Function at 0x4034fc
Capabilities:
Accept command line arguments
Check os version
Copy file
Delete file
Get common file path
Get file attributes
Get file system object information
Set current directory
Set environment variable
Shutdown system
Terminate process

Disassembly:
sub esp, 0x3f8
push ebp
push esi
push edi
push 0x20
pop edi
xor ebp, ebp
push 0x8001
mov dword [esp + 0x20], ebp
mov dword [esp + 0x18], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x14], ebp
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExW]
lea eax, [esp + 0x34]
push eax
mov dword [esp + 0x4c], ebp
mov dword [esp + 0x14c], ebp
mov dword [esp + 0x150], ebp
mov dword [esp + 0x38], 0x11c
call esi
test eax, eax
jne 0x403588
lea eax, [esp + 0x34]
mov dword [esp + 0x34], 0x114
push eax
call esi
mov ax, word [esp + 0x48]
mov ecx, dword [esp + 0x62]
sub ax, 0x53
add ecx, 0xffffffd0
neg ax
sbb eax, eax
mov byte [esp + 0x14e], 4
not eax
and eax, ecx
mov word [esp + 0x148], ax
cmp dword [esp + 0x38], 0xa
jae 0x403595
and word [esp + 0x42], 0
mov eax, dword [esp + 0x40]
movzx ecx, byte [esp + 0x3c]
mov dword [0x429ad8], eax
xor eax, eax
mov ah, byte [esp + 0x38]
movzx eax, ax
or eax, ecx
xor ecx, ecx
mov ch, byte [esp + 0x148]
movzx ecx, cx
shl eax, 0x10
or eax, ecx
movzx ecx, byte [esp + 0x14e]
or eax, ecx
mov dword [0x429adc], eax
cmp word [0x429ade], 0x600
je 0x4035ea
push ebp
call fcn.00406915
cmp eax, ebp
je 0x4035ea
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.004068a5
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea esi, [esi + eax + 1]
cmp byte [esi], 0
jne 0x4035ef
push 0xc
call fcn.00406915
push 0xa
call fcn.00406915
push 8
mov dword [0x429a24], eax
call fcn.00406915
cmp eax, ebp
je 0x403632
push 0x1e
call eax
test eax, eax
je 0x403632
or byte [0x429adc], 0x80
push ebx
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x429ae0], eax
push ebp
lea eax, [esp + 0x158]
push 0x2b4
push eax
push ebp
push 0x420ec8
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x428a20
call fcn.00406521
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ebx, 0x434000
push eax
push ebx
call fcn.00406521
push 0x22
mov dword [0x429a20], 0x400000
pop esi
mov eax, ebx
cmp word [0x434000], si
jne 0x40369f
mov edi, esi
mov eax, 0x434002
push edi
push eax
call fcn.00405e1d
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov dword [esp + 0x1c], ecx
jmp 0x4037ae
push 0x20
pop edx
cmp ax, dx
jne 0x4036c7
inc ecx
inc ecx
cmp word [ecx], dx
je 0x4036c0
cmp word [ecx], si
mov dword [esp + 0x10], edx
jne 0x4036d6
inc ecx
mov dword [esp + 0x10], esi
inc ecx
cmp word [ecx], 0x2f
jne 0x40379b
inc ecx
inc ecx
cmp word [ecx], 0x53
jne 0x403700
mov ax, word [ecx + 2]
cmp ax, dx
je 0x4036f6
cmp ax, bp
jne 0x403700
mov dword [0x429ac0], 1
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.NCRC]
or edi, eax
movzx eax, word [0x40a2b2]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx]
or edi, edx
cmp eax, esi
jne 0x403756
mov eax, dword [ecx + 4]
cmp eax, edi
jne 0x403756
mov ax, word [ecx + 8]
cmp ax, 0x20
je 0x403751
cmp ax, bp
jne 0x403756
or dword [esp + 0x14], 4
movzx eax, word [0x40a2aa]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40a2a8]
cdq
movzx edx, word [0x40a2a4]
or edi, eax
movzx eax, word [0x40a2a6]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx - 4]
or edi, edx
cmp eax, esi
jne 0x403798
mov eax, dword [ecx]
cmp eax, edi
je 0x4037bc
push 0x22
pop esi
push dword [esp + 0x10]
push ecx
call fcn.00405e1d
mov ecx, eax
cmp word [ecx], si
jne 0x4037ae
inc ecx
inc ecx
mov ax, word [ecx]
cmp ax, bp
jne 0x4036b8
jmp 0x4037ce
mov word [ecx - 4], bp
add ecx, 4
push ecx
push 0x434800
call fcn.00406521
mov edi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov esi, 0x436800
push esi
push 0x400
call edi
call fcn.004034cb
test eax, eax
jne 0x403840
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push esi
