Function at 0x4032a0
Capabilities:
Accept command line arguments
Check os version
Copy file
Delete file
Get common file path
Get file system object information
Set current directory
Set environment variable
Shutdown system
Terminate process

Disassembly:
sub esp, 0x2d4
push ebp
push esi
push 0x20
xor ebp, ebp
pop esi
mov dword [esp + 0xc], ebp
push 0x8001
mov dword [esp + 0xc], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x18], ebp
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
cmp ax, 6
je 0x4032e5
push ebp
call fcn.0040642b
cmp eax, ebp
je 0x4032e5
push 0xc00
call eax
push ebx
push edi
push str.UXTHEME
call fcn.004063bf
push str.USERENV
call fcn.004063bf
push str.SETUPAPI
call fcn.004063bf
push 9
call fcn.0040642b
push 7
call fcn.0040642b
mov dword [0x434f04], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x434fb8], eax
push ebp
lea eax, [esp + 0x34]
push 0x2b4
push eax
push ebp
push 0x42b228
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x433f00
call fcn.00406055
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ebx, 0x43f000
push eax
push ebx
call fcn.00406055
push ebp
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x43f000], 0x22
mov dword [0x434f00], eax
mov eax, ebx
jne 0x403382
push 0x22
mov eax, 0x43f002
pop esi
push esi
push eax
call fcn.00405a36
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov dword [esp + 0x18], ecx
mov ax, word [ecx]
cmp ax, bp
je 0x4034b4
push 0x20
pop edx
cmp ax, dx
jne 0x4033b1
inc ecx
inc ecx
cmp word [ecx], dx
je 0x4033aa
cmp word [ecx], 0x22
mov ebp, edx
jne 0x4033be
inc ecx
push 0x22
inc ecx
pop ebp
cmp word [ecx], 0x2f
jne 0x403480
inc ecx
inc ecx
cmp word [ecx], 0x53
jne 0x4033e8
mov ax, word [ecx + 2]
cmp ax, dx
je 0x4033de
test ax, ax
jne 0x4033e8
mov dword [0x434fa0], 1
movzx eax, word [0x40a2c2]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40a2c0]
cdq
movzx edx, word [str.NCRC]
or edi, eax
movzx eax, word [0x40a2be]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx]
or edi, edx
cmp eax, esi
jne 0x40343e
mov eax, dword [ecx + 4]
cmp eax, edi
jne 0x40343e
mov ax, word [ecx + 8]
cmp ax, 0x20
je 0x403439
test ax, ax
jne 0x40343e
or dword [esp + 0x1c], 4
movzx eax, word [0x40a2b6]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40a2b4]
cdq
movzx edx, word [str.__D]
or edi, eax
movzx eax, word [0x40a2b2]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx - 4]
or edi, edx
cmp eax, esi
jne 0x403480
mov eax, dword [ecx]
cmp eax, edi
je 0x40349f
push ebp
push ecx
call fcn.00405a36
mov ecx, eax
cmp word [ecx], 0x22
jne 0x403491
inc ecx
inc ecx
mov ax, word [ecx]
test ax, ax
jne 0x4033a2
jmp 0x4034b2
and word [ecx - 4], 0
add ecx, 4
push ecx
push 0x43f800
call fcn.00406055
xor ebp, ebp
mov edi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov esi, 0x441800
push esi
push 0x400
call edi
call fcn.0040326f
test eax, eax
jne 0x403526
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push esi
call sub.KERNEL32.dll_lstrcatW
call fcn.0040326f
test eax, eax
jne 0x403526
push esi
push 0x3fc
call edi
push 0x40a29c
push esi
call sub.KERNEL32.dll_lstrcatW
mov edi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push esi
push str.TEMP
call edi
push esi
push 0x40a288
call edi
call fcn.0040326f
test eax, eax
je 0x4035f1
