{"id":6941,"date":"2016-08-19T14:45:55","date_gmt":"2016-08-19T19:45:55","guid":{"rendered":"https:\/\/www.servimatango.com\/blog\/?p=6941"},"modified":"2019-06-11T07:28:45","modified_gmt":"2019-06-11T12:28:45","slug":"explotando-nivel-de-aplicacion-autenticacion-voip","status":"publish","type":"post","link":"https:\/\/servervoip.com\/blog\/explotando-nivel-de-aplicacion-autenticacion-voip\/","title":{"rendered":"Explotando nivel de aplicacion autenticacion VoIP"},"content":{"rendered":"<p><strong>Explotando el nivel de Aplicaci\u00f3n:<\/strong> El nivel de aplicaci\u00f3n de la red IP es quiz\u00e1s uno de los m\u00e1s vulnerables, debido en  parte a que VoIP engloba gran cantidad de protocolos y est\u00e1ndares a\u00f1adiendo cada  uno ellos su propio riesgo de segundad. Un ejemplo  claro de ellos es el protocolo  SIP, muy discutido desde el punto de vista de la seguridad. Entre los ataques  espec\u00edficos contra el nivel de aplicaci\u00f3n de VoIP encontramos ataques de secuestro  de sesi\u00f3n, desconexiones ilegales, inundaci\u00f3n de peticiones, generaci\u00f3n de  paquetes malformados, falsificaci\u00f3n de llamadas y algunos otros que se explicaran  a continuaci\u00f3n utilizando el protocolo SIP como base.   <\/p>\n<p><strong>Autenticaci\u00f3n en VoIP <\/strong> <\/p>\n<p>En toda comunicaci\u00f3n, servicio o transmisi\u00f3n de dato existe la necesidad de  demostrar que los clientes son quien dicen ser. En  VoIP la autenticaci\u00f3n requiere  que los dos dispositivos que se van a comunicar se autentiquen uno al otro antes de  que se produzca cualquier intercambio de informaci\u00f3n.<br \/>\nEsta autenticaci\u00f3n mutua  est\u00e1 basada en alg\u00fan tipode secreto compartido que  es conocido a priori por los  dos.  <\/p>\n<p><strong>Autenticaci\u00f3n del protocolo SIP  <\/strong><\/p>\n<p>El protocolo SIP utiliza la autenticaci\u00f3n digest para comprobar la identidad de sus  clientes.  La autenticaci\u00f3n digest fue originalmente dise\u00f1ada  para el protocolo HTTP, y se  trata de un mecanismo bastante simple, basado en has hes que evita que se env\u00ede la  contrase\u00f1a delos usuarios en texto claro.  Cuando el servidor quiere autenticar un usuario gen era un desaf\u00edo digest que env\u00eda  al usuario.  <\/p>\n<p><strong>Crackeo de contrase\u00f1as SIP <\/strong><\/p>\n<p>Una vez entendido el proceso de autenticaci\u00f3n se va n a mostrar los m\u00e9todos y las  herramientas para romper esa autenticaci\u00f3n y crackear los hashes digest con el fin  deobtener el password de un usuario y poder utiliza r la identidad de la v\u00edctima de  forma maliciosa.  Entre las herramientas encontramos SIPCrack, que co mo su nombre indica, crackea  las contrase\u00f1as del protocolo SIP en Linux. Contien e dos programas sipdump para  esnifar los hashes de la autenticaci\u00f3n y sip crack p ara crackear los logins  capturados.  En caso de encontrarnos una vez m\u00e1s en redes conmutadas puede que sea  necesario el uso de herramientas como ettercap para realizar la t\u00e9cnica de man in  the middle y poder esnifar el tr\u00e1fico necesario.  Como es normal, el \u00e9xito de este ataque depender\u00e1 d e lo bueno y preciso que sea  el diccionario que utilicemos.  <\/p>\n<p>Otra herramienta que sin duda merece la pena comentar para el crackeo de  contrase\u00f1as es Cain. Una vez m\u00e1s permite realizar todo el proceso de captura de  tr\u00e1fico, envenenamiento ARP, decodificaci\u00f3n de protocolos y crackeo de hash por  diccionario y fuerza bruta.   <\/p>\n<div id=\"attachment_6943\" style=\"width: 742px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-6943\" loading=\"lazy\" src=\"https:\/\/www.servimatango.com\/blog\/wp-content\/uploads\/Cain-y-Abel-herramienta-de-crackeo-de-contrasenas.png\" alt=\"Ca\u00edn y Abel, herramienta de crackeo de contrase\u00f1as\" width=\"732\" height=\"510\" class=\"size-full wp-image-6943\" srcset=\"https:\/\/servervoip.com\/blog\/wp-content\/uploads\/Cain-y-Abel-herramienta-de-crackeo-de-contrasenas.png 732w, https:\/\/servervoip.com\/blog\/wp-content\/uploads\/Cain-y-Abel-herramienta-de-crackeo-de-contrasenas-150x105.png 150w, https:\/\/servervoip.com\/blog\/wp-content\/uploads\/Cain-y-Abel-herramienta-de-crackeo-de-contrasenas-300x209.png 300w\" sizes=\"(max-width: 732px) 100vw, 732px\" \/><p id=\"caption-attachment-6943\" class=\"wp-caption-text\">Ca\u00edn y Abel, herramienta de crackeo de contrase\u00f1as<\/p><\/div>\n<p>Tomado de:<br \/>\nArroba, M, &#038; Salazar, M. (2011). Propuesta de soluci\u00f3nes a las vulnerabilidades del protocolo de se\u00f1alizaci\u00f3n SIP en voz sobre IP: Red IP-PBX (tesis de pregrado). Escuela Superior Polit\u00e9cnica de Chimborazo, Riobamba, Ecuador.<\/p>\n<p>Fuente:<br \/>\nhttp:\/\/dspace.espoch.edu.ec\/bitstream\/123456789\/872\/1\/38T00263.pdf<\/p>\n<p>\n<div id=\"rev_slider_3_1_wrapper\" class=\"rev_slider_wrapper fullwidthbanner-container\" style=\"float:left;background-color:#E9E9E9;padding:0px;margin-left:0px;margin-right:0px;margin-top:0px;margin-bottom:0px;\">\n<!-- START REVOLUTION SLIDER 5.0.9 auto mode -->\n\t<div id=\"rev_slider_3_1\" class=\"rev_slider fullwidthabanner\" style=\"display:none;\" data-version=\"5.0.9\">\n<ul>\t<!-- SLIDE  -->\n\t<li data-index=\"rs-28\" data-transition=\"random\" data-slotamount=\"7\"  data-easein=\"default\" data-easeout=\"default\" data-masterspeed=\"300\"  data-thumb=\"\"  data-rotate=\"0\"  data-saveperformance=\"off\"  class=\"voipswitch videos subtitulos\" id=\"voipswitch videos subtitulos\" voipswitch videos subtitulos data-title=\"SubtitulosTexto\" data-description=\"\">\n\t\t<!-- MAIN IMAGE -->\n\t\t<img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\"  alt=\"\"  width=\"879\" height=\"51\" data-lazyload=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/transparent.png\" data-bgposition=\"center top\" data-bgfit=\"cover\" data-bgrepeat=\"no-repeat\" class=\"rev-slidebg\" data-no-retina>\n\t\t<!-- LAYERS -->\n\n\t\t<!-- LAYER NR. 1 -->\n\t\t<div class=\"tp-caption   tp-resizeme\" \n\t\t\t id=\"slide-28-layer-2\" \n\t\t\t data-x=\"\" \n\t\t\t data-y=\"1\" \n\t\t\t\t\t\tdata-width=\"['none','none','none','none']\"\n\t\t\tdata-height=\"['none','none','none','none']\"\n\t\t\tdata-transform_idle=\"o:1;\"\n \n\t\t\t data-transform_in=\"opacity:0;s:300;e:Power2.easeInOut;\" \n\t\t\t data-transform_out=\"opacity:0;s:300;s:300;\" \n\t\t\tdata-start=\"500\" \n\t\t\tdata-responsive_offset=\"on\" \n\n\t\t\t\n\t\t\tstyle=\"z-index: 5;\">\n\t\t\t\t<div class=\"rs-looped disabled\" ><img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\" alt=\"\" data-ww=\"879\" data-hh=\"51\" data-lazyload=\"https:\/\/www.servervoip.com\/blog\/wp-content\/uploads\/2015\/10\/fondo-en-degradado-con-signod-copia.jpg\" data-no-retina> \n\t\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t<!