Splitting Large Single-Line File Into Passwords

[Snoopy]

Hi all, and thanks in advance for the help.

I have a large text file (>10GB) that I know contains a password I'm looking for. The file is formatted properly (ASCII), but it contains no line breaks and is basically one massive single line of text. I also don't know the length of the password, but I know it exists in the file.

I have written a PowerShell script to pull out all possible strings of X length, going byte by byte (i.e., all strings of 10 characters, all strings of 11 characters, etc.) to text files, but the process is extremely slow and memory intensive (and much slower than hashcat itself).

My hash is slow, so pure bruteforce is not an option here. Does anyone know if hashcat has the capability to ingest a large text file and try all possible passwords of a specific length? Or have a better method to do this?

86Ranger

is there at least a space between the passes like: pass1 pass2 pass3 or is it also without space like: pass1pass2pass3?

with space separation its no problem to generate a new wordlist from that, without separation (style2) you will probably never get your pass, why? because it is most unlikely that your script will match the exact starting point of your pass, just imagine you are looking for a pass of length six, then the pass have to start at a position which is postion modulo 6 = 0, or is your script workling like that? start at position 0 extract 6, move to position 1 extract 6 and so on? like that.
input, cut length 6
ultrawhitelongpasswordline
result:
ultraw
ltrawh
trawhi
rawhit
...?  

this way you COULD hit your pass, but you will generate tons of new wordlist for each length ( i think bruteforce of length 1-6 is maybe possible, but you will need to genrate list for length 7 up to X, and every list will consume  +10GB on its own

anyway, without knowing the exact password length and this massive file content it is most unlikely that you will find that single pass you are looking for