Function at 0x404a7a
Capabilities:
Accept command line arguments
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:
push ebp
mov ebp, esp
push edi
push esi
push ebx
lea esi, [ebp - 0x3e8]
sub esp, 0x42c
mov dword [esp], 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
mov ebx, dword [sym.imp.KERNEL32.dll_GetVersionExW]
push eax
xor eax, eax
mov dword [ebp - 0x3d4], eax
mov dword [ebp - 0x2d4], eax
mov dword [ebp - 0x2d0], eax
mov dword [ebp - 0x3e8], 0x11c
mov dword [esp], esi
call ebx
push edx
test eax, eax
jne 0x404aff
mov dword [ebp - 0x3e8], 0x114
mov dword [esp], esi
call ebx
xor eax, eax
push edi
cmp word [ebp - 0x3d4], 0x53
mov byte [ebp - 0x2ce], 4
jne 0x404af8
mov ax, word [ebp - 0x3ba]
sub eax, 0x30
movzx eax, ax
mov word [ebp - 0x2d4], ax
mov edx, dword [ebp - 0x3e4]
cmp edx, 9
ja 0x404b14
and dword [ebp - 0x3dc], 0xffff
mov eax, dword [ebp - 0x3dc]
shl edx, 8
movzx ecx, byte [ebp - 0x2d4]
mov dword [0x40e058], eax
movzx eax, byte [ebp - 0x2ce]
shl ecx, 8
or eax, ecx
movzx ecx, byte [ebp - 0x3e0]
or edx, ecx
shl edx, 0x10
or eax, edx
mov dword [0x40e05c], eax
shr eax, 0x10
cmp eax, 0x600
je 0x404b6b
xor ebx, ebx
mov dword [esp], ebx
call fcn.004090f3
push esi
test eax, eax
je 0x404b6b
mov dword [esp], 0xc00
call eax
push ecx
mov ebx, str.UXTHEME
cmp byte [ebx], 0
je 0x404b8e
mov dword [esp], ebx
call fcn.00409065
push eax
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea ebx, [ebx + eax + 1]
push edx
jmp 0x404b70
mov dword [esp], 0xc
call fcn.004090f3
push ebx
mov dword [esp], 0xa
call fcn.004090f3
push esi
mov dword [esp], 8
mov dword [0x7aaa84], eax
call fcn.004090f3
push edi
test eax, eax
je 0x404bd3
mov dword [esp], 0x1e
call eax
push ecx
test eax, eax
je 0x404bd3
or byte [0x40e05c], 0x80
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
xor ecx, ecx
xor esi, esi
mov dword [esp], ecx
xor edi, edi
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [section..bss], eax
lea eax, [ebp - 0x2cc]
push ebx
mov dword [esp + 0x10], esi
mov dword [esp + 0xc], 0x2b4
mov dword [esp + 8], eax
mov dword [esp + 4], edi
mov dword [esp], 0x40d0ba
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
sub esp, 0x14
mov dword [esp + 4], str.NSIS_Error
mov dword [esp], 0x7aaaa0
call fcn.00408a84
push eax
push eax
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov esi, dword [0x40da14]
lea ecx, [esi + 0x28000]
mov dword [ebp - 0x3fc], ecx
mov dword [esp], ecx
mov dword [esp + 4], eax
call fcn.00408a84
push eax
push eax
xor eax, eax
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push edx
lea edx, [esi + 0x28002]
mov dword [0x7aaa88], eax
movzx eax, word [esi + 0x28000]
cmp eax, 0x22
je 0x404c82
mov edx, dword [ebp - 0x3fc]
mov eax, 0x20
mov dword [esp], edx
mov dword [esp + 4], eax
call fcn.00408377
push ebx
push ebx
mov dword [esp], eax
call dword [sym.imp.USER32.dll_CharNextW]
xor edx, edx
push edi
mov dword [ebp - 0x404], eax
mov dword [ebp - 0x400], edx
cmp word [eax], 0
je 0x404d79
movzx edx, word [eax]
cmp edx, 0x20
jne 0x404cbf
add eax, 2
jmp 0x404cb2
cmp edx, 0x22
jne 0x404cc9
add eax, 2
jmp 0x404cce
mov edx, 0x20
cmp word [eax], 0x2f
jne 0x404d59
cmp word [eax + 2], 0x53
lea ebx, [eax + 2]
jne 0x404cf8
mov cx, word [eax + 4]
and ecx, 0xffdf
jne 0x404cf8
mov dword [0x40e040], 1
cmp dword [eax + 6], 0x430052
jne 0x404d26
cmp dword [eax + 2], 0x43004e
jne 0x404d26
mov cx, word [eax + 0xa]
and ecx, 0xffdf
mov ecx, 4
cmovne ecx, dword [ebp - 0x400]
