ELF32 downloader w/CLI args

[dominikfhnw]

Entry Info

• Date: 17.1.2026
• BGGP Challenge: 5+6 or 4+6, depending on CLI arguments
• Name: dominikr
• Contact Info: Discord dominikr, github dominikfhnw
• Online Presence: -
• Writeup Link: https://github.com/dominikfhnw/bggp6-writeup/tree/main/download

File Info

• Target File Type: ELF/Linux x86 32bit
• Target File Size: 45 bytes
• SHA256 Hash: bcd347dcf92545d711ef8d8a11b33ae10711bc6bd87d81f867f0dce9106f21a4

File Contents

f0VMRgEAAAAAAAAAALALPQIAAwAZsAs9GbALPQQAAABeWYnhjRS0W82AIAAB

Environment Info

Target Software and Version

Linux x86 32bit (or 64bit w/32bit support enabled).

Environment Setup

• Should work on any recent-ish Linux version.
• Requires curl in /bin/curl.
• Mainly tested on Ubuntu 22.04

Additional Info

Copy the file over to any modern-ish x86/x64 Linux distribution, and make it executable with chmod +x.

BGGP5+6

$ ./argv /bin/curl -L https://binary.golf/6/6
Another #BGGP6 download!!!!!! Hi @binarygolf https://binary.golf/6

BGGP4+6:

$ ./argv /bin/cp -v argv 6
'argv' -> '6'

See the writeup for more info

[netspooky]

hahah yes this is a bit cheeky, but I'll give it to ya. Thanks!

https://github.com/binarygolf/BGGP/blob/main/2025/entries/dominikr/dominikr.elf32.download-with-args.md

Verification

• Reviewer: netspooky
• Review Date: 2026-04-06
• SHA256: bcd347dcf92545d711ef8d8a11b33ae10711bc6bd87d81f867f0dce9106f21a4
• Score: 4819 [ Base: 4051 (4096 - 45) +256 (BGGP4) +256 (BGGP5) +256 (Writeup) ]
• Note: works as is

$ chmod +x dominikr.dl.args.elf32

$ ./dominikr.dl.args.elf32 /bin/curl -L https://binary.golf/6/6
Another #BGGP6 download!!!!!! Hi @binarygolf https://binary.golf/6

$ ./dominikr.dl.args.elf32 /bin/cp dominikr.dl.args.elf32 6

$ ls -lah 6 dominikr.dl.args.elf32
-rwxrwxr-x 1 user user 45 Apr  6 13:18 6
-rwxrwxr-x 1 user user 45 Apr  6 13:14 dominikr.dl.args.elf32

$ sha256sum dominikr.dl.args.elf32
bcd347dcf92545d711ef8d8a11b33ae10711bc6bd87d81f867f0dce9106f21a4  dominikr.dl.args.elf32