If you have a different compression format (like .7z or .xz ), you can pipe the output directly into Hashcat using the standard input ( - ): 7z e -so my_huge_list.7z | hashcat -m 0 hashes.txt - Use code with caution. Copied to clipboard
7z x -so wordlist.7z | hashcat -a 0 hash.txt -
Use compressed wordlists primarily for heavy, iteration-dense hashing algorithms where GPU computing time outweighs I/O read time.
Problem: The candidate list displays strings like $HEX[0e21290cb487a80c321...] rather than plain words. hashcat compressed wordlist
Streaming a compressed wordlist introduces a classic computing trade-off: The Pipeline Bottleneck
If you must use .zip , ensure you are compressing with the algorithm (the default in most tools). Uncommon compression methods like LZMA or BZip2 inside a .zip container will fail to be recognized by Hashcat.
Very large compressed files may require substantial system RAM for indexing during the initial load phase. 5. Conclusion If you have a different compression format (like
zcat anchor_words.txt.gz | hashcat -m 1000 -a 0 hashes.txt -r rules/best64.rule Use code with caution. Advanced Alternative: Hashcat .hcstat2 Files
Solution: Convert the dictionary to gzip format. The same dataset compressed with gzip will likely work without error. Stick to gzip for all wordlists larger than 5 GB.
Hashcat does natively support decompression. You cannot do this: hashcat -a 0 hash.txt my_wordlist.7z (This will fail spectacularly.) resulting in zero successful cracks.
For RAR files (often used for large breach compilation lists), use unrar (install via unrar-free or rar ).
The zcat utility reads compressed files and writes the uncompressed content directly to the standard output. zcat passwords.txt.gz | hashcat -m 1800 hashes.txt Use code with caution. 2. Using Bzip2 ( .bz2 )
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Explanation: This is expected behavior—it is not a failure. Hashcat must read through the entire compressed stream once to build its dictionary cache and index the positions of each line. The caching duration is a function of file size and disk speed. Patience is required.
Hashcat does not natively decompress files like .zip , .rar , or .tar.gz within its core arguments. If you pass a compressed file directly to Hashcat, it will treat the compressed binary data as literal password candidates, resulting in zero successful cracks.