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| <!DOCTYPE HTML PUBLIC "-//W4C//DTD HTML 4.01 Transitional//EN"> | ||
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| <HTML> | ||
| <HEAD> | ||
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| <TITLE>CS615A -- Aspects of System Administration -- CtF: Level 0</TITLE> | ||
| <STYLE type="text/css"> | ||
| body { | ||
| background-color: #FFFFFf; | ||
| } | ||
| </STYLE> | ||
| <STYLE type="text/css"> | ||
| li.c1 {list-style: none} | ||
| </STYLE> | ||
| </HEAD> | ||
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| <BODY> | ||
| <TABLE border="1" align="center" cellpadding="15"> | ||
| <TR> | ||
| <TD valign="top"> | ||
| <H2>CS615A -- Aspects of System Administration - Spring 2014</H2> | ||
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| <H3>Capture The Flag!</H3> | ||
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| <h4>Level 0</h4> | ||
| <p> | ||
| The instructions for the next level are, of course, top secret. | ||
| Hence, they can only be made available in encrypted form. | ||
| Likewise, we want to ensure that only authorized parties have | ||
| access to these instructions. | ||
| </p> | ||
| <p> | ||
| We accomplish this by using <a | ||
| href="https://en.wikipedia.org/wiki/Pretty_Good_Privacy">Pretty Good | ||
| Privacy</a> (PGP). If you don't know how to use PGP yet, maybe <a | ||
| href="https://duckduckgo.com/?q=gpg+tutorial">this link</a> will help. | ||
| </p> | ||
| <p> | ||
| Your team needs to send an email encrypted with <a | ||
| href="/~jschauma/public_key.gpg.asc">this key</a> to <a | ||
| href="mailto:jschauma@stevens.edu?subject=[CS615] level 0">jschauma@stevens.edu</a> | ||
| with a subject of "[CS615] level 0". In this email, you must | ||
| note: | ||
| <ul> | ||
| <li>the name of your team</li> | ||
| <li>the Stevens usernames of all members of your team</li> | ||
| <li>the PGP key id(s) for which the instructions should be encrypted</li> | ||
| </ul> | ||
| </p> | ||
| <p> | ||
| Each team may submit this email exactly one time in any 24 hour | ||
| window. If not all the correct information is contained in the | ||
| email or it is not properly encrypted, then that team must wait | ||
| for 24 hours to try again. | ||
| </p> | ||
| <p> | ||
| Upon successful completion of this task, all team members will | ||
| receive (encrypted) instructions on how to proceed to <a | ||
| href="ctf-level1.html">level 1</a>. | ||
| </p> | ||
| <hr> | ||
| [<a href="index.html">Course Website</a>] | ||
| </BODY> | ||
| </HTML> |
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| <!DOCTYPE HTML PUBLIC "-//W4C//DTD HTML 4.01 Transitional//EN"> | ||
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| <HTML> | ||
| <HEAD> | ||
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| <TITLE>CS615A -- Aspects of System Administration -- CtF: Level 1</TITLE> | ||
| <STYLE type="text/css"> | ||
| body { | ||
| background-color: #FFFFFf; | ||
| } | ||
| </STYLE> | ||
| <STYLE type="text/css"> | ||
| li.c1 {list-style: none} | ||
| </STYLE> | ||
| </HEAD> | ||
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| <BODY> | ||
| <TABLE border="1" align="center" cellpadding="15"> | ||
| <TR> | ||
| <TD valign="top"> | ||
| <H2>CS615A -- Aspects of System Administration - Spring 2014</H2> | ||
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| <H3>Capture The Flag!</H3> | ||
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| <h4>Level 1</h4> | ||
| <p> | ||
| Congratulations! You have cleared level 0. | ||
| </p> | ||
| <p> | ||
| In order to receive the instructions for the next level, you must send | ||
| another message to <a | ||
| href="mailto:jschauma@stevens.edu?subject=[CS615] level | ||
| 1">jschauma@stevens.edu</a>, this time with a subject of "[CS615] level 1". | ||
| </p> | ||
| <p> | ||
| This message must contain the secret passphrase. This passphrase | ||
| has been made available to you in a file conveniently readable by | ||
| anybody on a system you have access to. | ||
| To help you find that file, here is it's checksum: | ||
| </p> | ||
| <p><tt>d946a25b0d503c9d761b28ea97008da4c93433e30c45b6d38cfc075b0311b246</tt></p> | ||
| <hr> | ||
| [<a href="index.html">Course Website</a>] | ||
| </BODY> | ||
| </HTML> |
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| <!DOCTYPE HTML PUBLIC "-//W4C//DTD HTML 4.01 Transitional//EN"> | ||
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| <HTML> | ||
| <HEAD> | ||
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| <TITLE>CS615A -- Aspects of System Administration -- CtF: Level 2</TITLE> | ||
| <STYLE type="text/css"> | ||
| body { | ||
| background-color: #FFFFFf; | ||
| } | ||
| </STYLE> | ||
| <STYLE type="text/css"> | ||
| li.c1 {list-style: none} | ||
| </STYLE> | ||
| </HEAD> | ||
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| <BODY> | ||
| <TABLE border="1" align="center" cellpadding="15"> | ||
| <TR> | ||
| <TD valign="top"> | ||
| <H2>CS615A -- Aspects of System Administration - Spring 2014</H2> | ||
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| <H3>Capture The Flag!</H3> | ||
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| <h4>Level 2</h4> | ||
| <p> | ||
| Congratulations! You have cleared level 1. | ||
| </p> | ||
| <p> | ||
| The passphrase to receive the instructions for the next level can | ||
| be obtained from this URL: | ||
| </p> | ||
| <p> | ||
