mirror of
https://github.com/AbdullahRizwan101/CTF-Writeups
synced 2024-09-20 06:11:56 +00:00
Add files via upload
This commit is contained in:
ARZ
GitHub
parent
e40402fd79
commit
05c9175463
1 changed files with 164 additions and 0 deletions
164
VulnHub/Misdirection.md
Normal file
164
VulnHub/Misdirection.md
Normal file
|
|
@ -0,0 +1,164 @@
|
|||
# Vulnhub-Misdirection
|
||||
|
||||
## NMAP
|
||||
|
||||
```bash
|
||||
|
||||
|
||||
PORT STATE SERVICE REASON VERSION
|
||||
22/tcp open ssh syn-ack ttl 64 OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
|
||||
| ssh-hostkey:
|
||||
| 2048 ec:bb:44:ee:f3:33:af:9f:a5:ce:b5:77:61:45:e4:36 (RSA)
|
||||
| ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCkS5yl+Dpb7vsMGbzAHXBYrVSUNTh4kYGh8zajM3ZujG0XHLvgkW7xJ6F/meai9IrCB5gTq7+tTsn+fqNk0cAZugz4h+vwm5ekXe5szPPHNx
|
||||
NUlKuNAQ0Rch9k7jT/2pWjtsE5iF6yFlh1UA2vBKqrTWVU5vrGWswdFRMWICKWiFXwl1Tv93STPsKHYoVbq74v2y1mVOLn+3JNMmRNCBFqh8Z2x+1DTep0YY8vIV325iRK5ROKCJAPeyX33uoxQ/
|
||||
cYrdPIS+Whs9QX0C+W343Hf2Ypq93h3/g3NNm54LvZdE6X2vTUcUHGdvK2gU+dWQOiDhCpMDv3wiEAwGlf87P5
|
||||
| 256 67:7b:cb:4e:95:1b:78:08:8d:2a:b1:47:04:8d:62:87 (ECDSA)
|
||||
| ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBM+YEivOAqHPDlFWduSuOjAjuJtfC9v/KW2uYB85gxQuibGJQZhFPcxwPEUf7UvQ/a5fr/keKY
|
||||
F2Kdld6gO44jY=
|
||||
| 256 59:04:1d:25:11:6d:89:a3:6c:6d:e4:e3:d2:3c:da:7d (ED25519)
|
||||
|_ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFHxbfiqinvu3cV7JoKrOF3w64zk+0N0h+/2nu+Z20Mk
|
||||
80/tcp open http syn-ack ttl 64 Rocket httpd 1.2.6 (Python 2.7.15rc1)
|
||||
| http-methods:
|
||||
|_ Supported Methods: GET HEAD POST OPTIONS
|
||||
|_http-server-header: Rocket 1.2.6 Python/2.7.15rc1
|
||||
|_http-title: Site doesn't have a title (text/html; charset=utf-8).
|
||||
3306/tcp open mysql syn-ack ttl 64 MySQL (unauthorized)
|
||||
8080/tcp open http syn-ack ttl 64 Apache httpd 2.4.29 ((Ubuntu))
|
||||
| http-methods:
|
||||
|_ Supported Methods: GET POST OPTIONS HEAD
|
||||
|_http-server-header: Apache/2.4.29 (Ubuntu)
|
||||
|_http-title: Apache2 Ubuntu Default Page: It works
|
||||
|
||||
```
|
||||
|
||||
## PORT 80 (HTTP)
|
||||
|
||||
<img src="https://i.imgur.com/vEtNZvd.png"/>
|
||||
|
||||
We could try signing up on the site
|
||||
|
||||
<img src="https://imgur.com/hNHxzRl.png"/>
|
||||
|
||||
But it fails
|
||||
|
||||
<img src="https://imgur.com/HLbylRy.png"/>
|
||||
|
||||
|
||||
## PORT HTTP (8080)
|
||||
|
||||
Moving to port 8080 we can only see a default apache web server page
|
||||
|
||||
<img src="https://imgur.com/NOAYaI2.png"/>
|
||||
|
||||
After running `dirsearch` fuzzing for files and directories
|
||||
|
||||
<img src="https://i.imgur.com/FNhVRP8.png"/>
|
||||
|
||||
I saw these intersting directories so let's visit them
|
||||
|
||||
<img src="https://imgur.com/FifEL0Y.png"/>
|
||||
|
||||
`/shell` didn't have anything
|
||||
|
||||
<img src="https://imgur.com/jNqDY0K.png"/>
|
||||
|
||||
This looks like a rabbit hole, but as I visit `/debug` there's powney web shell running
|
||||
|
||||
<img src="https://imgur.com/kayUPbW.png"/>
|
||||
|
||||
Which means we can get a reverse shell simply by putting a bash reverse shell here
|
||||
|
||||
<img src="https://imgur.com/MSZrtlZ.png"/>
|
||||
|
||||
