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Add option for running cmd_execute in a subshell #15540

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Aug 16, 2021
Merged

Add option for running cmd_execute in a subshell #15540

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7 changes: 6 additions & 1 deletion lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@ class Console::CommandDispatcher::Stdapi::Sys
"-d" => [ true, "The 'dummy' executable to launch when using -m." ],
"-t" => [ false, "Execute process with currently impersonated thread token"],
"-k" => [ false, "Execute process on the meterpreters current desktop" ],
"-z" => [ false, "Execute process in a subshell" ],
"-s" => [ true, "Execute process in a given session as the session user" ])

#
Expand Down Expand Up @@ -201,6 +202,7 @@ def cmd_execute(*args)
cmd_args = nil
cmd_exec = nil
use_thread_token = false
subshell = false

@@execute_opts.parse(args) { |opt, idx, val|
case opt
Expand Down Expand Up @@ -228,6 +230,8 @@ def cmd_execute(*args)
use_thread_token = true
when "-s"
session = val.to_i
when "-z"
subshell = true
end
}

Expand All @@ -244,6 +248,7 @@ def cmd_execute(*args)
'Session' => session,
'Hidden' => hidden,
'InMemory' => (from_mem) ? dummy_exec : nil,
'Subshell' => subshell,
'UseThreadToken' => use_thread_token)

print_line("Process #{p.pid} created.")
Expand Down Expand Up @@ -405,7 +410,7 @@ def pty_shell(sh_path)
cmd.prepend('env TERM=xterm HISTFILE= ')

print_status(cmd)
cmd_execute('-f', cmd, '-c', '-i')
cmd_execute('-f', cmd, '-c', '-i', '-z')

true
end
Expand Down