Programmer Challenge - Overclock.net

kc-tr · 02-27-07

Ok, this is just for fun, I just want to see if anyone here is familiar with this. If someone can answer the question's they will know why I am asking.

1. What language is this?
2. What would something like this be used for?

Quote:

$egghunt =
"\x66\x81\xca\xff\x0f\x42\x52\x6a\x02" .
"\x58\xcd\x2e\x3c\x05\x5a\x74\xef\xb8" .
$eggtag .
"\x8b\xfa\xaf\x75\xea\xaf\x75\xe7\xff\xe7";

BFRD Should know this one

version2 · 03-01-07

Perl.

You like writing viruses? lol.

("Virus" relating to remote exploiting...)

kc-tr · 03-01-07

Nope not a virus, and Yes it is pearl, and no I dont write them. I am a pen tester, I do contracted security audits, and that is a portion of code that is used. No I wont post what it is, but yes it is pearl and no it is not a virus. But you are right on all aspects other than that it is a virus. Well done

You should join the security field.

I was cleaning up some errors in it, while surfing overclock.net so I thought I would toss a small portion of it up and see if anyone could answer the question

version2 · 03-01-07

At first I thought it was php, but I had never seen the syntax involving $eggtag followed by the dot before in php. Then, I thought it might have been C++. It's been awhile since I've programmed C++ (and I had knew very little about it in the first place), because you are allowed to have the "$" in front of variables in c++ (I think so.) But I wasn't convinced it was c++.

I did a little search on the second line of code (I thought), and found a script, which I was able to determine the language. I also found out that that script had originally been a C++ script for some sort of McAfee Exploit (a "virus" if you will). So I cheated a bit, to be honest. Interesting challenge though, I learned something new.

BTW, the first two lines of code does work in PHP. And, if I were to guess what lines 4 and 5 do (without looking at the original code), I'd guess that $variable . "text"; adds on to the current string in $variable, just like $variable .= "text"; Am I right?

BenHagerty · 03-01-07

haha nice, One a forum they had a programming challenge where you had to get it to post like the numbers 1-5 500 different ways, so hard

DuckieHo · 03-01-07

How about this snipet of code, rep up for whoever gets it!

Code:

	addi $sp, $sp, -20
	sw $fp, 20($sp)
	sw $ra, 16($sp)
	sw $a1, 12($sp)	   
	sw $s4, 8($sp)
	addi $fp, $sp, 20
	add $s4, $zero, $zero

	beq $a1, $s0, DISPLAYLINE	
	j DISPLAYELSE

version2 · 03-02-07

@DuckieHo, I'm not sure about this one, but is it MIPS? I donno. But I think I'm pretty sure it's a compiled language.

Edit: 2 minutes later, and I'm trying to figure out why I was so sure it was a compiled programming language... :/

rabidgnome229 · 03-02-07

Quote:

Originally Posted by DuckieHo

How about this snipet of code, rep up for whoever gets it!

Code:

	addi $sp, $sp, -20
	sw $fp, 20($sp)
	sw $ra, 16($sp)
	sw $a1, 12($sp)	   
	sw $s4, 8($sp)
	addi $fp, $sp, 20
	add $s4, $zero, $zero

	beq $a1, $s0, DISPLAYLINE	
	j DISPLAYELSE

Quote:

Originally Posted by version2

@DuckieHo, I'm not sure about this one, but is it MIPS? I donno. But I think I'm pretty sure it's a compiled language.

I'm with version. It definitely looks like machine code. It's either compiled or assembly

C-bro · 03-02-07

I'm calling the assembly code as well. I only know 8088 and 8051 assembly, but that would be my guess. The #($sp) also looks something like indirect addressing, so that would strengthen my thoughts on assembly.

eternaldj · 03-02-07

compiled maybe?

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Programmer Challenge

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