{"id":76851,"date":"2020-04-05T07:42:20","date_gmt":"2020-04-05T05:42:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/rezultaty-analiza-bekdorov-v-prilozheniyah-dlya-android"},"modified":"2020-04-05T07:42:20","modified_gmt":"2020-04-05T05:42:20","slug":"rezultaty-analiza-bekdorov-v-prilozheniyah-dlya-android","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/rezultaty-analiza-bekdorov-v-prilozheniyah-dlya-android","title":{"rendered":"Resultados da an\u00e1lise de backdoors em aplicativos para Android.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Pesquisadores do Centro Helmholtz de Seguran\u00e7a da Informa\u00e7\u00e3o (CISPA), da Universidade Estadual de Ohio e da Universidade de Nova York <noindex><a rel=\"nofollow\" href=\"https:\/\/cispa.saarland\/2020\/04\/03\/hidden-functions-make-mobile-phone-apps-vulnerable-to-hackers.html\">realizaram<\/a><\/noindex> estudaram a funcionalidade oculta em aplicativos da plataforma Android. An\u00e1lise de 100 mil aplicativos m\u00f3veis do cat\u00e1logo Google Play, 20 mil de um cat\u00e1logo alternativo (Baidu) e 30 mil aplicativos pr\u00e9-instalados em v\u00e1rios smartphones, selecionados a partir de 1000 firmwares do SamMobile, <noindex><a rel=\"nofollow\" href=\"https:\/\/panda.moyix.net\/~moyix\/papers\/inputscope_oakland20.pdf\">mostrou<\/a><\/noindex>, onde 12706 (8,5%) aplicativos cont\u00eam funcionalidades ocultas para o usu\u00e1rio, mas ativadas por sequ\u00eancias especiais que podem ser classificadas como backdoors. <\/p>\n<p>Em particular, 7584 aplicativos inclu\u00edam chaves de acesso secretas embutidas, 501 \u2014 senhas mestres embutidas e 6013 \u2014 comandos ocultos. Aplicativos problem\u00e1ticos est\u00e3o presentes em todas as fontes de software analisadas \u2014 em termos percentuais, backdoors foram identificados em 6,86% (6860) dos programas estudados do Google Play, 5,32% (1064) do cat\u00e1logo alternativo e 15,96% (4788) da lista de aplicativos pr\u00e9-instalados. Os backdoors identificados permitem que qualquer pessoa que conhe\u00e7a as chaves, senhas de ativa\u00e7\u00e3o e sequ\u00eancias de chamada de comandos tenha acesso ao aplicativo e a todos os dados relacionados. <\/p>\n<p>Por exemplo, em um aplicativo de streaming de partidas esportivas, com 5 milh\u00f5es de instala\u00e7\u00f5es, foi encontrado uma chave incorporada para acessar a interface de administrador, permitindo alterar as configura\u00e7\u00f5es do aplicativo e obter acesso a funcionalidades adicionais. Em um aplicativo de bloqueio de tela, tamb\u00e9m com 5 milh\u00f5es de instala\u00e7\u00f5es, foi encontrada uma chave de acesso que permite redefinir a senha definida pelo usu\u00e1rio para bloquear o dispositivo. Em um aplicativo de tradu\u00e7\u00e3o, com 1 milh\u00e3o de instala\u00e7\u00f5es, existe uma chave que permite fazer compras dentro do aplicativo e atualizar o programa para a vers\u00e3o pro sem pagamento real.<\/p>\n<p> No programa de controle remoto de dispositivos perdidos, que conta com 10 milh\u00f5es de instala\u00e7\u00f5es, foi descoberta uma master password que permite desbloquear a prote\u00e7\u00e3o definida pelo usu\u00e1rio em caso de perda do aparelho. No aplicativo de anota\u00e7\u00f5es, foi encontrada uma master password que possibilita desbloquear notas secretas. Muitos aplicativos tamb\u00e9m apresentaram modos de depura\u00e7\u00e3o que abrem acesso a funcionalidades de baixo n\u00edvel; por exemplo, em um aplicativo de compras, ao inserir uma determinada combina\u00e7\u00e3o, um servidor proxy era ativado, e em um programa de aprendizado, havia a possibilidade de contornar a realiza\u00e7\u00e3o de testes.<\/p>\n<p>Al\u00e9m de backdoors, 4028 (2,7%) aplicativos apresentaram listas negras que s\u00e3o utilizadas para censurar as informa\u00e7\u00f5es provenientes dos usu\u00e1rios. As listas negras cont\u00eam um conjunto de palavras proibidas de serem mencionadas, incluindo nomes de partidos pol\u00edticos e pol\u00edticos, al\u00e9m de frases padr\u00e3o que s\u00e3o usadas para intimidar e discriminar determinados grupos da popula\u00e7\u00e3o. As listas negras foram identificadas em 1,98% dos aplicativos analisados da Google Play, em 4,46% do cat\u00e1logo alternativo e em 3,87% da lista de aplicativos pr\u00e9-instalados.<\/p>\n<p>Para a realiza\u00e7\u00e3o da an\u00e1lise, foi utilizada a ferramenta desenvolvida pelos pesquisadores, chamada InputScope, cujo c\u00f3digo ser\u00e1 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/OSUSecLab\/InputScope\">foi publicado<\/a><\/noindex> dispon\u00edvel no GitHub (anteriormente, os pesquisadores j\u00e1 publicaram um analisador est\u00e1tico <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/OSUSecLab\/LeakScope\">LeakScope<\/a><\/noindex>, que detecta automaticamente vazamentos de informa\u00e7\u00f5es em aplicativos).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52677\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0426\u0435\u043d\u0442\u0440\u0430 \u0413\u0435\u043b\u044c\u043c\u0433\u043e\u043b\u044c\u0446\u0430 \u043f\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (CISPA), \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0448\u0442\u0430\u0442\u0430 \u041e\u0433\u0430\u0439\u043e \u0438 \u041d\u044c\u044e-\u0419\u043e\u0440\u043a\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u043f\u0440\u043e\u0432\u0435\u043b\u0438 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u043a\u0440\u044b\u0442\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0432 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445 \u0434\u043b\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Android. \u0410\u043d\u0430\u043b\u0438\u0437 100 \u0442\u044b\u0441\u044f\u0447 \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0438\u0437 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430 Google Play, 20 \u0442\u044b\u0441\u044f\u0447 \u0438\u0437 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430 (Baidu) \u0438 30 \u0442\u044b\u0441\u044f\u0447 \u043f\u0440\u0435\u0434\u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u043d\u0430 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0441\u043c\u0430\u0440\u0442\u0444\u043e\u043d\u044b \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0445 \u0438\u0437 1000 \u043f\u0440\u043e\u0448\u0438\u0432\u043e\u043a \u0441 SamMobile, \u043f\u043e\u043a\u0430\u0437\u0430\u043b, \u0447\u0442\u043e 12706 (8.5%) [&hellip;]<\/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-76851","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0426\u0435\u043d\u0442\u0440\u0430 \u0413\u0435\u043b\u044c\u043c\u0433\u043e\u043b\u044c\u0446\u0430 \u043f\u043e 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