{"id":3083,"date":"2024-11-06T00:15:12","date_gmt":"2024-11-05T21:15:12","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/"},"modified":"2024-11-06T00:15:12","modified_gmt":"2024-11-05T21:15:12","slug":"kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/","title":{"rendered":"Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi"},"content":{"rendered":"<p>Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi<\/p>\n<p>Siber g\u00fcvenlik d\u00fcnyas\u0131nda, kimlik bilgileri d\u00f6k\u00fcm\u00fc, sald\u0131rganlar\u0131n hassas verileri ele ge\u00e7irmek i\u00e7in s\u0131kl\u0131kla kulland\u0131\u011f\u0131 yayg\u0131n bir tehdittir. Bu sald\u0131r\u0131lar, kurulu\u015flar i\u00e7in ciddi sonu\u00e7lara yol a\u00e7abilir; hesaplar\u0131n ele ge\u00e7irilmesi, veri s\u0131z\u0131nt\u0131lar\u0131 ve itibar kayb\u0131 bunlardan sadece birka\u00e7\u0131d\u0131r. Bu makalede, kimlik bilgileri d\u00f6k\u00fcm\u00fcne odaklanaca\u011f\u0131z ve \u00f6zellikle NTLM karma de\u011ferlerinin nas\u0131l s\u0131zd\u0131r\u0131ld\u0131\u011f\u0131n\u0131 ve bu sald\u0131r\u0131lara kar\u015f\u0131 nas\u0131l \u00f6nlem al\u0131naca\u011f\u0131n\u0131 inceleyece\u011fiz.<\/p>\n<h2>Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Karma De\u011ferleri Nas\u0131l S\u0131zd\u0131r\u0131l\u0131yor?<\/h2>\n<p>Kimlik bilgileri d\u00f6k\u00fcm\u00fc, sald\u0131rganlar\u0131n a\u011f trafi\u011fini yakalamak ve yetkisiz kullan\u0131c\u0131lar\u0131n kimlik bilgilerini ele ge\u00e7irmek i\u00e7in kulland\u0131klar\u0131 bir tekniktir. Bu teknik, NTLM karma de\u011ferlerinin ele ge\u00e7irilmesini i\u00e7erir ve bu da sald\u0131rganlar\u0131n kullan\u0131c\u0131 \u015fifrelerini elde etmelerini sa\u011flayabilir. NTLM, Microsoft taraf\u0131ndan geli\u015ftirilen bir kimlik do\u011frulama protokol\u00fcd\u00fcr ve karma de\u011ferlerin s\u0131zd\u0131r\u0131lmas\u0131na kar\u015f\u0131 savunmas\u0131zd\u0131r.<\/p>\n<p>NTLM kimlik do\u011frulama s\u00fcreci, kullan\u0131c\u0131n\u0131n kimlik bilgilerini do\u011frudan g\u00f6ndermek yerine, sunucuya iletilen bir karma de\u011fere dayan\u0131r. Bu karma de\u011fer, kullan\u0131c\u0131 ad\u0131 ve \u015fifrenin bir kombinasyonunu kullanarak olu\u015fturulur. Sald\u0131rganlar, a\u011f trafi\u011fini yakalayarak bu karma de\u011ferleri ele ge\u00e7irebilir. Daha sonra, ele ge\u00e7irilen karma de\u011ferleri kullanarak kullan\u0131c\u0131n\u0131n \u015fifresini elde etmek i\u00e7in bir brute-force sald\u0131r\u0131s\u0131 ba\u015flatabilirler.<\/p>\n<p>NTLM karma de\u011ferleri, genellikle HTTP ve SMB protokolleri arac\u0131l\u0131\u011f\u0131yla ele ge\u00e7irilir. Sald\u0131rganlar, HTTP trafi\u011fini yakalamak i\u00e7in bir proxy sunucusu kullanabilir veya SMB trafi\u011fini yakalamak i\u00e7in a\u011fda bir sald\u0131r\u0131 arac\u0131 kullanabilirler. <\/p>\n<h2>NTLM Karma De\u011ferlerine Kar\u015f\u0131 \u00d6nlemler<\/h2>\n<p>NTLM karma de\u011ferleri, sald\u0131rganlar taraf\u0131ndan ele ge\u00e7irilebilece\u011finden, bu sald\u0131r\u0131lara kar\u015f\u0131 \u00f6nlem almak \u00f6nemlidir. NTLM karma de\u011ferlerini ele ge\u00e7irmeye kar\u015f\u0131 etkili birka\u00e7 \u00f6nlem \u015funlard\u0131r:<\/p>\n<ul>\n<li><b>NTLM kimlik do\u011frulamas\u0131n\u0131n devre d\u0131\u015f\u0131 b\u0131rak\u0131lmas\u0131:<\/b> Bu, en etkili \u00e7\u00f6z\u00fcmd\u00fcr. NTLM kimlik do\u011frulamas\u0131 devre d\u0131\u015f\u0131 