are you planning to publish "token of hxp"'s solution? :D
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Hmmm I wasn't planning to, but if you have any questions just let me know.
- Još 4 druga odgovora
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It took me 48 hours to solve the token. Reversing AVR code is just the worst.
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That, and that SMC trick ;D
- Još 3 druga odgovora
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Congrats! Did you have a simulator for totallynotabadusb?
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Thx! Yes, based on https://github.com/jkmnt/avrvm & instrumented quite a lot. I skipped the USB parsing and called the usbFunctionWrite & friends directly with test data.
- Još 1 odgovor
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Hey! I accidently solved the USB sticks locally but not remotely

, because I was using python 2 pyusb, for some reason, it was leaking the flag 


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Wait, what? How? ;)
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Both AVR challenges were fun. We spent 5 extra hours on token just because we mixed up 0xaa and 0xdd. Then we reversed the HMAC-SHA1 and figured we might have mixed up key and message.
Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Tweet je nedostupan.
Čini se da učitavanje traje već neko vrijeme.
Twitter je možda preopterećen ili ima kratkotrajnih poteškoća u radu. Pokušajte ponovno ili potražite dodatne informacije u odjeljku Status Twittera.
) & r00timentary (6182 pts, beat us by 45 pts in last 20 minutes
)!
The tasks were great! And I'm really happy about my first blood on "token of hxp", and accidental solve on "Totally not BadUSB" (both AVR+USB)