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View Full Version : WEP questions - technical help please..


trevelyn
04-04-2007, 03:57 AM
heyas, my name is trevelyn, i have been a memebr of the forums a good while but havent posted yet. I have been using BT since the very first version :) i remember WHAX and Whoppix and auditor, all were great but BT is the best! (okay had to get that out of the way!)

theres some wierd things i have witnessed while testing my networks..

1. sometimes my Airodump screen dies, and i have to restart it, but this hapens early in so i just make sure to check it, no big problem. Works fine, now i guess.

2. I have seen routers that made arp requests no matter what?? like if i Auth and Ass it, and run aireplay-ng -3, i could put anything as the -h option!! even 00:11:22:33:44:55! and i get fast tons of ARP's and Initialization vectors.

3. has Aircrack-ng changed? i used to be able to break my routers 64(40) Bit, with only 125k IV's, and if i changed it to 128(104), i could get it around 350k IV's, back with BT1beta, i am not sure what the Aircrack suite version was back then but, damn it was good. Now theres more options and i need @ least 325k Initialization vectors to break 64(40) bit WEP! I havent gotten 128(104) bit to break yet AT ALL. and i have an ivs, file that contains 1.3M!

4. whats the true difference between --ivs and --cap?

5. Also, "a fake positive" would this be a fake positive ARP that creates a whole boat load of garbage ARPs, that don't contain the right key? Also why would the ARP be hidden behind packets that have a Dest of FF:FF:FF:FF:FF:FF? is this possibly a security measure?

6. What about the routers that produce 3 or 4 IVs then stop replying?? I sometimes see this when i start up my attack with just aireplay-ng -3, then in another xterm aireplay -0 and deauth a client. my card sends and sends, but i get no return? also i can open another window and run aireplay-ng -1, to Auth-Ass and i get 3 or 5 more IV's then it stops again. Is this an example of a router that is not vulnerable to this ARP attack?

7. in my attempt to create handshakes, before i start Deauthing clients do i have to Auth-Ass the router? or could i just make the packets and send them? I see in Airodump that they recieve the packets and stop sending info for a short period of time, but when they start sending again, I check my -ivs file for handshakes and find - none :(

sorry for so many questions, i have googled, and wiki'ed and whatever and you FAQ is gone, from what i can tell. I miss all the good links to the videos. And have hosted them from my site zombie[dot]el[dot]cx[/videos/] indexed under hack, they are old, but fun to watch, my favorite is the one that plays Dsinghis Khan.

Thank you guys in advance - a forever fan of this sexy Pentest OS. - trevelyn.




post script, BT2 Final does not work properly on the MacBook rev2. the keys echo after an extremely long boot. But the beta version r0x. :)

trevelyn
04-05-2007, 10:21 PM
i hate to be answering my own post, i thought this would be the place to post a help like thisa, i guess not sorry, but...

Aircrack *has* changed, and i tell you it's for the worst. Aircrack-ng wont break a .cap file i have containing 1.4M IV's in it, and my machine in my attic hosts all of my files, just happens to be running BT 1 beta. ;) old school eh?
so i tested the .cap file (my WEP is 128 bit BTW) with an old version of aircrack and it got the key in like 10 seconds. ??? Also, with Aircrack-ptw, i won't use Aircrack-ng for anything else anymore except WPA. so, FYI, it's changed, and i have uninstalled it, and reinstalled it, and tried the latest version and such..
nothing. - trev

Mother
04-05-2007, 10:32 PM
You could try to air your doubts in #aircrack-ng over at Freenode.

Cheers,

Mother