CRC32 (Cyclic Redundancy Check) is a 32-bit checksum primarily used for error-detecting in digital networks and storage devices
Here is where most CRC32 cracking attempts go off the rails.
hashcat -m 11500 -a 3 crc32_hash.txt ?d?d?d?d
If the original input is short (<6 chars), you can brute force with pure Python: