2014-08-07.log

--- Log opened Thu Aug 07 00:00:27 2014
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archelspaperbot: http://www.mitpressjournals.org/doi/pdf/10.1162/NECO_a_0061907:10
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/6199bb10b57628374af21b611d52dd10.pdf07:10
archelspaperbot: http://www.mitpressjournals.org/doi/pdf/10.1162/NECO_a_0063007:11
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/faf2733f6d227f7cd984409ddac6790.pdf07:11
archelsmuch <307:12
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cpopellpaperbot: http://arc.aiaa.org/doi/abs/10.2514/6.2014-402910:05
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/883a2160f9b94a518420aab1c1c6c7cb.txt10:05
cpopellpaperbot: http://arc.aiaa.org/doi/pdfplus/10.2514/6.2014-402910:05
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/d5c41fdb4d0ad618892d0a18ee9d64a2.txt10:05
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kanzurex86 to llvm bytecode http://blog.trailofbits.com/2014/08/07/mcsema-is-officially-open-source/10:26
eudoxiai wonder if the name if a reference to Macsyma, though i can't really see the connection10:26
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kanzure.title http://www.theguardian.com/technology/2014/aug/07/hacker-bitcoin-mining-pool-internet-service-providers-canada-dell11:15
yoleauxHacker makes $84k hijacking Bitcoin mining pool11:15
kanzure"Off to IRC and chat a bit with the pool developers, and some other people, one of whom was experiencing the same problem. It turns out that the stratum protocol used by a lot of pools and miners has an API that allows the pool to tell the mining software to use another URL. (And apparently some mining software has since been patched to ignore this request.) WTF number 4."11:15
kanzure"So it appears that the attack was to identify the established connection between the pool and the mining software, and inject packets in the conversation telling the miner to change it's stratum pool url to the rogue pool. Then the miner would continue on it's way. I lost 2-3 hours of mining to the attack. Not very significant, but thought I'd share."11:15
kanzurefunny, i've used that feature before, didn't know assholes disable it11:15
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kanzurehttps://github.com/isislab/Shellcode12:03
kanzurehttps://github.com/isislab/screwSSH "A frighteningly-easy way of denying access to someone's publicly-accessible OpenSSH server in a default configuration."12:04
kanzure"To prevent the above attack, OpenSSH has a ''MaxStartups'' configuration option, which places an upper bound on how many unauthenticated clients may be connected at once. Unfortunately, its default value is quite conservative: 10."12:04
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* [nsh] tests this concept on various very-important-networks12:26
kanzurewouldn't it be easier to look at the default config for various distros12:27
archelsso if I increase the value to 1000, he'll just spawn 1000 connections12:32
[nsh]you can use puzzles or exponential whatsit to mitigate to a point12:37
[nsh]but yeah, if someone wants to deny access to your public openssh server, they probably can12:38
[nsh]modulo network-layer solutions12:38
archelsah they came up with a more clever method https://en.wikibooks.org/wiki/OpenSSH/Cookbook/Load_balancing12:41
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archelspaperbot: http://www.sciencemag.org/content/345/6197/668.full12:54
paperbothttp://diyhpl.us/~bryan/papers2/paperbot/A%20million%20spiking-neuron%20integrated%20circuit%20with%20a%20scalable%20communication%20network%20and%20interface.pdf12:54
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archelspacket-based routing13:01
archelsno plasticity13:02
archelsthis is the type of architecture that I'd love to try as a general ODE solver, rather than being constrained to nonplastic integrate-and-fire neurons13:04
kanzurearchels, what is the most biologically accurate pile of software you have seen lately?13:05
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archelsI'm not sure13:15
archelsthings that are multiscale come to mind13:15
archelsI'm not certain that biological accuracy is a virtue in and of itself13:18
AshleyWafflehttp://phys.org/news/2014-08-artificial-retina-physicists-interface-optical.html13:18
archelshopefully we can dismiss a lot of biological processes at the lower end of the scale13:18
kanzurehwo do you know what to dismiss13:19
kanzure"delete stuff until it stops working" is the only strategy i know of13:19
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archelsyeah, or behaviourism13:25
archelsif it looks like a duck and quacks like a duck, etc.13:25
kanzurei think you mean "if it quacks like a pyramidal neuron"13:27
[nsh]heh heh13:35
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kanzureexplanation of that earlier http://blog.trailofbits.com/2014/06/23/a-preview-of-mcsema/14:49
kanzureida/idapython/llvm integration sounds neat14:50
kanzureDaeken: i can't seem to step through the initialization of a windows program, and by the time it's initialized and i connect my debugger, i have a license key prompt that i can't dismiss. any hints?14:55
heathman, syncing to the btc network is taking days14:55
kanzureDaeken: i can figure out where it's reading from user input to run through their serial key detection functions, but it's a bit crazy and just finding the launch of that window might be faster14:55
kanzureDaeken: any ideas for things i could do?14:55
kanzureheath: use the bootstrap blockchain torrent14:56
heaththat's useful, ty14:58
kanzurebut also, you don't need the blockchain really14:58
kanzureyou can use regtest mode if you just want to experiment locally14:58
kanzurefor example.. http://webbtc.com/api/relay14:59
kanzurealso i recommend using -txindex -regtest -printtoconsole15:01
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kanzurehttp://code.google.com/p/uberstealth/ "debugger plugin to hide OllyDbg and IDA Pro from most common anti-debugging techniques."15:51
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kanzure"Stratum is a JSON based protocol; it defines a total of five unique request and response messages. We analyzed the miner source code and discovered that several undocumented messages were recognized as well. These undocumented messages include: - “client.show_message” which directly records a string into client logs with no sanitization. - “client.reconnect” which enables a pool to direct a miner to a separate pool with no user ...16:33
kanzure... intervention required."16:33
kanzurestratum.reconnect is the one i've been using16:33
kanzureoops i mean client.reconnect16:33
kanzurebut client.show_message sounds hilarious16:33
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dingowall < /dev/urandom16:51
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kanzuredingo: hm?17:19
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kanzurecloud2butt browser extension https://chrome.google.com/webstore/detail/cloud-to-butt-plus/apmlngnhgbnjpajelfkmabhkfapgnoai18:49
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