Function at 0x1400040e0
Capabilities:
Copy file
Encode data using xor
Generate random numbers using a mersenne twister
Move file

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rsi
mov qword [rsp + 0x18], rdi
mov qword [rsp + 0x20], r14
push rbp
lea rbp, [rsp - 0x1560]
mov eax, 0x1660
call fcn.14006d1e0
sub rsp, rax
mov rax, qword [0x1400dc010]
xor rax, rsp
mov qword [rbp + 0x1550], rax
xor esi, esi
mov dword [rsp + 0x44], esi
xor ecx, ecx
call qword [sym.imp.api_ms_win_crt_time_l1_1_0.dll__time64]
mov rcx, rax
call qword [sym.imp.api_ms_win_crt_utility_l1_1_0.dll_srand]
mov r8d, 0x104
lea rdx, [rbp + 0x1440]
xor ecx, ecx
call qword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea rcx, [rsp + 0x48]
call fcn.140016f20
nop
lea rcx, [rsp + 0x68]
call fcn.140016f20
nop
lea rdx, [rsp + 0x48]
cmp qword [rsp + 0x60], 0x10
cmovae rdx, qword [rsp + 0x48]
lea rcx, [rbp + 0x1440]
call qword [sym.imp.api_ms_win_crt_filesystem_l1_1_0.dll_rename]
test eax, eax
je 0x1400041a2
lea rdx, [0x140070de6]
mov rcx, qword [sym.imp.MSVCP140.dll_class_std::basic_ostream_char__struct_std::char_traits_char___std::cerr]
call fcn.14000eb10
lea rdx, [0x14000ece0]
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]
mov rdi, qword [rsp + 0x58]
lea r9, [rsp + 0x48]
cmp qword [rsp + 0x60], 0x10
cmovae r9, qword [rsp + 0x48]
mov rax, qword [0x14015d320]
cmp rdi, rax
ja 0x1400041f2
lea rbx, [0x14015d308]
cmp rax, 0x10
cmovae rbx, qword [0x14015d308]
mov qword [0x14015d318], rdi
mov r8, rdi
mov rdx, r9
mov rcx, rbx
call sub.VCRUNTIME140.dll_memmove
mov byte [rdi + rbx], 0
jmp 0x140004201
mov rdx, rdi
lea rcx, [0x14015d308]
call fcn.14000ef90
lea rdx, [rsp + 0x68]
cmp qword [rbp - 0x80], 0x10
cmovae rdx, qword [rsp + 0x68]
lea rcx, [rsp + 0x48]
cmp qword [rsp + 0x60], 0x10
cmovae rcx, qword [rsp + 0x48]
xor r8d, r8d
call qword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x140004533
xor edx, edx
mov r8d, 0x118
lea rcx, [rbp - 0x70]
call sub.VCRUNTIME140.dll_memset
lea rbx, [rsp + 0x68]
cmp qword [rbp - 0x80], 0x10
cmovae rbx, qword [rsp + 0x68]
lea rax, [0x1400c9fe8]
mov qword [rbp - 0x70], rax
lea rax, [0x140072250]
mov qword [rbp - 0x60], rax
lea rcx, [rbp + 0x48]
call qword [sym.imp.MSVCP140.dll_protected:_void___cdecl_std::basic_ios_char__struct_std::char_traits_char__::constructor_void____ptr64]
nop
mov edi, 1
mov dword [rsp + 0x44], edi
xor r8d, r8d
lea rdx, [rbp - 0x58]
lea rcx, [rbp - 0x70]
call qword [sym.imp.MSVCP140.dll_public:_void___cdecl_std::basic_iostream_char__struct_std::char_traits_char__::constructor_class_std::basic_streambuf_char__struct_std::char_traits_char______ptr64____ptr64]
nop
mov rax, qword [rbp - 0x70]
movsxd rcx, dword [rax + 4]
lea r14, vtable.std::basic_fstream_char__struct_std::char_traits_char__.0
mov qword [rbp + rcx - 0x70], r14
mov rax, qword [rbp - 0x70]
movsxd rcx, dword [rax + 4]
