This year’s edition of the Plaid Party Planning saga explores a type confusion in OCaml. The bug results from two OCaml performance optimizations interacting poorly.

It occurred to me about a month ago that I never published author writeups for the “Toaster Wars: Going Rogue” CTF problems from PicoCTF 2017 and PlaidCTF 2017, which is particularly troubling since one of them wasn’t actually solved in contest! To remedy this, and in celebration of the release of a new game in the series that inspired these problems later this week, I’ll be posting writeups for all of the Toaster Wars problems over the course of the week.

For day four, I’ll be talking about the Blazing Flag from PlaidCTF 2017.

It occurred to me about a month ago that I never published author writeups for the “Toaster Wars: Going Rogue” CTF problems from PicoCTF 2017 and PlaidCTF 2017, which is particularly troubling since one of them wasn’t actually solved in contest! To remedy this, and in celebration of the release of a new game in the series that inspired these problems later this week, I’ll be posting writeups for all of the Toaster Wars problems over the course of the week.

For day three, I’ll be covering the first of the three Toaster Wars problems from PlaidCTF 2017: the Light Flag.

It occurred to me about a month ago that I never published author writeups for the “Toaster Wars: Going Rogue” CTF problems from PicoCTF 2017 and PlaidCTF 2017, which is particularly troubling since one of them wasn’t actually solved in contest! To remedy this, and in celebration of the release of a new game in the series that inspired these problems later this week, I’ll be posting writeups for all of the Toaster Wars problems over the course of the week.

For day two, I’ll be talking about the harder Toaster Wars problems from PicoCTF 2017: TW_GR_E3_GtI and TW_GR_E4_STW.

It occurred to me about a month ago that I never published author writeups for the “Toaster Wars: Going Rogue” CTF problems from PicoCTF 2017 and PlaidCTF 2017, which is particularly troubling since one of them wasn’t actually solved in contest! To remedy this, and in celebration of the release of a new game in the series that inspired these problems later this week, I’ll be posting writeups for all of the Toaster Wars problems over the course of the week.

I’ll be going in order, so to start off, today I’ll be talking about the first the first two problems from PicoCTF 2017: TW_GR_E1_ART and TW_GR_E2_EoTDS.

Google CTF has come to a close, and with a very narrow victory on our part. As we decompress and mull over a set of excellent problems, we will post a few writeups of the ones we solved. Here is a writeup for the web problem “Cat Chat.”