{"id":360,"date":"2023-12-07T03:12:42","date_gmt":"2023-12-07T00:12:42","guid":{"rendered":"https:\/\/sms-txt.net\/?p=360"},"modified":"2024-09-05T12:44:42","modified_gmt":"2024-09-05T09:44:42","slug":"ss7-hivaslehallgatas","status":"publish","type":"post","link":"https:\/\/sms-txt.net\/hu\/hivaslehallgatas\/ss7-hivaslehallgatas\/","title":{"rendered":"SS7 h\u00edv\u00e1slehallgat\u00e1s"},"content":{"rendered":"<p>A mobil kapcsol\u00f3k\u00f6zpont MSC \u00e1ltal\u00e1ban birtokolja az egyes el\u0151fizet\u0151k \u00e1ltal a h\u00edv\u00e1s l\u00e9trehoz\u00e1s\u00e1hoz haszn\u00e1lt titkos\u00edt\u00e1si kulcsokat. Amikor az el\u0151fizet\u0151 mozg\u00e1sban van, egy \u00e1tad\u00e1si folyamat megk\u00f6nny\u00edti az el\u0151fizet\u0151 z\u00f6kken\u0151mentes \u00e1tmenet\u00e9t a k\u00fcl\u00f6nb\u00f6z\u0151 r\u00e1di\u00f3cell\u00e1k k\u00f6z\u00f6tt, mik\u00f6zben fenntartja a h\u00edv\u00e1s el\u0151rehalad\u00e1s\u00e1t.<\/p>\n<p>Bizonyos esetekben az el\u0151fizet\u0151 egyik cell\u00e1b\u00f3l a m\u00e1sikba k\u00f6lt\u00f6zik, amelyet egy m\u00e1sik VLR kezel. Ebben az esetben az \u00faj VLR kezdetben nem rendelkezik a hiteles\u00edt\u00e9si inform\u00e1ci\u00f3kkal, amelyek megk\u00f6nny\u00edten\u00e9k a h\u00edv\u00e1s meg\u0151rz\u00e9s\u00e9t, ez\u00e9rt egy MSC-k k\u00f6z\u00f6tti \u00e1tad\u00e1si folyamatra van sz\u00fcks\u00e9g a kulcsok \u00e1tad\u00e1s\u00e1hoz az \u00faj MSC-hez.<\/p>\n<p>Ez a sendIdentification nev\u0171 MAP-\u00fczenet seg\u00edts\u00e9g\u00e9vel t\u00f6rt\u00e9nik. Az \u00faj VLR sendIdentification \u00fczenetet k\u00fcld a r\u00e9gi VLR-nek, amely viszont a folyamatban l\u00e9v\u0151 h\u00edv\u00e1s fenntart\u00e1s\u00e1hoz sz\u00fcks\u00e9ges kulcsokkal v\u00e1laszol.  Ezek k\u00f6z\u00f6tt a kulcsok k\u00f6z\u00f6tt szerepel a l\u00e9gi forgalom titkos\u00edt\u00e1s\u00e1hoz haszn\u00e1lt kulcs. A t\u00e1mad\u00e1si forgat\u00f3k\u00f6nyv szerint a t\u00e1mad\u00f3 a l\u00e9gi interf\u00e9szen kereszt\u00fcl r\u00f6gz\u00edti a c\u00e9lpont forgalm\u00e1t (amihez a c\u00e9lpont fizikai k\u00f6zels\u00e9g\u00e9re van sz\u00fcks\u00e9g).<\/p>\n<p>Az SS7-hez val\u00f3 hozz\u00e1f\u00e9r\u00e9ssel ezut\u00e1n a sendIdentification \u00fczenet seg\u00edts\u00e9g\u00e9vel lek\u00e9rheti a c\u00e9lpont dek\u00f3dol\u00e1si kulcsait, \u00e9s ezzel dek\u00f3dolhatja a forgalmat. A sendIdentification \u00fczenetre csak a bels\u0151 h\u00e1l\u00f3zaton bel\u00fcl van sz\u00fcks\u00e9g a k\u00f6vetkez\u0151k sor\u00e1n<br \/>\n\u00e1tad\u00e1sok. Nem szabad, hogy k\u00edv\u00fclr\u0151l jogos felhaszn\u00e1l\u00e1sa legyen, ez\u00e9rt a hat\u00e1ron sz\u0171rni kell.<\/p>\n<h2>Kimen\u0151 h\u00edv\u00e1sok elfog\u00e1sa<\/h2>\n<p>A GSM Service Control Function (gsmSCF) egy olyan funkcion\u00e1lis egys\u00e9g, amely tartalmazza a CAMEL szolg\u00e1ltat\u00e1si logik\u00e1t, amely egy bizonyos esem\u00e9nyk\u00e9szlet eset\u00e9ben biztosan eld\u00f6nti, hogy a k\u00edv\u00e1nt m\u0171velet m\u00f3dos\u00edtva, v\u00e1ltozatlanul folytat\u00f3dhat-e, vagy megszak\u00edthat\u00f3-e. Ez haszn\u00e1lhat\u00f3 p\u00e9ld\u00e1ul a kimen\u0151 sz\u00e1mok m\u00f3dos\u00edt\u00e1s\u00e1ra a k\u00f6rzetsz\u00e1m vagy a nemzetk\u00f6zi form\u00e1tum hozz\u00e1ad\u00e1sa \u00e9rdek\u00e9ben.