lea edx, [rcx - 0xb8]
mov dword [rbp + rcx - 0x74], edx
lea rcx, [rbp - 0x58]
call qword [sym.imp.MSVCP140.dll_protected:_void___cdecl_std::basic_streambuf_char__struct_std::char_traits_char__::constructor_void____ptr64]
lea rax, vtable.std::basic_filebuf_char__struct_std::char_traits_char__.0
mov qword [rbp - 0x58], rax
mov byte [rbp + 0x24], 0
mov byte [rbp + 0x19], 0
lea rcx, [rbp - 0x58]
call qword [sym.imp.MSVCP140.dll_protected:_void___cdecl_std::basic_streambuf_char__struct_std::char_traits_char__::_Init_void____ptr64]
mov qword [rbp + 0x28], rsi
mov rax, qword [0x14015ec38]
mov qword [rbp + 0x1c], rax
mov qword [rbp + 0x10], rsi
lea r8d, [rdi + 0x22]
mov rdx, rbx
lea rcx, [rbp - 0x58]
call fcn.14000e740
test rax, rax
jne 0x140004321
mov rax, qword [rbp - 0x70]
movsxd rcx, dword [rax + 4]
lea rax, [rbp - 0x70]
add rcx, rax
xor r8d, r8d
lea edx, [rdi + 1]
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 [rbp - 0x70]
movsxd rcx, dword [rax + 4]
mov qword [rbp + rcx - 0x70], r14
mov rax, qword [rbp - 0x70]
movsxd rcx, dword [rax + 4]
lea edx, [rcx - 0xb8]
mov dword [rbp + rcx - 0x74], edx
cmp qword [rbp + 0x28], 0
je 0x1400044f6
mov byte [rsp + 0x40], 2
xor edx, edx
lea r8d, [rdx + 2]
lea rcx, [rbp - 0x60]
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__::seekp_long_long___int64___int____ptr64]
mov r8, rdi
lea rdx, [rsp + 0x40]
lea rcx, [rbp - 0x60]
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__::write_char_const____ptr64__long_long___int64_____ptr64]
xor edx, edx
lea r8d, [rdx + 2]
lea rcx, [rbp - 0x70]
call qword [sym.imp.MSVCP140.dll_public:_class_std::basic_istream_char__struct_std::char_traits_char______ptr64___cdecl_std::basic_istream_char__struct_std::char_traits_char__::seekg_long_long___int64___int____ptr64]
lea rdx, [rsp + 0x28]
lea rcx, [rbp - 0x70]
call qword [sym.imp.MSVCP140.dll_public:_class_std::fpos_struct__Mbstatet____cdecl_std::basic_istream_char__struct_std::char_traits_char__::tellg_void____ptr64]
mov rbx, qword [rax + 8]
add rbx, qword [rax]
xor r8d, r8d
xor edx, edx
lea rcx, [rbp - 0x70]
call qword [sym.imp.MSVCP140.dll_public:_class_std::basic_istream_char__struct_std::char_traits_char______ptr64___cdecl_std::basic_istream_char__struct_std::char_traits_char__::seekg_long_long___int64___int____ptr64]
test ebx, ebx
jle 0x1400044cb
nop
lea rdx, [rsp + 0x41]
lea rcx, [rbp - 0x70]
call qword [sym.imp.MSVCP140.dll_public:_class_std::basic_istream_char__struct_std::char_traits_char______ptr64___cdecl_std::basic_istream_char__struct_std::char_traits_char__::get_char____ptr64____ptr64]
inc esi
cmp byte [rsp + 0x41], 0x56
je 0x1400043d1
cmp esi, ebx
jl 0x1400043b0
jmp 0x1400044cb
test esi, esi
je 0x1400044cb
call qword [sym.imp.MSVCP140.dll_unsigned_int___cdecl_std::_Random_device_void_]
mov dword [rbp + 0x1434], 0xffffffff
mov dword [rbp + 0xb4], eax
