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30 items tagged "cpu"

Related tags: Hardware [+], simatic [+], siemens [+], privilege escalation vulnerability [+], local privilege escalation [+], intel cpu [+], intel [+], hacks [+], administrative commands [+], linux [+], chaos communication congress [+], siemens simatic s7 [+], siemens simatic [+], s7 300 [+], attacker [+], utility [+], ram [+], hashcat [+], hash [+], hackaday [+], functionality [+], cpu cache [+], concept implementation [+], computer [+], cache [+], z80 processor [+], willow garage [+], von neumann architecture [+], vmw [+], virus data [+], vince [+], vhdl [+], veronica [+], unwanted sound [+], unix [+], ttl [+], tamper [+], super [+], sink [+], shell cat [+], saa1064 [+], router [+], rootkit [+], quinn dunki [+], peripherals [+], pcs [+], paul stacey [+], nicolas boulay [+], model [+], microcontrollers [+], michael steil [+], logic simulation [+], linux servers [+], linux box [+], links [+], leon [+], joanna rutkowska [+], java cpu [+], james bowman [+], interfacing [+], integer execution [+], illegal opcodes [+], homebrew computer [+], heat sink [+], heat [+], gpu [+], google [+], gnu licence [+], fridge [+], fpga [+], field programmable gate arrays [+], fan [+], evident [+], engineering [+], ebay [+], dev [+], defeating [+], debug [+], cpu utilization [+], cpu meter [+], cpu heat sink [+], cpu cycles [+], core [+], code [+], christian [+], cedric bail [+], building a computer [+], bill [+], beer fridge [+], beer [+], bar graphs [+], backdoors [+], android [+], adb devices [+], adb [+], acquisition tools [+], Wireless [+]

• December 26, 2012
• 5:01

  Interfacing a GPU with a CPU

   » ‎ Hack a Day
  [Quinn Dunki] pulled together many months worth of work by interfacing her GPU with the CPU. This is one of the major points in her Veronica project which aims to build a computer from the ground up. We’ve seen quite a number of posts from her regarding the AVR-powered GPU. So far the development of [...]

  Tags:  gpu interfacing cpu veronica quinn-dunki computer hacks  

• November 13, 2012
• 0:00

  Vuln: Intel CPU Hardware Local Privilege Escalation Vulnerability

   » ‎ SecurityFocus Vulnerabilities
  Intel CPU Hardware Local Privilege Escalation Vulnerability

  Tags:  intel cpu Hardware privilege-escalation-vulnerability intel-cpu local-privilege-escalation  

• October 26, 2012
• 21:26

  [Audio] F-CPU Development Status Report

   » ‎ SecDocs
  Authors: Cedric Bail Nicolas Boulay
  Tags: hardware hacking
  Event: Chaos Communication Congress 18th (18C3) 2001
  Abstract: The goal of the project is to design a free cpu core (free in the sense of "freedom", not free of charge). The CPU is written in VHDL and all the source code and documentation will be available to whoever wants to build one under a GNU licence (or very close to). The contributors want to create a new standard with a good compromise between cost and performance. Nowadays, the instruction set is defined and most integer execution units (computational blocks) are under design. The main problem is the lack of free synthesis tools (to translate VHDL code into a chip mask) and an enforceable GPL-like licence (electronic circuits obey to specific laws). We will present all the key issues in the design of a cpu and the global architecture of the F-cpu.

  Tags:  code cpu vhdl cedric-bail nicolas-boulay chaos-communication-congress integer-execution gnu-licence  

• October 16, 2012
• 0:00

  Vuln: Intel CPU Hardware Local Privilege Escalation Vulnerability

   » ‎ SecurityFocus Vulnerabilities
  Intel CPU Hardware Local Privilege Escalation Vulnerability

  Tags:  intel cpu Hardware privilege-escalation-vulnerability intel-cpu local-privilege-escalation  

• August 27, 2012
• 0:00

  Vuln: Intel CPU Hardware Local Privilege Escalation Vulnerability

   » ‎ SecurityFocus Vulnerabilities
  Intel CPU Hardware Local Privilege Escalation Vulnerability

  Tags:  intel cpu Hardware privilege-escalation-vulnerability intel-cpu local-privilege-escalation  

• July 25, 2012
• 5:01

  Hackaday Links: July 25, 2012

   » ‎ Hack a Day
  Ever wonder what CPU dev boards look like? In the realm of highly confidential hardware, it doesn’t get much more secret than upcoming CPUs coming out of Intel. Somehow, a few CPU dev boards wound up on eBay, and [Leon] was cool enough to save all the pictures (Polish, Google translation, or translate in the sidebar). [...]