b\u0131rak\u0131ld\u0131\u011f\u0131nda, sald\u0131rganlar karma de\u011ferleri ele ge\u00e7iremez. <\/li>\n<li><b>Modern kimlik do\u011frulama protokollerinin kullan\u0131lmas\u0131:<\/b> Kerberos gibi daha g\u00fcvenli kimlik do\u011frulama protokolleri, NTLM&#8217;nin aksine sald\u0131rganlar taraf\u0131ndan ele ge\u00e7irilemez. <\/li>\n<li><b>\u00c7ok fakt\u00f6rl\u00fc kimlik do\u011frulama (MFA) kullan\u0131m\u0131:<\/b> MFA, kullan\u0131c\u0131n\u0131n kimli\u011fini do\u011frulamak i\u00e7in ek bir katman ekleyerek hesaplar\u0131 ele ge\u00e7irmeyi zorla\u015ft\u0131r\u0131r. <\/li>\n<li><b>G\u00fc\u00e7l\u00fc \u015fifrelerin kullan\u0131m\u0131:<\/b> G\u00fc\u00e7l\u00fc \u015fifreler kullanmak, NTLM karma de\u011ferlerinin k\u0131r\u0131labilece\u011fi olas\u0131l\u0131\u011f\u0131n\u0131 azalt\u0131r. <\/li>\n<li><b>A\u011f g\u00fcvenli\u011finin g\u00fc\u00e7lendirilmesi:<\/b> Sald\u0131rganlar\u0131n a\u011fa eri\u015fmesini engellemek i\u00e7in g\u00fcvenlik duvarlar\u0131 ve di\u011fer g\u00fcvenlik ara\u00e7lar\u0131 kullan\u0131labilir. <\/li>\n<li><b>D\u00fczenli g\u00fcvenlik g\u00fcncellemelerinin uygulanmas\u0131:<\/b> G\u00fcncellemeler, bilinen g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 d\u00fczeltir ve a\u011f\u0131n\u0131z\u0131 daha g\u00fcvenli hale getirir. <\/li>\n<\/ul>\n<h2>\u00d6nlemlerin Etkilili\u011fi<\/h2>\n<p>Yukar\u0131da bahsedilen \u00f6nlemleri uygulamak, NTLM karma de\u011ferlerinin ele ge\u00e7irilmesi riskini \u00f6nemli \u00f6l\u00e7\u00fcde azalt\u0131r. NTLM kimlik do\u011frulamas\u0131n\u0131n devre d\u0131\u015f\u0131 b\u0131rak\u0131lmas\u0131, en etkili \u00f6nlemdir. Ancak, t\u00fcm sistemler bu de\u011fi\u015fikli\u011fi desteklemez. <\/p>\n<p>Di\u011fer \u00f6nlemlerin kullan\u0131m\u0131, NTLM karma de\u011ferlerinin ele ge\u00e7irilebilse bile, sald\u0131rgan\u0131n karma de\u011ferleri k\u0131rmak i\u00e7in gereken zaman\u0131 uzatabilir. Bu da, karma de\u011ferlerin ele ge\u00e7irilebilse bile, kullan\u0131c\u0131 hesaplar\u0131n\u0131n ele ge\u00e7irilmesini zorla\u015ft\u0131r\u0131r. <\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Kimlik bilgileri d\u00f6k\u00fcm\u00fc, her kurulu\u015f i\u00e7in ciddi bir tehdittir. NTLM karma de\u011ferlerinin ele ge\u00e7irilmesi, bu sald\u0131r\u0131lar i\u00e7in yayg\u0131n bir y\u00f6ntemdir. NTLM kimlik do\u011frulamas\u0131n\u0131n devre d\u0131\u015f\u0131 b\u0131rak\u0131lmas\u0131, bu sald\u0131r\u0131lara kar\u015f\u0131 en etkili \u00f6nlemdir. Ancak, modern kimlik do\u011frulama protokolleri ve MFA gibi di\u011fer \u00f6nlemler de kullan\u0131labilir. <\/p>\n<p>Kurulu\u015flar, bu \u00f6nlemleri uygulayarak ve a\u011f g\u00fcvenli\u011fini g\u00fc\u00e7lendirerek NTLM karma de\u011ferlerinin ele ge\u00e7irilmesi riskini azaltabilir. Ayn\u0131 zamanda, d\u00fczenli g\u00fcvenlik g\u00fcncellemeleri uygulayarak ve \u00e7al\u0131\u015fanlar\u0131n\u0131 kimlik bilgilerini koruma konusunda e\u011fiterek g\u00fcvenli\u011fi art\u0131rabilirler.