total 8                                                                         drwxr-xr-x 2 admin root 4096 Sep 24 23:20 agent                                 -rwxrwx--- 1 root  root  360 Sep 24 23:20 webserver.py                          admin@i-06bbe1bb9a1bed390:~$ sudo wc -l webserver.py                                                                                                            We trust you have received the usual lecture from the local System              Administrator. It usually boils down to these three things:                                                                                                         #1) Respect the privacy of others.                                              #2) Think before you type.                                                      #3) With great power comes great responsibility.                                                                                                            [sudo] password for admin:                                                      sudo: a password is required                                                    admin@i-06bbe1bb9a1bed390:~$ grep password                                      

[sudo] password for admin:                                                      sudo: 1 incorrect password attempt                                              admin@i-04a84196af5c95871:~$ ^C                                                 admin@i-04a84196af5c95871:~$ ^C                                                 admin@i-04a84196af5c95871:~$ ls                                                 agent  index.html  mysolution  webserver.py                                     admin@i-04a84196af5c95871:~$ su root                                            Password:                                                                       su: Authentication failure                                                      admin@i-04a84196af5c95871:~$ su root                                            Password:                                                                       su: Authentication failure                                                      admin@i-04a84196af5c95871:~$ ls                                                 agent  index.html  mysolution  webserver.py                                     admin@i-04a84196af5c95871:~$ cat /var/ww                                        

699   write(2, "\n", 1)                 = 1                                     699   write(2, "\n", 1)                 = 1                                     699   write(2, "goroutine ", 10)        = 10                                    699   write(2, "1", 1)                  = 1                                     699   write(2, " [", 2)                 = 2                                     699   write(2, "running", 7)            = 7                                     699   write(2, "]:\n", 3)               = 3                                     700   <... nanosleep resumed>NULL)      = 0                                     700   futex(0x56b498, FUTEX_WAIT_PRIVATE, 0, {tv_sec=60, tv_nsec=0} <unfinished 699   write(2, "main.main", 9)          = 9                                     699   write(2, "(", 1)                  = 1                                     699   write(2, ")\n", 2)                = 2                                     699   write(2, "\t", 1)                 = 1                                     699   write(2, "./main.go", 9)          = 9                                     Pattern not found  (press RETURN)                                               

drwxr-xr-x 6 admin admin     4096 Feb 14 01:24 ..                               -rwxr-xr-x 1 admin admin      230 Sep 24 23:20 check.sh                         -rwxr-xr-x 1 admin root  11397096 Sep 20 15:53 sadagent                         -rw-r--r-- 1 admin admin        0 Sep 20 15:53 sadagent.txt                     admin@i-0613915f249b84d87:~/agent$ cat check.sh                                 #!/bin/bash                                                                                                                                                     expected_checksum="d8bee9d7f830d5fb59b89e1e120cce8e"                            actual_checksum=$(md5sum /home/admin/mysolution | awk '{print $1}')                                                                                             if [[ "$actual_checksum" == "$expected_checksum" ]]; then                         echo -n "OK"                                                                  else                                                                              echo -n "NO"                                                                  fiadmin@i-0613915f249b84d87:~/agent$ ./