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Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

Tayter Swift posted:

Security
Hardware for the
Internet of
Things

mods

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Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope
our tester was trying to connect to a server with winscp. it gave a warning about changed fingerprint and posted a screenshot "the new fingerprint is wh:at:ev:er:th:ef:uc:k"

i tried if my connection still worked. it did.

so i tried to find the fingerprint. maybe i'm just dumb, but i just can't find it anywhere in either winscp or putty ui.

putty stores some super loving long hex string in the registry that looks nothing like the one shown in the dialog.

i finally found out the fingerprint by enabling logging in winscp and looking at the log file. it didn't match

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

James Baud posted:

You're taking that too literally, the fingerprints are hex, unless that's a really dumb winscp placeholder message.

yes, the fingerprint wasn't literally whateverthefuck, i'm not going to transcribe some screenshot for a yospost

the point was that as far as i can tell, there is no way of finding out the saved fingerprint for a given server so that i can compare them

well, with putty you can get some really long hex string from the registry, but its way too long and it's not in the same format as the one in the dialog. (two hex digits, colon, two hex digits, colon etc)

so the warning is "YOUR poo poo MIGHT HAVE BEEN HACKED, check this fingerprint:" and there is no way to get a known-good value from another instance of winscp or putty to compare them.

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

minivanmegafun posted:

storing that in the windows registry sounds like something putty would do

yes, putty definitely stores the known_hosts equivalent in the registry.

on linux, i know that i can run "ssh-keygen -l -f ~/.ssh/known_hosts" to get the colon-delimited fingerprint, but i have no idea how to get putty to give me that information.

Wheany
Mar 17, 2006

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Doctor Rope

jre posted:

gently caress, that looks good. How long has that existed ?

that does look good, but i don't feel like paying over $50 per year(?) to replace putty (and to a lesser extent, winscp)

Wheany
Mar 17, 2006

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Doctor Rope

jre posted:

If you are using this professionally why would you even blink at $50 for something that will improve your productivity

i'm not that sure that a better ssh client would improve my productivity very much.

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

negromancer posted:

if you don't think mobaxterm isn't leaps and bounds ahead of fuckin putty, I don't know what to tell you.

Wheany posted:

that does look good, but i don't feel like paying over $50 per year(?) to replace putty (and to a lesser extent, winscp)

:confused:

Wheany
Mar 17, 2006

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Doctor Rope

negromancer posted:

If you have more than 12 sessions open you either need to start using config management or screen sessions there buddy.

i thought that it meant that you can only have 12 saved sessions, not 12 sessions open at the same time.

Wheany
Mar 17, 2006

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Doctor Rope

Progressive JPEG posted:

listen the terminal software is only a drop in the bucket when youre on windows

and also if you spend so much time using ssh that the difference between using putty and using mobaxterm is significant, you dun goofed

Wheany
Mar 17, 2006

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Doctor Rope

Truga posted:

honestly, this is great

brb dumping all blu ray encryption keys

same, except netflix, itunes, youtube and amazon

Wheany
Mar 17, 2006

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Doctor Rope
https://twitter.com/sweatyinbkk/status/819072551687045124

ticketmaster about not using https:

Wheany
Mar 17, 2006

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Doctor Rope

ymgve posted:

I totally trust that the general populace that have stoves that flash 12:00 is able to configure their washer with the right address just so it can report when the power goes out

which is why some of them just connect to any open network automatically :)

Wheany
Mar 17, 2006

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Doctor Rope

BangersInMyKnickers posted:

I think the likely outcome is that for the sake of security the zigbee/whatever radio module will be kept as its own discrete component from the main control/firmware of the device with extreme limits on what can be passed between the two effectively neutering any ability to compromise it in a way beyond blasting garbage on the wireless link

on one had, we could separate these two components for security purposes. on the other we could combine them and save fractions of a penny per device.

Wheany
Mar 17, 2006

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Doctor Rope

ErIog posted:

Jesus gently caress this derail is getting so tiring. The whole idea is that if the device knows some poo poo's going down with the electrical grid that choices will be made with regard to power consumption. The whole thing is to save on power when it's most loving expensive. The whole thing is meant to save everybody money. Whether those savings actually trickle down is something I really doubt, but it's a possibility.

Putting another device outside the device that needs to make decisions won't loving do anything. The device itself still needs to use the information to make decisions so it's still going to need a tiny chip reading the input and doing that calculation the same as is already happening. In your scenario we don't shave fractions of a penny. We double the cost because now you need your washer to interface with a separate thing that then interfaces with a packet from the electrical grid saying, "yo poo poo's gently caress, spin cycle later, bitch or enjoy the extra $1.00 on your electric bill" in the name of some nebulous concept of security.

That RJ45 jack isn't doing ethernet. It's not a loving botnet. Pull your heads out of your asses for just a moment. IoT is poo poo. This has nothing to do with IoT. It has to do with everybody trying as hard as loving possible to save :10bux: and electricity on every side.

I know this thread is for insufferable assholes who think they know better (me included), but please everybody just listen to Fishmech and Shaggar for once. One's good cop, one's bad cop.. they both agree!

nice meltdown

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

Munkeymon posted:

android kinda does that as of whenever they rolled out that material design stuff I think

idk if it still works that way if you ask for an old api layer because I bet older apps would just poo poo themselves because android

can confirm that before it sent all my data to china, android asked for authorization first to access the photos, then to access the camera before i took a selfie to change into animu.

Wheany
Mar 17, 2006

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Doctor Rope

fishmech posted:

the point of doing a ddos is that you do it from all over the place to try to make it hard for your target to avoid.

it's so much the point that it's the first d of ddos.

