bash -lc python3 - <<'PY' from pathlib import Path import math, hashlib, re p=Path('/mnt/data/useless-linux-agent.bin') b=p.read_bytes() print('size', len(b)) print('sha256', hashlib.sha256(b).hexdigest()) print('md5', hashlib.md5(b).hexdigest())

whole-file entropy

from collections import Counter c=Counter(b) ent=-sum((n/len(b))*math.log2(n/len(b)) for n in c.values()) print('entropy_bits_per_byte', round(ent,3))

section header table overlay check from ELF header

e_shoff=int.from_bytes(b[0x28:0x30],'little') e_shentsize=int.from_bytes(b[0x3A:0x3C],'little') e_shnum=int.from_bytes(b[0x3C:0x3E],'little') end=e_shoff+e_shentsize*e_shnum print('section_table_end', end, 'overlay_bytes', max(0, len(b)-end))

printable runs summary

runs=re.findall(rb'[\x20-\x7e]{4,}', b) print('printable_runs_count', len(runs)) for r in runs[:30]: print(repr(r[:120])) PY

Thought for 1m 32s