{"id":38822,"date":"2019-10-31T22:26:11","date_gmt":"2019-10-31T19:26:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux\/"},"modified":"2019-10-31T22:26:11","modified_gmt":"2019-10-31T19:26:11","slug":"reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux","title":{"rendered":"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/70434b41e923b3b46bcdff1ab7e03937.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nV tomto \u010dl\u00e1nku vyrie\u0161ime 25. \u00falohu z webu <noindex><a rel=\"nofollow\" href=\"https:\/\/pwnable.kr\/index.php\">pwnable.kr<\/a><\/noindex>.<\/p>\n<p><b class=\"spoiler_title\">Organiza\u010dn\u00e9 inform\u00e1cie<\/b>\u0160peci\u00e1lne pre t\u00fdch, ktor\u00ed chc\u00fa objavova\u0165 nov\u00e9 inform\u00e1cie a rozv\u00edja\u0165 sa v akejko\u013evek oblasti informa\u010dnej a po\u010d\u00edta\u010dovej bezpe\u010dnosti, budem p\u00edsa\u0165 a rozpr\u00e1va\u0165 o nasleduj\u00facich kateg\u00f3ri\u00e1ch:<\/p>\n<ul>\n<li>PWN;<\/li>\n<li>kryptografia (Crypto);<\/li>\n<li>sie\u0165ov\u00e9 technol\u00f3gie (Network);<\/li>\n<li>reverzn\u00e9 in\u017einierstvo (Reverse Engineering);<\/li>\n<li>steganografia (Stegano);<\/li>\n<li>h\u013eadanie a vyu\u017e\u00edvanie WEB zranite\u013enost\u00ed.<\/li>\n<\/ul>\n<p>\nNavy\u0161e sa podel\u00edm o svoje sk\u00fasenosti v oblasti po\u010d\u00edta\u010dovej kriminalistiky, anal\u00fdze malv\u00e9ru a firmv\u00e9ru, \u00fatokoch na bezdr\u00f4tov\u00e9 siete a lok\u00e1lne v\u00fdpo\u010dtov\u00e9 siete, vykon\u00e1van\u00ed penetra\u010dn\u00fdch testov a p\u00edsan\u00ed exploitov.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nAby ste sa mohli dozveda\u0165 o nov\u00fdch \u010dl\u00e1nkoch, softv\u00e9ri a in\u00fdch inform\u00e1ci\u00e1ch, vytvoril som <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/RalfHackerChannel\">kan\u00e1l na Telegrame<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/RalfHackerPublicChat\">skupinu na diskusiu o ak\u00fdchko\u013evek ot\u00e1zkach<\/a><\/noindex> v oblasti IKT. Takisto va\u0161e osobn\u00e9 po\u017eiadavky, ot\u00e1zky, n\u00e1vrhy a odpor\u00fa\u010dania <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/hackerralf8\">zv\u00e1\u017eim osobne a odpoviem v\u0161etk\u00fdm<\/a><\/noindex>.<\/p>\n<p>V\u0161etky inform\u00e1cie s\u00fa poskytovan\u00e9 v\u00fdlu\u010dne na vzdel\u00e1vacie \u00fa\u010dely. Autor tohto dokumentu nenesie \u017eiadnu zodpovednos\u0165 za ak\u00e9ko\u013evek \u0161kody sp\u00f4soben\u00e9 komuko\u013evek v d\u00f4sledku vyu\u017e\u00edvania poznatkov a met\u00f3d z\u00edskan\u00fdch \u0161t\u00fadiom tohto dokumentu.<\/p>\n<h2>Rie\u0161enie \u00falohy otp<\/h2>\n<p>\nPokra\u010dujeme druhou \u010das\u0165ou. Povieme hne\u010f, \u017ee je n\u00e1ro\u010dnej\u0161ia ako prv\u00e1, ale tentoraz n\u00e1m nezasielaj\u00fa zdrojov\u00fd k\u00f3d programu. Nezab\u00fadajme na diskusiu tu (https:\/\/t.me\/RalfHackerPublicChat) a tu (https:\/\/t.me\/RalfHackerChannel). Za\u010dneme.<\/p>\n<p>Klikneme na ikonu s popisom otp. Dostaneme adresu a port na pripojenie.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/fec98a1c755c36ba1a7117bfc5154611.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPripoj\u00edme sa a popozer\u00e1me sa na serveri.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/71983f5701fe2b1366cebfb0d2d57f74.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nFlag, ktor\u00fd nem\u00f4\u017eeme pre\u010d\u00edta\u0165, program a jeho zdrojov\u00fd k\u00f3d. Pozrime sa na zdrojov\u00fd k\u00f3d.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/63e409cd939f41db29ee5c1edfa107a0.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nRozoberieme ho. Program prij\u00edma ako argument heslo.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/5eb6bccb7ed4b82fdd01e24854c2c953.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u010ealej sa do premennej otp ulo\u017eia n\u00e1hodn\u00e9 16 bajty.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/c1420a16c9721a8c87fb86277674f0f2.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nV prie\u010dinku tmp sa vytvor\u00ed s\u00fabor so \u0441\u043b\u0443\u0447\u0430\u0439n\u00fdm n\u00e1zvom (prv\u00fdch 8 bajtov otp) a do neho sa zap\u00ed\u0161u n\u00e1hodn\u00e9 8 bajtov (druh\u00fdch 8 bajtov otp).<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/d6fcc612f6cddbff338fff0aaf9b73a1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nJe nejak\u00fdm sp\u00f4sobom pre\u010d\u00edtan\u00e1 hodnota z vytvoren\u00e9ho s\u00faboru a porovn\u00e1va sa s zadan\u00fdm heslom.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/42302a748b7cd57a6337be00eab2c47b.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTu sa nach\u00e1dza zranite\u013enos\u0165. T\u00fdka sa medzi\u010dasu ulo\u017eenia generovan\u00e9ho \u010d\u00edsla do s\u00faboru. M\u00f4\u017eeme obmedzi\u0165 ve\u013ekos\u0165 s\u00faboru, napr\u00edklad na 0, tak\u017ee pri z\u00e1pise a \u010d\u00edtan\u00ed s heslom sa bude porovn\u00e1va\u0165 0. M\u00f4\u017eeme to urobi\u0165 takto.