Function at 0x404053
Capabilities:
Accept command line arguments
Copy file
Delete file
Get common file path
Terminate process

Disassembly:
sub esp, 0x10
push ebx
push ebp
push esi
push edi
mov dword [esp + 0x14], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
xor ebp, ebp
mov byte [esp + 0x13], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
mov esi, 0x42a400
mov edi, 0x400
push esi
push edi
mov dword [0x423fa8], eax
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.0040401f
mov ebx, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x4040bd
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebx
call fcn.0040401f
test eax, eax
je 0x40420e
mov esi, 0x423720
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push str.NSIS_Error
push esi
call sub.KERNEL32.dll_lstrcpyA
push edi
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov esi, 0x429000
push eax
push esi
call dword [sym.imp.KERNEL32.dll_lstrcpynA]
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x429000], 0x22
mov dword [0x423f20], eax
mov eax, esi
jne 0x40410a
mov byte [esp + 0x13], 0x22
mov eax, 0x429001
mov edi, dword [sym.imp.USER32.dll_CharNextA]
jmp 0x40411b
cmp cl, byte [esp + 0x13]
je 0x404121
push eax
call edi
mov cl, byte [eax]
test cl, cl
jne 0x404112
push eax
call edi
mov esi, eax
mov dword [esp + 0x1c], esi
jmp 0x404131
push esi
call edi
mov esi, eax
cmp byte [esi], 0x20
je 0x40412c
cmp byte [esi], 0x2f
jne 0x40417f
inc esi
cmp byte [esi], 0x53
jne 0x40414d
mov al, byte [esi + 1]
or al, 0x20
cmp al, 0x20
jne 0x40414d
or ebp, 2
cmp dword [esi], 0x4352434e
jne 0x404161
mov al, byte [esi + 4]
or al, 0x20
cmp al, 0x20
jne 0x404161
or ebp, 4
cmp word [esi], 0x3d44
jne 0x4041ab
and byte [esi - 2], 0
add esi, 2
push esi
push 0x429400
call sub.KERNEL32.dll_lstrcpyA
mov esi, 0x4200f0
push ebp
call fcn.004039b8
xor ebp, ebp
cmp eax, ebp
mov dword [esp + 0x14], eax
jne 0x40420e
cmp dword [0x423f38], ebp
je 0x404205
cmp byte [esi], 0
mov edi, esi
je 0x4041b8
inc edi
cmp byte [edi], 0
jne 0x40419e
jmp 0x4041ca
push esi
call edi
mov esi, eax
mov al, byte [esi]
or al, 0x20
cmp al, 0x20
jne 0x4041a6
jmp 0x404131
cmp byte [edi], 0x5f
jne 0x4041c9
cmp byte [edi + 1], 0x3f
jne 0x4041c9
cmp byte [edi + 2], 0x3d
je 0x4041ce
dec edi
cmp edi, esi
jae 0x4041b8
cmp edi, esi
mov dword [esp + 0x14], str.Error_launching_installer
jb 0x40423c
and byte [edi - 1], 0
add edi, 3
push edi
call fcn.00406582
test eax, eax
je 0x40420e
push edi
push 0x429400
call sub.KERNEL32.dll_lstrcpyA
push edi
push 0x429800
call sub.KERNEL32.dll_lstrcpyA
mov dword [esp + 0x14], ebp
call fcn.0040436c
mov dword [esp + 0x1c], eax
call fcn.0040432f
cmp dword [esp + 0x14], 0
pop edi
pop esi
pop ebp
pop ebx
je 0x40422c
push 0x100010
push dword [esp + 8]
call fcn.004063f8
call dword [sym.imp.ole32.dll_OleUninitialize]
push dword [esp + 0xc]
call dword [sym.imp.KERNEL32.dll_ExitProcess]
mov dword [esp + 0x18], ebp
mov edi, 0x41f8f1
mov esi, 0x41f8f0
mov ebp, 0x41f4f0
push 0x42a400
push edi
mov byte [0x41f8f0], 0x22
call sub.KERNEL32.dll_lstrcpyA
push str.ANSISu_.exe
push esi
call ebx
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x14], 0
je 0x404315
push 0x400
push ebp
push dword [0x423f20]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x41f4e5]
push 0x40927d
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40420e
push 0
push edi
push ebp
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x404315
push 0
push edi
call fcn.004066d6
cmp byte [0x429400], 0
je 0x4042d3
push 0x429400
push ebp
call sub.KERNEL32.dll_lstrcpyA
jmp 0x4042d9
push ebp
call fcn.004064de
push 0x409294
push esi
call ebx
push dword [esp + 0x1c]
push esi
call ebx
push 0x40928c
push esi
call ebx
push ebp
push esi
call ebx
push esi
call fcn.004064b2
push 0x42a400
push esi
call fcn.00406380
test eax, eax
je 0x404315
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
and dword [esp + 0x14], 0
inc byte [str.ANSISu_.exe]
inc dword [esp + 0x18]
cmp dword [esp + 0x18], 0x1a
jl 0x40424f
jmp 0x40420e