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levwu/emotet_payload_decryption.py

Created March 31, 2019 04:52
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emotet_payload_decryption.py
from struct import pack, unpack
with open('memdump_AF0_01C90000_19a00.bin', 'rb') as f:
raw = f.read()
size = 0x19a00
plain = ""
i = 0
while i < size:
c = raw[i:i+4]
k = i + 0x3e9
_c = (unpack("<I", c)[0] + i) & 0xFFFFFFFF
plain += pack("<I", _c ^ k)
i += 4
print plain
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