9 hrs down the line I’m still capturing packets, now comes the challenging part-to make the hash tables of raw data! My Rabin’s hash algo seems to be working but the only hiccup that could happen was when the negative hash values are obtained. I don’t know whether it is a bug in my code or what but I got negative values for Rabin’s Hash when I gave the string “this is test”! This is gonna test me for sure.

The introduction of low-cost flying alternatives in the Indian skies is a good thing for the Indian consumers as one would reckon. However, the consumers only stand to gain if they get a service which at least gets them their money worth.
Sadly though, the quality of service provided by these low-cost airlines is also “low-grade”. The business principle seems sound that people who want food/refreshments in flight buy it but that does not necessarily mean that one gets hard pressed to board the flight itself. The airline management needs to rethink that low-cost does not mean high tension. My flight experience was as follows:
I was to board the flight from Delhi – Mumbai at around 9:00 pm. However, until 10:30 pm there were no announcements which made me ponder about the very existence of the flight itself. At about 11:00 pm it was announced that the entry would be from Gate # 3. The people rushed in like a horde of animals trying to get into a DTC (Delhi Transport Corporation) bus. Then a technical snag – the key was unable to open the gate # 3 – occurred to make the matters worse. The gates were changed to Gate # 1 resulting into a new frenzy of people trying to reach gate # 1. In what ensued, there were a series of announcements for passengers to board the flight, however, there was a slight problem. The officials on Gate # 1 were not ready to let passengers through. The flights like “Air Deccan” have given a new meaning to the term “fight to the finish” as your fight to get a seat in the flight never ends!

Now I’ve no problems considering that the population of India is huge. However, I do have a problem when seemingly intelligent (?) people do not display basic intelligence. Air Deccan issues unique numbers on it’s boarding passes when people check-in. Why these numbers are not used for seat assignments is a question that only Air Deccan can answer. Apparently, they use these numbers to identify which passengers have / have not boarded the flight.

Unitl these companies realize that cheap tickets should not mean cheap quality the consumers will continue to remain at a loss in these airlines which are advertized as a “high value for money”.

hey, we need to check that your connection works, torrent this file and md5 it

http://services.2014.shallweplayaga.me/hackertool.torrent_fe3b8b75e9639d35e8ac1d9809726ee2

The torrent file when loaded into Vuze showed that the file name was every_ip_address.txt. So I downloaded some of the file and observed the format. The format of the file was “0.0.0.1\n0.0.0.2\n…. “.

So I wrote a quick python script to calculate the md5:

#!/bin/python
import hashlib
m = hashlib.md5()
fsize = 0
a = ''
for i in xrange(256):
    for j in xrange(256):
        for k in xrange(256):
            for l in xrange(256):
                a = str(i)+'.'+str(j)+'.'+str(k)+'.'+str(l)+'\n'
                fsize += len(a)
                m.update( a )
print m.hexdigest()

The flag was “1a97f624cc74e4944350c04f5ae1fe8d”.

So I decided to use WPA2 Personal with AES+TKIP on my new Linksys WRT54GL router after my old D-Link router died. However, there were some issues in getting it to work on Kubuntu 6.10 Edgy Eft with my Intel Wireless IPW3945abg.
So I decided to put my /etc/network/interfaces and the /etc/wpa_supplicant.conf files up here for reference:
Suppose BLAH is my ESSID name. The psk value is an altered value for elucidation purposes only:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
eapol_version=1
ap_scan=2
fast_reauth=1

# WPA-PSK
network={
ssid="BLAH"
proto=WPA RSN
key_mgmt=WPA-PSK
pairwise=TKIP
group=TKIP
psk=aaaa3fa7bbbbccccf6d44e199ecb2bebccccad25a0778beeee104db0b3fffff7
}

The value of the PSK command was obtained by using the value associated with the prefix “psk=…” after issuing the following command:

# wpa_passphrase BLAH passphrase
network={
       ssid="BLAH"
       #psk="passphrase"
       psk=aaaa3fa7bbbbccccf6d44e199ecb2bebccccad25a0778beeee104db0b3fffff7
}

The /etc/network/interfaces looked like this:

auto lo
iface lo inet loopback

auto eth1
iface eth1 inet dhcp
wpa-conf managed
wpa-driver wext
wpa-ssid BLAH
wpa-ap-scan 2
wpa-proto RSN
wpa-pairwise TKIP
wpa-group TKIP
wpa-key-mgmt WPA-PSK
wpa-psk aaaa3fa7bbbbccccf6d44e199ecb2bebccccad25a0778beeee104db0b3fffff7
pre-up wpa_supplicant -Bw -Dwext -i eth1 -c/etc/wpa_supplicant.conf
post-down killall -q wpa_supplicant

Once I was done with this configuration all I had to do was, issue the following command to get wireless working with WPA2 and TKIP:

# /etc/init.d/networking restart

I wanted to have a list of all the security conferences around the world for a quick reference so I compiled together a list.

i updated my backtrack 4 R1 finally using the directions mentioned here. However, after the upgrade my Intel Corporation Wireless WiFi Link 5100 wireless adapter stopped working. My first thought was that the driver was corrupted or something after the upgrade.
But looking through the ‘dmesg‘ command output it became clear that during the startup a particular file iwlwifi-5000-2.ucode could not be located. I thought a reinstall will do it (always works right?).
# apt-get install firmware-iwlwifi
No luck yet! Searching for these files showed me that they were in two locations and both of these were identical (verified via md5sum) :
/lib/firmware-2.6.30.9/iwlwifi-5000-2.ucode
/lib/firmware-2.6.34/iwlwifi-5000-2.ucode
So I just added a symbolic link as follows:
ln -s /lib/firmware-2.6.34/iwlwifi-5000-2.ucode /lib/firmware-2.6.35.8/iwlwifi-5000-2.ucode
Voila! It now worked! Hope it helps!

Back again in the lab to get the module completed as this part needs a lot of effort.
The RabinHash available at Jaspell was very helpful in getting me started with the actual coding of the whole thing. Now since the Rabin Hash values are really varied I need to first figure out ways to search the packet hash presence effectively. Today I’ll try an idea where I’ll mod out the hashes to 3 distinct prime numbers and see the values they hash to. These indices from the table of pointers would point to respective hash values.

           mod p1                          mod p3
      |_______________|                |_______________|
      |_______________|--->[val1]<--+  |_______________|
      |_______________|--->[val2]   |__|_______________|
      |_______________|--->[val3]<--+
              :          :   :      |         :
              :          :   :      |___      :

First I needed to read through how kernel memory allocation works.
Kernel Korner – Allocating Memory in the Kernel | Linux Journal was a fantastic link that got me right into the mem allocation principles!.
Let’s see how the day goes!