  Tags:  cpu hackaday dev leon ebay google hackaday links  

• July 15, 2012
• 21:10

  Siemens Simatic S7-1200 CPU START/STOP Module

   » ‎ Packet Storm Security Exploits
  The Siemens Simatic S7-1200 S7 CPU start and stop functions over ISO-TSAP this modules allows an attacker to perform administrative commands without authentication. This Metasploit module allows a remote user to change the state of the PLC between STOP and START, allowing an attacker to end process control by the PLC.

  Tags:  simatic siemens cpu siemens-simatic administrative-commands attacker  

• 21:10

  Siemens Simatic S7-1200 CPU START/STOP Module

   » ‎ Packet Storm Security Recent Files
  The Siemens Simatic S7-1200 S7 CPU start and stop functions over ISO-TSAP this modules allows an attacker to perform administrative commands without authentication. This Metasploit module allows a remote user to change the state of the PLC between STOP and START, allowing an attacker to end process control by the PLC.

  Tags:  simatic siemens cpu siemens-simatic administrative-commands attacker  

• 21:10

  Siemens Simatic S7-1200 CPU START/STOP Module

   » ‎ Packet Storm Security Misc. Files
  The Siemens Simatic S7-1200 S7 CPU start and stop functions over ISO-TSAP this modules allows an attacker to perform administrative commands without authentication. This Metasploit module allows a remote user to change the state of the PLC between STOP and START, allowing an attacker to end process control by the PLC.

  Tags:  simatic siemens cpu siemens-simatic administrative-commands attacker  

• 21:06

  Siemens Simatic S7-300/400 CPU START/STOP Module

   » ‎ Packet Storm Security Exploits
  The Siemens Simatic S7-300/400 S7 CPU start and stop functions over ISO-TSAP this modules allows an attacker to perform administrative commands without authentication. This Metasploit module allows a remote user to change the state of the PLC between STOP and START, allowing an attacker to end process control by the PLC.

  Tags:  simatic siemens cpu siemens-simatic-s7 s7-300 administrative-commands  

• 21:06

  Siemens Simatic S7-300/400 CPU START/STOP Module

   » ‎ Packet Storm Security Recent Files
  The Siemens Simatic S7-300/400 S7 CPU start and stop functions over ISO-TSAP this modules allows an attacker to perform administrative commands without authentication. This Metasploit module allows a remote user to change the state of the PLC between STOP and START, allowing an attacker to end process control by the PLC.

  Tags:  simatic siemens cpu siemens-simatic-s7 s7-300 administrative-commands  

• 21:06

  Siemens Simatic S7-300/400 CPU START/STOP Module

   » ‎ Packet Storm Security Misc. Files
  The Siemens Simatic S7-300/400 S7 CPU start and stop functions over ISO-TSAP this modules allows an attacker to perform administrative commands without authentication. This Metasploit module allows a remote user to change the state of the PLC between STOP and START, allowing an attacker to end process control by the PLC.

  Tags:  simatic siemens cpu siemens-simatic-s7 s7-300 administrative-commands  

• July 12, 2012
• 0:00

  Vuln: Intel CPU Hardware Local Privilege Escalation Vulnerability

   » ‎ SecurityFocus Vulnerabilities
  Intel CPU Hardware Local Privilege Escalation Vulnerability

  Tags:  intel cpu Hardware privilege-escalation-vulnerability intel-cpu local-privilege-escalation  

• July 11, 2012
• 0:00

  Vuln: Intel CPU Hardware Local Privilege Escalation Vulnerability

   » ‎ SecurityFocus Vulnerabilities
  Intel CPU Hardware Local Privilege Escalation Vulnerability

  Tags:  intel cpu Hardware privilege-escalation-vulnerability intel-cpu local-privilege-escalation  

• June 18, 2012
• 0:00

  Vuln: Intel CPU Hardware Local Privilege Escalation Vulnerability

   » ‎ SecurityFocus Vulnerabilities
  Intel CPU Hardware Local Privilege Escalation Vulnerability

  Tags:  intel cpu Hardware privilege-escalation-vulnerability intel-cpu local-privilege-escalation  

• May 07, 2012
• 21:42

  [Video] FrozenCache

   » ‎ SecDocs
  Authors: Juergen Pabel
  Tags: forensic
  Event: Chaos Communication Congress 27th (27C3) 2010
  Abstract: Cold boot attacks are a major risk for the protection that Full-Disk-Encryption solutions provide. FrozenCache is a general-purpose solution to this attack for x86 based systems that employs a special CPU cache mode known as "Cache-as-RAM". Switching the CPU cache into a special mode forces data to held exclusively in the CPU cache and not to be written to the backing RAM locations, thus safeguarding data from being obtained from RAM by means of cold boot attacks. A Proof-of-Concept implementation for Linux will be demonstrated and implementation details discussed.

