read?file=x86+hidden+instructions << (Read Online)

intel hidden instructions

sandsifter blackhat

breaking the x86 isa

sandsifter x86

breaking the x86 instruction set

x86-64 instruction set

xoreaxeaxeax

x86 instruction set

In some cases, links are provided to source code which proves the behavior described within. Descriptions and source code are provided for an undocumented form of AAM and AAD. Other instructions discussed are SALC (also known as SETALC), INT01 (also known as ICEBP) including Pentium and P6 information,
I just wanted to share this incredibly interesting video I stumbled across. A presentation by Christopher Domas about the search for undocumented, and thus purposely hidden, instructions in x86 CPU's. Not only the fact that there seems to be lots of hidden stuff on your average x86 is interesting, the clever
Breaking the x86 ISA. Christopher Domas xoreaxeaxeax@gmail.com. July 17, 2017. Abstract— A processor is not a trusted black box for running code; on the contrary, modern x86 chips are packed full of secret instructions and hardware bugs. In this paper, we demonstrate how page fault analysis and some creative
2 Aug 2017 While the x86 architecture has been around for over 40 years, there exist no public tools for auditing and validating the processor's instruction set. With a history of processor errata, security flaws, and secret instructions, such introspection tools are necessary for establishing trust in a computing system built
31 Aug 2017
30 Jul 2017 Sandsifter has uncovered secret processor instructions from every major vendor; ubiquitous software bugs in disassemblers, assemblers, and emulators; flaws in enterprise hypervisors; and both benign and security-critical hardware bugs in x86 chips. You can read more in the project's whitepaper.
27 Jul 2017 README.md. s a n d s i f t e r. : the x86 processor fuzzer. Overview. The sandsifter audits x86 processors for hidden instructions and hardware bugs, by systematically generating machine code to search through a processor's instruction set, and monitoring execution for anomalies. Sandsifter has uncovered
The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor. The x86 instruction set has been extended several times, introducing wider registers and datatypes
The results of a scan can sometimes be difficult for the tools to automatically classify, and may require manual analysis. . Isn't this fuzzing tool x86-only? "Everybody hates the golden screwdriver upgrade approach, where a feature is either hidden or activated through software, but the truth of the matter is that chip
4 Sep 2017 It's also important to mention that the explicit goal is to "exhaustively search the x86 instruction set and uncover the secrets buried in a chipset" (from the paper). Not to "find thoroughly hidden instructions" or anything like that. You might still mistrust chip manufacturers and suspect that they are conspiring to

Annons

The photo has no tags

February 2018