Function at 0x140030840
Capabilities:
Encode data using xor
Generate random numbers using a mersenne twister

Disassembly:
mov qword [rsp + 0x10], rbx
mov qword [rsp + 0x18], rbp
push rsi
push rdi
push r14
sub rsp, 0xa10
mov rdi, rcx
mov qword [rsp + 0x40], rcx
xor ebp, ebp
mov dword [rsp + 0x28], ebp
mov esi, 4
mov rax, qword gs:[0x58]
add rsi, qword [rax]
mov eax, dword [rsi]
cmp dword [0x14017a354], eax
jle 0x14003094f
lea rcx, [0x14017a354]
call fcn.1400c5010
cmp dword [0x14017a354], 0xffffffff
jne 0x14003094f
xorps xmm0, xmm0
xor eax, eax
movups xmmword [0x14017b738], xmm0
mov qword [0x14017b748], rax
call fcn.1400c4258
mov dword [rsp + 0x30], eax
call fcn.1400c4258
mov dword [rsp + 0x34], eax
call fcn.1400c4258
mov dword [rsp + 0x38], eax
call fcn.1400c4258
mov dword [rsp + 0x3c], eax
xorps xmm0, xmm0
movdqu xmmword [0x14017b738], xmm0
mov ecx, ebp
mov qword [0x14017b748], rcx
lea rbx, [rsp + 0x30]
nop dword [rax + rax]
mov eax, dword [rbx]
mov dword [rsp + 0x24], eax
mov rdx, qword [0x14017b740]
cmp rdx, rcx
je 0x14003090e
mov dword [rdx], eax
add qword [0x14017b740], 4
jmp 0x14003091f
lea r8, [rsp + 0x24]
lea rcx, [0x14017b738]
call fcn.140057be0
add rbx, 4
lea rax, [rsp + 0x40]
cmp rbx, rax
je 0x140030936
mov rcx, qword [0x14017b748]
jmp 0x1400308f0
lea rcx, [0x140106390]
call fcn.1400c52b0
nop
lea rcx, [0x14017a354]
call fcn.1400c4fa4
lea r14, [0x140000000]
mov eax, dword [rsi]
cmp dword [0x14017b7b0], eax
jle 0x140030a3c
lea rcx, [0x14017b7b0]
call fcn.1400c5010
cmp dword [0x14017b7b0], 0xffffffff
jne 0x140030a3c
mov dword [0x14017b734], 0xffffffff
mov edx, 0x1571
mov dword [0x14017a3b4], edx
mov ecx, 1
nop word [rax + rax]
mov eax, edx
shr eax, 0x1e
xor eax, edx
imul edx, eax, 0x6c078965
add edx, ecx
mov dword [r14 + rcx*4 + 0x17a3b4], edx
inc rcx
cmp rcx, 0x270
jb 0x1400309a0
mov dword [0x14017a3b0], 0x270
lea r8, [rsp + 0xa10]
lea rdx, [rsp + 0x50]
call fcn.1400528a0
mov edx, ebp
mov r8, rbp
nop dword [rax]
nop dword [rax + rax]
mov ecx, dword [rsp + r8*4 + 0x50]
mov dword [r14 + r8*4 + 0x17a3b4], ecx
mov eax, ecx
or eax, edx
mov edx, ecx
shr edx, 0x1f
test r8, r8
cmovne edx, eax
inc r8
cmp r8, 0x270
jb 0x1400309f0
test edx, edx
jne 0x140030a26
mov dword [0x14017a3b4], 0x80000000
mov dword [0x14017a3b0], 0x270
lea rcx, [0x14017b7b0]
call fcn.1400c4fa4
xorps xmm0, xmm0
movups xmmword [rdi], xmm0
mov qword [rdi + 0x10], rbp
mov qword [rdi + 0x18], reloc.WS2_32.dll_ntohs
mov byte [rdi], 0
mov dword [rsp + 0x28], 1
mov esi, reloc.WS2_32.dll_recv
movabs rbp, 0x842108421084211
movzx ebx, byte [rsp + 0x20]
nop dword [rax]
call fcn.140041290
mov ecx, eax
mov rax, rbp
mul rcx
mov eax, ecx
sub rax, rdx
shr rax, 1
add rax, rdx
shr rax, 5
imul rax, rax, 0x3e
sub rcx, rax
movzx r9d, byte [rcx + r14 + 0x14d368]
mov rcx, qword [rdi + 0x10]
mov rdx, qword [rdi + 0x18]
cmp rcx, rdx
jae 0x140030ac8
lea rax, [rcx + 1]
mov qword [rdi + 0x10], rax
mov rax, rdi
cmp rdx, 0xf
jbe 0x140030abd
mov rax, qword [rdi]
mov byte [rax + rcx], r9b
mov byte [rax + rcx + 1], 0
jmp 0x140030ad9
movzx r8d, bl
mov edx, 1
mov rcx, rdi
call fcn.140008b00
sub rsi, 1
jne 0x140030a70
mov rax, rdi
lea r11, [rsp + 0xa10]
mov rbx, qword [r11 + 0x28]
mov rbp, qword [r11 + 0x30]
mov rsp, r11
pop r14
pop rdi
pop rsi
ret