On Monday we became a tenant at the shared office provider WeWork. According to their website, “WeWork is a global network of workspaces where companies and people grow together.” We needed something more flexible while our new corporate office is being...
We began with no hint, and the file ‘cloudfs-31c938df3531611b82fddf0685784a2b67373305ec689015f193a555b756beb2’. The command file tells us that it is compressed data. $ file cloudfs-31c938df3531611b82fddf0685784a2b67373305ec689015f193a555b756beb2...
The annual NYU Polytechnic School of Engineering Cyber Security Awareness Week (CSAW) Capture The Flag (CTF) competition online qualifiers were held September 19-21, 2014. This is a writeup of one of the Exploitation challenges we solved: "saturn". The...
We are given a file, “task.exe,” and told that “smthg wrong with this env.” Running `file` tells us that this is not an EXE at all: it is an x86_64 ELF. We try to run it and quickly determine it expects a certain command-line...
The description of the task is that the program has been stuck “in a blender.” Upon opening the program in IDA Pro, it is clear the bytes have been modified, since there are nonsensical instructions and a large block of undecipherable bytes. It is...
If you know of a link we have missed, please let us know in the comments and we will add it shortly. Thanks! Metal Gear Felix http://tasteless.se/2014/01/phd-ctf-quals-2014-rbox-and-metal-gear-felix-writeup/ mp3 me...
