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Found 4 results

  1. I'm wanting to take an idea from this TED talk, which talks about converting information into a form that the brain can decode and understand subconsciously, and apply it to gaming. I think I'm going to want to view RAM in real time, convert it locally on the computer, and then ship it off to an Arduino which will then output it to vibration motors. I want to experiment with: A) Dumping all of the RAM in real time to an Arduino to spit out on vibration motors, and B) Dumping only the RAM for specific processes I've seen RAMMap, but that looked more like a RAM analyzing tool, not something that could view RAM in real time to be exported to an Arduino. Does any one have any ideas on how I can view RAM in realtime? If you have thoughts on any other part of the project, let me know! Thanks!
  2. Sometimes you discovering a vulnerability when you don’t search for and sometimes finally like this, it’s simply a false alert. More than 70 percents of vulnerabilities I’ve found in my life have no rapport with a security research, but simply due to chance, when doing administrator tasks for example. This day, I decide for a customer that have millions of hit on this website because of a holiday game, to put the content of his website directly in memory for not having iops problems anymore. For doing this i simply use a ramdisk and i make a synchronization from disk (where is stored the code) to ramdisk each minute via rsync. This customers is on a lxc container with 8 GB RAM connected to a separate MySQL server by a private network. The webserver only use less than 1 GB of RAM and the applications less than 500 MB of disk space. So I just create a ramdisk like this : mkdir /home/ramdisk echo "shm /home/ramdisk tmpfs nodev,nosuid,noexec 0 0" >> /etc/fstab mount /home/ramdisk rsync -avz --stats --delete /home/xxxx /home/ramdisk/ After this, i am verifying with a simple df -h and i can see a big suprise : ~# df -h Filesystem Size Used Avail Use% Mounted on zfstore/zfs-containers/subvol-9202234-disk-1 32G 1.4G 31G 5% / none 492K 0 492K 0% /dev tmpfs 26G 68K 26G 1% /run tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 1.7G 0 1.7G 0% /run/shm shm 126G 410M 126G 1% /home/ramdisk My /home/ramdisk have a size of 126 G. Just after i verify with and without it, if ram seems used by this but the ram is exactly at the same state. Very excited to probably have found a new vulnerability, i am verifying on a new container on an other cluster and i can reproduce the problem with success. In the same time I am sending an email to a person i know that work on an implementation of this product and it is finally just a display problem : Privileged containers only fail to *show* the used memory (it’s an accounting issue), but after hitting the specified limits you’ll be writing to swap space instead, and ultimately the kernel’s OOM killer will kill the container before it starts using more RAM than assigned (note that both RAM and swap limits have to be hit). End of the story :) -- Christophe Casalegno https://twitter.com/Brain0verride
  3. Hey everyone, hopefully this is the right area to post. I was poking around in my /proc directory tonight, and began thinking. (Usually this leads to massive amounts of questions). When a program is executed, how does the OS know how much total memory to give to the program? And is the the total memory even divided 50/50 for it's heap and stack? What determines rather the application have more stack memory or more heap memory? I'm sure this is answered somewhere, but I can't get a clear answer, thanks in advance!
  4. On my usb port I'm using usb memory stick (http://forums.hak5.org/index.php?/topic/25882-how-to-enable-usb-mass-storage-with-swap-partition/'>made like this) I'm using usb memory for saving "infusions aka modules" Can I use this same usb memory stick for saving files in /<root>/? e.g.: http://hak5.org/hack/pineapple-phishing Begin by downloading and installing the following packages from downloads.openwrt.org: libopenssl_0.9.8i-3.2_mips.ipk, php4_4.4.7-1_mips.ipk, php4-cgi_4.4.7-1_mips.ipk and zlib_1.2.3-5_mips.ipk Copy the package files (*.ipk) to the WiFi Pineapple in /root/ using the scp command in Linux or an SCP utility in Windows like WinSCP or Plink. Only I don't have enough memory on ap121u to install all files, can I extend it with the same usb memory stick?
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