Function at 0x403587
Capabilities:
Accept command line arguments
Copy file
Create directory
Delete file
Get common file path
Get file system object information
Set current directory
Shutdown system
Terminate process

Disassembly:
sub esp, 0x180
push ebx
push ebp
push esi
xor ebx, ebx
push edi
mov dword [esp + 0x18], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
xor esi, esi
mov byte [esp + 0x14], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x454058], eax
call fcn.0040645f
mov dword [0x453fa4], eax
push ebx
lea eax, [esp + 0x34]
push 0x160
push eax
push ebx
push 0x434fb4
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x44ffa0
call fcn.00405f6a
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov edi, 0x47d000
push eax
push edi
call fcn.00405f6a
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x47d000], 0x22
mov dword [0x453fa0], eax
mov eax, edi
jne 0x403628
mov byte [esp + 0x14], 0x22
mov eax, 0x47d001
push dword [esp + 0x14]
push eax
call fcn.00405a7e
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
mov cl, byte [eax]
cmp cl, bl
je 0x4036b9
cmp cl, 0x20
jne 0x40364e
inc eax
cmp byte [eax], 0x20
je 0x403648
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x40365e
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x403696
inc eax
cmp byte [eax], 0x53
jne 0x403677
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x403677
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x40368d
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x40368d
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x4036a8
push dword [esp + 0x14]
push eax
call fcn.00405a7e
cmp byte [eax], 0x22
jne 0x40363d
inc eax
jmp 0x40363d
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x47f000
call fcn.00405f6a
mov ebp, 0x487000
push ebp
push 0x2000
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403553
test eax, eax
jne 0x4036f7
push 0x1ffb
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call fcn.00405f8d
call fcn.00403553
test eax, eax
je 0x40377c
push 0x485000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.004030ab
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x40377c
cmp dword [0x453fbc], ebx
je 0x403765
push ebx
push edi
call fcn.00405a7e
mov esi, eax
cmp esi, edi
jb 0x403730
cmp dword [esi], 0x3d3f5f20
je 0x403730
dec esi
jmp 0x403721
cmp esi, edi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x4037a7
mov byte [esi], bl
add esi, 4
push esi
call fcn.00405b36
test eax, eax
je 0x40377c
push esi
push 0x47f000
call fcn.00405f6a
push esi
push 0x481000
call fcn.00405f6a
mov dword [esp + 0x10], ebx
or dword [0x45404c], 0xffffffff
call fcn.00403957
push 1
mov dword [esp + 0x1c], eax
call fcn.0040628b
call fcn.00403911
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403876
push 0x200010
push dword [esp + 0x14]
call fcn.004057b4
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call fcn.00405f8d
mov esi, 0x483000
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40377c
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x47f000], bl
jne 0x4037e5
push esi
push 0x47f000
call fcn.00405f6a
push dword [esp + 0x1c]
push section..ndata
call fcn.00405f6a
push 0x1a
mov word [0x457000], 0x41
pop edi
mov esi, 0x432fb4
mov eax, dword [0x453fb0]
push dword [eax + 0x120]
push esi
call fcn.00405f9e
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403861
push 1
push esi
push 0x48b000
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403861
push ebx
push esi
call fcn.00405cb7
mov eax, dword [0x453fb0]
push dword [eax + 0x124]
push esi
call fcn.00405f9e
push esi
call fcn.00405744
cmp eax, ebx
je 0x403861
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x457000]
dec edi
jne 0x403804
push ebx
push ebp
call fcn.00405cb7
jmp 0x40377c
cmp dword [0x454034], ebx
je 0x4038f9
push 3
call fcn.0040645f
push 4
mov ebp, eax
call fcn.0040645f
push 5
mov esi, eax
call fcn.0040645f
cmp ebp, ebx
mov edi, eax
je 0x4038e5
cmp esi, ebx
je 0x4038e5
cmp edi, ebx
je 0x4038e5
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4038e5
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
lea eax, [esp + 0x28]
push ebx
push eax
push ebx
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push ebx
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4038f9
push 9
call fcn.00401430
mov eax, dword [0x45404c]
cmp eax, 0xffffffff
je 0x403907
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]