Entry Info

• Date: 28th Nov 2025
• BGGP Challenge: 1 + 2 + 3 + 4 + 5 + 6!
• Name: Matt Pass
• Contact Info: @mattpass
• Online Presence: x.com/mattpass
• Writeup Link: https://gist.github.com/mattpass/8b40b2e2b946f8bf7474a001b30f3a85

File Info

• Target File Type: Zip/Shell
• Target File Size: 179 bytes
• SHA256 Hash: c4945186aafdf344d47725bde235a3e5b14b97a2

File Contents

Y3AgJDAgWCYmZWNobyA0O2N1cmwgaHR0cHM6Ly9iaW5hcnkuZ29sZi81LzU7ZWNobyA2O2tpbGwg
LTExICQkICMKI1BLBQYAAAAAAAAAAAAAAAAAAAAAAQAyAAEAAAAAAAAAAAAAAAAAAAAABgVLUCMK
IyAkJCAxMS0gbGxpazs2IG9oY2U7NS81L2Zsb2cueXJhbmliLy86c3B0dGggbHJ1Yzs0IG9oY2Um
JlggMCQgcGM=

Environment Info

Linux, any

Target Software and Version

sh, unzip

Environment Setup

Base64 decode into a 6.zip and then run:

└─▶ ./6.zip
4
Another #BGGP5 download!! @binarygolf https://binary.golf
6
Segmentation fault (core dumped)

^ Covers BGGP 4 (replicates to file named X), BGGP 5, BGGP 6, BGGP 3 (crashes your Shell program, eg sh with seg fault)

└─▶ unzip -zq 6.zip
2

^ Covers BGGP 2

The file is also a palindrome which covers BGGP 1.

Additional Info

• None