Since Ruby 2.1, the respond_to? method is more strict because it does
not check protected methods. So when you use send(), clearly you're
ignoring this type of access control. The patch is meant to preserve
this behavior to avoid potential breakage.
Resolve#4507
If the user supplies an invalid session (as in not on the session
list), it will cause a backtrace, because the setup method from
Msf::PostMixin isn't actually called.
We have thought about implementing this in a new OptSession instead.
But you can't use or even pass framework to option_container.rb, so
this is NOT possible.
The original PR was #3956.
This fixes a huge number of hard-to-detect runtime bugs
that occur when a default utf-8 string from one of these
libraries is passed into a method expecting ascii-8bit
Note that there are some cases of host-endian left, these
are intentional because they operate on host-local memory
or services.
When in doubt, please use:
```
ri pack
```
To be clear, the shell that was tested with was 'windows/shell_reverse_tcp' delivered via 'exploit/windows/smb/psexec'
Additional changes required to fix regex to support the multiline output. Also, InstanceId uses a lower case 'D' on the platforms I tested - PowerShell 2.0 on Windows 2003, Windows 7, Windows 2008 R2 as well as PowerShell 4.0 on Windows 2012 R2.
This method doesn't appear to be used anywhere in the Metasploit codebase currently.
I have a case where on a Windows 2008 R2 host with PowerShell 2.0 the 'have_powershell' method times out. When I interactively run the command I find that the output stops after the PowerShell command and the token from 'cmd_exec' is NOT displayed. When I hit return the shell then processes the '&echo <randomstring>' and generates the token that 'cmd_exec' was looking for. I tried various versions of the PowerShell command string such as 'Get-Host;Exit(0)', '$PSVErsionTable.PSVersion', and '-Command Get-Host' but was unable to change the behavior. I found that adding 'echo. | ' simulated pressing enter and did not disrupt the results on this host or on another host where the 'have_powershell' method functioned as expected.
There may be a better solution, but this was the only one that I could find.
sinn3r
Spencer McIntyre
Meatballs
jvazquez-r7
Jon Hart
Joe Vennix
OJ
HD Moore
b00stfr3ak
Tod Beardsley
scriptjunkie
William Vu
joev
Tom Sellers
David Maloney