stdin mode, length limit, a lot gets rejected

stdin mode, length limit, a lot gets rejected - Printable Version

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stdin mode, length limit, a lot gets rejected - root2 - 09-28-2015

Hi,

I use a C program that build password guesses based on the following rule:

Code:
email:pw:username:SOME_VERY_LONG_CONSTANT

Here an invented example:

user0@example.org:123456:user0:aSDJv934upvjsdpu24r8gu3490503475345jklvsdhshdklfhjsdilfjsldflsdfklsdfkljsdlkfklsdjfklsdjfksdjfklsdjfjklsdhfjsdhfsdfsdfsdsad234tb

user1@provider.org:123456:user1:aSDJv934upvjsdpu24r8gu3490503475345jklvsdhshdklfhjsdilfjsldflsdfklsdfkljsdlkfklsdjfklsdjfksdjfklsdjfjklsdhfjsdhfsdfsdfsdsad234tb

user2@another.:123456:user2:aSDJv934upvjsdpu24r8gu3490503475345jklvsdhshdklfhjsdilfjsldflsdfklsdfkljsdlkfklsdjfklsdjfksdjfklsdjfjklsdhfjsdhfsdfsdfsdsad234tb

In the moment I pipe those generated password candidates to oclHashCat in stdin mode, most of them will be rejected because the candidates are too long.

Code:
cat dictionary.dict | ./myCprogram | ./oclHashCat64.bin somehashes.md5

What can I do about it?

RE: stdin mode, length limit, a lot gets rejected - epixoip - 09-28-2015

1. There's nothing you can do about it, the length is simply too long for any optimized cracker. You'll need to use a cracker that just uses OpenSSL or something.

2. oclHashcat is not the correct program to use for this anyway. Since you have no amplifier, you are gaining no acceleration. This attack will be faster on CPU than GPU regardless.

RE: stdin mode, length limit, a lot gets rejected - root2 - 09-28-2015

Thanks for the info. This can be closed.