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tylerl
tylerl
00:12
happy friday erryone
 
5 hours later…
Terry Chia
Terry Chia
04:49
> What x86 instruction has been used to allow access to extended memory without ever entering protected mode?
Any old school DOS people know the answer to this?
/cc @tylerl @RoryAlsop etc
 
2 hours later…
this.josh
this.josh
06:38
@AviD Not everyone was carrying around a computer will all their personal information connected to the internet 24/7
the propagation rate of malware was much slower and often required physical contact
hard drives were always full
this.josh
this.josh
06:53
@Iszi Yes your right. I was looking at a unsigned being treated as signed the other day and saw all those ones in my head. In my head anything with that many ones can't be a real positive number, so I tend to think of those as signed or error.
this.josh
this.josh
07:34
@TerryChia you mean from real mode? enable A-20
Terry Chia
Terry Chia
@this.josh Any specific instruction? It's a CTF challenge and I have absolutely no experience with DOS.
this.josh
this.josh
I seem to remember using the keyboard controller to change the A-20 line and allow reading of extended memory. It is the physical 20th bit of the address line that is gated to emulate earlier processors
kernelx.weebly.com/a20-address-line.html
looks like you have three options
using the system port looks good:
push ax
mov al, 2 out 0x92, al pop ax
whereas the others require the keyboard controller or BIOS to cooperate
 
3 hours later…
Karthik Rangarajan
Karthik Rangarajan
10:36
@ThomasPornin This looks like it could use some of your attention (unless it has been answered elsewhere or is more appropriate for crypto.SE)
0
Q: Does having multiple hash iterations of the same message weaken your original message security?

Alex RodriguezTake a hash function H() to be something like SHA-256 and message m. If you are given H(m) and H(H(m)), can you use this info to help derive m? Also interested in knowing how you analyze this problem to come up with your answer.

hash
I did think of flagging it as more appropriate for crypto.SE, but since I couldn't find that option when trying to flag, I just answered it.
 
2 hours later…
TildalWave
TildalWave
12:42
@LucasKauffman security.stackexchange.com/questions/48922/…
too strong?
 
1 hour later…
Lucas Kauffman
Lucas Kauffman
14:06
@TildalWave nope
 
2 hours later…
Terry Chia
Terry Chia
16:19
mobilespan.com/content/chrome-is-the-new-c-runtime
What the fuck?
Thomas Pornin
Thomas Pornin
17:02
@KarthikRangarajan Done. Although it would indeed be more appropriate on crypto.SE.
There is no "standard migration path" from security.SE to crypto.SE because the latter is still in beta.
The powers-that-be at SE don't allow such things.
But you can still flag "generically" with an explicit comment so that a human or scottish moderator reads it.
Lucas Kauffman
Lucas Kauffman
@ThomasPornin Scottish operators are not human :P?
@ThomasPornin u being the all knowing bear, any idea for this one? security.stackexchange.com/questions/48927/…
Thomas Pornin
Thomas Pornin
@LucasKauffman I have not encountered this specific situation (yet).
I would not be surprised if you could indeed block network traffic for some process with policy objects.
Lucas Kauffman
Lucas Kauffman
17:29
@ThomasPornin would a fresh wild salmon refresh your memory?
Rory Alsop
Rory Alsop
17:40
@ThomasPornin I'll send it over for you now :-)
Lucas Kauffman
Lucas Kauffman
I just realized that the guy posting that question is my project manager here in Norway xD
Rory Alsop
Rory Alsop
@LucasKauffman hahahahaha - small world
kalina
kalina
18:07
0
Q: Is it safe to drive a car that has got a broken suspension spring?

kalinaYesterday I was driving home from work and heard a loud noise which I can only really describe as a "clang". After looking at it today, it looks like the spring for the front left (passenger side) suspension has snapped at the bottom. Here is a picture of the damage: I've already had a couple...

