<?xml version='1.0' encoding='UTF-8'?><rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/" xmlns:blogger="http://schemas.google.com/blogger/2008" xmlns:georss="http://www.georss.org/georss" xmlns:gd="http://schemas.google.com/g/2005" xmlns:thr="http://purl.org/syndication/thread/1.0" version="2.0"><channel><atom:id>tag:blogger.com,1999:blog-3964361555410465200</atom:id><lastBuildDate>Sat, 29 Feb 2020 03:56:10 +0000</lastBuildDate><title>IT Security</title><description>Don&#39;t just scratch the surface of Information Security - Grab a shovel.</description><link>http://security.nathanbowman.us/</link><managingEditor>noreply@blogger.com (NB)</managingEditor><generator>Blogger</generator><openSearch:totalResults>5</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><item><guid isPermaLink="false">tag:blogger.com,1999:blog-3964361555410465200.post-875505976343620204</guid><pubDate>Sat, 01 Dec 2012 07:09:00 +0000</pubDate><atom:updated>2012-12-01T02:16:30.348-05:00</atom:updated><title>Exploit.Exercise.com - Nebula - Level03</title><atom:summary type="text">I decided to try my hand at a war game over at Exploit Exercises. I figured it was a good way to keep my mind sharp. Before reading my spoilers you should give them a try yourself.

I was surprised how easy this level was. According to Exploit Exercises, Nebula Level03:

&quot;Check the home directory of flag03 and take note of the files there.
There is a crontab that is called every couple of minutes</atom:summary><link>http://security.nathanbowman.us/2012/12/exploitexercisecom-nebula-level03.html</link><author>noreply@blogger.com (NB)</author><thr:total>0</thr:total><gd:extendedProperty name="commentSource" value="1"/><gd:extendedProperty name="commentModerationMode" value="FILTERED_POSTMOD"/></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-3964361555410465200.post-3213835329649764441</guid><pubDate>Sun, 19 Aug 2012 17:11:00 +0000</pubDate><atom:updated>2012-08-19T13:16:41.884-04:00</atom:updated><title>Exploit.Exercise.com - Nebula - Level02</title><atom:summary type="text">I decided to try my hand at a war game over at Exploit Exercises. I figured it was a good way to keep my mind sharp. Before reading my spoilers you should give them a try yourself.

Level02 is similar to Level01 in that it you don&#39;t need to know about C++ as much as you need to understand what is going on at the command line. You can see from the level02 code that it executes /bin/echo which </atom:summary><link>http://security.nathanbowman.us/2012/08/exploitexercisecom-nebula-level02.html</link><author>noreply@blogger.com (NB)</author><thr:total>0</thr:total><gd:extendedProperty name="commentSource" value="1"/><gd:extendedProperty name="commentModerationMode" value="FILTERED_POSTMOD"/></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-3964361555410465200.post-4886052044553362151</guid><pubDate>Sat, 18 Aug 2012 06:56:00 +0000</pubDate><atom:updated>2012-08-18T03:25:55.214-04:00</atom:updated><title>Exploit.Exercise.com - Nebula - Level01</title><atom:summary type="text">I decided to try my hand at a war game over at Exploit Exercises. I figured it was a good way to keep my mind sharp. Before reading my spoilers you should give them a try yourself.

With level01 you don&#39;t need to know about programing in C++ as much as you do about how Linux calls binary commands. So, read the blurb over at Wikipedia about the $PATH variable. The whole point in how the $PATH </atom:summary><link>http://security.nathanbowman.us/2012/08/exploitexercisecom-nebula-level01.html</link><author>noreply@blogger.com (NB)</author><thr:total>0</thr:total><gd:extendedProperty name="commentSource" value="1"/><gd:extendedProperty name="commentModerationMode" value="FILTERED_POSTMOD"/></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-3964361555410465200.post-8457969763870284511</guid><pubDate>Mon, 13 Aug 2012 22:39:00 +0000</pubDate><atom:updated>2012-12-01T02:39:29.120-05:00</atom:updated><title>Exploit.Exercise.com - Nebula - Level00</title><atom:summary type="text">I decided to try my hand at a war game over at Exploit Exercises. I figured it was a good way to keep my mind sharp. Before reading my spoilers you should give them a try yourself.

Level00 wants you to find a Set User ID program that is hidden in the filesystem. Level00 says that the SUID program runs as user &#39;flag00&#39;.

The linux command find works really well for this task.

The level00 </atom:summary><link>http://security.nathanbowman.us/2012/08/exploitexercisecom-nebula-level00.html</link><author>noreply@blogger.com (NB)</author><thr:total>1</thr:total><gd:extendedProperty name="commentSource" value="1"/><gd:extendedProperty name="commentModerationMode" value="FILTERED_POSTMOD"/></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-3964361555410465200.post-7695443809596580230</guid><pubDate>Fri, 27 Apr 2012 13:50:00 +0000</pubDate><atom:updated>2012-08-23T09:53:42.432-04:00</atom:updated><title>The Brute Force Misconception</title><atom:summary type="text">









The Dream
Not long ago I was doing some research on the topic of brute forcing passwords. I was considering setting up a GPU farm to host a password cracking service.  Basically, people would submit password hashes and I would crack them.  For a price obviously. I envisioned making millions and getting government contracts.

Unfortunately I didn&#39;t get past the research and planning </atom:summary><link>http://security.nathanbowman.us/2012/04/the-brute-force-misconception.html</link><author>noreply@blogger.com (NB)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://1.bp.blogspot.com/-Mu2cyYnfE3o/UDY1jpzoyBI/AAAAAAAAABA/F7BTfq_QBxQ/s72-c/bruteforce.jpg" height="72" width="72"/><thr:total>0</thr:total><gd:extendedProperty name="commentSource" value="1"/><gd:extendedProperty name="commentModerationMode" value="FILTERED_POSTMOD"/></item></channel></rss>