Function at 0x1801b1fd0
Capabilities:
Encode data using xor

Disassembly:
push rbx
push rsi
push r12
push r15
mov eax, 0x58
call fcn.180227e80
sub rsp, rax
mov rax, qword [rcx + 0x180]
mov rbx, rcx
mov rcx, qword [rcx + 0x38]
mov rsi, r9
mov qword [rsp + 0x38], rax
add rcx, r9
movabs rax, 0xfffffffe0
mov r12, r8
mov r15, rdx
cmp rcx, rax
ja 0x1801b230e
cmp rcx, r9
jb 0x1801b230e
mov qword [rsp + 0x88], rbp
mov ebp, dword [rbx + 0x170]
mov qword [rsp + 0x50], rdi
xor edi, edi
mov qword [rbx + 0x38], rcx
mov dword [rsp + 0x80], ebp
cmp dword [rbx + 0x174], edi
je 0x1801b208e
lea rcx, [rbx + 0x40]
test r9, r9
jne 0x1801b2066
lea rdx, [rbx + 0x60]
call fcn.1801b31b0
xor eax, eax
mov dword [rbx + 0x174], edi
jmp 0x1801b22f6
movups xmm0, xmmword [rcx]
lea rdx, [rbx + 0x188]
mov ebp, reloc.WS2_32.dll_recv
mov dword [rsp + 0x80], ebp
movups xmmword [rdx], xmm0
mov qword [rcx], rdi
mov qword [rbx + 0x48], rdi
mov dword [rbx + 0x174], edi
jmp 0x1801b2095
lea rdx, [rbx + 0x188]
movzx eax, byte [rbx + 0xd]
mov qword [rsp + 0x48], r13
movzx r13d, byte [rbx + 0xc]
shl r13d, 8
or r13d, eax
mov qword [rsp + 0x40], r14
movzx eax, byte [rbx + 0xe]
mov r14d, ebp
shl r13d, 8
or r13d, eax
movzx eax, byte [rbx + 0xf]
shl r13d, 8
or r13d, eax
and r14d, 0xf
mov dword [rsp + 0x30], r14d
je 0x1801b2135
test rsi, rsi
je 0x1801b2110
movzx ecx, byte [r15]
dec rsi
mov eax, ebp
inc r15
inc ebp
mov byte [rax + rbx + 0x188], cl
xor cl, byte [r14 + rbx + 0x10]
mov byte [r12], cl
inc r12
inc r14d
and r14d, 0xf
mov dword [rsp + 0x30], r14d
jne 0x1801b20d3
lea rdx, [rbx + 0x188]
jmp 0x1801b2119
test r14d, r14d
jne 0x1801b22e4
mov r8, rdx
mov r9d, ebp
lea rdx, [rbx + 0x60]
lea rcx, [rbx + 0x40]
call fcn.1801b2ff0
mov ebp, edi
mov dword [rsp + 0x80], edi
lea rax, [rbx + 0x60]
cmp rsi, 0x10
jb 0x1801b2162
test ebp, ebp
je 0x1801b2162
mov r9d, ebp
lea r8, [rbx + 0x188]
mov rdx, rax
lea rcx, [rbx + 0x40]
call fcn.1801b2ff0
mov ebp, edi
mov dword [rsp + 0x80], edi
cmp rsi, 0xc00
jb 0x1801b2209
mov rbp, qword [rsp + 0x38]
movabs rax, 0xaaaaaaaaaaaaaaab
mul rsi
mov rdi, rdx
shr rdi, 0xb
imul rax, rdi, 0xfffffffffffff400
add rsi, rax
mov r9d, 0xc00
lea rdx, [rbx + 0x60]
mov r8, r15
lea rcx, [rbx + 0x40]
call fcn.1801b2ff0
mov r9, rbp
mov qword [rsp + 0x20], rbx
mov r8d, 0xc0
mov rdx, r12
mov rcx, r15
call qword [rsp + 0xa0]
add r13d, 0xc0
add r12, 0xc00
mov eax, r13d
mov byte [rbx + 0xf], r13b
shr eax, 0x18
add r15, 0xc00
mov byte [rbx + 0xc], al
mov eax, r13d
shr eax, 0x10
mov byte [rbx + 0xd], al
mov eax, r13d
shr eax, 8
mov byte [rbx + 0xe], al
sub rdi, 1
jne 0x1801b2192
mov ebp, dword [rsp + 0x80]
mov r14d, dword [rsp + 0x30]
mov rax, rsi
and rax, 0xfffffffffffffff0
mov qword [rsp + 0x98], rax
je 0x1801b2281
mov rdi, rax
lea rdx, [rbx + 0x60]
mov r9, rax
shr rdi, 4
mov r8, r15
lea rcx, [rbx + 0x40]
call fcn.1801b2ff0
mov r9, qword [rsp + 0x38]
mov r8, rdi
mov rdx, r12
mov qword [rsp + 0x20], rbx
mov rcx, r15
call qword [rsp + 0xa0]
add r13d, edi
mov eax, r13d
mov byte [rbx + 0xf], r13b
shr eax, 0x18
mov byte [rbx + 0xc], al
mov eax, r13d
shr eax, 0x10
mov byte [rbx + 0xd], al
mov eax, r13d
shr eax, 8
mov byte [rbx + 0xe], al
mov rax, qword [rsp + 0x98]
add r12, rax
add r15, rax
sub rsi, rax
test rsi, rsi
je 0x1801b22e4
mov r8, qword [rsp + 0x38]
lea rdx, [rbx + 0x10]
mov rcx, rbx
call qword [rbx + 0x178]
inc r13d
mov eax, r13d
mov byte [rbx + 0xf], r13b
shr eax, 0x18
mov byte [rbx + 0xc], al
mov eax, r13d
shr eax, 0x10
mov byte [rbx + 0xd], al
mov eax, r13d
shr eax, 8
mov byte [rbx + 0xe], al
nop word [rax + rax]
mov edx, r14d
inc r14d
mov eax, ebp
inc ebp
movzx ecx, byte [rdx + r15]
mov byte [rax + rbx + 0x188], cl
xor cl, byte [rdx + rbx + 0x10]
mov byte [rdx + r12], cl
sub rsi, 1
jne 0x1801b22c0
mov r13, qword [rsp + 0x48]
xor eax, eax
mov r14, qword [rsp + 0x40]
mov dword [rbx + 0x170], ebp
mov rbp, qword [rsp + 0x88]
mov rdi, qword [rsp + 0x50]
add rsp, 0x58
pop r15
pop r12
pop rsi
pop rbx
ret
mov eax, 0xffffffff
add rsp, 0x58
pop r15
pop r12
pop rsi
pop rbx
ret