Function at 0x140063790
Capabilities:
Encode data using xor
Generate random numbers using a mersenne twister

Disassembly:
mov qword [rsp + 0x10], rbx
mov qword [rsp + 0x18], rsi
mov qword [rsp + 0x20], rdi
push rbp
push r12
push r13
push r14
push r15
lea rbp, [rsp - 0x1330]
mov eax, 0x1430
call fcn.1400d0bd0
sub rsp, rax
mov rax, qword [0x14016d080]
xor rax, rsp
mov qword [rbp + 0x1320], rax
mov r12, rdx
mov rdi, rcx
mov qword [rsp + 0x68], rcx
xor esi, esi
mov dword [rsp + 0x60], esi
movdqa xmm0, xmmword [0x14015ae40]
movdqa xmmword [rsp + 0x20], xmm0
movdqa xmm1, xmmword [0x14015ad70]
movdqa xmmword [rsp + 0x30], xmm1
movdqa xmm0, xmmword [0x14015ace0]
movdqa xmmword [rsp + 0x40], xmm0
movdqa xmm1, xmmword [str.___ABCDEFGHIJ]
movdqa xmmword [rsp + 0x50], xmm1
mov ecx, esi
nop dword [rax]
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x21], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x22], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x23], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x24], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x25], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x26], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x27], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x28], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x29], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x2a], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x2b], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x2c], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x2d], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x2e], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x2f], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x30], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x31], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x32], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x33], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x34], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x35], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x36], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x37], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x38], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x39], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x3a], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x3b], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x3c], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x3d], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x3e], al
movzx eax, byte [rsp + 0x20]
xor byte [rsp + rcx + 0x3f], al
add rcx, 0x1f
cmp rcx, 0x3e
jb 0x140063820
mov byte [rsp + 0x5f], sil
xorps xmm0, xmm0
movups xmmword [rsp + 0x70], xmm0
mov qword [rbp - 0x80], rsi
mov qword [rbp - 0x78], rsi
lea rax, [rsp + 0x21]
mov r8, 0xffffffffffffffff
inc r8
cmp byte [rax + r8], sil
jne 0x140063966
lea rdx, [rsp + 0x21]
lea rcx, [rsp + 0x70]
call fcn.1400031c0
nop
xorps xmm0, xmm0
movups xmmword [rdi], xmm0
mov qword [rdi + 0x10], rsi
mov qword [rdi + 0x18], reloc.WS2_32.dll_ntohs
mov byte [rdi], 0
mov ebx, 1
mov dword [rsp + 0x60], ebx
call qword [sym.imp.MSVCP140.dll_unsigned_int___cdecl_std::_Random_device_void_]
mov ecx, eax
mov dword [rbp + 0x1314], 0xffffffff
mov dword [rbp - 0x6c], eax