| <a href="https://www.cs.stevens.edu/~jschauma/cgi-bin/ctf.cgi">https://www.cs.stevens.edu/~jschauma/cgi-bin/ctf.cgi</a> | ||
| </p> | ||
| <hr> | ||
| [<a href="index.html">Course Website</a>] | ||
| </BODY> | ||
| </HTML> |
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| <!DOCTYPE HTML PUBLIC "-//W4C//DTD HTML 4.01 Transitional//EN"> | ||
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| <HTML> | ||
| <HEAD> | ||
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| <TITLE>CS615A -- Aspects of System Administration -- CtF: Level 3</TITLE> | ||
| <STYLE type="text/css"> | ||
| body { | ||
| background-color: #FFFFFf; | ||
| } | ||
| </STYLE> | ||
| <STYLE type="text/css"> | ||
| li.c1 {list-style: none} | ||
| </STYLE> | ||
| </HEAD> | ||
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| <BODY> | ||
| <TABLE border="1" align="center" cellpadding="15"> | ||
| <TR> | ||
| <TD valign="top"> | ||
| <H2>CS615A -- Aspects of System Administration - Spring 2014</H2> | ||
|
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| <H3>Capture The Flag!</H3> | ||
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| <h4>Level 3</h4> | ||
| <p> | ||
| Congratulations! You have cleared level 2. | ||
| </p> | ||
| <p> | ||
| The passphrase to receive the instructions for the next level can | ||
| be obtained by running the following command on | ||
| <tt>linux-lab.cs.stevens.edu</tt>: | ||
| </p> | ||
| <p> | ||
| <tt>~jschauma/ctf/level3</tt> | ||
| </p> | ||
| <hr> | ||
| [<a href="index.html">Course Website</a>] | ||
| </BODY> | ||
| </HTML> |
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| <TITLE>Team RAMROD was here</TITLE> | ||
| <STYLE type="text/css"> | ||
| body { | ||
| background-color: #FFFFFf; | ||
| } | ||
| </STYLE> | ||
| <STYLE type="text/css"> | ||
| li.c1 {list-style: none} | ||
| </STYLE> | ||
| </HEAD> | ||
|
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| <BODY> | ||
| <TABLE border="1" align="center" cellpadding="15"> | ||
| <TR> | ||
| <TD valign="top"> | ||
| <H2>CS615A -- Aspects of System Administration - Spring 2014</H2> | ||
|
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| <H3>Capture The Flag!</H3> | ||
|
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| <h4>Introduction</h4> | ||
| <p> | ||
| In this group assignment, your task is to "capture the flag" by | ||
| solving a few exercises and problems of increasing | ||
| difficulty. | ||
| </p> | ||
| <p> | ||
| The final "flag" is to take control of, and then defend against | ||
| the other teams, the content of a web server. Note that in this | ||
| game you are simultaneously attackers and defenders: you are | ||
| working against time, trying to solve the problems, while at the | ||
| same time trying to work against the other teams. | ||
| </p> | ||
| <p> | ||
| Each level has one intended solution. Solving all levels in order | ||
| should allow you to capture the flag. However, it is possible | ||
| that you can solve a level in a way not anticipated by the | ||
| instructor, or that you can capture the flag without solving all | ||
| or some of the levels. That's perfectly fine. | ||
| </p> | ||
| <h4>Final Flag</h4> | ||
| <p> | ||
| The final flag is to take control of this site: <a | ||
| href="http://cs615-ctf.netmeister.org">http://cs615-ctf.netmeister.org</a> | ||
| by having the site display your team's name and members. Once you | ||
| have accomplished this, you need to defend it against take-over by | ||
| another team. | ||
| </p> | ||
| <h4>Points</h4> | ||
| <p> | ||
| Capturing (and defending) the flag will gain each of your team's | ||
| member 75 points. | ||
| </p> | ||
| <p> | ||
| Individual levels may gain you partial credit along the way. If | ||
| you solve all individual levels and capture the flag, you will | ||
| gain a total of 75 points; if you find another way to capture the | ||
| flag, you will gain 75 points. That is, you cannot gain | ||
| <em>more</em> than 75 points, but if you attempt to capture the | ||
| flag without solving any of the levels and then fail, you will not | ||
| get any points. | ||
| </p> | ||
| <h4>Proving levels</h4> | ||
| <p> | ||
| In order to claim the points for a given level (including the | ||
| final flag), you must write a document describing how you solved | ||
| the problem. This document must be made available online under | ||
| one of your team member's course website (ie | ||
| <tt>https://www.cs.stevens.edu/~yourname/615/</tt>) and the URL | ||
| sent via email to <a | ||
| href="mailto:jschauma@stevens.edu">jschauma@stevens.edu</a>. | ||
| </p> | ||
| <p> | ||
| After your instructor has acknowledged having retrieved the document, | ||
| you may remove it again (for example to prevent other teams from | ||
| finding out how you solved the problem). | ||
| </p> | ||
| <p> | ||
| 24 hours after a level has been solved by any one team, it will be | ||
| opened up and the points will no longer be available. | ||
| </p> | ||
| <hr> | ||
| <h3>Levels</h3> | ||
| <ul> | ||
| <li><a href="ctf-level0.html">Level 0</a> 5 point</li> | ||
| <li><a href="ctf-level1.html">Level 1</a> 5 points</li> | ||
| <li><a href="ctf-level2.html">Level 2</a> 10 points</li> | ||
| <li><a href="ctf-level3.html">Level 3</a> 15 points</li> | ||
| <li>Level 4 20 points</li> | ||
| <li>Level 5 25 points</li> | ||
| </ul> | ||
| <hr> | ||
| [<a href="index.html">Course Website</a>] | ||
| </BODY> | ||
| </HTML> |
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