New Linux kernel expolit from ac1db1tch3z?

I found this interesting little tidbit over at linuxsecurity.com:

Quote:

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From: [email protected] To: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] Subject: Linux Kernel Exploits / ABFrag

Greetings. Today I had a rather strange experiance. At about 4:30 pm GMT my IDS began reporting strange TCP behaviour on my network segment. As I was unable to verify the cause of this behaviour I was forced to remove the Linux box that I use a border gateway and traffic monitor - at no small cost to my organization - the network is yet to be reconnected. After a reboot and preliminary analysis I found the binary ABfrag sitting in /tmp. It had only been created minutes before. Setting up a small sandbox I ran the program and was presented with the following output:

----------------------------------------------------------------------------

ABfrag - Linux Kernel ( <= 2.4.20pre20 ) Remote Syncing exploit

Found and coded by Ac1db1tch3z - t3kn10n, n0n3 and t3kn0h03.

WARNING:
Unlicensed usage and/or distribution of this program carries heavy fines
and penalties under American, British, European and International copyright
law.
Should you find this program on any compromised system we urge you to delete
this binary rather than attempt distribution or analysis. Such actions would
be both unlawful and unwise.

----------------------------------------------------------------------------
password:
invalid key

I remembered, vaguely - I sift through a lot of security mail each day, some talk of a rumoured Linux kernel exploit circulating among members of the hacker underground. On the advice of some friends in law-enforcement I joined the EFnet channels #phrack and #darknet and tried to solicit some information regarding this alleged exploit. Most people publicly attacked me for my neivette but two individuals contacted me via private messages and informed me that the "ac1db1tch3z" were bad news, apparently a group of older (mid 20's) security guru's, and that I should delete the exploit and forget I ever knew it existed. However, somthing twigged my sense of adventure and prompted me to try and get this out to the community.
Any help or information regarding this will be of great help.

I have attached the binary although it appears to be encrypted and passworded. I wish any skilled programmers the best of luck in decyphering it.

Yours,

Daniel Roberts
Head Network Manager

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Here's a link to the binary: http://linuxsecurity.com/resource_fi...tection/ABfrag

Original article is here.

It appears to employ a TEEE TESO Elf Encryption Engine, which can be cracked if it is level 1 or 2 i think, ill give it a shot and let you know here.

I suspect ac1driegn is ac1dsp3ctrum.

really? WOW that is so flattering... but no, look at my registered date, i have been here since before he was banned, and look at my profile, i seriously doubt a previously banned member would be so open. hehe, by the way, that the encryption protocol is called burneye, I found multiple exploits encrypted in a similar way on packetstorm.decepticons.org, I'm guessing the sender may have gotten it second hand from someone who got it there, and they have md5s for all their exploits, unfortunately, they also got a butload of them, so i have to search thru them... see you in a few months....


<edit>this encryption method is more prolific than I thought. the file wasn't on packetstorm to my knowlege, but is all over the place on a google search. With this kind of popularity, you'd think there'd be an easier method of cracking it. All i found was a little program called burncrack that is supposed to crack levels 1 and 2, but I don't think I know enough about it to run it adequately... I ran the supplied code thru it, and got the output attached. i hop you can make sense out of it. maybe this will help, it is all the TESO realeases pertaining to burneye encryption.

hehe almost there :)
burneye signature found @ 0000100C
burneye stub hash : 66 CC 2F 96 65 3D 4E 36 4D 37 19 20 85 8C AC 91 39 DA FD 88
encrypted length : 16924
encrypted start : 0x00005CAF
encrypted dword : 0xC94A13B9
checksum : 0x3486818D
magic XOR block : 41 89 AA F1 1B BA 38 CD 7A 32 8D B0 ED E8 05 9C F4 98 3D 7E

What exactly is that TEEE TESO Elf Encryption Engine? I did a search on google for it but the results didn't help me. It is like the old polymorphic engines that trident and dark avenger created years ago?

http://www.phrack.org/phrack/58/p58-0x05
This would give you more info about Binary Encryption, written by scut and grugq

I got word that this version of the binary was fake, but the exploit is real.
And also that ac1db1tch3z is semi active.