Function at 0x403a10
Capabilities:
Accept command line arguments
Copy file
Create directory
Delete file
Get common file path
Get file system object information
Set current directory
Shutdown system
Terminate process

Disassembly:
sub esp, 0x2d4
push ebx
push ebp
push esi
push edi
push 0x20
xor ebp, ebp
pop esi
mov dword [esp + 0x18], ebp
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x14], ebp
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x47eb98], eax
call fcn.00406489
push ebp
push 0x2b4
mov dword [0x47eab0], eax
lea eax, [esp + 0x38]
push eax
push ebp
push 0x40a31c
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x476aa0
call fcn.00406196
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
mov edi, 0x4cf0a0
push edi
call fcn.00406196
push ebp
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x4cf0a0], 0x22
mov dword [0x47eab8], eax
mov eax, edi
jne 0x403ab0
push 0x22
pop esi
mov eax, 0x4cf0a2
push esi
push eax
call fcn.00405e93
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov esi, eax
mov dword [esp + 0x1c], esi
jmp 0x403b57
push 0x20
pop ebx
cmp ax, bx
jne 0x403ad9
add esi, 2
cmp word [esi], bx
je 0x403ad1
cmp word [esi], 0x22
jne 0x403ae5
push 0x22
add esi, 2
pop ebx
cmp word [esi], 0x2f
jne 0x403b45
add esi, 2
cmp word [esi], 0x53
jne 0x403b07
movzx eax, word [esi + 2]
cmp eax, 0x20
je 0x403b02
cmp ax, bp
jne 0x403b07
or dword [esp + 0x14], 2
push 4
push str.NCRC
push esi
call fcn.00403975
add esp, 0xc
test eax, eax
jne 0x403b2e
movzx eax, word [esi + 8]
cmp eax, 0x20
je 0x403b29
cmp ax, bp
jne 0x403b2e
or dword [esp + 0x14], 4
push 4
lea eax, [esi - 4]
push str.__D
push eax
call fcn.00403975
add esp, 0xc
test eax, eax
je 0x403b65
push ebx
push esi
call fcn.00405e93
mov esi, eax
cmp word [esi], 0x22
jne 0x403b57
add esi, 2
movzx eax, word [esi]
cmp ax, bp
jne 0x403ac9
jmp 0x403b82
push 8
lea eax, [esi - 4]
push ebp
push eax
call fcn.004083b0
add esp, 0xc
add esi, 4
push esi
push 0x4d30a8
call fcn.00406196
mov ebx, 0x4e30c8
push ebx
push 0x2004
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
call fcn.00403941
test eax, eax
jne 0x403bc0
push 0x1fff
push ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push ebx
call sub.KERNEL32.dll_lstrcatW
call fcn.00403941
test eax, eax
je 0x403c59
push 0x4df0c0
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x14]
call fcn.00403679
mov dword [esp + 0x10], eax
cmp eax, ebp
jne 0x403c59
cmp dword [0x47eb04], ebp
je 0x403c42
push ebp
push edi
call fcn.00405e93
mov esi, eax
jmp 0x403c06
push 4
push 0x40a2d4
push esi
call fcn.00403975
add esp, 0xc
test eax, eax
je 0x403c0a
sub esi, 2
cmp esi, edi
jae 0x403bef
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x403c84
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.0040690b
test eax, eax
je 0x403c59
push esi
push 0x4d30a8
call fcn.00406196
push esi
push 0x4d70b0
call fcn.00406196
mov dword [esp + 0x10], ebp
or dword [0x47eb8c], 0xffffffff
call fcn.00405ab9
push 1
mov dword [esp + 0x1c], eax
call fcn.00406274
call fcn.004039ce
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebp
je 0x403d5b
push 0x200010
push dword [esp + 0x14]
call fcn.00405e2d
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push 0x40a2c0
push ebx
call sub.KERNEL32.dll_lstrcatW
mov esi, 0x4db0b8
push esi
push ebx
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403c59
push ebp
push ebx
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push ebx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x4d30a8], bp
jne 0x403cc3
push esi
push 0x4d30a8
call fcn.00406196
push dword [esp + 0x1c]
push section..ndata
call fcn.00406196
push 0x40a2bc
push 0x483008
call fcn.00406196
push 0x1a
pop edi
mov esi, 0x43dd50
mov eax, dword [0x47eabc]
push dword [eax + 0x120]
push esi
call fcn.00406992
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebp
je 0x403d45
push 1
push esi
push 0x4eb0d8
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403d45
push ebp
push esi
call fcn.00406df5
mov eax, dword [0x47eabc]
push dword [eax + 0x124]
push esi
call fcn.00406992
push esi
call fcn.00405dcc
cmp eax, ebp
je 0x403d45
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebp
inc word [0x483008]
dec edi
jne 0x403ce8
push ebp
push ebx
call fcn.00406df5
jmp 0x403c59
cmp dword [0x47eb74], ebp
je 0x403dde
push 3
call fcn.00406489
push 4
mov ebx, eax
call fcn.00406489
push 5
mov esi, eax
call fcn.00406489
mov edi, eax
cmp ebx, ebp
je 0x403dca
cmp esi, ebp
je 0x403dca
cmp edi, ebp
je 0x403dca
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebx
test eax, eax
je 0x403dca
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebp
call esi
push ebp
push ebp
push ebp
lea eax, [esp + 0x2c]
push eax
push ebp
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push ebp
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403dde
push 9
call fcn.0040141d
mov eax, dword [0x47eb8c]
cmp eax, 0xffffffff
je 0x403dec
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x403c7e