Notices by ✧✦✶✷Catherine✷✶✦✧ (whitequark@mastodon.social), page 12

@foone and the primer is DDNP, too!

apparently the only way to get the JavaScript engine to run memcmp() on two typed arrays is...
...
...
to use IndexedDB. which provides a comparison operator. for typed arrays. in the Indexed-fucking-DB namespace. `indexedDB.cmp`. 🤡
https://stackoverflow.com/questions/21553528/how-to-test-for-equality-in-arraybuffer-dataview-and-typedarray

@foone only the ones from the US!

"notably, nepetalactones can repel insects with efficiencies comparable to the synthetic repellent N,N-diethyl-meta-toluamide (DEET)" holy shit??? https://www.science.org/doi/10.1126/sciadv.aba0721

nepetalactone is THIS EFFECTIVE?! https://www.sciencedirect.com/science/article/abs/pii/S0031942210003729

I finally did it!!!

a complete FPGA toolchain (synthesis, placement, routing, and programming) running entirely in the browser

https://yowasp.org

@mntmn so many

*placing my bicycle, upside down, closer to my working desk, booting my headmate's windows desktop, plugging a small $120 black box into the bike, and running extremely sketchy software to update and configure its firmware*

where did my life go so wrong

what i want to do is to switch the unit display from miles to kilometers

aside from the ~$250 (new) price of the communication adapter, which i am SO taking apart, the fucking bicycle firmware configuration software uses so many anti-RE tricks you would think you are looking at a Korean MMORPG

it installs a kernel driver hooking the internal kernel structures to hide the process that they somehow got Microsoft to sign

then it use some homegrown obfuscation to hide the .NET method code by hooking calls in mscoree.dll

I... this thing... has... not one but two rechargeable batteries? Two-cell fucking rechargeable batteries? With a balancing input? What drugs are they on?

back side pic:

... well I will be motherfucking damned

what on earth am I even looking at

why is _this_ inside the box. what the ever living fuck is this

fuck this thing so hard

the label covers up the unique serial number and barcode that I don't wanna publicly flash, because *of course* it is serialized and laser marked

if it also turns out to have intrusion detection and battery backed RAM I will be so mad

(fuck you Shimano)

the wire communication on the bike itself is _I think_ unencrypted and I know how the USB requests to the controller look like (very simple) so I should be able to mostly ignore the existence of the reviled Renesas thing and just black box RE how it converts USB into electric wire, if I decided to do it

the WLCSP ASIC is labelled EF71XW1, which doesn't have any hits. I know this is some disgusting Renesas device based on firmware analysis. I fucking hate Renesas. I cannot put into words how much I hate Renesas. So of course it is Renesas

it seems to have exposed JTAG, so after I'm done doing what I want with the bike I might plug it into Glasgow and see if I can get at least an IDCODE out of it. of course actual debug is almost certainly impossible

I guess those aren't batteries but supercaps, four cells of them at 2.5 V, and the balancing input is needed because it's really bad to reverse polarity on supercaps. that sort of makes sense I suppose. what are they doing that needs _that much_ current

NO ONE:

Shimano: EncryptedLogFileWriter.NoEncryptMode

well at least the god damn thing works with my bike

(that's the drivetrain and the battery; I'll need to swap two of the powerline I-can't-believe-it's-not-CAN connectors to get the display configuration)

I mean not that YesEncryptMode would help a whole lot