The document discusses crawlers and how they work. Crawlers walk the network, search for anything they find, and do anything they want. Crawlers can download web pages, operate on the data, and find the next seeds to crawl. However, servers often block crawlers, data is unstructured, and it's difficult to find the next seeds. Crawlers must behave like human users to avoid detection by fetching pages slowly and randomly. Distributed and remote processing models can help make crawlers more efficient.
Presented on May 21, 2017 at CarolinaCon (https://www.carolinacon.org). This talk will provide a light intro to honeypots and their benefits, and highlight two projects HoneyPy and HoneyDB. Operating honeypot sensors on your internal network is a simple way to make your network “noisy” and can trip up malicious actors that have already penetrated your network. Also, leveraging data from honeypot sensors on the Internet can be a useful source of threat information.
Presented on May 21, 2017 at CarolinaCon (https://www.carolinacon.org). This talk will provide a light intro to honeypots and their benefits, and highlight two projects HoneyPy and HoneyDB. Operating honeypot sensors on your internal network is a simple way to make your network “noisy” and can trip up malicious actors that have already penetrated your network. Also, leveraging data from honeypot sensors on the Internet can be a useful source of threat information.
Hack information of any website using webkillerSoniakohli6
For hacking any website or web application, information gathering phase about the target is must. Hackers use different tools for collecting unique information about the target. Web killer is another information-gathering tool with nice options to scan the target. In this tool, we have all the option to perform information gathering and this tool is completely built on the python programming language.
BSidesLondon 20th April 2011 - Manuel
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This talk will show you the basics of reverse engineering Android apps with the ultimate goal of re-implementing the decryption routines of the Kobo Android reader to achieve interopability of other software with that closed interface.
--- for more about Manuel
http://sporkbomb.eu and Kobo http://sporkbomb.eu/kobopier/
Presentation by Haroon Meer, Roelof Tammingh at black hat USA in 2006.
This presentation is about Suru, the inline proxy tool developed by Roelof Tammingh. How it works and some of it's features are discussed.
Shodan is basically a search engine which helps to find (routers, switches, Scada etc.) mainly vulnerable systems on the internet .It is widely known as Google for hackers
It was launched in 2009 by computer programmer John Matherly. It is mainly a search engine of service banners in which metadata (data about data) is sent from the server to client. Shodan currently probes for 50+ ports.
Fronteers 2009 Of Hamsters, Feature Creatures and Missed OpportunitiesChristian Heilmann
My presentation at Fronteers 2009 about the opportunity we have as developers to liberate ourselves from the fail that is browsers and write some nice code to mix data on the web.
Machine Learning for videogames in Unity3D - Fabio Corrirossi - Codemotion Ro...Codemotion
Machine Learning is everywhere and it's changing the world for good! Learn how to set and train a simple AI from scratch with Unity Machine Learning Agents. From zero to an actual demo in just 40 minutes!
A Botnet Detecting Infrastructure Using a Beneficial BotnetTakashi Yamanoue
A beneficial botnet, which tries to cope with technology of malicious botnets such as peer to peer (P2P) networking and Domain Generation Algorithm (DGA), is discussed. In order to cope with such botnets’ technology, we are developing a beneficial botnet as an anti-bot measure, using our previous beneficial bot. The beneficial botnet is a group of beneficial bots. The P2P communication of malicious botnet is hard to detect by a single Intrusion Detection System (IDS). Our beneficial botnet has the ability to detect P2P communication, using collaboration of our beneficial bots. The beneficial bot could detect communication of the pseudo botnet which mimics malicious botnet communication. Our beneficial botnet may also detect communication using DGA. Furthermore, our beneficial botnet has ability to cope with new technology of new botnets, because our beneficial botnet has the ability to evolve, as same as malicious botnets.
Droidcon 2010: Android and iPhone - a known Antagonism ? Professor Dr. Kai Ra...Droidcon Berlin
Android and iPhone - a known antagonism?
