Seeing the confusion in the comments I want to provide some examples of situations where this might come up in a security or CTF context:

* You have a restricted shell or other way to execute a restricted set of commands or binaries, often with arbitrary parameters. You can use GTFOBins in interesting ways to read files, write files, or even execute commands and ultimately break out of your restricted context into a shell.

* Someone allowed sudo access or set the SUID bit on a GTFOBin. Using these tricks, you may be able to read or write sensitive files or execute privileged commands in a way the person configuring sudo did not know about.

> restic - Shell, Command, Upload

Well, now I feel a little vindicated tinkering so that my backup wouldn't run as root. Instead it runs as a regular user with read-all-files capabilities [0] and no login shell.

Of course, that's still probably overkill on my desktop, and any attacker that got that far would still be able to read basically every file on the computer and sneak backdoors into the backup...

[0] https://man7.org/linux/man-pages/man7/capabilities.7.html

I am confused. Is this saying that if you don't have access to `cat`, instead of `cat /path/to/input-file` you can use `base64 /path/to/input-file | base64 --decode`?

Or is it saying that `base64 /path/to/input-file | base64 --decode` can bypass read file permission flags?

Haha, as a former maintainer to one of these tools, it makes me laugh to see someone pop a shell. Creative, nice work, nice resource.

I have used this extensively while playing on hackthebox.eu

I'm not sure I get it. base64 is on the list. That can't do anything but read a file to which the user already has access, I think. Am I mistaken or does "a curated list of Unix-like executables that can be used to bypass local security restrictions in misconfigured systems" not mean what I think it does?

they should finetune the LLMs with this

But you would already have to have shell access to the system to execute those commands, right?

The problem is ambient security, UNIX's security model.

Systems with capability-based security, such as seL4[0], do not suffer from this category of problem.

0. https://sel4.systems/About/

As someone who has had to do some grub editing on the computer in an AirBnB because peripherals were all messed up on the guest account (no internet, no sound, you could only see a tiny part of the screen, I honestly don't know how they had managed to do it) I am super pleased to see this resource. Stuff like this is a bit, you know, hopefully you never need this, but when you do, it is so useful to have it.

Ok. It have hundrends o example for all sort of tools, 7z, dig, git. Those are very popular.

Question from security newbie. Why it is not used to hack all sort of servers all the time then?

These come up in CTFs all the time. One trick I don't see here is you can use `dd` to write into the `/proc` hierarchy to achieve all sorts of fuckery including patching shellcode into a running process.

See also:

LOLBAS (https://lolbas-project.github.io/)

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