mov r9d, 0x270
nop word [rax + rax]
mov ecx, eax
shr ecx, 0x1e
xor ecx, eax
imul eax, ecx, 0x6c078965
add eax, edi
mov dword [rbp + rdi*4 + 0xb4], eax
inc rdi
cmp rdi, r9
jb 0x140004400
mov dword [rbp + 0xb0], r9d
lea r8, [rbp + 0xb8]
nop dword [rax]
mov edx, dword [r8 - 4]
xor edx, dword [r8]
btr edx, 0x1f
xor edx, dword [r8 - 4]
mov eax, edx
and al, 1
neg al
sbb ecx, ecx
and ecx, 0x9908b0df
shr edx, 1
xor ecx, edx
xor ecx, dword [r8 + 0x630]
mov dword [r8 + 0x9bc], ecx
lea r8, [r8 + 4]
sub r9, 1
jne 0x140004430
mov eax, dword [rbp + 0xb0]
mov ecx, dword [rbp + rax*4 + 0xb4]
mov eax, ecx
shr eax, 0xb
and eax, dword [rbp + 0x1434]
xor ecx, eax
mov eax, ecx
and eax, 0xff3a58ad
shl eax, 7
xor ecx, eax
mov eax, ecx
and eax, 0xffffdf8c
shl eax, 0xf
xor ecx, eax
mov eax, ecx
shr eax, 0x12
xor eax, ecx
mov dword [rsp + 0x44], eax
movsxd rdx, esi
xor r8d, r8d
lea rcx, [rbp - 0x60]
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__::seekp_long_long___int64___int____ptr64]
mov r8d, 4
lea rdx, [rsp + 0x44]
lea rcx, [rbp - 0x60]
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__::write_char_const____ptr64__long_long___int64_____ptr64]
lea rcx, [rbp - 0x58]
call fcn.14000e680
test rax, rax
jne 0x1400044f6
mov rax, qword [rbp - 0x70]
movsxd rcx, dword [rax + 4]
lea rax, [rbp - 0x70]
xor r8d, r8d
lea edx, [r8 + 2]
add rcx, rax
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 [rbp - 0x70]
movsxd rcx, dword [rax + 4]
mov qword [rbp + rcx - 0x70], r14
mov rax, qword [rbp - 0x70]
movsxd rcx, dword [rax + 4]
lea edx, [rcx - 0xb8]
mov dword [rbp + rcx - 0x74], edx
lea rcx, [rbp - 0x58]
call fcn.14000dd40
lea rcx, [rbp - 0x50]
call qword [sym.imp.MSVCP140.dll_public_virtual:_void___cdecl_std::basic_iostream_char__struct_std::char_traits_char__::destructor_void____ptr64]
lea rcx, [rbp + 0x48]
call qword [sym.imp.MSVCP140.dll_public_virtual:_void___cdecl_std::basic_ios_char__struct_std::char_traits_char__::destructor_void____ptr64]
nop
mov rdx, qword [rbp - 0x80]
cmp rdx, 0x10
jb 0x140004572
inc rdx
mov rcx, qword [rsp + 0x68]
mov rax, rcx
cmp rdx, 0x1000
jb 0x14000456d
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x14000456d
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
call fcn.14006c500
vmovdqu xmm0, xmmword [0x1400cd480]
vmovdqu xmmword [rsp + 0x78], xmm0
mov byte [rsp + 0x68], 0
mov rdx, qword [rsp + 0x60]
cmp rdx, 0x10
jb 0x1400045c5
inc rdx
mov rcx, qword [rsp + 0x48]
mov rax, rcx
cmp rdx, 0x1000
jb 0x1400045c0
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x1400045c0
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
call fcn.14006c500
mov rcx, qword [rbp + 0x1550]
xor rcx, rsp
call fcn.14006c170
lea r11, [rsp + 0x1660]
mov rbx, qword [r11 + 0x10]
mov rsi, qword [r11 + 0x18]
mov rdi, qword [r11 + 0x20]
mov r14, qword [r11 + 0x28]
mov rsp, r11
pop rbp
ret