Prof. Dr. Kai Rannenberg, Chair of Mobile Business & Multilateral Security, University Frankfurt/Main
On first sight the current market situation of mobile communication devices seems to be comparable with that of the early days of desktop computers(PCs). While Apple focuses on a closed environment, Microsoft and its operating system, Microsoft Windows was open for any hard- and software, which helped them to become market leader. Today the situation for mobile operating systems seems to be similar. The iPhone OS and especially the App Store set a lot of restrictions for parties who want to sell their software via these systems. At the same time, Android is Open Source and therefore used by various hardware providers and open for 3rd party developers without any limitations set by the system provider. So the strategy of Google as Android's driving force is in some points comparable to Microsoft's strategy from in desktop computer market. Will this open system strategy be successful in the mobile market again? The characteristics of the mobile market could ask for other strategies. Additionally, negative experiences with Google in other areas could have a negative impact on Android's acceptance. So e.g. Privacy and Security mayhave to be considered as a weak spot of Google engagement in mobile environments. This talk will discuss these and other related issues.
Mothra - A FreeBSD send-pr tool for bugzilla systemDaniel Lin
FreeBSD use bugzilla for PRs management, you need to use browser to send-pr now.
But, if you use Mothra, you could send-pr from command line as you want.
Usage:
- mothra search <keyword>, <days_ago=180>
- mothra submit <summary>, <file_path>
- mothra attach <bug_id>, <file_path>
- mothra browse <bug_id>
- mothra create <summary>
- mothra get <bug_id>
2. What’s the Crawler
Crawlers walk on the network, search anything it
found and doing anything what they wants...
Search engine
Data finder / collector
Anything else...
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3. Conception
Crawler can easy to be separate into three
steps...
Download
Data operation
Find the next seed
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4. Pseudo Code
Fetch the web page, parser it, get useful
information and repeat it again.
f o r u r l i n nextSeed ( ) :
info = fetch ( url )
data , seeds = o p e r a t e ( i n f o )
pushSeed ( seeds )
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5. Greedy
But easy things are always too hard to be
solved...
Web server always block the crawler!
Data always never structured!
How to find the next seed!
Crawler always bounded on network
speed...
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6. Operation
When we link to the target...
Download the web page, parser the HTML
code
Download the database, parser the DB
format
Finial, record everything into our DB
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7. Pseudo Code
Parser the HTML code, for example, search
what’s you need...
from B e a u t i f u l S o u p import ∗
soup = B e a u t i f u l S o u p ( webpage )
## P r i n t t h e main body
p r i n t soup . h t m l . body
## P r i n t t h e f i r s t t a g <a> i n body
p r i n t soup . h t m l . body . a
## Find t h e p a r t i c u l a r t a g
t a g s = soup . f i n d A l l ( ’ form ’ )
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8. Operation (cont’d)
And more, you also can do something else, like
payload, when operate the web page...
Post / Get the method based on HTML
Find the next seed on the web page
Something good / bad
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9. Link to Site
Before we operated the web page, we need to...
Link to web site
Get the web page
But server master hates the net crawler, ’cause
No functionality
Slow down / burn out the resource
As the thief
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10. Fetch
If you are not Google
You must be the human
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11. Be a Human
Be a human as a human being...
No one can press anything under 0.11
second
No one can look page with few secode
No one can work for all day
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12. Rules
Using the framework / tool to enumlate the
browser
Change the default setting
Simulate the existed browser
Cookie support
Time issue and random variable
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13. Pseudo Code
Simple fetch code
import u r l l i b 2
from c o o k i e l i b import CookieJar
import time , random
f o r n i n range (MAX LOOP ) :
## Cookie
ck = CookieJar ( )
ck = u r l l i b 2 . HTTPCookieProcessor ( ck )
req = u r l l i b 2 . b u i l d o p e n e r ( ck )
## User−Agent
req . addheaders = [ ( ’ User−Agent ’ , ’ c r a w l e r c m j ’ ) ]
data = req . open ( u r l ) . read ( )
## Wait
t i m e . s l e e p ( random . r a n d i n t ( 0 , 5 ) )
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14. Seed
The last one, but the hardest one...
We always unknown the
next sheep
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15. Find Sheep
Using the well known search engine
Also, search engine blocks other crawler
The crawler needs to parser the garbage
code
The result maybe the js code...
Using the random / enumerate method
Too hard to find the useful target
Cost lots of time
Cannot shut sheeps immediately
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16. Based Search Engine
Design an other crawler
Given the initial keyword as the seed
Fetch the search engine
Parser the result, and get the next seed if
possible
Repeat until stop or blocked.
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17. Tricky
Using the distribution model
Separate each parts
More volunteers can speed-up
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18. Pyro4
Pyro4 can help you to remote control python
object...
Expose the object can access as on local
side
Using the remote resource to process
Provide the M-n model
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