl(a) jsi, \u017ee pravideln\u011b odes\u00edl\u00e1me p\u0159ehled nejzaj\u00edmav\u011bj\u0161\u00edch \u010dl\u00e1nk\u016f a novinek? P\u0159ihlas se k odb\u011bru mailov\u00e9ho newsletteru ve sv\u00e9m profilu.
\n\t\tV\u00edce informac\u00ed najde\u0161
\n\t\tzde<\/a>.<\/p>\n

\t\tPod\u00edvej se na
\n\t\tuk\u00e1zku<\/a>.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"Nov\u00fd „zero-day exploit“ YellowKey umo\u017e\u0148uje obej\u00edt \u0161ifrov\u00e1n\u00ed BitLocker. Sta\u010d\u00ed k tomu p\u00e1r soubor\u016f na USB a trocha trp\u011blivosti,…\n","protected":false},"author":2,"featured_media":85638,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[13],"tags":[26808,26809,246,74,73,78,75,26807,77,76,2594,10667],"class_list":["post-85637","post","type-post","status-publish","format-standard","has-post-thumbnail","category-veda-a-technika","tag-bitlocker","tag-flash","tag-microsoft","tag-science","tag-science-technology","tag-technika","tag-technology","tag-usb","tag-veda","tag-veda-a-technika","tag-windows","tag-windows-11"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116573625866435482","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/85637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=85637"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/85637\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/85638"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=85637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=85637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=85637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}