I tried the bash reverse shell but didn't got any connectio so let's try python
|
||||
|
||||
<img src="https://imgur.com/MKAN3NO.png"/>
|
||||
|
||||
python did the trick and we have a rerverse shell so let's upgrade it to a tty
|
||||
|
||||
<img src="https://imgur.com/nd38gno.png"/>
|
||||
|
||||
Now running `sudo -l` we'll see that we can `bash` as the user `brexit`
|
||||
|
||||
<img src="https://i.imgur.com/epPCQau.png"/>
|
||||
|
||||
So we'll do `sudo -u brexit /bin/bash`
|
||||
|
||||
<img src="https://imgur.com/IDkvpcl.png"/>
|
||||
|
||||
Let's transfer `linpeas`on the machine to enumerate further
|
||||
|
||||
<img src="https://imgur.com/0cxru9d.png"/>
|
||||
|
||||
## Privilege Escalation (Method 1)
|
||||
|
||||
We can see that `/etc/passwd` is owned by user group so we can write on this file
|
||||
|
||||
<img src="https://i.imgur.com/7V1Nl9L.png"/>
|
||||
|
||||
<img src="https://i.imgur.com/DwMoRjo.png"/>
|
||||
|
||||
<img src="https://imgur.com/YaAElHJ.png"/>
|
||||
|
||||
We are root !!1
|
||||
|
||||
|
||||
## Privilege Escalation (Method 2)
|
||||
|
||||
<img src="https://i.imgur.com/pJ6GNd8.png"/>
|
||||
|
||||
We can see that we are in `lxd` group , so we can abuse this to get root user , so on your local machine clone the apline image builder repoistory
|
||||
|
||||
<img src="https://imgur.com/RPjt9Tk.png"/>
|
||||
|
||||
Then run the script to create an image
|
||||
|
||||
<img src="https://imgur.com/Grain5A.png"/>
|
||||
|
||||
<img src="https://i.imgur.com/UUQAI3U.png"/>
|
||||
|
||||
Now you need to host this and transfer it to target machine and im
|
||||
|
||||
<img src="https://imgur.com/cKv4chi.png"/>
|
||||
|
||||
<img src="https://i.imgur.com/IVQueXZ.png"/>
|
||||
|
||||
Run `lxd init`
|
||||
|
||||
<img src="https://i.imgur.com/rZmtCOD.png"/>
|
||||
|
||||
Then initiliaze the image
|
||||
|
||||
<img src="https://imgur.com/GhMCf3u.png"/>
|
||||
|
||||
Now this we are in a container and we had mounted the host system in `/mnt/root`
|
||||
|
||||
<img src="https://i.imgur.com/3cLkcgN.png"/>
|
||||
|
||||
<img src="https://imgur.com/GsfuH2i.png"/>
|
||||
|
||||
We have the flag but not root on the host so we can either add our ssh keys in `authorized_keys` or we can make bash a SUID , so I am going go the easy and make bash a SUID binary
|
||||
|
||||
<img src="https://imgur.com/bGHlfIY.png"/>
|
||||
|
||||
Now exit the container
|
||||
|
||||
<img src="https://i.imgur.com/s8Nkklc.png"/>
|
||||
|
||||
<img src="https://imgur.com/im0OUeV.png"/>
|
||||
|
||||
## Privilege Escalation (Method 3)
|
||||
|
||||
This isn't really necessary and it might not work as the machine doens't have `gcc` installed so I am explicilty installing gcc on this machine
|
||||
|
||||
<img src="https://i.imgur.com/F0EUzrw.png"/>
|
||||
|
||||
<img src="https://imgur.com/NqWgFA4.png"/>
|
||||
|
||||
Now that gcc is installed we can compile the linux overlays kernel exploit
|
||||
|
||||
https://github.com/briskets/CVE-2021-3493
|
||||
|
||||
Make a `.c` file and copy the contents of expoit in it , then use gcc to compile the source code , give executable permissions to the binary and after running you'll get root instantly
|
||||
|
||||
<img src="https://i.imgur.com/A5Mt5kS.png"/>
|
||||
Loading…
Reference in a new issue