-- LAYER NR. 2 -->\n\t\t<div class=\"tp-caption mediumbgorange   tp-resizeme\" \n\t\t\t id=\"slide-28-layer-1\" \n\t\t\t data-x=\"6\" \n\t\t\t data-y=\"5\" \n\t\t\t\t\t\tdata-width=\"['653']\"\n\t\t\tdata-height=\"['41']\"\n\t\t\tdata-transform_idle=\"o:1;\"\n \n\t\t\t data-transform_in=\"opacity:0;s:300;e:Power3.easeInOut;\" \n\t\t\t data-transform_out=\"auto:auto;s:300;\" \n\t\t\tdata-start=\"500\" \n\t\t\tdata-splitin=\"none\" \n\t\t\tdata-splitout=\"none\" \n\t\t\tdata-responsive_offset=\"on\" \n\n\t\t\t\n\t\t\tstyle=\"z-index: 6; 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src=\"https:\/\/www.servimatango.com\/blog\/wp-content\/uploads\/2015\/08\/tarjeta1-292x300.png\" alt=\"empresario\" width=\"292\" height=\"300\" class=\"aligncenter size-medium wp-image-4092\" \/><\/a><br \/>\n[st_button button_text=\u00bb SOLICITA TU SERVER AHORA \u25ba\u00bb button_type_url=\u00bbhttp:\/\/www.servervoip.com\/voipswitch-comprar.php?server=50_promo\u00bb open_in=\u00bbnew_window\u00bb icon=\u00bbfa fa-shopping-cart\u00bb button_alignment=\u00bbcenter\u00bb button_margin_top=\u00bb-50&#8243; button_margin_bottom=\u00bb-20&#8243; button_size=\u00bbbtn-lg\u00bb button_color=\u00bbbtn-blue\u00bb appearing_animation=\u00bbfade_in\u00bb wrapper_padding_top=\u00bb0&#8243; wrapper_padding_left=\u00bb0&#8243; wrapper_padding_bottom=\u00bb0&#8243; wrapper_padding_right=\u00bb0&#8243; wrapper_bg_opacity_slider=\u00bb\u00bb id_wrapper=\u00bbelm_5c828b42d0755&#8243; ][\/st_button]<br \/>\n&nbsp;<\/p>\n<p><strong>ServerVoip <\/strong>presenta el mejor server fisico dedicado para telefonia voip que incluye el software de telefon\u00eda ip \u00abVoipSwitch\u00bb especial para voz sobre ip.<\/p>\n<p><strong>VoipSwitch <\/strong>es la plataforma ideal para que sin necesidad de conocimientos t\u00e9cnicos crees tu propia empresa de Telefon\u00eda IP VoIP y encuentres una forma de ganar DINERO en la red siendo carrier de telefon\u00eda sobre Ip (Voip). <\/p>\n<p>Te brindamos todas las herramientas para que est\u00e9s al nivel de las grandes empresas y negocios; puedas obsequiar llamadas gratis como estrategia de marketing en fidelizaci\u00f3n a tus clientes \/ free entre tus clientes; el servidor VoIP te permite utilizar m\u00faltiples proveedores como nosotros tenemos <a href=\"http:\/\/www.alosip.com\/\" target=\"_blank\"  rel=\"noopener noreferrer\">www.alosip.com.<\/a>  (carrier \/ routes) para un mismo destino, vender terminaci\u00f3n (wholesale), clientes finales (retail), etc.<\/p>\n<p>El software te proporciona todo lo que necesitas; sistema llave en mano: para crear tu empresa de telefon\u00eda IP (VoIP) bajo tu propio nombre o marca. M\u00e1s informaci\u00f3n en  <a href=\"http:\/\/marcablanca.servervoip.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">marcaBlanca.servervoip.com<\/a><\/p>\n<p>Para que CREES y DESARROLLES tu propia empresa de telefonia por internet, revisa m\u00e1s detalles en <a href=\"http:\/\/www.servervoip.com\/voipswitch\/\" >VoIPSwitch<\/a><\/p>\n<hr \/>\n<h1 style=\"text-align: center;\">\u00bfQuieres Emprender por Internet?