(YARA) YARA_Base64
Created the . Updated 3 months, 2 weeks ago.
rule golang_base64_enc {
meta:
author = "RussianPanda"
decription = "Detects Base64 Encoding and Decoding patterns in Golang binaries"
reference = "https://unprotect.it/technique/base64/"
date = "1/10/2024"
hash = "509a359b4d0cd993497671b91255c3775628b078cde31a32158c1bc3b2ce461c"
strings:
$s1 = {62 61 73 65 36 34 2e 53 74 64 45 6e 63 6f 64 69 6e 67 2e 45 6e 63 6f 64 65 54 6f 53 74 72 69 6e 67 28 [0-15] 29}
$s2 = {62 61 73 65 36 34 2e 53 74 64 45 6e 63 6f 64 69 6e 67 2e 44 65 63 6f 64 65 53 74 72 69 6e 67 28 [0-15] 29}
$s3 = {69 66 20 65 72 72 20 21 3D 20 6E 69 6C 20 7B}
$s4 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
condition:
all of ($s*)
and uint16(0) == 0x5A4D
}
rule base64_enc {
meta:
author = "RussianPanda"
decription = "Detects Base64 Encoding"
reference = "https://unprotect.it/technique/base64/"
date = "1/10/2024"
hash = "09506d1af5d8e6570b2b7d05143f444f5685d2a9f3304780ef376edf7b2d79e6"
strings:
$s2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
$s3 = {83 E? 3F}
condition:
all of ($s*)
and uint16(0) == 0x5A4D
}