only the first hash in a multihash list was marked as cracked, regardless
of which hash was actually cracked. For example, if the second hash was
cracked, it incorrectly marked the first as cracked and left the second
uncracked. This issue only affected beta versions and only in multihash
cracking mode.
Added deep-comp kernel support for Kerberos modes 28800 and 28900,
enabling multihash cracking for the same user in the same domain, even if
the password was changed or the recording was bad.
Added a rule ensuring that device buffer sizes for password candidates,
hooks, and transport (tmps) must be smaller than 1/4 of the maximum
allocatable memory. If not, hashcat now automatically reduces kernel-accel
down to 1, then halves the number of threads and restores kernel-accel up
to its maximum, repeating until the size requirement is met.
Fixed salt length limit verification for -m 20712.
Fixed password length limit for -m 14400.
Fixed unit test salt generator for -m 21100, which could produce duplicate
hashes under certain conditions.
Added the OPTS_TYPE_NATIVE_THREADS flag to the following hash modes
(after benchmarking): 7700, 7701, 9000, 1375x, 1376x, 14800, 19500, 23900.
- Used blake2b_transform() instead of blake2b_update() to avoid compiler problems
on Intel OpenCL and segfaults on POCL (still unsure of exact cause but possibly
related to the shuffle functions in combination with these OpenCL drivers).
- Remove 'bug' comments (these are resolved now).
- Added implementation of 'argon2_hash_block()' for non-warped (CPU) case.
- Introduced 'LBLOCKSIZE' for the size of an argon2 block per thread in u64.
Most of the code should now be able to support any warp/wavefront size.
Improved handling of an autotune edge case. In theory, increasing
accel early can improve accuracy, and it does, but it also prevents
increasing the thread count because it's more likely to run into
high runtime limits. OTOH, we want to prioritize threads over accel.
This change may slightly reduce performance for algorithms that
benefit from high accel and low thread counts (e.g., 7800, 14900),
but those can be managed by limiting thread count or, preferably,
by setting OPTS_TYPE_NATIVE_THREADS.
Added OPTS_TYPE_NATIVE_THREADS to 7800, 7810, and 14900.
Also fixed encoder bugs in hash-mode 29920 and 29940, identified
using the new test_edge.sh script. The encoders in the modules
failed to properly terminate the output string.
- Replaced inline asm in hc_byte_perm() with __builtin_amdgcn_perm()
- Replaced inline asm in hc_bytealign() with __builtin_amdgcn_alignbyte()
- Defined HC_INLINE as default for HIP, significantly boosting kernel performance of pure kernels
- Removed IS_ROCM from inc_vendor.h as it's no longer needed
- Removed backend-specific code from several hash-modes and inc_rp_optimized.cl, as hc_bytealign_S() is now available on all backends
Hashcat is evolving, both in its core and in the supported algorithms.
To uncover bugs in the code, I implemented edge case testing to verify the settings defined in the specific algorithm test modules (e.g., m00000.pm), as well as the behavior of the kernels (pure and optimized) in relation to the different attack modes (-a0, -a1, etc.).