mov dword [ebp - 0x400], ecx
cmp dword [eax + 2], 0x3d0044
jne 0x404d57
cmp dword [eax - 2], 0x2f0020
jne 0x404d57
mov word [eax - 2], 0
add eax, 6
mov dword [esp + 4], eax
lea eax, [esi + 0x2a000]
mov dword [esp], eax
call fcn.00408a84
push ecx
push ecx
jmp 0x404d79
mov eax, ebx
mov dword [esp + 4], edx
mov dword [esp], eax
call fcn.00408377
push edx
push edx
cmp word [eax], 0x22
jne 0x404ca8
add eax, 2
jmp 0x404ca8
mov dword [esp], 0x1000
lea ebx, [esi + 0x32000]
mov edi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov dword [esp + 4], ebx
call edi
push eax
push eax
call fcn.004049d8
test eax, eax
jne 0x404e32
mov dword [esp + 4], 0xffb
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push eax
push eax
mov dword [esp + 4], str.Temp
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrcatW
push eax
push eax
call fcn.004049d8
test eax, eax
jne 0x404e32
mov dword [esp + 4], ebx
mov dword [esp], 0xffc
call edi
push ecx
push ecx
mov dword [esp + 4], 0x40d0de
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrcatW
push edi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
mov dword [esp + 4], ebx
mov dword [esp], str.TEMP
call edi
push eax
push eax
mov dword [esp + 4], ebx
mov dword [esp], 0x40d0f0
call edi
push eax
push eax
call fcn.004049d8
test eax, eax
jne 0x404e32
call fcn.00404a33
mov edi, str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
call dword [sym.imp.ole32.dll_OleUninitialize]
jmp 0x405134
lea eax, [esi + 0x30000]
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push eax
mov eax, dword [ebp - 0x400]
mov dword [esp], eax
call fcn.004046c8
test eax, eax
mov edi, eax
push edx
jne 0x405117
cmp dword [0x418124], 0
je 0x4050ec
xor ecx, ecx
mov dword [esp + 4], ecx
mov eax, dword [ebp - 0x3fc]
mov dword [esp], eax
call fcn.00408377
push edi
push edi
mov ecx, dword [ebp - 0x3fc]
cmp eax, ecx
jb 0x404ee4
cmp dword [eax + 4], 0x3d003f
je 0x404e96
sub eax, 2
jmp 0x404e7e
cmp dword [eax], 0x5f0020
jne 0x404e91
mov word [eax], 0
lea ebx, [eax + 8]
mov dword [esp], ebx
call fcn.00408fb3
push edx
test eax, eax
je 0x405124
mov dword [esp + 4], ebx
lea eax, [esi + 0x2a000]
mov dword [esp], eax
call fcn.00408a84
lea eax, [esi + 0x2c000]
push edi
push edi
mov dword [esp + 4], ebx
mov dword [esp], eax
call fcn.00408a84
push eax
push eax
jmp 0x4050ec
call fcn.0040913f
lea edi, [esi + 0xa000]
mov dword [ebp - 0x40c], eax
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrlenW
push edx
mov dword [ebp - 0x3fc], eax
lea eax, [esi + 0xc000]
mov dword [ebp - 0x408], eax
mov eax, dword [ebp - 0x404]
mov dword [esp], esi
mov dword [esp + 4], eax
call fcn.00408a84
push ecx
push ecx
cmp word [esi + 0x2a000], 0
jne 0x404f48
lea eax, [esi + 0x2e000]
mov dword [esp + 4], eax
lea eax, [esi + 0x2a000]
mov dword [esp], eax
call fcn.00408a84
push eax
push eax
mov eax, dword [ebp - 0x3fc]
mov dword [ebp - 0x400], 1
lea eax, [esi + eax*2 + 0x32000]
mov dword [ebp - 0x404], eax
xor eax, eax
mov dword [ebp - 0x3fc], eax
mov eax, dword [ebp - 0x400]
mov dword [esp + 4], str.nsu_X.tmp
mov dword [esp + 8], eax
mov eax, dword [ebp - 0x404]
mov dword [esp], eax
call dword [sym.imp.USER32.dll_wsprintfW]
mov eax, dword [0x418130]
mov eax, dword [eax + 0x120]
mov dword [esp], edi
mov dword [esp + 4], eax
call fcn.00409166
push ecx
push ecx
cmp dword [ebp - 0x40c], 0
mov dword [esp], ebx
je 0x404fba
call fcn.004081c0
jmp 0x404fbf
call fcn.00408220