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

ate all the Oreos posted:

for sale: used jet fuel, unable to melt steel beams

:smith:

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

Shaggar posted:

I bet the software or hardware they use has a way to sign packages to prevent tampering but nobody has ever used it.

oh no, i bet they used it a few times at first.

but it was too cumbersome or someone forgot to do it, and it seems to work just fine.

then that guy taught the new guy to do it and then the old guy left and now nobody knows that you can sign the packages.

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

Phone posted:

what's the thread favorite for a password manager these days?

keep rear end

Wheany
Mar 17, 2006

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Doctor Rope
and by favorite, i mean "the first one i tried"

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

vOv posted:

i'm the qqqqqqqqqqqqqqqqq

weren't you banned?

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

flosofl posted:

Jesus, shut the gently caress up. You're gonna get the thread closed.

Oh no

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

Jabor posted:

in general i'd expect good pedagogy for teaching hacking to start with "here's how we used to break stuff back in the day", because the fundamentals of getting control flow out-of-the-expected-path-somehow are still pretty much the same. then once you've mastered the basics it moves on to "here's what people came up with to make these things harder, and here are the more advanced techniques we use to defeat that and gain control anyway"

do operating systems provide all the advanced protections "for free" to older programs too, or do you need to use newer libraries/recompile the programs to take advantage of them.

i'm just wondering if it's actually "back in the day" or can you still pop vulnerable software with the easy tricks if they haven't been changed in the last 15 years

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

ate all the Oreos posted:

im updating the firmware on a point of sale system right now. the new firmware came in the form of a zip archive on some rando dropbox, and i upload it by running an anomalous bat file that, so far, has just printed an endless stream of periods to the console window

:woop:

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

ate all the Oreos posted:

oh hey it's checking signatures that's nice

the signatures were included with the zip it uploaded so it's completely worthless but it's a nice try, good job

e: the signatures failed lol

e2: failed signatures did nothing, it kept right on going :toot:

:woop::woop:

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope
windows 10 home apparently doesn't come with bitlocker. how bout that.

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope
i thought that maybe i should enable disk encryption on my laptop, but it has windows 10 home on it and welp

Wheany
Mar 17, 2006

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Doctor Rope

Cardboard Box A posted:

Windows 10 Home to Pro upgrade costs $100 USD, which is 50% off the MSRP of $200 USD.



It's not 3 lattes but it's still not a bad price if you really need bitlocker.

well on one had, i don't really need bitlocker, but on the other, doesn't everybody need it? like it probably shouldn't be a "pro" feature in cyber year 2015

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

cinci zoo sniper posted:

yeah i desperately need to encrypt my anime trove and configuration files for counter strike: global offensive

uhhuh

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

cinci zoo sniper posted:

don't get me wrong, i encrypt my portable electronics that can realistically be lost somewhere. i dont see much benefit for doing so with my personal desktop computer i play video games on at home

hmmm

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope

Wheany posted:

well on one had, i don't really need bitlocker, but on the other, doesn't everybody need it? like it probably shouldn't be a "pro" feature in cyber year 2015

looks like windows 10 home at least supports bitlocker-to-go, at least when the usb drive has been encrypted in windows 10 pro.

Wheany
Mar 17, 2006

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Doctor Rope

flakeloaf posted:

haw haw i bet teh secfuck has a smaller secfuck inside guys

Wheany
Mar 17, 2006

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Doctor Rope
"i have a really simple system: for banks and email and facebook i have good unique passwords that i remember. for everything else i just use the same password"

i have an even simpler system: just use a password manager for everything

Wheany
Mar 17, 2006

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Doctor Rope

Chalks posted:

What are people's thoughts on simply using browser password storage + a master password? That's presumably the same as using an external dedicated password manager since the password database is encrypted.

i just let my browser remember my passwords since i think the realistic threat model is more "some skiddie breaks radium's code and gets my password" and less "ve haf vays of makink you talk, mr. bond"

Wheany
Mar 17, 2006

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Doctor Rope

Cocoa Crispies posted:

even warning you that it's a non-https connection to that server is a very recent thing

https://twitter.com/internetofshit/status/847444546741047297

Wheany
Mar 17, 2006

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Doctor Rope

CrazyLittle posted:

yes because browser stores are notoriously insecure. Firefox used to store in clear text

the number 1 reason you're using randomly generated passwords and using a password manager is when a random site gets its login information leaked, all your logins everywhere are not immediately hosed.

if you have malware on your computer that can leak your browser's password database, you're already dead.

if your browser vendor's cloud sync platform gets popped, welp,

Wheany
Mar 17, 2006

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Doctor Rope

pseudorandom name posted:

Firefox Sync used to use strong crypto which required you to pair new devices with an existing client to do the key exchange, but users were too stupid to understand the concept and thought Sync was a backup mechanism and got mad when they lost everything when they deleted all their Firefox installs

so Mozilla changed it to just derive the key from your Sync password because we can't have nice things

i'm not too stupid to understand the concept, but i wanted to sync my bookmarks from my home computer to my work laptop and it told me to type the code that's displayed on my home computer's screen (or other way around, i don't remember). anyway it was unusable unless i remembered to specifically prepare for the sync process

Wheany
Mar 17, 2006

Spinyahahahahahahahahahahahaha!

Doctor Rope
Today in the secfuck thread: "if you suddenly get weird new popups in your browser, be sure to click on them"

Wheany
Mar 17, 2006

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Doctor Rope

Dylan16807 posted:

clicking inside a web page can't really do anything that the web page couldn't already do

how can the user tell the difference between a safe thing to click and a non-safe thing?

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Wheany
Mar 17, 2006

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Doctor Rope
i got 80085 points

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