push 0x441000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x1c]
call fcn.00402dee
cmp eax, ebp
mov dword [esp + 0x10], eax
jne 0x4035f1
cmp dword [0x434f1c], ebp
je 0x4035e1
push ebp
push ebx
call fcn.00405a36
mov edi, eax
cmp edi, ebx
jb 0x4035ab
movzx eax, word [0x40a282]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov ebp, eax
movzx eax, word [0x40a280]
movzx ecx, word [0x40a27c]
cdq
or ebp, eax
movzx eax, word [0x40a27e]
shl eax, 0x10
or eax, ecx
xor ecx, ecx
cdq
or ecx, eax
mov eax, ebp
or eax, edx
mov edx, dword [edi]
cmp edx, ecx
jne 0x4035a3
mov edx, dword [edi + 4]
cmp edx, eax
je 0x4035a9
dec edi
dec edi
cmp edi, ebx
jae 0x403596
xor ebp, ebp
cmp edi, ebx
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x40361e
mov word [edi], bp
add edi, 8
push edi
call fcn.00405b11
test eax, eax
je 0x4035f1
push edi
push 0x43f800
call fcn.00406055
push edi
push 0x440000
call fcn.00406055
mov dword [esp + 0x10], ebp
or dword [0x434fac], 0xffffffff
call fcn.0040389e
mov dword [esp + 0x14], eax
call fcn.004037c4
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebp
pop edi
pop ebx
je 0x403728
push 0x200010
push dword [esp + 0xc]
call fcn.0040579a
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.0040571d
push 0x40a270
push esi
mov edi, eax
call sub.KERNEL32.dll_lstrcatW
cmp edi, ebp
je 0x40363f
push 0x40a26c
push esi
call sub.KERNEL32.dll_lstrcatW
push str..tmp
push esi
call sub.KERNEL32.dll_lstrcatW
mov ebx, 0x440800
push ebx
push esi
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x4035f1
cmp edi, ebp
push esi
je 0x403667
call fcn.00405683
jmp 0x40366c
call fcn.00405700
push esi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x43f800], bp
jne 0x403687
push ebx
push 0x43f800
call fcn.00406055
push dword [esp + 0x18]
push section..ndata
call fcn.00406055
movzx eax, word [0x40a25a]
movzx ecx, word [0x40a258]
shl eax, 0x10
or eax, ecx
push 0x1a
mov dword [0x435800], eax
pop ebx
mov edi, 0x42aa28
mov eax, dword [0x434f10]
push dword [eax + 0x120]
push edi
call fcn.00406077
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebp
je 0x403712
push 1
push edi
push 0x442800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403712
push ebp
push edi
call fcn.00405ef6
mov eax, dword [0x434f10]
push dword [eax + 0x124]
push edi
call fcn.00406077
push edi
call fcn.00405735
cmp eax, ebp
je 0x403712
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebp
inc word [0x435800]
dec ebx
jne 0x4036b5
push ebp
push esi
call fcn.00405ef6
jmp 0x4035f1
cmp dword [0x434f94], ebp
je 0x4037ac
lea eax, [esp + 0x10]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
test eax, eax
je 0x40377c
lea eax, [esp + 0x1c]
push eax
push str.SeShutdownPrivilege
push ebp
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
push ebp
push ebp
lea eax, [esp + 0x20]
push ebp
push eax
push ebp
push dword [esp + 0x24]
mov dword [esp + 0x30], 1
mov dword [esp + 0x3c], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.0040642b
cmp eax, ebp
mov esi, 0x80040002
je 0x403798
push esi
push 0x25
push ebp
push ebp
push ebp
call eax
test eax, eax
je 0x4037a5
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4037ac
push 9
call fcn.0040140b
mov eax, dword [0x434fac]
cmp eax, 0xffffffff
je 0x4037ba
mov dword [esp + 0xc], eax
push dword [esp + 0xc]
call dword [sym.imp.KERNEL32.dll_ExitProcess]