test eax, eax
push edx
je 0x405018
mov dword [esp], edi
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
push ecx
bt eax, 0xa
jb 0x4050d2
mov dword [esp], edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push edx
test eax, eax
je 0x4050d2
mov dword [esp + 4], 1
mov dword [esp], ebx
call fcn.004096e8
push eax
push eax
cmp dword [ebp - 0x3fc], 0
jne 0x4050d2
mov dword [ebp - 0x3fc], 1
jmp 0x404f6d
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
xor eax, eax
push ecx
mov dword [esp + 4], eax
mov dword [esp], ebx
call fcn.004096a3
push eax
push eax
lea eax, [esi + 0x36000]
mov dword [esp + 8], 1
mov dword [esp + 4], edi
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_CopyFileW]
sub esp, 0xc
test eax, eax
je 0x405124
mov dword [esp], edi
xor eax, eax
mov dword [esp + 4], eax
call fcn.004096a3
push eax
push eax
mov eax, dword [0x418130]
mov eax, dword [eax + 0x124]
mov dword [esp + 4], eax
mov eax, dword [ebp - 0x408]
mov dword [esp], eax
call fcn.00409166
push eax
push eax
mov eax, dword [ebp - 0x408]
mov dword [esp], eax
call fcn.0040824c
push edx
test eax, eax
je 0x4050b6
mov dword [esp], eax
xor ebx, ebx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ecx
call fcn.00404a33
call dword [sym.imp.ole32.dll_OleUninitialize]
jmp 0x405152
cmp dword [ebp - 0x3fc], 0
jne 0x405124
mov dword [esp], edi
call fcn.00408f7b
push edx
test eax, eax
je 0x405009
jmp 0x405124
mov eax, dword [ebp - 0x400]
inc eax
and eax, 0xffff
mov dword [ebp - 0x400], eax
jne 0x404f65
jmp 0x405124
mov dword [0x40e04c], 0xffffffff
call fcn.00406b75
mov dword [esp], 1
mov ebx, eax
call fcn.00408c19
push eax
call fcn.00404a33
call dword [sym.imp.ole32.dll_OleUninitialize]
jmp 0x405152
call fcn.00404a33
call dword [sym.imp.ole32.dll_OleUninitialize]
jmp 0x405134
call fcn.00404a33
mov edi, str.Error_launching_installer
call dword [sym.imp.ole32.dll_OleUninitialize]
mov dword [esp + 4], 0x200010
mov dword [esp], edi
call fcn.0040830b
push eax
push eax
mov dword [esp], 2
jmp 0x40525a
cmp dword [0x40e034], 0
je 0x40524c
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
lea edx, [ebp - 0x3ec]
mov dword [esp + 8], edx
mov dword [esp + 4], 0x28
mov dword [esp], eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
sub esp, 0xc
test eax, eax
je 0x4051eb
mov dword [esp + 4], str.SeShutdownPrivilege
lea eax, [ebp - 0x2c8]
xor edi, edi
mov dword [esp + 8], eax
lea esi, [ebp - 0x2cc]
mov dword [esp], edi
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
xor eax, eax
mov dword [ebp - 0x2cc], 1
mov dword [ebp - 0x2c0], 2
sub esp, 0xc
mov dword [esp + 0x14], eax
mov dword [esp + 0x10], eax
mov dword [esp + 0xc], eax
xor eax, eax
mov dword [esp + 8], esi
mov dword [esp + 4], eax
mov eax, dword [ebp - 0x3ec]
mov dword [esp], eax
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
sub esp, 0x18
mov dword [esp], 4
call fcn.004090f3
push esi
test eax, eax
jne 0x405219
mov dword [esp + 4], 0x80040002
mov dword [esp], 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
push ecx
test eax, eax
push ecx
je 0x40523f
jmp 0x40524c
mov dword [esp + 0x10], 0x80040002
xor edx, edx
mov dword [esp + 0xc], 0x25
mov dword [esp + 8], edx
mov dword [esp + 4], edx
mov dword [esp], edx
call eax
sub esp, 0x14
test eax, eax
jne 0x4051fc
mov dword [esp], 9
call fcn.0040426a
push eax
mov eax, dword [0x40e04c]
cmp eax, 0xffffffff
cmovne ebx, eax
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_ExitProcess]