Function at 0x4036fc
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, 0x3f0
push ebx
push ebp
push esi
push edi
xor ebx, ebx
mov edi, str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
push 0x8001
mov ebp, ebx
mov dword [esp + 0x14], ebx
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExW]
lea eax, [esp + 0x30]
xorps xmm0, xmm0
mov dword [esp + 0x44], ebx
push eax
movlpd qword [esp + 0x148], xmm0
mov dword [esp + 0x34], 0x11c
call esi
test eax, eax
jne 0x40377e
lea eax, [esp + 0x30]
mov dword [esp + 0x30], 0x114
push eax
call esi
push 0x53
pop eax
mov dl, 4
mov byte [esp + 0x14a], dl
cmp word [esp + 0x44], ax
jne 0x40377a
mov eax, dword [esp + 0x5e]
add eax, 0xffffffd0
mov word [esp + 0x144], ax
jmp 0x403785
xor eax, eax
jmp 0x403770
mov dl, byte [esp + 0x14a]
cmp dword [esp + 0x34], 0xa
jae 0x403797
movzx eax, word [esp + 0x3c]
mov dword [esp + 0x3c], eax
jmp 0x40379b
mov eax, dword [esp + 0x3c]
mov dword [0x435af8], eax
movzx eax, byte [esp + 0x34]
shl ax, 8
movzx ecx, ax
movzx eax, byte [esp + 0x38]
or ecx, eax
movzx eax, byte [esp + 0x144]
shl ax, 8
shl ecx, 0x10
movzx eax, ax
or ecx, eax
movzx eax, dl
or ecx, eax
mov eax, 0x600
mov dword [0x435afc], ecx
sar ecx, 0x10
cmp cx, ax
je 0x4037f0
push ebx
call fcn.004068f3
test eax, eax
je 0x4037f0
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.004061ab
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
inc esi
add esi, eax
cmp byte [esi], bl
jne 0x4037f5
push 0xc
call fcn.004068f3
push 0xa
call fcn.004068f3
push 8
mov dword [0x4349f0], eax
call fcn.004068f3
test eax, eax
je 0x403836
push 0x1e
call eax
test eax, eax
je 0x403836
or byte [0x435afc], 0x80
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push ebx
push 0x2b4
mov dword [0x435a60], eax
lea eax, [esp + 0x154]
push eax
push ebx
push 0x4095b0
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x434a00
call fcn.00406b27
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
push 0x440000
call fcn.00406b27
movzx ecx, word [0x440000]
mov edx, 0x440002
push 0x22
pop esi
push 0x20
pop ebx
cmp cx, si
mov dword [0x4349f4], 0x400000
mov eax, esi
mov dword [esp + 0x18], esi
cmovne eax, ebx
movzx eax, ax
push eax
mov eax, 0x440000
cmove eax, edx
push eax
call fcn.00406603
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov dword [esp + 0x1c], ecx
movzx eax, word [ecx]
test ax, ax
je 0x4039ac
mov esi, eax
movzx eax, si
cmp si, bx
jne 0x4038ea
add ecx, 2
movzx eax, word [ecx]
cmp ax, bx
je 0x4038df
movzx esi, ax
movzx edx, ax
cmp ax, word [esp + 0x18]
jne 0x403900
movzx edx, word [ecx + 2]
push 0x22
pop eax
mov ebx, eax
cmp si, word [esp + 0x18]
lea eax, [ecx + 2]
cmovne eax, ecx
cmp dx, 0x2f
jne 0x40396c
push 0x53
add eax, 2
pop ecx
push 0x20
pop edx
cmp word [eax], cx
jne 0x403937
movzx ecx, word [eax + 2]
cmp cx, dx
je 0x40392d
test cx, cx
jne 0x403937
mov dword [0x435ae0], 1
cmp dword [eax], 0x43004e
jne 0x40395b
cmp dword [eax + 4], 0x430052
jne 0x40395b
movzx ecx, word [eax + 8]
cmp cx, dx
je 0x403956
test cx, cx
jne 0x40395b
or dword [esp + 0x10], 4
cmp dword [eax - 4], 0x2f0020
jne 0x40396c
cmp dword [eax], 0x3d0044
je 0x403998
push ebx
push eax
call fcn.00406603
mov ecx, eax
push 0x22
pop ebx
movzx eax, word [ecx]
mov edx, eax
cmp ax, bx
jne 0x403988
add ecx, 2
movzx edx, word [ecx]
movzx esi, dx
test dx, dx
je 0x4039ac
push 0x20
pop ebx
jmp 0x4038d7
xor ecx, ecx
mov word [eax - 4], cx
add eax, 4
push eax
push 0x440800
call fcn.00406b27
