The hardcoded File.open path was meant for debugging purposes during
development, but apparently we forgot to remove it. This line causes
the exploit to be unusable on Windows platform.
Fix#6554
Fix#6658.
When there is no service pack, the
Msf::Exploit::Remote::SMB#smb_fingerprint_windows_sp method returns
an empty string. But in the MS08-067 exploit, instead of check an
empty string, it checks for "No Service Pack", which causes it to
never detect the right target for Windows Server 2003 SP0.
This commit includes a new module that allows for payloads to be
uploaded and executed from disk while bypassing AppLocker in the
process. This module is useful for when you're attempting to generate
new shells on the target once you've already got a session. It is also
a handy way of switching between 32 and 64 bit sessions (in the case of
the InstallUtil technique).
The code is taken from Casey Smith's AppLocker bypass research (added in
the references), and includes just one technique at this point. This
technique uses the InstallUtil feature that comes with .NET. Other
techiques can be added at any time.
The code creates a C# file and uploads it to the target. The csc.exe
compiler is used to create a .NET assembly that contains an uninstaller
that gets invoked by InstallUtil behind the scenes. This function is
what contains the payload.
This was tested on Windows 7 x64. It supports running of both 32 and 64
bit payloads out of the box, and checks to make sure that .NET is
installed on the target as well as having a payload that is valid for
the machine (ie. don't run x64 on x86 OSes).
This appears to work fine with both staged and stageless payloads.