Function at 0x403420
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 ebx, ebx
pop esi
mov dword [esp + 0x18], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x14], ebx
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x478698], eax
call fcn.00405d97
push ebx
push 0x2b4
mov dword [0x4785b0], eax
lea eax, [esp + 0x38]
push eax
push ebx
push 0x4083d4
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x4705a0
call fcn.00405c90
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
mov edi, 0x4c90a0
push edi
call fcn.00405c90
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x4c90a0], 0x22
mov dword [0x4785b8], eax
mov eax, edi
jne 0x4034c0
push 0x22
pop esi
mov eax, 0x4c90a2
push esi
push eax
call fcn.0040598b
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov esi, eax
mov dword [esp + 0x1c], esi
jmp 0x40353f
push 0x20
pop ebp
cmp ax, bp
jne 0x4034e5
inc esi
inc esi
cmp word [esi], bp
je 0x4034de
cmp word [esi], 0x22
jne 0x4034f0
inc esi
push 0x22
inc esi
pop ebp
cmp word [esi], 0x2f
jne 0x40352e
inc esi
inc esi
cmp word [esi], 0x53
jne 0x403512
movzx eax, word [esi + 2]
cmp ax, 0x20
je 0x40350d
cmp ax, bx
jne 0x403512
or dword [esp + 0x14], 2
or dword [esp + 0x14], 4
push 4
lea eax, [esi - 4]
push str.__D
push eax
call fcn.0040339f
add esp, 0xc
test eax, eax
je 0x403549
push ebp
push esi
call fcn.0040598b
mov esi, eax
cmp word [esi], 0x22
jne 0x40353f
inc esi
inc esi
movzx eax, word [esi]
cmp ax, bx
jne 0x4034d6
jmp 0x403566
push 8
lea eax, [esi - 4]
push ebx
push eax
call fcn.00407402
add esp, 0xc
add esi, 4
push esi
push 0x4cd0a8
call fcn.00405c90
mov ebp, 0x4dd0c8
push ebp
push 0x2004
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
call fcn.0040336b
test eax, eax
jne 0x4035a4
push 0x1fff
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatW
call fcn.0040336b
test eax, eax
je 0x403635
push 0x4d90c0
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x14]
call fcn.00403168
mov dword [esp + 0x10], eax
cmp eax, ebx
jne 0x403635
cmp dword [0x478604], ebx
je 0x403625
push ebx
push edi
call fcn.0040598b
mov esi, eax
jmp 0x4035e9
push 4
push str.___
push esi
call fcn.0040339f
add esp, 0xc
test eax, eax
je 0x4035ed
dec esi
dec esi
cmp esi, edi
jae 0x4035d3
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x403660
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.0040621a
test eax, eax
je 0x403635
push esi
push 0x4cd0a8
call fcn.00405c90
push esi
push 0x4d10b0
call fcn.00405c90
mov dword [esp + 0x10], ebx
or dword [0x47868c], 0xffffffff
call fcn.004055d0
mov dword [esp + 0x18], eax
call fcn.004033f6
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403737
push 0x200010
push dword [esp + 0x14]
call fcn.00405925
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push 0x408384
push ebp
call sub.KERNEL32.dll_lstrcatW
mov esi, 0x4d50b8
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403635
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x4cd0a8], bx
jne 0x40369f
push esi
push 0x4cd0a8
call fcn.00405c90
push dword [esp + 0x1c]
push section..ndata
call fcn.00405c90
push 0x408380
push 0x47d008
call fcn.00405c90
push 0x1a
pop edi
mov esi, 0x4321c8
mov eax, dword [0x4785bc]
push dword [eax + 0x120]
push esi
call fcn.004062a2
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebx
je 0x403721
push 1
push esi
push 0x4e50d8
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403721
push ebx
push esi
call fcn.004066fe
mov eax, dword [0x4785bc]
push dword [eax + 0x124]
push esi
call fcn.004062a2
push esi
call fcn.004058c4
cmp eax, ebx
je 0x403721
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc word [0x47d008]
dec edi
jne 0x4036c4
push ebx
push ebp
call fcn.004066fe
jmp 0x403635
cmp dword [0x478674], ebx
je 0x4037ba
push 3
call fcn.00405d97
push 4
mov ebp, eax
call fcn.00405d97
push 5
mov esi, eax
call fcn.00405d97
mov edi, eax
cmp ebp, ebx
je 0x4037a6
cmp esi, ebx
je 0x4037a6
cmp edi, ebx
je 0x4037a6
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4037a6
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
push ebx
lea eax, [esp + 0x2c]
push eax
push ebx
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push ebx
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4037ba
push 9
call fcn.00401496
mov eax, dword [0x47868c]
cmp eax, 0xffffffff
je 0x4037c8
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x40365a