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov ebx, 0x442800
push ebx
push 0x400
call esi
call fcn.00403ca0
test eax, eax
jne 0x403a1e
push 0x3fb
push ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push ebx
call sub.KERNEL32.dll_lstrcatW
call fcn.00403ca0
test eax, eax
jne 0x403a1e
push ebx
push 0x3fc
call esi
push 0x4095d8
push ebx
call sub.KERNEL32.dll_lstrcatW
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push ebx
push str.TEMP
call esi
push ebx
push 0x4095ec
call esi
call fcn.00403ca0
test eax, eax
je 0x403aaf
mov ebx, dword [sym.imp.KERNEL32.dll_DeleteFileW]
push 0x442000
call ebx
push dword [esp + 0x10]
call fcn.004033ed
mov edi, eax
test edi, edi
jne 0x403aaf
cmp dword [0x435a04], ebp
je 0x403aa1
push eax
push 0x440000
call fcn.00406603
mov esi, eax
mov eax, 0x440000
jmp 0x403a6a
cmp dword [esi], 0x5f0020
jne 0x403a67
cmp dword [esi + 4], 0x3d003f
je 0x403a6e
sub esi, 2
cmp esi, eax
jae 0x403a56
mov edi, str.Error_launching_installer
cmp esi, eax
jb 0x403ad7
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.00406645
test eax, eax
je 0x403aaf
push esi
push 0x440800
call fcn.00406b27
push esi
push 0x441000
call fcn.00406b27
xor edi, edi
or dword [0x435aec], 0xffffffff
call fcn.00405a39
mov ebp, eax
xor ebx, ebx
call fcn.004036d2
call dword [sym.imp.ole32.dll_OleUninitialize]
test edi, edi
je 0x403c07
push 0x200010
push edi
call fcn.00406ab5
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.00406509
push str.nsu
push 0x442800
mov esi, eax
call sub.KERNEL32.dll_lstrcatW
test esi, esi
je 0x403b00
push 0x409600
push 0x442800
call sub.KERNEL32.dll_lstrcatW
push 0x409604
push 0x442800
call sub.KERNEL32.dll_lstrcatW
push 0x441800
push 0x442800
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403aaf
push 0x442800
test esi, esi
je 0x403b33
call fcn.00405e39
jmp 0x403b38
call fcn.00405e19
push 0x442800
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
xor eax, eax
cmp word [0x440800], ax
jne 0x403b5d
push 0x441800
push 0x440800
call fcn.00406b27
push dword [esp + 0x1c]
push section..ndata
call fcn.00406b27
push 0x1a
mov dword [0x436800], 0x41
xor ebp, ebp
pop esi
mov eax, dword [0x435a10]
push dword [eax + 0x120]
push 0x42b538
call fcn.00405eb5
push 0x42b538
call ebx
test edi, edi
je 0x403be7
push 1
push 0x42b538
push 0x443800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403be7
push ebp
push 0x42b538
call fcn.0040624a
mov eax, dword [0x435a10]
push dword [eax + 0x124]
push 0x42b538
call fcn.00405eb5
push 0x42b538
call fcn.004066e3
test eax, eax
je 0x403be7
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov edi, ebp
inc word [0x436800]
sub esi, 1
jne 0x403b7a
xor ebx, ebx
push ebx
push 0x442800
call fcn.0040624a
mov ebp, ebx
jmp 0x403ab1
cmp dword [0x435ad4], 0
je 0x403c8c
lea eax, [esp + 0x14]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
test eax, eax
je 0x403c5c
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebx
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
push ebx
push ebx
push ebx
lea eax, [esp + 0x2c]
mov dword [esp + 0x2c], 1
push eax
push ebx
push dword [esp + 0x28]
mov dword [esp + 0x44], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.004068f3
mov esi, 0x80040002
test eax, eax
je 0x403c78
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x403c85
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403c8c
push 9
call fcn.00401533
cmp dword [0x435aec], 0xffffffff
cmovne ebp, dword [0x435aec]
push ebp
jmp 0x403ad1