suspension
you're all guys in here, one of you has to have some mechanical knowledge
copy
copy
Is it safe to ____ a _____ that has a broken _____? Likely not
I also don't see how the name of a C compiler describes a loud noise
kalina
kalina
...
you're such a geek
I said I need a mechanic
not a geek
geeks are not useful in this situation
copy
copy
You had that coming
TildalWave
TildalWave
18:28
@kalina Problem with driving such car is that you might give wrong impressions if it makes you wobble like a jelly each time you'd step on brakes.
kalina
kalina
from the short distance I've driven it so far
there was no wobbling when I stamped on the brakes
TildalWave
TildalWave
I'd avoid eye contact on red lights
kalina
kalina
the main issues seem to be sharp turning
like full lock/opposite lock
like if I pull off the street onto a driveway while going uphill
which I assume is the two parts of the spring rubbing against each other
TildalWave
TildalWave
what car btw?
kalina
kalina
ford focus first gen UK model
ie: driver on the right
TildalWave
TildalWave
18:32
well, I wouldn't drive it too much to avoid further damage, and easy on corners and bumps
and try not to get pulled over
kalina
kalina
I will just use my cleavage if I get pulled over
np
I have to go to work for Monday though
TildalWave
TildalWave
thanks for the info, now we know you have one
kalina
kalina
I have it booked it to get repaired Monday night
well, I'm dropping it off Monday night and being loaned another car for Tuesday
and then I get it back on Tuesday night
TildalWave
TildalWave
your garage doesn't offer replacement vehicle while yours is being serviced?
kalina
kalina
*scratches head*
11 mins ago, by kalina
well, I'm dropping it off Monday night and being loaned another car for Tuesday
it says they do just there
look, it says it
"being loaned another car"
"loaned another car"
"loaned...car"
"loaned"
"lo..."
"..."
AviD
AviD
19:08
nice, I walk in to the middle of a @kalina-snarkfest. Subtle.
kalina
kalina
that happened ages ago
this channel is just idle
Rory Alsop
Rory Alsop
@kalina quite a few of us are active in Mv :-)
kalina
kalina
@RoryAlsop so please to help
damsel in distress
Rory Alsop
Rory Alsop
@kalina reading your Q now
kalina
kalina
provide assistance
it has pictures and everything
the text is largely worthless, like most things I post
Rory Alsop
Rory Alsop
19:17
0
A: Is it safe to drive a car that has got a broken suspension spring?

Rory AlsopI would say this would be fine to drive slowly and carefully over short distances (I've had worse) - but things to be careful of: potholes speed bumps (seriously - watch out) cornering hard high speeds Also try and avoid braking or accelerating hard - gently come to a stop at lights etc as yo...

there ya go
it really doesn't look that bad - you basically just want to avoid anything that requires much movement in the front suspension
@kalina needs fixing, but is not a showstopper for short distances at low speeds
kalina
kalina
so... "drive like a girl"
the highest speed I'll be doing is ~50mph
Rory Alsop
Rory Alsop
@kalina hahahahaha
If you can do 50mph, but leave a lot of space between you and the car in front so you can brake gently, you should be fine
kalina
kalina
and that piece of road has a long left hand turn on it, which should take the weight off the front left anyway, surely
Rory Alsop
Rory Alsop
@kalina long left hand turn - a wee bit, but not really that much. Hard left turn at speed - much more so :-)
kalina
kalina
there are a lot of speed bumps on the way back though
is it bad enough that I should take another route home?
Rory Alsop
Rory Alsop
19:20
I would - yes. Speed bumps would be my main worry - or potholes if you have bad roads where you are
kalina
kalina
I usually avoid potholes
Rory Alsop
Rory Alsop
Also - just noticed your new avatar. Who is zis? She doesn't look like a pony
kalina
kalina
this is my old avatar
nomination phase starts in a couple of days on gaming
and I didn't want people to be distracted by the pony
I doubt I'll get to join the blue team though
Rory Alsop
Rory Alsop
@kalina blue team? Is that what the mods are called there?
kalina
kalina
no that's me avoiding stating things in obvious terms
since said thing hasn't been annouced
Rory Alsop
Rory Alsop
19:25
oh - sorry, you've lost me then
@kalina I'm not yet even at 1k on gaming. I tend to get games well after they are released so every question I need to ask is already on there :-)
kalina
kalina
you only need 150 rep to vote
AviD
AviD
@this.josh I was referrring to your statement that "back then Most software was widly vulnerable", which is different from now, how?
AviD
AviD
20:08
anybody know if this devnull-as-a-service.com is purely humour, or if they are really trying to dupe the clueless?
Rory Alsop
Rory Alsop
@AviD Definitely humour. I like it
AviD
AviD
I thought so, I wasnt sure.
As parody it is great, as troll it is not too surprising.
so, thanks to @Iszi, I'm catching up on Infosec Reactions. I've gotta say, it's really gone down hill.
Most of the first few pages dont make any sense, a lot are clueless, and most of the rest are either way too specific or just not amusing at all.
Rory Alsop
Rory Alsop
20:41
I only ever see the ones that get posted in here, so generally good:-)
 
2 hours later…
tylerl
tylerl
22:54
Dear Mr. Ben Gillbanks author of the TimThumb plugin: Thank you for being responsible for approximately 80% of all exploited Wordpress sites across the Internet and keeping me well-employed.

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