April 2005
Intermediate to advanced
344 pages
11h 59m
English
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Writing an Ettercap Dissector
A dissector captures protocol-specific information from the network. Most Ettercap dissectors are designed to capture usernames and passwords transmitted over the network in real time. Here is an example of how to run Ettercap in console mode to sniff passwords:
[root]# ettercap --text --quiet
ettercap NG-0.7.0 copyright 2001-2004 ALoR & NaGA
Listening on en0... (Ethernet)
eth0 -> 00:0B:25:30:11:B 192.168.1.1 255.255.255.0
Privileges dropped to UID 65534 GID 65534...
0 plugins
39 protocol dissectors
53 ports monitored
6312 mac vendor fingerprint
1633 tcp OS fingerprint
2183 known services
Starting Unified sniffing...
Text only Interface activated...
Hit 'h' for inline help
FTP : 10.0.0.1:21 -> USER: john PASS: try4ndgu355m3!!In the preceding example, the FTP dissector successfully sniffed the
FTP password try4ndgu355m3!! of user
john logged on to an FTP server running on host
10.0.0.1.
In the following paragraphs, we will discuss the dissector responsible for capturing FTP usernames and passwords. First we will discuss the FTP authentication mechanism, followed by a detailed analysis of the FTP dissector source code.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.