Safe

Does any one know of a decent tutorial for the R** side of things? I’ve done BoF before but only 32bit and no R**. Need a decent tutorial/resource to get up to speed :slight_smile:

footold;
nmap it, make sure to scan all ports. focus on port 80, try to see things behind the scenes, and something will make sense to you.
user;
a great way to learn a little about the topic, once you’re done with the exploit, address it to the “leet” port.
root;
no python or netcat, but you still can get something nice out of ssh. focus on the home directory, it has all the files needed to get root. google about the database type, try to find attack vectors and then, read --help, maybe there’s an option to pass something you already have in addiction.
it will all make sense after that, remember that this is a CTFish box, so clues might be hidden
over all a great box to step into R** and exploitation, nothing more than that

1st easy box I cannot complete, figured out pretty fast there is a bof on high port. Will try to read up but will most probably dump this box.

Later edit: Can someone please confirm this is ROP related?

Type your comment> @seke said:

1st easy box I cannot complete, figured out pretty fast there is a bof on high port. Will try to read up but will most probably dump this box.

Later edit: Can someone please confirm this is ROP related?

si

need a hint on user, thanks…

Got a working exploit for local but does not work remote - i need to check if I can do better. My local exploit uses stack address but I guess i can find a better way.

Boing ! At least user !

Was stuck for a little bit trying to make the binary exploit work, make sure you pay attention to the calling conventions when jumping to the calls you want to use. If you can’t find info on proper calling conventions just run the program in gdb and see how they are regularly used. Take note of registers used and if information needs to be passed as pointers.

I was excited to see another ‘easy’ box getting released and the first step is literally custom exploitation and reverse engineering XD

User is like breaking into an old cellar in a dungeon. Root is like turning on the lights. Very funny box but its not “easy” :disappointed: I have an exploit done with @haqpl help. Fell free to ask me for any help :slight_smile:

Type your comment> @v0yager said:

Does any one know of a decent tutorial for the R** side of things? I’ve done BoF before but only 32bit and no R**. Need a decent tutorial/resource to get up to speed :slight_smile:

I have written a few articles on binary exploitation on 64 bit rop. You can check out on my blog: https://www.ret2rop.com/

Type your comment> @mRr3b00t said:

Type your comment> @MrR3boot said:

How even this box got approved. wasted my precious time today on this. Its simply copy of previous ones…

we were thinking the same thing…

this is fantastic :smiley:

Could someone pm with some hints on user? I’m sure I’m on the right track based on the hints in this thread, but I’ve tried for a couple days and can’t quite get my exploit to work :frowning:

New to BOFs, so for user, where can I read to give this is a start. Did a few python scripts, and got the overflow error to pop. But not sure how to start this one. Any hints will help.

Type your comment> @ShivamShrirao said:

Type your comment> @v0yager said:

Does any one know of a decent tutorial for the R** side of things? I’ve done BoF before but only 32bit and no R**. Need a decent tutorial/resource to get up to speed :slight_smile:

I have written a few articles on binary exploitation on 64 bit rop. You can check out on my blog: https://www.ret2rop.com/

Thanks mate,

Great articles, reading through them now. Gave you a +1 :+1:

Can anyone throw me a hint on root? Hashcat went through the whole rockyou and turned up blank?

I have exploit working on local machine. I believe the issue with remote exploit is the fixed offset to string b****h. But i am stuck as to how to retrieve the correct offset, specially when the application does not send errors over the socket.

Any directions?

Type your comment> @tang0 said:

I have exploit working on local machine. I believe the issue with remote exploit is the fixed offset to string b****h. But i am stuck as to how to retrieve the correct offset, specially when the application does not send errors over the socket.

Any directions?

There’s no b*h string in the binary, so whatever you’re doing doesn’t seem to be exploitable on remote side (because if you’re doing what I think you’re doing you don’t know the right address of that string)
Instead of complicating things look at the imports of the m
p and use more than one
to solve your problem. Just create the string you need during the exploit run and use it
in the call to other import

@Ripc0rd said:
Can anyone throw me a hint on root? Hashcat went through the whole rockyou and turned up blank?

If you have only 1 hash then you’re missing some information on how this app works.
Read about various ways and see how you can produce more than 1 hash.
When you have this you’ll get the creds really quick

Type your comment> @keyos1 said:

@Ripc0rd said:
Can anyone throw me a hint on root? Hashcat went through the whole rockyou and turned up blank?

If you have only 1 hash then you’re missing some information on how this app works.
Read about various ways and see how you can produce more than 1 hash.
When you have this you’ll get the creds really quick

got 6 hashes, but still not getting anything back?