<\/p>\n<p>Az SS7-hez hozz\u00e1f\u00e9r\u00e9ssel rendelkez\u0151 t\u00e1mad\u00f3 egy insertSubscriberData \u00fczenettel megv\u00e1ltoztathatja az el\u0151fizet\u0151 gsmSCF-c\u00edm\u00e9t egy \u00e1ltala ellen\u0151rz\u00f6tt c\u00edmre. A t\u00e1mad\u00f3 ezut\u00e1n k\u00e9pes a kimen\u0151 t\u00e1rcs\u00e1zott sz\u00e1mokat \u00e1t\u00edrni egy \u00e1ltala ir\u00e1ny\u00edtott sz\u00e1mra. Ebben az esetben a t\u00e1mad\u00f3 fogadja a kimen\u0151 h\u00edv\u00e1st, r\u00f6gz\u00edti a h\u00edv\u00e1st, miel\u0151tt tov\u00e1bb\u00edtja a forgalmat a v\u00e9gs\u0151 c\u00e9l\u00e1llom\u00e1sra.<\/p>\n<h2>Lehallgat\u00e1s - Bej\u00f6v\u0151 forgalom - H\u00edv\u00e1s\u00e1tir\u00e1ny\u00edt\u00e1s<\/h2>\n<p>A registerSS \u00fczenet a kieg\u00e9sz\u00edt\u0151 szolg\u00e1ltat\u00e1sok regisztr\u00e1l\u00e1s\u00e1ra szolg\u00e1l az el\u0151fizet\u0151 sz\u00e1m\u00e1ra. Az egyik ilyen szolg\u00e1ltat\u00e1s a h\u00edv\u00e1s\u00e1tir\u00e1ny\u00edt\u00e1si szolg\u00e1ltat\u00e1s. Egy t\u00e1mad\u00f3 a registerSS \u00fczenetet arra haszn\u00e1lhatja, hogy enged\u00e9lyezze a h\u00edv\u00e1s\u00e1tir\u00e1ny\u00edt\u00e1st egy \u00e1ltala ellen\u0151rz\u00f6tt sz\u00e1mra. A h\u00edv\u00e1s fogad\u00e1sakor a t\u00e1mad\u00f3 az eraseSS \u00fczenettel megsz\u00fcnteti a h\u00edv\u00e1s\u00e1tir\u00e1ny\u00edt\u00e1st, majd a h\u00edv\u00e1st visszair\u00e1ny\u00edtja az el\u0151fizet\u0151h\u00f6z. Ily m\u00f3don a t\u00e1mad\u00f3 k\u00e9pes lehallgatni \u00e9s r\u00f6gz\u00edteni a h\u00edv\u00e1st.<\/p>","protected":false},"excerpt":{"rendered":"<p>A mobil kapcsol\u00f3k\u00f6zpont MSC \u00e1ltal\u00e1ban birtokolja az egyes el\u0151fizet\u0151k \u00e1ltal a h\u00edv\u00e1s l\u00e9trehoz\u00e1s\u00e1hoz haszn\u00e1lt titkos\u00edt\u00e1si kulcsokat. Amikor az el\u0151fizet\u0151 mozg\u00e1sban van, egy \u00e1tad\u00e1si folyamat megk\u00f6nny\u00edti az el\u0151fizet\u0151 z\u00f6kken\u0151mentes \u00e1tmenet\u00e9t a k\u00fcl\u00f6nb\u00f6z\u0151 r\u00e1di\u00f3cell\u00e1k k\u00f6z\u00f6tt, mik\u00f6zben a h\u00edv\u00e1s el\u0151rehalad\u00e1s\u00e1t fenntartja. Bizonyos esetekben az el\u0151fizet\u0151 a...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-360","post","type-post","status-publish","format-standard","hentry","category-call-interception"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v26.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SS7 Call Interception<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sms-txt.net\/hu\/hivaslehallgatas\/ss7-hivaslehallgatas\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SS7 Call Interception\" \/>\n<meta property=\"og:description\" content=\"The mobile switching center MSC normally holds the encryption keys used by each subscriber to be able to establish the call. 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