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, 0x2d4
push ebx
push esi
push edi
push 0x20
pop edi
xor ebx, ebx
push 0x8001
mov dword [esp + 0x14], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x1c], ebx
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
cmp ax, 6
je 0x403742
push ebx
call fcn.00406b60
cmp eax, ebx
je 0x403742
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.00406af0
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea esi, [esi + eax + 1]
cmp byte [esi], 0
jne 0x403747
push ebp
push 9
call fcn.00406b60
push 7
call fcn.00406b60
mov dword [0x437784], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x437838], eax
push ebx
lea eax, [esp + 0x34]
push 0x2b4
push eax
push ebx
push 0x42c280
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x436780
call fcn.004065de
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ebp, 0x442000
push eax
push ebp
call fcn.004065de
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x442000], 0x22
mov dword [0x437780], eax
mov eax, ebp
jne 0x4037db
push 0x22
mov eax, 0x442002
pop edi
push edi
push eax
call fcn.00405fbf
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov dword [esp + 0x18], ecx
mov ax, word [ecx]
cmp ax, bx
je 0x40390c
push 0x20
pop ebx
cmp ax, bx
jne 0x40380a
inc ecx
inc ecx
cmp word [ecx], bx
je 0x403803
cmp word [ecx], 0x22
jne 0x403815
inc ecx
push 0x22
inc ecx
pop ebx
cmp word [ecx], 0x2f
jne 0x4038d8
inc ecx
inc ecx
cmp word [ecx], 0x53
jne 0x403840
mov ax, word [ecx + 2]
cmp ax, 0x20
je 0x403836
test ax, ax
jne 0x403840
mov dword [0x437820], 1
movzx eax, word [0x40af62]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40af60]
cdq
movzx edx, word [str.NCRC]
or edi, eax
movzx eax, word [0x40af5e]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx]
or edi, edx
cmp eax, esi
jne 0x403896
mov eax, dword [ecx + 4]
cmp eax, edi
jne 0x403896
mov ax, word [ecx + 8]
cmp ax, 0x20
je 0x403891
test ax, ax
jne 0x403896
or dword [esp + 0x1c], 4
movzx eax, word [0x40af56]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40af54]
cdq
movzx edx, word [str.__D]
or edi, eax
movzx eax, word [0x40af52]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx - 4]
or edi, edx
cmp eax, esi
jne 0x4038d8
mov eax, dword [ecx]
cmp eax, edi
je 0x4038f7
push ebx
push ecx
call fcn.00405fbf
mov ecx, eax
cmp word [ecx], 0x22
jne 0x4038e9
inc ecx
inc ecx
mov ax, word [ecx]
test ax, ax
jne 0x4037fb
jmp 0x40390a
and word [ecx - 4], 0
add ecx, 4
push ecx
push 0x442800
call fcn.004065de
xor ebx, ebx
mov edi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov esi, 0x444800
push esi
push 0x400
call edi
call fcn.004036cb
test eax, eax
jne 0x40397e
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push esi
call sub.KERNEL32.dll_lstrcatW
call fcn.004036cb
test eax, eax
jne 0x40397e
push esi
push 0x3fc
call edi
push 0x40af3c
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 0x40af28
call edi
call fcn.004036cb
test eax, eax
je 0x403a50
push 0x444000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x1c]
call fcn.0040324a
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403a50
cmp dword [0x43779c], ebx
je 0x403a39
push ebx
push ebp
call fcn.00405fbf
mov edi, eax
cmp edi, ebp
jb 0x403a03
movzx eax, word [0x40af22]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov ebx, eax
movzx eax, word [0x40af20]
movzx ecx, word [str.___]
cdq
or ebx, eax
movzx eax, word [0x40af1e]
shl eax, 0x10
or eax, ecx
xor ecx, ecx
cdq
or ecx, eax
mov eax, ebx
or eax, edx
mov edx, dword [edi]
cmp edx, ecx
jne 0x4039fb
mov edx, dword [edi + 4]
cmp edx, eax
je 0x403a01
dec edi
dec edi
cmp edi, ebp
jae 0x4039ee
xor ebx, ebx
cmp edi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403a7c
mov word [edi], bx
add edi, 8
push edi
call fcn.0040609a
test eax, eax
je 0x403a50
push edi
push 0x442800
call fcn.004065de
push edi
push 0x443000
call fcn.004065de
mov dword [esp + 0x10], ebx
or dword [0x43782c], 0xffffffff
call fcn.00403d1d
push 1
mov dword [esp + 0x18], eax
call fcn.00406921
call fcn.00403c22
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
pop ebp
je 0x403b86
push 0x200010
push dword [esp + 0x10]
call fcn.00405cca
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.00405c4d
push 0x40af10
push esi
mov edi, eax
call sub.KERNEL32.dll_lstrcatW
cmp edi, ebx
je 0x403a9d
push 0x40af0c
push esi
call sub.KERNEL32.dll_lstrcatW
push str..tmp
push esi
call sub.KERNEL32.dll_lstrcatW
mov ebp, 0x443800
push ebp
push esi
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403a50
cmp edi, ebx
push esi
je 0x403ac5
call fcn.00405bb3
jmp 0x403aca
call fcn.00405c30
push esi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x442800], bx
jne 0x403ae5
push ebp
push 0x442800
call fcn.004065de
push dword [esp + 0x18]
push section..ndata
call fcn.004065de
movzx eax, word [0x40aefa]
movzx ecx, word [0x40aef8]
shl eax, 0x10
or eax, ecx
push 0x1a
mov dword [0x438800], eax
pop ebp
mov edi, 0x42ba80
mov eax, dword [0x437790]
push dword [eax + 0x120]
push edi
call fcn.00406600
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebx
je 0x403b70
push 1
push edi
push 0x445800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403b70
push ebx
push edi
call fcn.0040647f
mov eax, dword [0x437790]
push dword [eax + 0x124]
push edi
call fcn.00406600
push edi
call fcn.00405c65
cmp eax, ebx
je 0x403b70
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc word [0x438800]
dec ebp
jne 0x403b13
push ebx
push esi
call fcn.0040647f
jmp 0x403a50
cmp dword [0x437814], ebx
je 0x403c0a
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 0x403bda
lea eax, [esp + 0x20]
push eax
push str.SeShutdownPrivilege
push ebx
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
push ebx
push ebx
lea eax, [esp + 0x24]
push ebx
push eax
push ebx
push dword [esp + 0x28]
mov dword [esp + 0x34], 1
mov dword [esp + 0x40], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.00406b60
cmp eax, ebx
mov esi, 0x80040002
je 0x403bf6
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x403c03
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403c0a
push 9
call fcn.0040140b
mov eax, dword [0x43782c]
cmp eax, 0xffffffff
je 0x403c18
mov dword [esp + 0x10], eax
push dword [esp + 0x10]
call dword [sym.imp.KERNEL32.dll_ExitProcess]