Using maskprocessor to generate rules

maskprocessor is a powerful tool and can be used in various ways, in this case: creating rules working with hashcat-legacy (CPU) or hashcat (OpenCL CPU/GPU).

Creating rules

Let's suppose you want to make a rule which adds 3 digits after each words of your dict, and save the rules in a file called “append_3_digits.rule”.

By hand

$ vi append_3_digits.rule
$0 $0 $0
$0 $0 $1
$0 $0 $2
$0 $0 $3
$0 $0 $4
$0 $0 $5
$0 $0 $6
$0 $0 $7
$0 $0 $8
$0 $0 $9
$0 $1 $0
$0 $1 $1
and so on...

As you can see, creating rules by hand could be very boring and time-consuming :p

Using maskprocessor

$ ./mp64.bin -o append_3_digits.rule '$?d $?d $?d'

maskprocessor allows you to easily and quickly generate rule files.

Syntax:

$ is the function to append a char
?d is the digits charset

Example Commands

Here are some example commands to enable you to generate common rules locally on your own computer.

Copy the appropriate set of commands for your operating system (32/64) bit.

32-bit

mp32.exe -1 0123456789 "^?1^?1^?1" -o Prefix-0-999.rule
mp32.exe -1 0123456789 "l^?1^?1^?1" -o Lower-All-Prefix-0-999.rule
mp32.exe -1 0123456789 "c^?1^?1^?1" -o Upper-First-Prefix-0-999.rule
mp32.exe -1 0123456789 "u^?1^?1^?1" -o Upper-All-Prefix-0-999.rule
mp32.exe -1 0123456789 "d^?1^?1^?1" -o Double-Word-Prefix-0-999.rule

mp32.exe -1 0123456789 "$?1$?1$?1" -o Suffix-0-999.rule
mp32.exe -1 0123456789 "l$?1$?1$?1" -o Lower-All-Suffix-0-999.rule
mp32.exe -1 0123456789 "c$?1$?1$?1" -o Upper-First-Suffix-0-999.rule
mp32.exe -1 0123456789 "u$?1$?1$?1" -o Upper-All-Suffix-0-999.rule
mp32.exe -1 0123456789 "d$?1$?1$?1" -o Double-Word-Suffix-0-999.rule

mp32.exe -1 0123456789 "^?1^?1^?1^?1" -o Prefix-0-9999.rule
mp32.exe -1 0123456789 "l^?1^?1^?1^?1" -o Lower-All-Prefix-0-9999.rule
mp32.exe -1 0123456789 "c^?1^?1^?1^?1" -o Upper-First-Prefix-0-9999.rule
mp32.exe -1 0123456789 "u^?1^?1^?1^?1" -o Upper-All-Prefix-0-9999.rule
mp32.exe -1 0123456789 "d^?1^?1^?1^?1" -o Double-Word-Prefix-0-9999.rule

mp32.exe -1 0123456789 "$?1$?1$?1$?1" -o Suffix-0-9999.rule
mp32.exe -1 0123456789 "l$?1$?1$?1$?1" -o Lower-All-Suffix-0-9999.rule
mp32.exe -1 0123456789 "c$?1$?1$?1$?1" -o Upper-First-Suffix-0-9999.rule
mp32.exe -1 0123456789 "u$?1$?1$?1$?1" -o Upper-All-Suffix-0-9999.rule
mp32.exe -1 0123456789 "d$?1$?1$?1$?1" -o Double-Word-Suffix-0-9999.rule



64-bit

mp64.exe -1 0123456789 "^?1^?1^?1" -o Prefix-0-999.rule
mp64.exe -1 0123456789 "l^?1^?1^?1" -o Lower-All-Prefix-0-999.rule
mp64.exe -1 0123456789 "c^?1^?1^?1" -o Upper-First-Prefix-0-999.rule
mp64.exe -1 0123456789 "u^?1^?1^?1" -o Upper-All-Prefix-0-999.rule
mp64.exe -1 0123456789 "d^?1^?1^?1" -o Double-Word-Prefix-0-999.rule

mp64.exe -1 0123456789 "$?1$?1$?1" -o Suffix-0-999.rule
mp64.exe -1 0123456789 "l$?1$?1$?1" -o Lower-All-Suffix-0-999.rule
mp64.exe -1 0123456789 "c$?1$?1$?1" -o Upper-First-Suffix-0-999.rule
mp64.exe -1 0123456789 "u$?1$?1$?1" -o Upper-All-Suffix-0-999.rule
mp64.exe -1 0123456789 "d$?1$?1$?1" -o Double-Word-Suffix-0-999.rule

mp64.exe -1 0123456789 "^?1^?1^?1^?1" -o Prefix-0-9999.rule
mp64.exe -1 0123456789 "l^?1^?1^?1^?1" -o Lower-All-Prefix-0-9999.rule
mp64.exe -1 0123456789 "c^?1^?1^?1^?1" -o Upper-First-Prefix-0-9999.rule
mp64.exe -1 0123456789 "u^?1^?1^?1^?1" -o Upper-All-Prefix-0-9999.rule
mp64.exe -1 0123456789 "d^?1^?1^?1^?1" -o Double-Word-Prefix-0-9999.rule

mp64.exe -1 0123456789 "$?1$?1$?1$?1" -o Suffix-0-9999.rule
mp64.exe -1 0123456789 "l$?1$?1$?1$?1" -o Lower-All-Suffix-0-9999.rule
mp64.exe -1 0123456789 "c$?1$?1$?1$?1" -o Upper-First-Suffix-0-9999.rule
mp64.exe -1 0123456789 "u$?1$?1$?1$?1" -o Upper-All-Suffix-0-9999.rule
mp64.exe -1 0123456789 "d$?1$?1$?1$?1" -o Double-Word-Suffix-0-9999.rule

Paste them in to a text file and name it “Hashcat Rule Generator.cmd”.

Place this new file in the same directory as maskprocessor and double left click it.

You should very quickly be presented with a group of commonly used password modifications. Each rule file is individually named to help you understand its function.

Limitation

On Windows, when trying to inset the ^ character, enclose it in quotes. ^ is an escape character in the Windows command shell, and will not be printed unless quoted.

Example:

mp32.exe -1 0123456789 "^"?1"^"?1"^"?1 -o "Prefix 0-999.rule"

NOT

mp32.exe -1 0123456789  ^?1^?1^?1 -o "Prefix 0-999.rule"