Dumpster Fire Wireless Capture the Flag @ Bsidesmsp.org 2017

Compete in the Dumpster Fire Wireless Capture the Flag Contest @ Bsidesmsp.org 2017!
June 24-25, 2017 (Saturday & Sunday) at the Minneapolis Convention Center

The Dumpster Fire Wireless CTF will be in the hardware village @ #bsidesmsp2017

Rules:

Contestants can submit results in the hardware village with the contestant name, contact information, and list of flags found and captured.


Don't attack the event infrastructure, flags will be clearly designated

Teams allowed.

Flags can use any radio frequency or protocol legal to use in the US.

Contestants with points will get 1 raffle ticket per point and be entered in a contest Sunday evening to win fabulous dumpster-related prizes.

Clues:

https://cyphercon.com/cyphercon-20/presentations/wireless-hacking-capture-flag/

https://twitter.com/CypherCon_wCTF

Clue sheet available for canned food donation to the Minneapolis Healthy Food Shelf Network.

YOLO!

DD-WRT WRT310Nv2 vs E3200

Using a WRT310Nv2 running Firmware: DD-WRT v24-sp2 (08/12/10) mini

Release 2.0 Broadcom 4716 @ 300 MHz 32 MB RAM 4 MB Flash 2.4 GHz Radio

My favorite setting for gaming reduces the transfer queue length to decrease latency:
Administration-> Commands and enter:

ifconfig eth0 txqueuelen 2
ifconfig eth1 txqueuelen 2

No more buffer bloat!  Using the txqueuelen tuning reducing the ping rate to a Neverwinter Nights server noticeably.

Buffer Bloat is bad! :
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=694799

Next project is to compare the WRT310Nv2 with a http://www.dd-wrt.com/wiki/index.php/Linksys_E3200

I would like to try using the E3200 as a USB file server while also keeping the txqueuelen tweaks...

The E3200 has 500MHz processor, a USB2.0 port, and 2.4ghz AND 5Ghz radios.

So why is the E3200 better than the WRT310Nv2?  The 5Ghz radio and faster cpu and usb port is why.

Confirmed after adding dd-wrt v24-sp 12/11/14 mini that 5ghz wifi and usb2.0 disk does NOT work

http://www.dd-wrt.com/wiki/index.php/What_is_DD-WRT%3F#File_Versions

Upgraded to mega...
That got me many more options, yay :)
One was a USB and NAS tab, with proftpd and samba.
Enabling core usb support and usb storage support...
enable ssh support, ssh in to see if it sees drive
looks like 5ghz does not work even with mega



After replacing the WRT310Nv2 with the E3200 I ran some tests.
USB File sharing worked with FAT32 formated usb disks at about 8M/s.
My raspberry pi can only go about 2-3M/s.

Then I have the same tunings above for latency plus some iptables rules to create a SPAN port which I monitor with OSSIM USM 5.2.0 community edition running on a VMware virtual machine, OSSIM is swapping with only 6G of ram I need to upgrade :)

So my onboot commands to customize ddwrt and send a copy of all traffic to 192.168.1.2 look like:

ifconfig eth0 txqueuelen 2
ifconfig eth1 txqueuelen 2
iptables -t mangle -A POSTROUTING -d 0.0.0.0/0 -j ROUTE --tee --gw 192.168.1.2
iptables -t mangle -A PREROUTING -s 0.0.0.0/0 -j ROUTE --tee --gw 192.168.1.2