Perl crasher

[dominikfhnw]

Entry Info

• Date: 8.1.2026
• BGGP Challenge: 3&6
• Name: dominikr
• Contact Info: Discord dominikr, github dominikfhnw
• Online Presence: -
• Writeup Link: https://github.com/dominikfhnw/bggp6-writeup/tree/main#perl-crasher

File Info

• Target File Type: perl script
• Target File Size: 29 bytes
• SHA256 Hash: 6e7ed92f3176bcb8c36a361bc9234b7b504bd35f9f45054d6ff19182cd2971f2

File Contents

REVTVFJPWXtibGVzc1tdfWRpZSQ9LGJsZXNzW10=

Environment Info

Target Software and Version

Perl version 5.6 - 5.42

Environment Setup

Tested on Perl for Linux. Perl for Windows, VMS, OS/2 etc not tested, but should work there too.

Either set executable flag and run with ./crash.pl, or with perl crash.pl

Alternatively, run it online: https://perlbanjo.com/d3909c6491

Additional Info

Expected output:

$ perl perl/crash.pl
60main=ARRAY(0x5555558ff4b8) at perl/crash.pl line 1.
Segmentation fault (core dumped)

Smaller 23-byte version (but without printing 6) is available under https://github.com/dominikfhnw/bggp6-writeup/blob/main/perl/crash2.pl

See writeup for more info

[netspooky]

Verified, thank you!!

https://github.com/binarygolf/BGGP/blob/main/2025/entries/dominikr/dominikr.perl.crash.md

Verification

Issue: #168

• Reviewer: netspooky
• Review Date: 2026-03-14
• SHA256: 6e7ed92f3176bcb8c36a361bc9234b7b504bd35f9f45054d6ff19182cd2971f2
• Score: 4579 [ Base: 4067 (4096 - 29) +256 (BGGP3) +256 (Writeup) ]
• Note: works as is

$ base64 -d <<< REVTVFJPWXtibGVzc1tdfWRpZSQ9LGJsZXNzW10= > bggp6.pl

$ sha256sum bggp6.pl 
6e7ed92f3176bcb8c36a361bc9234b7b504bd35f9f45054d6ff19182cd2971f2  bggp6.pl

$ perl bggp6.pl 
60main=ARRAY(0x59f7017564b8) at bggp6.pl line 1.
Segmentation fault (core dumped)