- 06 Αύγ 2015, 16:09
#146266
Αυτο ειναι το ευχαριστώ στους ανθρώπους που σε εφεραν σε αυτον τον κοσμο?? Παρτους pentium τοτε 
< 3
< 3
- 06 Αύγ 2015, 17:43
#146288
Μάλλον για να ανεβάζει συμπίεση!
- 06 Αύγ 2015, 19:49
#146304
Ο Geo για τους δικούς του, στήνει ένα κουαντουμ κομπιουντερ....
I don't always agree with what I say...
I don't always agree with what I say...
It was not possible to determine the dimensions of the image.
- 06 Αύγ 2015, 22:08
#146332
.wav ?
.WAV ?
Διάβασα καλά;
Ε τότε αρκεί ένας 486
Πάρτους μωρέ εκεί ένα ό,τι πιο απλό και μην ασχολείσαι
Αρκεί να μπορεί να παίζει HD άνετα. Αν πάρεις απλή cpu πχ celeron τότε ίσως είναι καλύτερα ν'αντισταθμίσεις μ'έναν ssd. Έναν απλό 128ρη, τον πιο φθηνό που θα βρεις.
.WAV ?
Διάβασα καλά;
Ε τότε αρκεί ένας 486
Πάρτους μωρέ εκεί ένα ό,τι πιο απλό και μην ασχολείσαι
Αρκεί να μπορεί να παίζει HD άνετα. Αν πάρεις απλή cpu πχ celeron τότε ίσως είναι καλύτερα ν'αντισταθμίσεις μ'έναν ssd. Έναν απλό 128ρη, τον πιο φθηνό που θα βρεις.
Drive quick but safe and stay calm.
My Flickr
My Flickr
- 09 Αύγ 2015, 17:54
#146825
νταξ γελαμε εδω περα intel γκε ντα μοιαλλλα στα καγκαιλα
In x86, beyond ring 0 lie the more privileged realms of execution, where our code is invisible to AV, we have unfettered access to hardware, and can trivially preempt and modify the OS. The architecture has heaped layers upon layers of protections on these negative rings, but 40 years of x86 evolution have left a labyrinth of forgotten backdoors into the ultra-privileged modes. Lost in this byzantine maze of decades-old architecture improvements and patches, there lies a design flaw that's gone unnoticed for 20 years. In one of the most bizarre and complex vulnerabilities we've ever seen, we'll release proof-of-concept code exploiting the vast, unexplored wasteland of forgotten x86 features, to demonstrate how to jump malicious code from the paltry ring 0 into the deepest, darkest realms of the processor. Best of all, we'll do it with an architectural 0-day built into the silicon itself, directed against a uniquely vulnerable string of code running on every single system.
https://www.blackhat.com/us-15/briefing ... escalation
In x86, beyond ring 0 lie the more privileged realms of execution, where our code is invisible to AV, we have unfettered access to hardware, and can trivially preempt and modify the OS. The architecture has heaped layers upon layers of protections on these negative rings, but 40 years of x86 evolution have left a labyrinth of forgotten backdoors into the ultra-privileged modes. Lost in this byzantine maze of decades-old architecture improvements and patches, there lies a design flaw that's gone unnoticed for 20 years. In one of the most bizarre and complex vulnerabilities we've ever seen, we'll release proof-of-concept code exploiting the vast, unexplored wasteland of forgotten x86 features, to demonstrate how to jump malicious code from the paltry ring 0 into the deepest, darkest realms of the processor. Best of all, we'll do it with an architectural 0-day built into the silicon itself, directed against a uniquely vulnerable string of code running on every single system.
https://www.blackhat.com/us-15/briefing ... escalation
- 09 Αύγ 2015, 18:04
#146827
Πες στους μαυρογιαλουρους να διαβασουν και καμια συσκευασια απο το καλσον.
Θα είμαι πάντα με τους ξυπόλυτους , γιατί αυτοί έχουν το δίκιο με το μέρος τους.
- 09 Αύγ 2015, 21:56
#146854
Τι έχουμε δηλαδή εδώ ακριβώς cabala;
cabala10 έγραψε:...
Τι έχουμε δηλαδή εδώ ακριβώς cabala;
Κωνσταντίνος
Ο γερομπισμπίκης σε νέες περιπέτειες.
