yescrypt_crack - Yescrypt Hash Cracker

[cyclone]

Title: Yescrypt Hash Cracker
Author: cyclone
URL: https://github.com/cyclone-github/yescrypt_crack
Description:

./yescrypt_crack.bin -h hash.txt -w wordlist.txt

 -------------------------------------------------- 
|            Cyclone's Yescrypt Cracker            |
| https://github.com/cyclone-github/yescrypt_crack |
 -------------------------------------------------- 

Hash file:      hash.txt
Total Hashes:   2
CPU Threads:    16
Wordlist:       wordlist.txt
2026/08/08 11:04:49 Working...
$y$j9T$z7lNWyBfW4ZruGHCsFzDz/$Sz1GtrDDnsf0KfUE8mQHNJqGyG32TDWC287DdU97dz.:cyclone123
$gy$j9T$zHbAdM1G1TomuQ6P6lRwc.$kTKZeBwUiSlCcxHfPQuzczMUxeNgp0LaK2LbsAK8KO/:cyclone123
2026/08/08 11:04:49 Finished
2026/08/08 11:04:49 Cracked: 2/2 23.51 h/s 00h:00m:00s

Info:

I wrote this tool since yescrypt has become the default shadow hash for many popular linux distros such as Debian, Ubuntu, RHEL, Fedora, Arch, etc, and due to the very limited hash cracking tools that supported yescrypt.

Supports both yescrypt and gost-yescrypt.

Since yescrypt_crack is written in pure Go, it easily compiles and runs on just about any OS and architecture such as Intel/ARM, Linux, Windows, Mac.

It is worth noting that JtR can be faster than yescrypt_crack, so YMMV.

Example hash:plain:

$y$j9T$z7lNWyBfW4ZruGHCsFzDz/$Sz1GtrDDnsf0KfUE8mQHNJqGyG32TDWC287DdU97dz.:cyclone123
$gy$j9T$Mq.X1lTWvTD74i0lyu6lC0$11n1S4OQtGaonRa4j4y9FsY.DnZUDwBFGKyzH2J/ry.:cyclone123

Supported options:

-w {wordlist} (omit -w to read from stdin)
-h {yescrypt_hash}
-o {output} (omit -o to write to stdout)
-t {cpu threads}
-s {print status every nth sec}

-version (version info)
-help (usage instructions)

./yescrypt_crack.bin -h {yescrypt_hash} -w {wordlist} -o {output} -t {cpu threads} -s {print status every nth sec}

./yescrypt_crack.bin -h yescrypt.txt -w wordlist.txt -o cracked.txt -t 16 -s 10

cat wordlist | ./yescrypt_crack.bin -h yescrypt.txt

./yescrypt_crack.bin -h yescrypt.txt -w wordlist.txt -o output.txt

Credits:

• yescrypt_crack tool was written by cyclone in pure Go
• yescrypt_crack uses Solar Designer's yescrypt-go implementation: https://github.com/openwall/yescrypt-go
• The yescrypt algo was written by Solar Designer: https://www.openwall.com/yescrypt/

Changelog:

• https://github.com/cyclone-github/yescrypt_crack/blob/main/CHANGELOG.md

Compile from source:

• If you want the latest features, compiling from source is the best option since the release version may run several revisions behind the source code.
• This assumes you have Go and Git installed
  • git clone https://github.com/cyclone-github/yescrypt_crack.git # clone repo
  • cd yescrypt_crack # enter project directory
  • go mod tidy # download dependencies
  • go build -ldflags="-s -w" . # compile binary in current directory
  • go install -ldflags="-s -w" . # compile binary and install to $GOPATH
  • ./yescrypt_crack -h {hash file} -w {wordlist file} -t {CPU threads to use (optional)} # run yescrypt_crack

[cyclone]

Source code v0.2.0; 2025-03-06 uploaded to GitHub.
https://github.com/cyclone-github/yescrypt_crack

[cyclone]

Release v0.3.1; 2026-08-08
https://github.com/cyclone-github/yescrypt_crack/releases/tag/v0.3.1

add gost-yescrypt support