pgm 7

file.txt

steghide zip clamav

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#!/bin/bash
set -euo pipefail
echo "[*] script start: $(date)"
TMPDIR="$(mktemp -d /tmp/exfil.XXXXXX)"
SRC="${HOME}/acq_demo/victim_docs/secret.txt"
cp "${SRC}" "${TMPDIR}/secret.txt"
zip -j -P pass123 "${TMPDIR}/payload.zip" "${TMPDIR}/secret.txt"
mkdir -p /tmp/exfil
cp "${TMPDIR}/payload.zip" /tmp/exfil/payload.zip
echo "[*] script end: $(date)"

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steghide embed -cf ~/acq_demo/cover1.jpg -ef /tmp/exfil/payload.zip -p demo-pass
steghide info ~/acq_demo/cover1.jpg

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mkdir -p ~/.hidden_store
mv ~/acq_demo/cover1.jpg ~/.hidden_store/.cover1.jpg
ls -la ~/.hidden_store

# Extract hidden file
steghide extract -sf ~/.hidden_store/.cover1.jpg -p demo-pass -xf /tmp/recovered_payload.zip

# Unzip and recover secret
unzip -P pass123 /tmp/recovered_payload.zip -d /tmp/recovered_payload
cat /tmp/recovered_payload/secret.txt