nop dword [rax]
nop word [rax + rax]
mov eax, ecx
shr eax, 0x1e
xor eax, ecx
imul ecx, eax, 0x6c078965
add ecx, ebx
mov dword [rbp + rbx*4 - 0x6c], ecx
inc rbx
cmp rbx, 0x270
jb 0x1400639c0
mov ebx, 0x270
mov dword [rbp - 0x70], ebx
mov r14d, dword [rbp - 0x80]
dec r14d
mov r13, qword [rbp - 0x78]
mov r15, qword [rsp + 0x70]
test r12, r12
je 0x140063c25
cmp r14d, 0xffffffff
jne 0x140063b8f
cmp ebx, 0x270
jne 0x140063a61
lea r8, [rbp - 0x68]
mov r9d, ebx
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 0x140063a20
mov ebx, dword [rbp - 0x70]
jmp 0x140063b56
cmp ebx, 0x4e0
jb 0x140063b56
mov r8, rsi
lea r9, [rbp + 0x954]
lea r10, [rbp + 0xf88]
lea r11, [rbp - 0x6c]
nop dword [rax]
nop word [rax + rax]
mov edx, dword [r9 + r8*4]
xor edx, dword [rbp + r8*4 + 0x958]
btr edx, 0x1f
xor edx, dword [r9 + r8*4]
mov eax, edx
and al, 1
neg al
sbb ecx, ecx
and ecx, 0x9908b0df
xor ecx, dword [r10 + r8*4]
shr edx, 1
xor ecx, edx
mov dword [r11 + r8*4], ecx
inc r8
cmp r8, 0xe3
jb 0x140063a90
mov r8d, 0xe3
lea r9, [rbp + 0x958]
lea r10, [rbp - 0x6c]
nop dword [rax + rax]
mov eax, dword [rbp + r8*4 + 0x954]
mov edx, eax
xor edx, dword [r9 + r8*4]
btr edx, 0x1f
xor edx, eax
mov eax, edx
and al, 1
neg al
sbb ecx, ecx
and ecx, 0x9908b0df
xor ecx, dword [rbp + r8*4 - 0x3f8]
shr edx, 1
xor ecx, edx
mov dword [r10 + r8*4], ecx
inc r8
cmp r8, 0x26f
jb 0x140063ae0
mov edx, dword [rbp + 0x1310]
and edx, 0x80000000
mov eax, dword [rbp - 0x6c]
btr eax, 0x1f
or edx, eax
mov eax, edx
and al, 1
neg al
sbb ecx, ecx
and ecx, 0x9908b0df
shr edx, 1
xor ecx, edx
xor ecx, dword [rbp + 0x5c4]
mov dword [rbp + 0x950], ecx
mov ebx, esi
mov dword [rbp - 0x70], ebx
mov eax, ebx
mov edx, dword [rbp + rax*4 - 0x6c]
inc ebx
mov dword [rbp - 0x70], ebx
mov eax, edx
shr eax, 0xb
and eax, dword [rbp + 0x1314]
xor edx, eax
mov eax, edx
and eax, 0xff3a58ad
shl eax, 7
xor edx, eax
mov eax, edx
and eax, 0xffffdf8c
shl eax, 0xf
xor edx, eax
mov ecx, edx
shr ecx, 0x12
xor ecx, edx
jmp 0x140063bd2
lea ebx, [r14 + 1]
lea rcx, [rbp - 0x70]
call fcn.140074290
mov esi, ebx
mov ecx, eax
imul rcx, rsi
cmp ecx, ebx
jae 0x140063bc9
mov eax, ebx
neg eax
xor edx, edx
div ebx
mov ebx, edx
cmp ecx, edx
jae 0x140063bc9
lea rcx, [rbp - 0x70]
call fcn.140074290
mov ecx, eax
imul rcx, rsi
cmp ecx, ebx
jb 0x140063bb6
shr rcx, 0x20
mov ebx, dword [rbp - 0x70]
xor esi, esi
lea rdx, [rsp + 0x70]
cmp r13, 0xf
cmova rdx, r15
movsxd rax, ecx
movzx r9d, byte [rax + rdx]
mov rcx, qword [rdi + 0x10]
mov rdx, qword [rdi + 0x18]
cmp rcx, rdx
jae 0x140063c13
lea rax, [rcx + 1]
mov qword [rdi + 0x10], rax
mov rax, rdi
cmp rdx, 0xf
jbe 0x140063c08
mov rax, qword [rdi]
mov byte [rax + rcx], r9b
mov byte [rax + rcx + 1], 0
jmp 0x140063c1b
mov rcx, rdi
call fcn.14006bd30
sub r12, 1
jne 0x140063a00
cmp r13, 0xf
jbe 0x140063c5f
lea rdx, [r13 + 1]
mov rax, r15
cmp rdx, 0x1000
jb 0x140063c57
add rdx, 0x27
mov r15, qword [r15 - 8]
sub rax, r15
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x140063c57
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
mov rcx, r15
call fcn.1400d03f0
mov rax, rdi
mov rcx, qword [rbp + 0x1320]
xor rcx, rsp
call fcn.1400d00f0
lea r11, [rsp + 0x1430]
mov rbx, qword [r11 + 0x38]
mov rsi, qword [r11 + 0x40]
mov rdi, qword [r11 + 0x48]
mov rsp, r11
pop r15
pop r14
pop r13
pop r12
pop rbp
ret