  Tags:  cpu ram cache chaos-communication-congress concept-implementation cpu-cache  

• May 06, 2012
• 21:37

  [Audio] FrozenCache

   » ‎ SecDocs
  Authors: Juergen Pabel
  Tags: forensic
  Event: Chaos Communication Congress 27th (27C3) 2010
  Abstract: Cold boot attacks are a major risk for the protection that Full-Disk-Encryption solutions provide. FrozenCache is a general-purpose solution to this attack for x86 based systems that employs a special CPU cache mode known as "Cache-as-RAM". Switching the CPU cache into a special mode forces data to held exclusively in the CPU cache and not to be written to the backing RAM locations, thus safeguarding data from being obtained from RAM by means of cold boot attacks. A Proof-of-Concept implementation for Linux will be demonstrated and implementation details discussed.

  Tags:  cpu ram cache chaos-communication-congress concept-implementation cpu-cache  

• April 20, 2012
• 21:40

  [Audio] Reverse Engineering the MOS 6502 CPU

   » ‎ SecDocs
  Authors: Michael Steil
  Tags: reverse engineering hardware hacking
  Event: Chaos Communication Congress 27th (27C3) 2010
  Abstract: The MOS 6502 CPU, which was designed in 1975 and powered systems like the Apple II, the Atari 2600, the Nintendo NES and the Commodore 64 for two decades, has always been subject to intense reverse engineering of its inner workings. Only recently, the Visual6502.org project has converted a hi-res die-shot of the 6502 into a polygon model suitable for visually simulating the original mask at the transistor level. This talk will present the way from a chip package to a digital representation, how to simulate transistors in software, and new insights gained form this research about 6502 internals, like "illegal" opcodes. The presentation only requires a basic understanding of assembly programming and electronics, and is meant to teach, among other things, the methods of efficient and elegant chip design used in the early years of integrated CPUs. The talk consists of three parts. The first part, "6502 from top down", describes the programmer's model, as well as the basic layout of the components of the CPU. In the second part, "6502 from bottom up", we describe how to decap and photograph chips, convert each physical layer of the chip into a polygon model, and how to finally convert this into a network of wires and transistors suitable for logic simulation. The third part, "6502 from the inside out", explains the inner workings of the CPU: how the logic blocks work together, how an instruction is decoded by the PLA ROM into controlling these blocks and busses, and how details like interrupt delivery work. Finally, this information can be used to describe and explain undocumented behaviour, like illegal opcodes and crash instructions, and explain bugs like the BRK/IRQ race, the ROR bug and spurious reads and writes in certain situations.

  Tags:  cpu model engineering michael-steil chaos-communication-congress illegal-opcodes logic-simulation  

• January 19, 2012
• 14:05

  High CPU utilization on Linux / Unix systems when using Virus Data 4.71

   » ‎ Sophos product advisories
  Some customers running Sophos Anti-Virus for Linux and UNIX may have noticed a significant increase to the CPU cycles

  Tags:  cpu unix linux virus-data cpu-utilization cpu-cycles  

• August 06, 2011
• 5:30

  [Slides] Beyond The CPU: Defeating Hardware Based RAM Acquisition Tools (Part I: AMD case)

   » ‎ SecDocs
  Authors: Joanna Rutkowska
  Tags: forensic rootkit
  Event: Black Hat DC 2007
  

  Tags:  cpu Hardware defeating joanna-rutkowska acquisition-tools rootkit  

• July 18, 2011
• 13:36

  Building a computer around a TTL CPU

   » ‎ Hack a Day
  [Bill's] worked on his homebrew computer for almost a decade. He didn’t start with a Z80 processor like a lot of the projects we’ve seen, but instead build the CPU itself from 74-series TTL chips and a ridiculous amount of wire wrapping to connect it all. The video after the break shows off the functionality. [...]

  Tags:  ttl cpu computer bill homebrew-computer z80-processor building-a-computer pcs hacks  

• April 07, 2011
• 5:08

  Super VMW CPU Meter

   » ‎ Hack a Day
  After many delays, restarts, and years, [Vince ] has finally finished his Super VMW CPU Meter. Featuring six alphanumeric red led displays, two 10 segment bar graphs, twelve red LEDs, and six color LEDs its got plenty of “screen” space to show all sorts of useful information. Electrically its driven by four SAA1064 LED driver [...]

  Tags:  super cpu vmw vince saa1064 cpu-meter bar-graphs peripherals hacks  

• February 24, 2011
• 15:05

  Hashcat CPU Cracking Utility 0.36

   » ‎ Packet Storm Security Recent Files
  Hashcat is a CPU hash cracking tool that supports multi-hash functionality and is multi-threaded. Linux and Windows binaries are included.

