Function at 0x1800064d0
Capabilities:
Encode data using base64

Disassembly:
mov qword [rsp + 0x18], rbx
mov qword [rsp + 0x20], rsi
push rdi
sub rsp, 0x40
mov rax, qword [0x180309080]
xor rax, rsp
mov qword [rsp + 0x30], rax
mov rbx, rdx
mov rdi, rcx
mov qword [rsp + 0x28], rcx
mov qword [rsp + 0x28], rdx
mov rsi, qword [rdx + 0x10]
lea rcx, [rsi + 2]
movabs rax, 0xaaaaaaaaaaaaaaab
mul rcx
shr rdx, 1
shl rdx, 2
xor r8d, r8d
mov rcx, rdi
call fcn.18000dbe0
mov r8, rdi
cmp qword [rdi + 0x18], 0xf
jbe 0x180006532
mov r8, qword [rdi]
xor edx, edx
lea r10, [rsi - 2]
lea r11, str.ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_00010203040506070809101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899
test r10, r10
je 0x18000660e
nop dword [rax + rax]
mov rax, rbx
cmp qword [rbx + 0x18], 0xf
jbe 0x18000655d
mov rax, qword [rbx]
movzx eax, byte [rax + rdx]
shr rax, 2
movzx eax, byte [rax + r11]
mov byte [r8], al
cmp qword [rbx + 0x18], 0xf
jbe 0x18000657d
mov rax, qword [rbx]
lea r9, [rdx + rax]
jmp 0x180006584
lea r9, [rbx + rdx]
mov rax, rbx
movzx ecx, byte [rax + rdx + 1]
shr rcx, 4
movsx rax, byte [r9]
and eax, 3
shl rax, 4
or rcx, rax
movzx eax, byte [rcx + r11]
mov byte [r8 + 1], al
cmp qword [rbx + 0x18], 0xf
jbe 0x1800065b4
mov rax, qword [rbx]
lea r9, [rax + 1]
jmp 0x1800065bb
lea r9, [rbx + 1]
mov rax, rbx
add r9, rdx
movzx ecx, byte [rax + rdx + 2]
shr rcx, 6
movsx rax, byte [r9]
and eax, 0xf
shl rax, 2
or rcx, rax
movzx eax, byte [rcx + r11]
mov byte [r8 + 2], al
mov rax, rbx
cmp qword [rbx + 0x18], 0xf
jbe 0x1800065eb
mov rax, qword [rbx]
movsx rax, byte [rax + rdx + 2]
and eax, 0x3f
movzx eax, byte [rax + r11]
mov byte [r8 + 3], al
add r8, 4
add rdx, 3
cmp rdx, r10
jb 0x180006550
cmp rdx, rsi
jae 0x1800066c4
mov rax, rbx
cmp qword [rbx + 0x18], 0xf
jbe 0x180006624
mov rax, qword [rbx]
movzx eax, byte [rax + rdx]
shr rax, 2
movzx eax, byte [rax + r11]
mov byte [r8], al
lea rax, [rsi - 1]
cmp rdx, rax
jne 0x180006666
mov rax, rbx
cmp qword [rbx + 0x18], 0xf
jbe 0x18000664a
mov rax, qword [rbx]
movsx rax, byte [rax + rdx]
and eax, 3
add rax, rax
movzx eax, byte [r11 + rax*8]
mov byte [r8 + 1], al
mov al, 0x3d
add r8, 2
jmp 0x1800066bc
cmp qword [rbx + 0x18], 0xf
jbe 0x180006676
mov rax, qword [rbx]
lea r9, [rdx + rax]
jmp 0x18000667d
lea r9, [rdx + rbx]
mov rax, rbx
movzx ecx, byte [rax + rdx + 1]
shr rcx, 4
movsx rax, byte [r9]
and eax, 3
shl rax, 4
or rcx, rax
movzx eax, byte [rcx + r11]
mov byte [r8 + 1], al
add r8, 2
mov rax, rbx
cmp qword [rbx + 0x18], 0xf
jbe 0x1800066ae
mov rax, qword [rbx]
movsx rax, byte [rax + rdx + 1]
and eax, 0xf
movzx eax, byte [r11 + rax*4]
mov byte [r8], al
mov byte [r8 + 1], 0x3d
mov rdx, qword [rbx + 0x18]
cmp rdx, 0xf
jbe 0x1800066fa
inc rdx
mov rcx, qword [rbx]
cmp rdx, 0x1000
jb 0x1800066f5
add rdx, 0x27
mov r8, qword [rcx - 8]
sub rcx, r8
lea rax, [rcx - 8]
cmp rax, 0x1f
ja 0x18000672d
mov rcx, r8
call fcn.1800e8064
mov qword [rbx + 0x10], 0
mov qword [rbx + 0x18], reloc.WS2_32.dll_ntohs
mov byte [rbx], 0
mov rax, rdi
mov rcx, qword [rsp + 0x30]
xor rcx, rsp
call fcn.1800e7c90
mov rbx, qword [rsp + 0x60]
mov rsi, qword [rsp + 0x68]
add rsp, 0x40
pop rdi
ret
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3