October 17, 2017 Flare-on 2017 #8: flair.apk This is an Android APK, so first up, we need to decode it. Since an APK is just a zip, we could just unzip it, but that leaves quite a few encoded files inside; so using Apktool is a better... ctf flareon4
October 17, 2017 Flare-on 2017 #7: zsud.exe This challenge is an awesome Single-user dungeon playing in the offices of Mandiant, part of the company organising Flare-on. When started, it shows some awesome ASCII art: ctf flareon4
October 17, 2017 Flare-on 2017 #6: payload.dll The file is a DLL and should be started as such. The file contains a small hint on how it should be used in a string: ctf flareon4
October 17, 2017 Flare-on 2017 #5: Pewpew boat! Pewpewboat was one of the most fun challenges so far! The executable provided is a 64-bit Linux executable (the reason for 64-bit will be apparant later), which is the game Battleship. You enter coordinates in a prompt which consist of... ctf flareon4
October 17, 2017 Flare-on 2017 #4: notepad.exe Notepad, when you open it, is just that: Windows notepad. But quick examination shows that the entrypoint of this executable is moved to near the end of the file at 0x1013a00, which is suspicious. ctf flareon4