<\/h1>\n<h3 style=\"text-align: center;\">\u00abAhora Trabajar desde la Comodidad de tu Casa y Ganar Dinero por Internet&#8230; Nunca Hab\u00eda Sido tan F\u00e1cil, R\u00e1pido y con RESULTADOS Impresionantes\u00bb<\/h3>\n<p style=\"text-align: center;\">Descubre el NEGOCIO Perfecto y convi\u00e9rtete en un EMPRESARIO de \u00c9xito creando y desarrollando tu Propia Empresa de Telefon\u00eda por Internet. <strong>Suscr\u00edbete y RECIBE FREE<\/strong>:<\/p>\n<h2 style=\"text-align: center;\">\u00a1Sie7e Poderosas Razones Que Tiene el EMPRENDEDOR Exitoso para Crear su Propia Empresa de Telefon\u00eda por Internet VoIP!&#8230;<\/h2>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-1229 size-medium\" src=\"http:\/\/servimatango.com\/negocios-rentables\/wp-content\/uploads\/2015\/07\/libro-server-voip-241x300.png\" alt=\"libro server voip\" width=\"241\" height=\"300\" \/><br \/>\n[st_accordion div_margin_bottom=\u00bb15&#8243; initial_open=\u00bb0&#8243; multi_open=\u00bbyes\u00bb wrapper_padding_top=\u00bb0&#8243; wrapper_padding_left=\u00bb0&#8243; wrapper_padding_bottom=\u00bb0&#8243; wrapper_padding_right=\u00bb0&#8243; wrapper_bg_opacity_slider=\u00bb\u00bb wrapper_bg_opacity=\u00bb50&#8243; wrapper_border_style=\u00bboutset\u00bb wrapper_rounded_topleft=\u00bb3&#8243; id_wrapper=\u00bbelm_5c828b0bd3fa6&#8243; ][st_item_accordion heading=\u00bb<img class=aligncenter src=http:\/\/servimatango.com\/negocios-rentables\/wp-content\/uploads\/2015\/07\/Boton-descarga-reporte.gif alt=Reporte width=500 height=145 \/>\u00bb id_wrapper=\u00bbelm_5c828b0bd3f58&#8243; ]<center><script type=\"text\/javascript\" src=\"http:\/\/app.getresponse.com\/view_webform.js?wid=10619501&#038;u=kSvx\"><\/script><\/center>[\/st_item_accordion][\/st_accordion]<\/p>\n<p><a href=\"https:\/\/www.servimatango.com\/blog\/bancos-en-ecuador\/\">Bancos en Ecuador para Alquilar un VoIPSwitch Server<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Explotando el nivel de Aplicaci\u00f3n: El nivel de aplicaci\u00f3n de la red IP es quiz\u00e1s uno de los m\u00e1s vulnerables, debido en parte a que VoIP engloba gran cantidad de protocolos y est\u00e1ndares a\u00f1adiendo cada uno ellos su propio riesgo de segundad. Un ejemplo claro de ellos es el protocolo SIP, muy discutido desde el&#8230;<\/p>\n<p><a class=\"excerpt-read-more btn btn-primary\" href=\"https:\/\/servervoip.com\/blog\/explotando-nivel-de-aplicacion-autenticacion-voip\/\" title=\"ReadExplotando nivel de aplicacion autenticacion VoIP\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":6942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":[],"categories":[13],"tags":[1891,1894,1892,488,153,1893],"_links":{"self":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6941"}],"collection":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/comments?post=6941"}],"version-history":[{"count":0,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6941\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media\/6942"}],"wp:attachment":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media?parent=6941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/categories?post=6941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/tags?post=6941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}