Function at 0x407030
Capabilities:
Delete file
Move file
Read file on windows
Set file attributes
Write file on windows

Disassembly:
sub esp, 0x18
push ebx
push ebp
push esi
push edi
xor edi, edi
mov esi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push edi
push 0x80
push 3
push edi
push 1
push bind
push 0x425d70
mov dword [esp + 0x38], edi
call esi
mov ebp, eax
cmp ebp, 0xffffffff
jne 0x40707d
push edi
push str.Error
push str.Cant_open_pack_file.
push edi
call dword [sym.imp.USER32.dll_MessageBoxA]
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 0x18
ret
push 0x80
push 0x42e388
call dword [sym.imp.KERNEL32.dll_SetFileAttributesA]
push edi
push 0x80
push 2
push edi
push edi
push 0x40000000
push 0x42e388
call esi
mov esi, eax
cmp esi, 0xffffffff
mov dword [esp + 0x18], esi
jne 0x4070d1
push edi
push str.Error
push str.Cant_create_temporary_file.
push edi
call dword [sym.imp.USER32.dll_MessageBoxA]
push ebp
call dword [sym.imp.KERNEL32.dll_CloseHandle]
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 0x18
ret
mov eax, dword [esp + 0x30]
mov dword [esp + 0x14], edi
cmp eax, edi
jle 0x4071ab
fild dword [esp + 0x30]
mov ebx, dword [esp + 0x2c]
fstp qword [esp + 0x20]
fild dword [esp + 0x14]
push 0
fmul qword [0x410978]
fdiv qword [esp + 0x24]
call sub.MSVCRT.dll__ftol
push eax
mov eax, dword [0x425a38]
push 0x402
push eax
call dword [sym.imp.USER32.dll_SendMessageA]
mov esi, dword [ebx + 0x18]
push esi
call sub.MSVCRT.dll_void____cdecl_operator_new_unsigned_int_
add esp, 4
mov edi, eax
test edi, edi
push 0
je 0x4071ef
mov ecx, dword [ebx]
push 0
push ecx
push ebp
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
test eax, eax
push 0
jl 0x407203
lea edx, [esp + 0x14]
push edx
push esi
push edi
push ebp
call dword [sym.imp.KERNEL32.dll_ReadFile]
mov eax, dword [esp + 0x10]
push 0
cmp eax, esi
jne 0x40720f
mov ecx, dword [esp + 0x1c]
lea eax, [esp + 0x14]
push eax
push esi
push edi
push ecx
call dword [sym.imp.KERNEL32.dll_WriteFile]
cmp dword [esp + 0x10], esi
jne 0x40721b
mov eax, dword [esp + 0x1c]
push edi
mov dword [ebx], eax
add eax, esi
mov dword [esp + 0x20], eax
call sub.MSVCRT.dll_void___cdecl_operator_delete_void__
mov eax, dword [esp + 0x18]
mov ecx, dword [esp + 0x34]
add esp, 4
inc eax
add ebx, 0x1c
cmp eax, ecx
mov dword [esp + 0x14], eax
jl 0x4070ed
mov esi, dword [esp + 0x18]
mov edi, dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebp
call edi
push esi
call edi
push 0x80
push 0x425d70
call dword [sym.imp.KERNEL32.dll_SetFileAttributesA]
push 0x425d70
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push 0x425d70
push 0x42e388
call dword [sym.imp.KERNEL32.dll_MoveFileA]
pop edi
pop esi
pop ebp
mov eax, 1
pop ebx
add esp, 0x18
ret
push str.Error
push str.Cant_create_the_buffer.
push 0
call dword [sym.imp.USER32.dll_MessageBoxA]
jmp 0x40723c
push str.Error
push str.Seek_error_on_pack_file.
jmp 0x407227
push str.Error
push str.Cant_read_from_the_pack_file.
jmp 0x407227
push 0
push str.Error
push str.Cant_write_to_the_temporary_file.
push 0
call dword [sym.imp.USER32.dll_MessageBoxA]
test edi, edi
je 0x40723c
push edi
call sub.MSVCRT.dll_void___cdecl_operator_delete_void__
add esp, 4
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebp
call esi
mov edx, dword [esp + 0x18]
push edx
call esi
push 0x42e388
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 0x18
ret