Κάτω η δικτατορία των shorts.
Ο γερομπισμπίκης σε νέες περιπέτειες.
Κάτω η δικτατορία των shorts.
- 09 Αύγ 2015, 22:06
#146855
αν ενιωσα καλα μπορει καποιος να βαλει rootkit μεσα στο smm και απο εκει να κανει πρακτικα οτι θελει ακομη και να σβησει τα τωρινα uefi/bios
αναρωτιεμαι ποσο καιρο θα το γνωριζε αυτο η nsa
drdino έγραψε:cabala10 έγραψε:...
Τι έχουμε δηλαδή εδώ ακριβώς cabala;
αν ενιωσα καλα μπορει καποιος να βαλει rootkit μεσα στο smm και απο εκει να κανει πρακτικα οτι θελει ακομη και να σβησει τα τωρινα uefi/bios
αναρωτιεμαι ποσο καιρο θα το γνωριζε αυτο η nsa
- 10 Αύγ 2015, 11:03
#146888
Στην αρχιτεκτονική i386 (όλες οι σύγχρονες "x86" CPU αυτήν ακολουθούν) το "paltry ring 0" είναι το most privileged level, όπου τρέχει ο kernel του λειτουργικού. Δεν υπάρχουν "negative rings of protection" https://en.wikipedia.org/wiki/Protected_mode
είναι το most privileged level, όπου τρέχει ο kernel του λειτουργικού. Δεν υπάρχουν "negative rings of protection" https://en.wikipedia.org/wiki/Protected_mode
- 10 Αύγ 2015, 11:43
#146891
η ιστορια εχει πολυ πλακα ομως
“The P6 family processors permit the starting address of the APIC registers to be relocated from FEE00000H to another physical address. This extension of the APIC architecture is provided to help resolve conflicts with memory maps of existing systems.”
– Intel SDM, c. 1997
A forgotten patch …
… to fix a forgotten problem …
… on a tiny number of legacy systems …
… 20 years ago.
4 bits …
to take control of the most
privileged mode of execution
on the processor
...
0f 09 c7 05 14 00 01 00 ff 9a cf ff c7 05 10 00 01 00 ff ff a2 9f b8 00 f9 5f 1f ba 00 00 00 00 b9 1b 00 00 00 0f 30 eb fe
The Memory Sinkhole
8 lines, to exploit
Hardware remapping
Descriptor cache configurations
Instruction and data cache properties
Four execution modes
Four memory models
… and infiltrate the most privileged mode of execution on the processor
What do we do with this?
Unlock hardware
Disable cryptographic checks
Brick the system
HCF
Open the lock box
Or just install a really nasty rootkit
SMM Rootkit
With SMM execution, can install to SMRAM
Preempt the hypervisor
Periodic interception
I/O filtering
Modify any memory
Invisible to OS
Invisible to AV
Invisible to Hypervisor
“The P6 family processors permit the starting address of the APIC registers to be relocated from FEE00000H to another physical address. This extension of the APIC architecture is provided to help resolve conflicts with memory maps of existing systems.”
– Intel SDM, c. 1997
A forgotten patch …
… to fix a forgotten problem …
… on a tiny number of legacy systems …
… 20 years ago.
4 bits …
to take control of the most
privileged mode of execution
on the processor
...
0f 09 c7 05 14 00 01 00 ff 9a cf ff c7 05 10 00 01 00 ff ff a2 9f b8 00 f9 5f 1f ba 00 00 00 00 b9 1b 00 00 00 0f 30 eb fe
The Memory Sinkhole
8 lines, to exploit
Hardware remapping
Descriptor cache configurations
Instruction and data cache properties
Four execution modes
Four memory models
… and infiltrate the most privileged mode of execution on the processor
What do we do with this?
Unlock hardware
Disable cryptographic checks
Brick the system
HCF
Open the lock box
Or just install a really nasty rootkit
SMM Rootkit
With SMM execution, can install to SMRAM
Preempt the hypervisor
Periodic interception
I/O filtering
Modify any memory
Invisible to OS
Invisible to AV
Invisible to Hypervisor
- 10 Αύγ 2015, 11:45
#146892
Geo, δεν χρειάζεται... ;)
We are constantly hounded by the politically correct assholes...
Amen and a-women!
Amen and a-women!