Function at 0x4033bf
Capabilities:
Accept command line arguments
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, 0x17c
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 dword [esp + 0x14], ebx
mov ebp, ebx
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
push 6
and eax, 0xbfffffff
pop ecx
mov dword [0x42f0e0], eax
cmp ax, cx
je 0x40340a
push ebx
call fcn.004062a4
test eax, eax
je 0x40340a
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.00405c20
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
inc esi
add esi, eax
cmp byte [esi], bl
jne 0x40340f
push 0xa
call fcn.004062a4
push 8
call fcn.004062a4
push 6
mov dword [0x42e8d0], eax
call fcn.004062a4
test eax, eax
je 0x403453
push 0x1e
call eax
test eax, eax
je 0x403453
or dword [0x42f0e0], 0x40000000
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push ebx
push 0x160
mov dword [0x42f140], eax
lea eax, [esp + 0x34]
push eax
push ebx
push 0x40844b
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x42e8e0
call fcn.004064c9
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
mov ebx, 0x435000
push ebx
call fcn.004064c9
cmp byte [0x435000], 0x22
mov edx, 0x435001
mov dword [0x42e8d4], 0x400000
sete al
lea eax, [eax*2 + 0x20]
push eax
mov eax, ebx
cmove eax, edx
push eax
call fcn.00405fa2
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov ecx, eax
mov dword [esp + 0x14], ecx
jmp 0x40354e
inc ecx
mov dl, byte [ecx]
cmp dl, 0x20
je 0x4034d8
mov byte [esp + 0x18], 0x20
mov bl, dl
cmp dl, 0x22
jne 0x4034f3
mov bl, byte [ecx + 1]
mov byte [esp + 0x18], dl
lea eax, [ecx + 1]
cmovne eax, ecx
cmp bl, 0x2f
jne 0x40353a
inc eax
cmp byte [eax], 0x53
jne 0x40351a
mov cl, byte [eax + 1]
cmp cl, 0x20
je 0x403510
test cl, cl
jne 0x40351a
mov dword [0x42f1c0], 1
cmp dword [eax], 0x4352434e
jne 0x403531
mov cl, byte [eax + 4]
cmp cl, 0x20
je 0x40352e
test cl, cl
jne 0x403531
or ebp, 4
cmp dword [eax - 2], 0x3d442f20
je 0x403556
push dword [esp + 0x18]
push eax
call fcn.00405fa2
mov ecx, eax
mov dl, byte [ecx]
cmp dl, 0x22
jne 0x403550
inc ecx
mov dl, byte [ecx]
test dl, dl
jne 0x4034db
jmp 0x403568
mov byte [eax - 2], 0
add eax, 2
push eax
push 0x435400
call fcn.004064c9
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathA]
mov ebx, 0x436400
push ebx
push 0x400
call esi
call fcn.00403835
test eax, eax
jne 0x4035da
push 0x3fb
push ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebx
call sub.KERNEL32.dll_lstrcatA
call fcn.00403835
test eax, eax
jne 0x4035da
push ebx
push 0x3fc
call esi
push 0x408460
push ebx
call sub.KERNEL32.dll_lstrcatA
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
push ebx
push str.TEMP
call esi
push ebx
push 0x40846c
call esi
call fcn.00403835
test eax, eax
je 0x403773
mov ebx, dword [sym.imp.KERNEL32.dll_DeleteFileA]
push 0x436000
call ebx
push ebp
call fcn.004030b0
mov edi, eax
test edi, edi
jne 0x403773
cmp dword [0x42f0e8], eax
je 0x403651
push eax
mov ebp, 0x435000
push ebp
call fcn.00405fa2
mov esi, eax
jmp 0x403618
cmp dword [esi], 0x3d3f5f20
je 0x40361c
dec esi
cmp esi, ebp
jae 0x40360f
mov edi, str.Error_launching_installer
cmp esi, ebp
jb 0x403664
mov byte [esi], 0
add esi, 4
push esi
call fcn.00405fdf
test eax, eax
je 0x403773
push esi
push 0x435400
call fcn.004064c9
push esi
push 0x435800
call fcn.004064c9
xor edi, edi
or dword [0x42f1cc], 0xffffffff
call fcn.004054d0
mov ebx, eax
jmp 0x403777
call fcn.00405eaa
push str.nsu
mov ebp, 0x436400
mov esi, eax
push ebp
call sub.KERNEL32.dll_lstrcatA
test esi, esi
je 0x40368a
push 0x408478
push ebp
call sub.KERNEL32.dll_lstrcatA
push str..tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
push 0x435c00
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x403773
push ebp
test esi, esi
je 0x4036b5
call fcn.004058b6
jmp 0x4036ba
call fcn.00405896
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x435400], 0
jne 0x4036d9
push 0x435c00
push 0x435400
call fcn.004064c9
push dword [esp + 0x14]
push section..ndata
call fcn.004064c9
push 0x41
pop eax
push 0x1a
mov word [0x430400], ax
pop esi
mov eax, dword [0x42f0f4]
push dword [eax + 0x120]
push 0x429118
call fcn.00405932
push 0x429118
call ebx
test edi, edi
je 0x403761
push 1
push 0x429118
push 0x436c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403761
push 0
push 0x429118
call fcn.00405cbe
mov eax, dword [0x42f0f4]
push dword [eax + 0x124]
push 0x429118
call fcn.00405932
push 0x429118
call fcn.00406078
test eax, eax
je 0x403761
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
xor edi, edi
inc byte [0x430400]
sub esi, 1
jne 0x4036f3
push esi
push ebp
call fcn.00405cbe
mov ebx, dword [esp + 0x10]
call fcn.00403395
call dword [sym.imp.ole32.dll_OleUninitialize]
test edi, edi
je 0x403799
push 0x200010
push edi
call fcn.00406457
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
cmp dword [0x42f1b4], 0
je 0x403821
lea eax, [esp + 0x14]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
push 2
pop edi
test eax, eax
je 0x4037f0
lea eax, [esp + 0x20]
push eax
push str.SeShutdownPrivilege
push 0
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueA]
xor ecx, ecx
mov dword [esp + 0x1c], 1
push ecx
push ecx
push ecx
lea eax, [esp + 0x28]
mov dword [esp + 0x34], edi
push eax
push ecx
push dword [esp + 0x28]
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.004062a4
mov esi, 0x80040002
test eax, eax
je 0x40380e
push esi
push 0x25
xor ecx, ecx
push ecx
push ecx
push ecx
call eax
test eax, eax
je 0x40381a
push esi
push edi
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403821
push 9
call fcn.004014cb
cmp dword [0x42f1cc], 0xffffffff
cmovne ebx, dword [0x42f1cc]
push ebx
jmp 0x403793