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Written by @LMBishop, also hosted at leonardobishop.net. This challenge is based on an online "gradebook", where students can log in, view their grades for their enrolled classes, and submit feedback for each one. Included in this challenge is a URL to the use...

Written by @flaberpengu. Challenge available on Github. This is an easy cryptography challenge focused on RSA. The first thing to note is that we are given n1, n2, d1, d2, e but no designated ciphertext, which is unusual. The first thing I tried was calculatin...

Written by @jb007db5. Men At Work was a quite difficult OSINT challenge that was a great example of using multiple people's knowledge and observations to form a solve. The correct solution required dropping a pin on a map for where the photo was taken and spec...

Written by @palee.. Also hosted on Github. hehexd was a misc challenge during the CSAW '25 finals. When i first installed the files and unzipped it I was initially shown this monstrocity of a file hierarchy. └── a ├── a │ ├── a │ ├── b │ ...

Written by @mxg586 (Misha), also hosted on my blog This rev (reverse engineering) challenge consists of an x86_64 executable file called rusted_oracle Here's the output when you run it (INPUT is when the program asks for input): A forgotten machine still ticks...

Written by @mxg586 (Misha) This is a misc challenge which has a solution which is not like any challenge I have seen before. The challenge uses a web-app written in Go which allows you to enter one or two strings and performs an operation on those strings. Th...