Last weekend was CSAW CTF, the fifth time I’ve played with b01lers. This year for the first time ever, b01lers has qualified for finals! I’m really proud of the team and the new officers for making this happen. As far as I am aware, we have qualified as a team for only one other finals, DefCamp 2017, so this is a really impressive achievement.

I’m half making a note to self. I recently reinstalled Debian on my desktop (I had switched from Ubuntu 20.04 to Debian Sid on my laptop earlier this summer), but my laptop does not have a discrete GPU. My desktop does! All actually went well the first time I installed.

This post plus the code mentioned in it is available here.

rsync is incredible, and you should use it! But, 95% of the time what I need to do with a utility like rsync is to back up my Downloads folder to the large HDD on my desktop before I distro-hop (yes, I’m that person). Everything else is backed up to github anyway, because I basically do nothing but code on my computers!

I did some work this week converting some types that were missing in angr from their C definitions in glibc into a type specification in Python that can be used in angr for type analysis and more importantly, to make writing SimProcedures easier.

A CTF host’s worst nightmare is unintentionally not including all the files needed for competitors to actually solve a challenge. It’s annoying for hosts, annoying for competitors, and worst of all is super easy to avoid.