<\/p>\n<h2>Faydal\u0131 Ba\u011flant\u0131lar<\/h2>\n<p>Bu konuda daha fazla bilgi edinmek istiyorsan\u0131z, a\u015fa\u011f\u0131daki kaynaklar\u0131 inceleyebilirsiniz:<\/p>\n<ul>\n<li><a href=\"https:\/\/fatihsoysal.com\">Fatih Soysal<\/a><\/li>\n<li><a href=\"https:\/\/www.microsoft.com\/en-us\/security\/blog\/2018\/07\/18\/ntlm-and-the-risks-associated-with-it\/\">Microsoft NTLM Blogu<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/NTLM\">NTLM Vikipedi Sayfas\u0131<\/a><\/li>\n<\/ul>\n<h2>#Etiketler<\/h2>\n<p>#KimlikBilgileriD\u00f6k\u00fcm\u00fc #NTLM #KarmaDe\u011fer #G\u00fcvenlik #SiberG\u00fcvenlik #\u00d6nlem #Sald\u0131r\u0131 #A\u011fG\u00fcvenli\u011fi #MFA #\u015eifreG\u00fcvenli\u011fi<\/p>\n","protected":false},"excerpt":{"rendered":"Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi Siber g\u00fcvenlik d\u00fcnyas\u0131nda, kimlik bilgileri d\u00f6k\u00fcm\u00fc, sald\u0131rganlar\u0131n hassas verileri ele&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-3083","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi<\/title>\n<meta name=\"description\" content=\"Siber g\u00fcvenlik d\u00fcnyas\u0131nda, kimlik bilgileri d\u00f6k\u00fcm\u00fc, sald\u0131rganlar\u0131n hassas verileri ele ge\u00e7irmek i\u00e7in s\u0131kl\u0131kla kulland\u0131\u011f\u0131 yayg\u0131n bir tehdittir. Bu sald\u0131r\u0131lar, kurulu\u015flar i\u00e7in ciddi sonu\u00e7lara yol a\u00e7abilir; hesaplar\u0131n ele ge\u00e7irilmesi, veri s\u0131z\u0131nt\u0131lar\u0131 ve itibar kayb\u0131 bunlardan sadece birka\u00e7\u0131d\u0131r. Bu makalede, kimlik bilgileri d\u00f6k\u00fcm\u00fcne odaklanaca\u011f\u0131z ve \u00f6zellikle NTLM karma de\u011ferlerinin nas\u0131l s\u0131zd\u0131r\u0131ld\u0131\u011f\u0131n\u0131 ve bu sald\u0131r\u0131lara kar\u015f\u0131 nas\u0131l \u00f6nlem al\u0131naca\u011f\u0131n\u0131 inceleyece\u011fiz.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi\" \/>\n<meta property=\"og:description\" content=\"Siber g\u00fcvenlik d\u00fcnyas\u0131nda, kimlik bilgileri d\u00f6k\u00fcm\u00fc, sald\u0131rganlar\u0131n hassas verileri ele ge\u00e7irmek i\u00e7in s\u0131kl\u0131kla kulland\u0131\u011f\u0131 yayg\u0131n bir tehdittir. Bu sald\u0131r\u0131lar, kurulu\u015flar i\u00e7in ciddi sonu\u00e7lara yol a\u00e7abilir; hesaplar\u0131n ele ge\u00e7irilmesi, veri s\u0131z\u0131nt\u0131lar\u0131 ve itibar kayb\u0131 bunlardan sadece birka\u00e7\u0131d\u0131r. Bu makalede, kimlik bilgileri d\u00f6k\u00fcm\u00fcne odaklanaca\u011f\u0131z ve \u00f6zellikle NTLM karma de\u011ferlerinin nas\u0131l s\u0131zd\u0131r\u0131ld\u0131\u011f\u0131n\u0131 ve bu sald\u0131r\u0131lara kar\u015f\u0131 nas\u0131l \u00f6nlem al\u0131naca\u011f\u0131n\u0131 inceleyece\u011fiz.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-05T21:15:12+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi\",\"datePublished\":\"2024-11-05T21:15:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/\"},\"wordCount\":787,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/#respond\"]}],\"copyrightYear\":\"2024\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/kimlik-bilgileri-dokumu-ntlm-hash-tespiti-ve-onlenmesi\/\",\"name\":\"Kimlik Bilgileri D\u00f6k\u00fcm\u00fc: NTLM Hash Tespiti ve \u00d6nlenmesi\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2024-11-05T21:15:12+00:00\",\"description\":\"Siber g\u00fcvenlik d\u00fcnyas\u0131nda, kimlik bilgileri d\u00f6k\u00fcm\u00fc, sald\u0131rganlar\u0131n hassas verileri ele ge\u00e7irmek i\u00e7in s\u0131kl\u0131kla kulland\u0131\u011f\u0131 yayg\u0131n bir tehdittir. Bu sald\u0131r\u0131lar, kurulu\u015flar i\u00e7in ciddi sonu\u00e7lara yol a\u00e7abilir; hesaplar\u0131n ele ge\u00e7irilmesi, veri s\u0131z\u0131nt\u0131lar\u0131 ve itibar kayb\u0131 bunlardan sadece birka\u00e7\u0131d\u0131r. 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