Hacklu CTF 2020

faas 1

Sold:	2 times
Type:	pwn
Risk:	Mid
Seller:	Sceptic

For all them earnings in crypto, we need huge amounts of computation power. Preferably, it's not the power we pay for that we are using, of course. We started building a hardware-less emulation and fuzzing platform to fuzz all them firmware images without requiring any hardware.
You will have to supply all the juicy hardware behavior yourself, but remember: You can fuzz everything now!

nc flu.xxx 20015

Download challenge files

Challenge symbol files here

The market is closed. You cannot submit solutions anymore.

Announcements (4)

2021-10-31 10:52:31

More things are coming to make your life easier with faas: We got symbols (for firmware and harness) now -> Find them in the challenge descriptions
2021-10-31 09:31:47

This may help you figure out how to boot the firmware: https://www.st.com/resource/en/reference_manual/cd00240193-stm32l100xx-stm32l151xx-stm32l152xx-and-stm32l162xx-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf
2021-10-31 08:45:20

Our intern did some reversing of the faas binary and found that playing with the data structure at 0x8160 helped him get started.
2021-10-30 18:17:15

We have a fresh set of pwning investment opportunities for you to jump on. Don't hesitate too long, the race for two stages is on!