Hacker News: Graziano_M

New comment by Graziano_M in "An Interesting Find: STM32 RDP1 Decryptor"

Graziano_M — Tue, 03 Mar 2026 02:53:56 +0000

It's probably to keep the payload in SRAM for longer.

If it's the attack I believe it to be, basically it:

1. Acts as a debugger (core blocks touching flash) and writes a 2-part payload to SRAM.

2. Detaches the debugger, straps the boot pins to boot from SRAM (payload 1)

3. Resets the board via reset pin (keeping SRAM)

4. SRAM payload 1 runs (core blocks touching flash), configuring the FPB to 'overlay' the reset vector on flash with a pointer to payload 2

5. Flicks off the power just long enough for the hardware to reset, but not long enough for the SRAM to clear (this is where I think being cold helps).

6. Device boots 'unlocked' into 'flash', but the FPB hijacked the vector table and so the CPU immediately jumps to payload 2.

7. Payload 2 can now do whatever with flash (e.g. dump it out over UART or SPI)

New comment by Graziano_M in "Fix your tools"

Graziano_M — Sun, 22 Feb 2026 17:57:00 +0000

Weird. I happen to be watching Malcolm in the Middle and I find a link to Malcolm in the Middle

New comment by Graziano_M in "Paged Out Issue #8 [pdf]"

Graziano_M — Fri, 20 Feb 2026 17:01:44 +0000

Ah! I thought your wording was a hint (it's the viewer that thinks it's only 92 pages).

New comment by Graziano_M in "Paged Out Issue #8 [pdf]"

Graziano_M — Thu, 19 Feb 2026 16:08:30 +0000

Oh yeah. I have the paperback 'bible'. I don't think that that one is a polyglot, though.

New comment by Graziano_M in "Paged Out Issue #8 [pdf]"

Graziano_M — Thu, 19 Feb 2026 13:42:19 +0000

I feel like this tweet suggests that the PDF is a polyglot or an embedded second PDF.

https://x.com/gynvael/status/2024180784064598134

New comment by Graziano_M in "Vim 9.2"

Graziano_M — Sun, 15 Feb 2026 19:25:42 +0000

Yep! and I already do: https://github.com/Grazfather/dotfiles/tree/master/nvim/fnl

New comment by Graziano_M in "I fixed Windows native development"

Graziano_M — Sun, 15 Feb 2026 19:24:40 +0000

I literally came to post the exact same line as my indicator that this was AI-generated. I ctrl-f'd first and sure enough I'm not alone in using 'key insight' as the canary.

New comment by Graziano_M in "Vim 9.2"

Graziano_M — Sat, 14 Feb 2026 17:42:43 +0000

I wish they supported Janet

New comment by Graziano_M in "Skip the Tips: A game to select "No Tip" but dark patterns try to stop you"

Graziano_M — Fri, 13 Feb 2026 02:54:08 +0000

I try to 'punish' for these and tip less than I would normally.

New comment by Graziano_M in "Oxide raises $200M Series C"

Graziano_M — Tue, 10 Feb 2026 14:56:03 +0000

Is Jessie Frazelle still there? She is very impressive.

New comment by Graziano_M in "Zig Libc"

Graziano_M — Tue, 03 Feb 2026 17:05:02 +0000

Are you using an agent? It can quickly notice the issue and fix it. Obviously if it's trained on an older version it won't know the new APIs.

New comment by Graziano_M in "Zig Libc"

Graziano_M — Mon, 02 Feb 2026 23:00:45 +0000

You must have not tried this with an LLM agent in the past few months.

New comment by Graziano_M in "Defeating a 40-year-old copy protection dongle"

Graziano_M — Mon, 02 Feb 2026 19:00:50 +0000

What did the function that called into it do with the result? If it was a simple "if rv != 0xabcd goto fail" the patch could probably be simplified to just... nop a few bytes.

New comment by Graziano_M in "The WiFi only works when it's raining (2024)"

Graziano_M — Fri, 30 Jan 2026 15:03:38 +0000

In a very strange coincidence, I happened to read that first story in a book[1] I'm reading, just last night! What are the chances?

[1] https://debuggingrules.com/

New comment by Graziano_M in "Over 700k (UK) graduates out of work and claiming benefits, analysis suggests"

Graziano_M — Mon, 26 Jan 2026 21:00:26 +0000

I don't get it?

    707000 = 1.46x
    x = 707000/1.46
    x = 484247

707000-464272 is more than 200k

New comment by Graziano_M in "Anthropic's original take home assignment open sourced"

Graziano_M — Wed, 21 Jan 2026 13:40:54 +0000

I recognized the name and dug around too. I played DEFCON CTF with him back in the day!

New comment by Graziano_M in "Making Magic Leap past Nvidia's secure bootchain and breaking Tesla Autopilots"

Graziano_M — Thu, 08 Jan 2026 23:18:26 +0000

I hope Nvidia's new offerings (Orin, Thor, etc) don't have the same issue in their bootROM. That would be an incredibly expensive mistake.

New comment by Graziano_M in "My Snapdragon Dev Kit was healthy and working fine until a Windows update failed"

Graziano_M — Thu, 08 Jan 2026 01:30:36 +0000

Yeah, I think so. It's been ~25 years, and only while typing out that comment did I remember the error message and realize that's probably what I had done.

If I recall correctly, he ended up scrapping the drive.

New comment by Graziano_M in "Play Aardwolf MUD"

Graziano_M — Thu, 08 Jan 2026 01:12:45 +0000

I had a crappy computer with crappy internet back in the day. I didn't play Aardwolf, but I played another mud called Alter Aeon. I still have fond memory of it and check back in every few years.

New comment by Graziano_M in "My Snapdragon Dev Kit was healthy and working fine until a Windows update failed"

Graziano_M — Wed, 07 Jan 2026 03:47:41 +0000

I had a friend's dad's computer's HDD fail while I was installing Linux on it to show him it. That was terrifying. I still remember the error, and I just left with it (and Windows) unable to boot. Later my friend told me that the drive was toast.

Come to think of it, maybe it was me. I might have trashed the MBR? I remember the error, though, "Non system disk or disk error".