Function at 0x40324f
Capabilities:
Accept command line arguments
Check os version
Copy file
Delete file
Get common file path
Get file system object information
Set current directory
Shutdown system
Terminate process

Disassembly:
sub esp, 0x180
push ebx
push ebp
push esi
push edi
xor ebx, ebx
push 0x8001
mov dword [esp + 0x1c], ebx
mov dword [esp + 0x14], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
xor esi, esi
mov byte [esp + 0x18], 0x20
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
cmp ax, 6
je 0x403296
push ebx
call fcn.00406087
cmp eax, ebx
je 0x403296
push 0xc00
call eax
push str.UXTHEME
call fcn.0040601d
push str.USERENV
call fcn.0040601d
push str.SETUPAPI
call fcn.0040601d
push 0xd
call fcn.00406087
push 0xb
call fcn.00406087
mov dword [0x423f84], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x424038], eax
push ebx
lea eax, [esp + 0x34]
push 0x160
push eax
push ebx
push 0x41f538
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x423780
call fcn.00405cfb
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x42a000
push eax
push ebp
call fcn.00405cfb
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x42a000], 0x22
mov dword [0x423f80], eax
mov eax, ebp
jne 0x403332
mov byte [esp + 0x14], 0x22
mov eax, 0x42a001
push dword [esp + 0x14]
push eax
call fcn.00405819
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x4033ac
cmp cl, 0x20
jne 0x403354
inc eax
cmp byte [eax], 0x20
je 0x40334e
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403364
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40339c
inc eax
cmp byte [eax], 0x53
jne 0x40337d
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40337d
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x403393
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403393
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x4033b4
push dword [esp + 0x14]
push eax
call fcn.00405819
cmp byte [eax], 0x22
jne 0x4033ac
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403349
jmp 0x4033c5
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x42a400
call fcn.00405cfb
mov edi, 0x42b400
push edi
push 0x400
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.0040321e
test eax, eax
jne 0x4033ff
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.0040321e
test eax, eax
je 0x40347d
push 0x42b000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.00402c88
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x40347d
cmp dword [0x423f9c], ebx
je 0x40346d
push ebx
push ebp
call fcn.00405819
mov esi, eax
jmp 0x403434
cmp dword [esi], 0x3d3f5f20
je 0x403438
dec esi
cmp esi, ebp
jae 0x40342b
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x4034a8
mov byte [esi], bl
add esi, 4
push esi
call fcn.004058cf
test eax, eax
je 0x40347d
push esi
push 0x42a400
call fcn.00405cfb
push esi
push 0x42a800
call fcn.00405cfb
mov dword [esp + 0x10], ebx
or dword [0x42402c], 0xffffffff
call fcn.0040374e
mov dword [esp + 0x18], eax
call fcn.0040365c
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x4035a1
push 0x200010
push dword [esp + 0x14]
call fcn.004055bc
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.00405543
push str.nsu
push edi
mov esi, eax
call sub.KERNEL32.dll_lstrcatA
cmp esi, ebx
je 0x4034c9
push 0x4091ac
push edi
call sub.KERNEL32.dll_lstrcatA
push str..tmp
push edi
call sub.KERNEL32.dll_lstrcatA
mov ebp, 0x42ac00
push ebp
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40347d
cmp esi, ebx
push edi
je 0x4034f1
call fcn.004054a9
jmp 0x4034f6
call fcn.00405526
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x42a400], bl
jne 0x403510
push ebp
push 0x42a400
call fcn.00405cfb
push dword [esp + 0x1c]
push section..ndata
call fcn.00405cfb
push 0x1a
mov word [0x425400], 0x41
pop ebp
mov esi, 0x41f138
mov eax, dword [0x423f90]
push dword [eax + 0x120]
push esi
call fcn.00405d1d
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x40358c
push 1
push esi
push 0x42bc00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x40358c
push ebx
push esi
call fcn.00405a49
mov eax, dword [0x423f90]
push dword [eax + 0x124]
push esi
call fcn.00405d1d
push esi
call fcn.0040555b
cmp eax, ebx
je 0x40358c
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x425400]
dec ebp
jne 0x40352f
push ebx
push edi
call fcn.00405a49
jmp 0x40347d
cmp dword [0x424014], ebx
je 0x403644
push 5
call fcn.00406087
push 6
mov ebp, eax
call fcn.00406087
push 7
mov esi, eax
call fcn.00406087
cmp ebp, ebx
mov edi, eax
je 0x403614
cmp esi, ebx
je 0x403614
cmp edi, ebx
je 0x403614
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x403614
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
lea eax, [esp + 0x28]
push ebx
push eax
push ebx
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push 8
call fcn.00406087
cmp eax, ebx
mov esi, 0x80040002
je 0x403630
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x40363d
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403644
push 9
call fcn.0040140b
mov eax, dword [0x42402c]
cmp eax, 0xffffffff
je 0x403652
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]