Sneed-Reactivity/yara-mikesxrs/phoul/SHA256_Constants.yar
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2024-07-25 12:43:35 -05:00

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rule SHA256_Constants {
meta:
author = "phoul (@phoul)"
description = "Look for SHA224/SHA256 constants"
date = "2014-01"
version = "0.1"
strings:
$c0 = { 428a2f98 }
$c1 = { 982F8A42 }
$c2 = { 71374491 }
$c3 = { 91443771 }
$c4 = { B5C0FBCF }
$c5 = { CFFBC0B5 }
$c6 = { E9B5DBA5 }
$c7 = { A5DBB5E9 }
// Exclude
$e0 = { D728AE22 }
$e1 = { 22AE28D7 }
condition:
4 of ($c0,$c1,$c2,$c3,$c4,$c5,$c6,$c7) and not ($e0 or $e1)
}