Function at 0x140001590
Capabilities:
Encode data using xor
Generate random numbers using a mersenne twister

Disassembly:
mov qword [rsp + 0x10], rbx
mov qword [rsp + 0x18], rdi
push rbp
lea rbp, [rsp - 0x13e0]
mov eax, 0x14e0
call fcn.140004210
sub rsp, rax
mov rax, qword [0x140008040]
xor rax, rsp
mov qword [rbp + 0x13d0], rax
mov rbx, rcx
xor edx, edx
mov r8d, 0x108
lea rcx, [rsp + 0x30]
call sub.VCRUNTIME140.dll_memset
cmp qword [rbx + 0x18], 0xf
jbe 0x1400015e0
mov rbx, qword [rbx]
mov rdx, rbx
lea rcx, [rsp + 0x30]
call fcn.140002890
mov rax, qword [rsp + 0x30]
movsxd rcx, dword [rax + 4]
lea rdi, vtable.std::basic_ofstream_char__struct_std::char_traits_char__.0
mov qword [rsp + rcx + 0x30], rdi
mov rax, qword [rsp + 0x30]
movsxd rcx, dword [rax + 4]
lea edx, [rcx - 0xa8]
mov dword [rsp + rcx + 0x2c], edx
mov rax, qword [rsp + 0x30]
movsxd rcx, dword [rax + 4]
lea rax, [rsp + 0x30]
add rcx, rax
call qword [sym.imp.MSVCP140.dll_public:_bool___cdecl_std::ios_base::operator__void_const___ptr64]
test al, al
je 0x140001658
lea rdx, str.Erro_ao_abrir_o_arquivo.
mov rcx, qword [sym.imp.MSVCP140.dll_class_std::basic_ostream_char__struct_std::char_traits_char___std::cerr]
call fcn.140002b00
lea rdx, [0x140002cd0]
mov rcx, rax
call qword [sym.imp.MSVCP140.dll_public:_class_std::basic_ostream_char__struct_std::char_traits_char______ptr64___cdecl_std::basic_ostream_char__struct_std::char_traits_char__::operator___class_std::basic_ostream_char__struct_std::char_traits_char______ptr64____cdecl___class_std::basic_ostream_char__struct_std::char_traits_char______ptr64_____ptr64]
jmp 0x1400016f1
call qword [sym.imp.MSVCP140.dll_unsigned_int___cdecl_std::_Random_device_void_]
mov dword [rbp + 0x13c4], 0xffffffff
mov dword [rbp + 0x44], eax
mov edx, 1
mov ecx, eax
shr ecx, 0x1e
xor ecx, eax
imul eax, ecx, 0x6c078965
add eax, edx
mov dword [rbp + rdx*4 + 0x44], eax
inc rdx
cmp rdx, 0x270
jb 0x140001670
mov dword [rbp + 0x40], 0x270
mov ebx, 0x1e00
nop dword [rax + rax]
lea rcx, [rbp + 0x40]
call fcn.1400030c0
mov edx, eax
shl rdx, 8
shr rdx, 0x20
lea rcx, [rsp + 0x30]
call qword [sym.imp.MSVCP140.dll_public:_class_std::basic_ostream_char__struct_std::char_traits_char______ptr64___cdecl_std::basic_ostream_char__struct_std::char_traits_char__::put_char____ptr64]
sub rbx, 1
jne 0x1400016a0
lea rcx, [rsp + 0x38]
call fcn.1400027d0
test rax, rax
jne 0x1400016f1
mov rax, qword [rsp + 0x30]
movsxd rcx, dword [rax + 4]
lea rax, [rsp + 0x30]
add rcx, rax
xor r8d, r8d
lea edx, [rbx + 2]
call qword [sym.imp.MSVCP140.dll_public:_void___cdecl_std::basic_ios_char__struct_std::char_traits_char__::setstate_int__bool____ptr64]
nop
mov rax, qword [rsp + 0x30]
movsxd rcx, dword [rax + 4]
mov qword [rsp + rcx + 0x30], rdi
mov rax, qword [rsp + 0x30]
movsxd rcx, dword [rax + 4]
lea edx, [rcx - 0xa8]
mov dword [rsp + rcx + 0x2c], edx
lea rax, vtable.std::basic_filebuf_char__struct_std::char_traits_char__.0
mov qword [rsp + 0x38], rax
cmp qword [rbp - 0x48], 0
je 0x14000174e
mov rax, qword [rsp + 0x50]
lea rcx, [rbp - 0x58]
cmp qword [rax], rcx
jne 0x14000174e
mov rdx, qword [rbp - 0x38]
mov rcx, qword [rbp - 0x40]
mov qword [rax], rcx
mov rax, qword [rsp + 0x70]
mov qword [rax], rcx
sub edx, ecx
mov rax, qword [rbp - 0x78]
mov dword [rax], edx
cmp byte [rbp - 0x4c], 0
je 0x14000175e
lea rcx, [rsp + 0x38]
call fcn.1400027d0
lea rcx, [rsp + 0x38]
call qword [sym.imp.MSVCP140.dll_public_virtual:_void___cdecl_std::basic_streambuf_char__struct_std::char_traits_char__::destructor_void____ptr64]
nop
lea rcx, [rsp + 0x40]
call qword [sym.imp.MSVCP140.dll_public_virtual:_void___cdecl_std::basic_ostream_char__struct_std::char_traits_char__::destructor_void____ptr64]
lea rcx, [rbp - 0x28]
call qword [sym.imp.MSVCP140.dll_public_virtual:_void___cdecl_std::basic_ios_char__struct_std::char_traits_char__::destructor_void____ptr64]
mov rcx, qword [rbp + 0x13d0]
xor rcx, rsp
call fcn.1400033a0
lea r11, [rsp + 0x14e0]
mov rbx, qword [r11 + 0x18]
mov rdi, qword [r11 + 0x20]
mov rsp, r11
pop rbp
ret