mirror of
https://github.com/mandiant/capa-rules
synced 2026-06-08 15:41:20 +00:00
William Ballenthin
28 lines
781 B
YAML
28 lines
781 B
YAML
rule:
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meta:
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name: encode data using Base64
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namespace: data-manipulation/encoding/base64
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author: moritz.raabe@fireeye.com
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scope: function
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examples:
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- BFB9B5391A13D0AFD787E87AB90F14F5:0x1314889C
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- 074072B261FC27B65C72671F13510C05:0x100049B2
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- 5DB2D2BE20D59AA0BE6709A6850F1775:0x18001CC30
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- 08AC667C65D36D6542917655571E61C8:0x406EAA
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features:
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- and:
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- mnemonic: shl
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- mnemonic: shr
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- number: 0x3F # modulo 64
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- or:
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- number: 0x3D = '='
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- number: 0x3D3D = '=='
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- match: contain loop
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- optional:
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- number: 2
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- number: 3
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- number: 4
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- number: 6
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- number: 0xF
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- string: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/
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