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+--- Thread: md5crypt brutforce for pass 13 lenght (/thread-10474.html)
md5crypt brutforce for pass 13 lenght - chouaib25 - 11-23-2021
Hello
i try to brutforce md5crypt i got
Integer overflow detected in keyspace of mask: ?1?1?1?1?1?1?1?1?1?1?1?1?1
my password have 13 in lenght and have only ?l?d
the password is only in hex
and i use this commande
hashcat.exe -O -m 500 md5.hash -a 3 ?1?1?1?1?1?1?1?1?1?1?1?1?1 --increment -1 ?l?d --increment-min 13 --force -w 4 --opencl-device-types 1,2 -w 4 --force
can help for this
RE: md5crypt brutforce for pass 13 lenght - drsnooker - 11-23-2021
Why not use ?h instead of ?1
Still 13 chars is going to take awhile even with multiple 3090s
RE: md5crypt brutforce for pass 13 lenght - pdo - 11-23-2021
The integer overflow is triggered because you've requested that hashcat generate more than 2^64 combinations, which is the limit (I believe).
You've asked for 26 letters, plus 10 digits, so 36 symbols, in 13 positions which is 36^13 (approx 1.70x10^20 combinations)
2^64 ~= 1.84x10^18
36^13 ~= 1.70x10^20
On a 3090, you'll get around 32621.8 kH/s for md5crypt you'll be a Very Long Time exhausting that keyspace
(1.70x10^20 keys / 32621800 key/sec) = 5,229,071,607,930 seconds (around 165,000 years).
RE: md5crypt brutforce for pass 13 lenght - drsnooker - 11-23-2021
(11-23-2021, 08:41 PM)pdo Wrote: The integer overflow is triggered because you've requested that hashcat generate more than 2^64 combinations, which is the limit (I believe).
You've asked for 26 letters, plus 10 digits, so 36 symbols, in 13 positions which is 36^13 (approx 1.70x10^20 combinations)
2^64 ~= 1.84x10^18
36^13 ~= 1.70x10^20
On a 3090, you'll get around 32621.8 kH/s for md5crypt you'll be a Very Long Time exhausting that keyspace
(1.70x10^20 keys / 32621800 key/sec) = 5,229,071,607,930 seconds (around 165,000 years).
If you can just use hex ?h, then you can get to 16^13, which means about 6 months on a 3090! Sorta doable, if you're desperate....
RE: md5crypt brutforce for pass 13 lenght - chouaib25 - 11-23-2021
hi
thanks for reply
yes i have test with6 rtx 3090
with commande
hashcat.exe -O -m 500 md5.hash -a 3 ?h?h?h?h?h?h?h?h?h?h?h?h?h --increment -1 ?l?d --increment-min 13 --increment-max 13 --force -w 4
i have got estimate time is 280 days