Look for a squashfs or ext2 image. If found, mount it:
# Create working directory mkdir ~/cisco_conversion && cd ~/cisco_conversion binwalk -e target_image.bin Navigate to extracted squashfs or cpio archive cd _target_image.bin.extracted
FS_DIR=$(find "$TMP_DIR" -type d -name "squashfs-root*" | head -1) if [ -z "$FS_DIR" ]; then echo "Error: No squashfs found. Image may be encrypted." exit 1 fi cisco convert bin to pkg
#!/bin/bash # bin2pkg_helper.sh - Unsanctioned conversion helper BIN_FILE=$1 PKG_OUT=$2:-output.pkg
# Repackage as tar (Cisco PKG = tarball with specific naming) tar -czf isrv-universalk9.16.12.03.pkg -C pkg_root . For supported platforms, Cisco provides a closed-source tool: Look for a squashfs or ext2 image
sudo mount -t squashfs squashfs-root.0 /mnt/cisco_fs -o loop
tar -czf "$PKG_OUT" -C "$TMP_DIR/pkg" . echo "Created: $PKG_OUT" rm -rf "$TMP_DIR" Prepared by: Network Engineering Team Last Reviewed: [Current Date] Next Scheduled Review: 6 months 2. Prerequisites Before conversion
mkdir -p "$TMP_DIR/pkg/contents" cp -r "$FS_DIR/"* "$TMP_DIR/pkg/contents/" cat > "$TMP_DIR/pkg/metadata/package.ini" <<EOF [Package] Version = unknown Platform = generic Type = converted EOF
Document Version: 1.0 Applicable Products: Cisco IOS-XE, Cisco vManage, Cisco ISRv (KVM), Cisco Cloud Services Router (CSR) Purpose: This document provides a standard operating procedure (SOP) for converting a raw binary ( .bin ) software image into a deployable package ( .pkg ) format. 1. Introduction Cisco distributes operating system images primarily as .bin files (e.g., isrv-universalk9.16.12.03.bin ). However, certain deployment platforms—particularly those utilizing application hosting, Cisco vManage software upgrades, or KVM-based virtualized environments—require a .pkg (Package) format. The .pkg format includes additional metadata and a structured filesystem that the hypervisor or orchestrator can validate and unpack. 2. Prerequisites Before conversion, ensure the following: