Function at 0x4040c0
Capabilities:
Accept command line arguments
Copy file
Delete file
Get common file path
Terminate process

Disassembly:
sub esp, 0xc
and dword [esp + 4], 0
push ebx
push ebp
push esi
push edi
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov bl, 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0
call dword [sym.imp.ole32.dll_OleInitialize]
mov esi, 0x42b400
mov edi, 0x400
push esi
push edi
mov dword [0x424fc8], eax
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.0040408c
mov ebp, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x40412b
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebp
call fcn.0040408c
test eax, eax
je 0x40427e
mov esi, 0x424740
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push str.NSIS_Error
push esi
call fcn.00406c62
push edi
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov esi, 0x42a000
push eax
push esi
call dword [sym.imp.KERNEL32.dll_lstrcpynA]
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x42a000], 0x22
mov dword [0x424f40], eax
mov eax, esi
jne 0x404175
mov bl, 0x22
mov eax, 0x42a001
mov cl, byte [eax]
mov edi, dword [sym.imp.USER32.dll_CharNextA]
test cl, cl
je 0x40418e
cmp cl, bl
je 0x40418e
push eax
call edi
mov cl, byte [eax]
test cl, cl
jne 0x404181
push eax
call edi
mov esi, eax
mov dword [esp + 0x18], esi
cmp byte [esi], 0x20
jne 0x4041a3
push esi
call edi
mov esi, eax
jmp 0x404197
cmp byte [esi], 0x2f
jne 0x4041ff
inc esi
cmp byte [esi], 0x53
jne 0x4041bc
mov al, byte [esi + 1]
or al, 0x20
cmp al, 0x20
jne 0x4041bc
or dword [esp + 0x14], 2
cmp dword [esi], 0x4352434e
jne 0x4041d2
mov al, byte [esi + 4]
or al, 0x20
cmp al, 0x20
jne 0x4041d2
or dword [esp + 0x14], 4
cmp word [esi], 0x3d44
je 0x4041e8
mov al, byte [esi]
or al, 0x20
cmp al, 0x20
je 0x404197
push esi
call edi
mov esi, eax
jmp 0x4041d9
and byte [esi - 2], 0
add esi, 2
push esi
push 0x42a400
call fcn.00406c62
mov esi, 0x4210f8
push dword [esp + 0x14]
call fcn.00403a03
xor ebx, ebx
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x40427e
cmp dword [0x424f58], ebx
je 0x404275
cmp byte [esi], bl
mov edi, esi
je 0x40422a
inc edi
cmp byte [edi], 0
jne 0x404220
cmp edi, esi
jb 0x40423e
cmp byte [edi], 0x5f
jne 0x40423b
cmp byte [edi + 1], 0x3f
jne 0x40423b
cmp byte [edi + 2], 0x3d
je 0x40423e
dec edi
jmp 0x404226
cmp edi, esi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x4042b2
and byte [edi - 1], 0
add edi, 3
push edi
call fcn.00406844
test eax, eax
je 0x40427e
push edi
push 0x42a400
call fcn.00406c62
push edi
push 0x42a800
call fcn.00406c62
mov dword [esp + 0x10], ebx
call fcn.004043e1
mov dword [esp + 0x18], eax
call fcn.004043a4
cmp dword [esp + 0x10], 0
pop edi
pop esi
pop ebp
pop ebx
je 0x40429c
push 0x100010
push dword [esp + 4]
call fcn.00406505
call dword [sym.imp.ole32.dll_OleUninitialize]
push dword [esp + 8]
call dword [sym.imp.KERNEL32.dll_ExitProcess]
mov dword [esp + 0x14], ebx
mov edi, 0x4208f9
mov esi, 0x4208f8
mov ebx, 0x4204f8
push 0x42b400
push edi
mov byte [0x4208f8], 0x22
call fcn.00406c62
push str.ANSISu_.exe
push esi
call ebp
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], 0
je 0x40438a
push 0x400
push ebx
push dword [0x424f40]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x4204ed]
push 0x40a275
push eax
call fcn.0040716d
test eax, eax
je 0x40427e
push 0
push edi
push ebx
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x40438a
push 0
push edi
call fcn.0040699e
cmp byte [0x42a400], 0
je 0x404348
push 0x42a400
push ebx
call fcn.00406c62
jmp 0x40434e
push ebx
call fcn.004065f5
push 0x40a28c
push esi
call ebp
push dword [esp + 0x18]
push esi
call ebp
push str.___
push esi
call ebp
push ebx
push esi
call ebp
push esi
call fcn.004065c9
push 0x42b400
push esi
call fcn.0040647e
test eax, eax
je 0x40438a
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
and dword [esp + 0x10], 0
inc byte [str.ANSISu_.exe]
inc dword [esp + 0x14]
cmp dword [esp + 0x14], 0x1a
jl 0x4042c5
jmp 0x40427e