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129 lines
No EOL
4 KiB
Markdown
129 lines
No EOL
4 KiB
Markdown
# TryHackMe-Wonderland
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## NMAP
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```
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Nmap scan report for 10.10.84.199
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Host is up (0.16s latency).
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Not shown: 65533 closed ports
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PORT STATE SERVICE VERSION
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22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
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| ssh-hostkey:
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| 2048 8e:ee:fb:96:ce:ad:70:dd:05:a9:3b:0d:b0:71:b8:63 (RSA)
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| 256 7a:92:79:44:16:4f:20:43:50:a9:a8:47:e2:c2:be:84 (ECDSA)
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|_ 256 00:0b:80:44:e6:3d:4b:69:47:92:2c:55:14:7e:2a:c9 (ED25519)
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80/tcp open http Golang net/http server (Go-IPFS json-rpc or InfluxDB API)
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|_http-title: Follow the white rabbit.
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Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
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```
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## PORT 80
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<img src="https://imgur.com/ecXhvhD.png"/>
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Okay so I didn't find anything through looking at the source and at the web page so we have to use directory brute force using `gobuster`
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## Directory Brute Force
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```
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gobuster dir -u http://10.10.84.199/ -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
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```
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<img src="https://imgur.com/Wo7jhQP.png"/>
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<img src="https://imgur.com/ocd45aA.png"/>
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Didn't find on the `poem` page either but that `/r` page is interesting
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<img src="https://imgur.com/U04F7h7.png"/>
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So it's telling us to keep going , and as we remeber from the first page we saw there was heading `Follow the Rabbit` so let's give it a shot by actually typing rabbit with each letter as a sperate page.
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<img src="https://imgur.com/drsqOpE.png"/>
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<img src="https://imgur.com/l1igweh.png"/>
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Now by looking at the source we can find a username and password
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<img src="https://imgur.com/H0oUFEU.png"/>
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So the only two services that are ruuning are http and ssh , there isn't any login page we found so this may be the credentials for ssh
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`alice:HowDothTheLittleCrocodileImproveHisShiningTail`
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<img src="https://imgur.com/oLbjSEF.png"/>
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And we are logged in awesome!
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I couldn't find anything expect for walrus something .py which has list of poems in it , I'll get back to it but first let's transfer `linpeas` so we can automate our enumartion and it does for it
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<img src="https://imgur.com/0K9GB8b.png"/>
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So throguh linpeas I found that perl has capabilites meaning that it could run as root with any user like having a SUID but only problem is that only user `root` and `hatter` can execute it
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<img src="https://imgur.com/sa1b9k3.png"/>
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But now we know what we would need to get root but as for now in order to get to `rabbit` user we have to use `/home/alice/walrus_and_the_carpenter.py` and do something in it
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Now this python file is using `random.py` so what we can do is a create a file with the name of `random.py` having this in it
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<img src="https://imgur.com/kZkamNK.png"/>
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<img src="https://imgur.com/IhNjWPM.png"/>
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<img src="https://imgur.com/ypMqfXR.png"/>
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In `rabbit`'s directory we see a `teaparty` binary
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When running it
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<img src="https://imgur.com/mlS6cvm.png"/>
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It will give us an error so we have to transfer it to our local machine and analyze it maybe with `ghidra`
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<img src="https://imgur.com/h2OEaZB.png"/>
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<img src="https://imgur.com/8vj2m6k.png"/>
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By analyzing it we can see that whole thing is statically printed but we see something intersting about two functions
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```
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setuid(0x3eb);
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setgid(0x3eb);
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```
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Set User ID and Set Group ID functions which is taking `0x3eb` as parameter which is in hex and we convert this into decimal it will be `1003` which is the uid and gid of user `hatter`
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We can also see that it's using `date` command which is a binary so what we can do is create `date` binary
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```
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#!/bin/bash
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/bin/bash
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```
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give it permission to execute and then add path to this in $PATH variable
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<img src="https://imgur.com/2K79ntX.png"/>
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We find a passowrd in `hatter`'s home directory
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<img src="https://imgur.com/eVh2imX.png"/>
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<img src="https://imgur.com/AcF6oVX.png"/>
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We can now execute perl as we were not able to execute it as we were not in `hatter`'s group
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Now as I already figured the way to get root so
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## Privilege Escalation
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<img src="https://imgur.com/BwZ6K03.png"/>
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<img src="https://imgur.com/2IZ7ofG.png"/>
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Now that we are root we can grab the user and root flag !!! |