<\/p>\n<pre><code class=\"bash\"># ulimit -f 0<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/3af83c20d1de7435b0f40a36c8187ff0.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTeraz spust\u00edme program.<\/p>\n<p><img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/a289bd59a22aa495fe6407c3c8ff0416.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZ\u00edskavame chybu. Ni\u010d sa nedeje, d\u00e1 sa spracova\u0165 pomocou toho ist\u00e9ho Pythona.<\/p>\n<pre><code class=\"python\">python -c \"import os, signal; signal.signal(signal.SIGXFSZ, signal.SIG_IGN); os.system('.\\\/otp 0')\" <\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie r\u00e1mca s\u00faboru v Linuxe.\" src=\"\/wp-content\/uploads\/2019\/10\/b8513f020879d5e5ee957e1bc137b61a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZ\u00edskavame vlajku a jednoduch\u00fdch 100 bodov. A pokra\u010dujeme: v nasleduj\u00facom \u010dl\u00e1nku sa dotkneme Webu. M\u00f4\u017eete sa k n\u00e1m prida\u0165 na <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/RalfHackerChannel\">Telegram<\/a><\/noindex>.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/471042\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0434\u0430\u043d\u043d\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u0440\u0435\u0448\u0438\u043c 25-\u0435 \u0437\u0430\u0434\u0430\u043d\u0438\u0435 \u0441 \u0441\u0430\u0439\u0442\u0430 pwnable.kr. \u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0434\u043b\u044f \u0442\u0435\u0445, \u043a\u0442\u043e \u0445\u043e\u0447\u0435\u0442 \u0443\u0437\u043d\u0430\u0432\u0430\u0442\u044c \u0447\u0442\u043e-\u0442\u043e \u043d\u043e\u0432\u043e\u0435 \u0438 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u043b\u044e\u0431\u043e\u0439 \u0438\u0437 \u0441\u0444\u0435\u0440 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0438 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438, \u044f \u0431\u0443\u0434\u0443 \u043f\u0438\u0441\u0430\u0442\u044c \u0438 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u043e \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0445 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u044f\u0445: PWN; \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u044f (Crypto); c\u0435\u0442\u0435\u0432\u044b\u0435 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 (Network); \u0440\u0435\u0432\u0435\u0440\u0441 (Reverse Engineering); \u0441\u0442\u0435\u0433\u0430\u043d\u043e\u0433\u0440\u0430\u0444\u0438\u044f (Stegano); \u043f\u043e\u0438\u0441\u043a \u0438 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f WEB-\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412\u0434\u043e\u0431\u0430\u0432\u043e\u043a \u043a \u044d\u0442\u043e\u043c\u0443 \u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":29120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-38822","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"sk_SK\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0420\u0435\u0448\u0435\u043d\u0438\u0435 \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u0441 pwnable.kr 25 \u2014 otp. \u041e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u0440\u0430\u043c\u0435\u0440\u0430 \u0444\u0430\u0439\u043b\u0430 \u0432 Linux | ProHoster\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-10-31T19:26:11+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2019-10-31T19:26:11+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Rie\u0161enie \u00falohy z pwnable.kr 25 \u2014 otp. Obmedzenie ve\u013ekosti s\u00faboru v Linuxe | ProHoster","description":"","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0420\u0435\u0448\u0435\u043d\u0438\u0435 \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u0441 pwnable.kr 25 \u2014 otp. \u041e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u0440\u0430\u043c\u0435\u0440\u0430 \u0444\u0430\u0439\u043b\u0430 \u0432 Linux | ProHoster","og:url":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/reshenie-zadaniya-s-pwnable-kr-25-otp-ogranichenie-ramera-fajla-v-linux","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T19:26:11+00:00","article:modified_time":"2019-10-31T19:26:11+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"38822","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-23 23:33:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 01:01:37","updated":"2026-01-23 23:33:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/38822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=38822"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/38822\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media\/29120"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=38822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=38822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=38822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}