  Tags:  utility cpu hashcat hash functionality linux  

• 15:05

  Hashcat CPU Cracking Utility 0.36

   » ‎ Packet Storm Security Misc. Files
  Hashcat is a CPU hash cracking tool that supports multi-hash functionality and is multi-threaded. Linux and Windows binaries are included.

  Tags:  utility cpu hashcat hash functionality linux  

• December 01, 2010
• 12:00

  J1: a small, fast, CPU core for FPGA

   » ‎ Hack a Day
  [James Bowman] of the Willow Garage published a paper on his J1 CPU core for field-programmable gate arrays. This was originally developed and used for the Ethernet cameras on the PR2 (you know, that incredibly expensive beer delivery system?) robot. It uses a 16-bit von Neumann architecture and lacks several processor features you’d expect a [...]

  Tags:  fpga core cpu james-bowman willow-garage von-neumann-architecture field-programmable-gate-arrays microcontrollers  

• September 08, 2010
• 8:10

  Serial port controlled CPU fan

   » ‎ Hack a Day
  [Christian] was running a Linux box as a home server but needed a way to quiet the noisy machine. Like many Linux servers, he’s using some pretty old hardware which doesn’t have an on-board header for the CPU fan which generates much of the unwanted sound. Those headers are nice because software can monitor the [...]

  Tags:  fan cpu linux christian linux-servers unwanted-sound linux-box hacks  

• July 23, 2010
• 7:40

  Using the Android Debug Bridge (adb)

   » ‎ Carnal0wnage
  The android debug bridge (adb) has lots of useful features. its documented here:
  http://developer.android.com/guide/developing/tools/adb.html
  
  
  user@dev:~/android-tutorial/android-sdk-linux_86/tools$ ./adb
  Android Debug Bridge version 1.0.25
  
  some of the features you may want to immediately mess with are:
  
  listing devices
  
  user@dev:~/android-tutorial/android-sdk-linux_86/tools$ ./adb devices
  * daemon not running. starting it now *
  * daemon started successfully *
  List of devices attached
  emulator-5554 device
  
  getting an interactive shell on the emulator
  
  user@dev:~/android-tutorial/android-sdk-linux_86/tools$ ./adb shell
  # ls
  sqlite_stmt_journals
  cache
  sdcard
  etc
  system
  sys
  sbin
  proc
  init.rc
  init.goldfish.rc
  init
  default.prop
  data
  root
  dev
  
  cat'ing useful stuff inside that shell
  
  # cat /proc/cpuinfo
  Processor : ARM926EJ-S rev 5 (v5l)
  BogoMIPS : 233.47
  Features : swp half thumb fastmult vfp edsp java
  CPU implementer : 0x41
  CPU architecture: 5TEJ
  CPU variant : 0x0
  CPU part : 0x926
  CPU revision : 5
  Cache type : write-through
  Cache clean : not required
  Cache lockdown : not supported
  Cache format : Harvard
  I size : 4096
  I assoc : 4
  I line length : 32
  I sets : 32
  D size : 65536
  D assoc : 4
  D line length : 32
  D sets : 512
  
  Hardware : Goldfish
  Revision : 0000
  Serial : 0000000000000000
  
  and probably pulling things off the file system so you can reverse them.
  
  user@dev:~/android-tutorial/android-sdk-linux_86/tools$ ./adb pull /data/app/com.joelapenna.foursquared.apk com.joelapenna.foursquared.apk
  2441 KB/s (625416 bytes in 0.250s)

  Tags:  debug cpu adb adb-devices shell-cat java-cpu android  

• May 25, 2010
• 11:00

  Cool yourself with a CPU cooler and beer fridge

   » ‎ Hack a Day
  We have arrived once more at the time of year when penniless (or bored) hackers try to figure out how to keep the place cool without buying an air conditioner. [Paul Stacey] sent us his solution of pairing up a CPU cooler kit with a beer fridge. The CPU heat sink is cut out of [...]

  Tags:  cpu fridge beer paul-stacey cpu-heat-sink beer-fridge hacks  

• May 12, 2010
• 0:00

  Tamper Evident CPU Warns Of Malicious Backdoors

   » ‎ Packet Storm Security Headlines
  Tamper Evident CPU Warns Of Malicious Backdoors

  Tags:  evident cpu tamper backdoors  

• May 01, 2010
• 10:00

  CPU as a heat sink

   » ‎ Hack a Day
  We’ve noticed that wireless routers pump out a bunch of heat. [Jernej Kranjec] wanted to make sure that he didn’t fry it once he started adding more load to his router using OpenWRT. What he came up with is the idea of using an old CPU as a passive heat sink. He applied a bit [...]

  Tags:  heat sink cpu heat-sink router Wireless hacks