call sub.KERNEL32.dll_lstrcatW
call fcn.004034cb
test eax, eax
jne 0x403840
push esi
push 0x3fc
call edi
push 0x40a290
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 0x40a27c
call edi
call fcn.004034cb
test eax, eax
je 0x403a47
push 0x436000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x14]
call fcn.00403082
cmp eax, ebp
mov dword [esp + 0x18], eax
jne 0x403a47
cmp dword [0x429a3c], ebp
je 0x4038ff
push ebp
push ebx
call fcn.00405e1d
mov edi, eax
cmp edi, ebx
jb 0x4038c5
movzx eax, word [0x40a276]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov ebp, eax
movzx eax, word [0x40a274]
movzx ecx, word [0x40a270]
cdq
or ebp, eax
movzx eax, word [0x40a272]
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 0x4038bd
mov edx, dword [edi + 4]
cmp edx, eax
je 0x4038c3
dec edi
dec edi
cmp edi, ebx
jae 0x4038b0
xor ebp, ebp
cmp edi, ebx
mov dword [esp + 0x18], str.Error_launching_installer
jb 0x403914
mov word [edi], bp
add edi, 8
push edi
call fcn.00405ef8
test eax, eax
je 0x403a47
push edi
push 0x434800
call fcn.00406521
push edi
push 0x435000
call fcn.00406521
mov dword [esp + 0x18], ebp
or dword [0x429acc], 0xffffffff
call fcn.00403bf3
mov dword [esp + 0x20], eax
jmp 0x403a47
call fcn.00405aec
push esi
mov dword [esp + 0x28], eax
call sub.KERNEL32.dll_lstrlenW
push dword [esp + 0x1c]
mov edi, eax
push section..ndata
call fcn.00406521
cmp word [0x434800], bp
jne 0x40394b
push 0x435800
push 0x434800
call fcn.00406521
lea eax, [edi*2 + 0x436800]
mov dword [esp + 0x14], 1
mov dword [esp + 0x1c], eax
mov edi, 0x42c800
mov ebx, 0x42d000
mov dword [esp + 0x10], ebp
movzx ebp, word [esp + 0x14]
push ebp
push str.nsu_X.tmp
push dword [esp + 0x24]
call dword [sym.imp.USER32.dll_wsprintfW]
mov eax, dword [0x429a30]
add esp, 0xc
push dword [eax + 0x120]
push edi
call fcn.0040655e
cmp dword [esp + 0x24], 0
push esi
je 0x4039a4
call fcn.00405a75
jmp 0x4039a9
call fcn.00405acf
test eax, eax
je 0x4039e7
push edi
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
test ah, 4
jne 0x4039d8
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
test eax, eax
je 0x4039d8
push 1
push esi
call fcn.00405c2d
mov eax, dword [esp + 0x10]
inc dword [esp + 0x10]
test eax, eax
je 0x403971
inc dword [esp + 0x14]
xor ebp, ebp
cmp word [esp + 0x14], bp
jne 0x403968
jmp 0x403a47
push esi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
push 0
push esi
call fcn.004062e1
push 1
push edi
push 0x437800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403a45
push 0
push edi
call fcn.004062e1
mov eax, dword [0x429a30]
push dword [eax + 0x124]
push ebx
call fcn.0040655e
push ebx
call fcn.00405b04
test eax, eax
jne 0x403a6f
mov eax, dword [esp + 0x10]
inc dword [esp + 0x10]
test eax, eax
jne 0x403a45
push edi
call fcn.0040687e
test eax, eax
je 0x403971
xor ebp, ebp
call fcn.00403b19
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x18], ebp
pop ebx
je 0x403a7d
push 0x200010
push dword [esp + 0x18]
call fcn.00405b81
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
and dword [esp + 0x18], 0
jmp 0x403a45
cmp dword [0x429ab4], ebp
je 0x403b01
lea eax, [esp + 0x20]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
test eax, eax
je 0x403ad1
lea eax, [esp + 0x28]
push eax
push str.SeShutdownPrivilege
push ebp
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
push ebp
push ebp
lea eax, [esp + 0x2c]
push ebp
push eax
push ebp
push dword [esp + 0x34]
mov dword [esp + 0x3c], 1
mov dword [esp + 0x48], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.00406915
cmp eax, ebp
mov esi, 0x80040002
je 0x403aed
push esi
push 0x25
push ebp
push ebp
push ebp
call eax
test eax, eax
je 0x403afa
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403b01
push 9
call fcn.0040140b
mov eax, dword [0x429acc]
cmp eax, 0xffffffff
je 0x403b0f
mov dword [esp + 0x1c], eax
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_ExitProcess]