idiom / stackstack

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Stackstack makes IDA crash on certain XOR-encoded strings #9

Closed AndreaNaspi closed 2 years ago

AndreaNaspi commented 2 years ago

I'm analyzing a BlackMatter sample using the stackstack IDA pro plugin (SHA256: 22d7d67c3af10b1a37f277ebabe2d1eb4fd25afbd6437d4377400e148bcc08d6).

On certain encoded strings, like the following one, the "decode current" works well (first XOR-encoded string in sub_4095D6).

image

On other strings, the "decode current" makes IDA crash (first XOR-encoded string in sub_409750).

image

If needed I can share the sample in private.