Function at 0x490c40
Capabilities:
Encode data using base64

Disassembly:
lea r12, [rsp - 0x48]
cmp r12, qword [r14 + 0x10]
jbe 0x4913ae
push rbp
mov rbp, rsp
sub rsp, 0xc0
mov qword [rsp + 0xd0], rax
mov rdx, qword [r11]
add rdx, 0xffffffffffffffc4
neg rdx
mov r11, rcx
mov rcx, rdx
mov r12, r9
shl r9, cl
test r12, r12
mov r12d, 0
cmove r10, r12
cmp rcx, 0x40
sbb rdx, rdx
and r9, rdx
jmp 0x490c97
shl r9, 1
dec r10
test r9, r9
je 0x490ca3
bt r9, 0x3c
jae 0x490c91
cmp rdi, 0xf
jae 0x490d1d
mov rcx, rdi
shl rcx, 2
mov rdx, r9
shl r9, cl
lea r12, [rcx - 0x3c]
neg r12
mov r13, rcx
mov rcx, r12
shr rdx, cl
cmp r13, 0x40
sbb r13, r13
and r9, r13
movabs r13, 0xfffffffffffffff
and r13, r9
cmp rcx, 0x40
sbb r9, r9
and rdx, r9
mov r15, rdx
and edx, 1
or r13, rdx
movabs rdx, 0x800000000000000
cmp rdx, r13
jae 0x490d05
lea rdx, [r15 + 1]
jmp 0x490d08
mov rdx, r15
shl rdx, cl
and rdx, r9
bt rdx, 0x3d
jae 0x490d20
shr rdx, 1
inc r10
jmp 0x490d20
mov rdx, r9
nop
movabs r9, 0x9ac06089b61d6f5
mov qword [rsp + 0x88], r9
movabs r9, 0xee474780e7d61139
mov qword [rsp + 0x90], r9
movabs r9, 0x3e9a333ca853e7c5
mov qword [rsp + 0x78], r9
movabs r9, 0x882223e385b72801
mov qword [rsp + 0x80], r9
xor ecx, ecx
jmp 0x490d84
movzx r9d, byte [rsp + rcx + 0x88]
movzx r12d, byte [rsp + rcx + 0x78]
xor r12d, r9d
mov byte [rsp + rcx + 0x78], r12b
inc rcx
cmp rcx, 0x10
jl 0x490d6a
mov qword [rsp + 0xe8], rdi
mov byte [rsp + 0xf1], r8b
mov qword [rsp + 0xd8], rbx
mov qword [rsp + 0x70], r10
mov qword [rsp + 0x68], r11
mov byte [rsp + 0xf0], sil
mov qword [rsp + 0x60], rdx
mov qword [rsp + 0xd0], rax
lea rax, [rsp + 0x98]
lea rbx, [rsp + 0x78]
mov ecx, 0x10
call fcn.0044c140
movzx edx, byte [rsp + 0xf0]
cmp dl, 0x58
jne 0x490df2
call fcn.00495b40
movzx edx, byte [rsp + 0xf0]
mov qword [rsp + 0x50], rbx
mov qword [rsp + 0xb8], rax
movzx r8d, byte [rsp + 0xf1]
test r8b, r8b
je 0x490e6e
mov r8, qword [rsp + 0xd8]
inc r8
mov rcx, qword [rsp + 0x68]
nop dword [rax]
cmp rcx, r8
jb 0x490e2f
mov rsi, qword [rsp + 0xd0]
jmp 0x490e66
mov rax, qword [rsp + 0xd0]
mov rbx, r8
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
movzx edx, byte [rsp + 0xf0]
mov r8, rbx
mov rsi, rax
mov rax, qword [rsp + 0xb8]
mov rbx, qword [rsp + 0x50]
mov byte [r8 + rsi - 1], 0x2d
jmp 0x490e83
mov rcx, qword [rsp + 0x68]
mov r8, qword [rsp + 0xd8]
mov rsi, qword [rsp + 0xd0]
add r8, 3
cmp rcx, r8
jae 0x490ec0
mov rax, rsi
mov rbx, r8
mov edi, 3
lea rsi, [0x005d7960]
nop
call fcn.00448080
movzx edx, byte [rsp + 0xf0]
mov rsi, rax
mov r8, rbx
mov rax, qword [rsp + 0xb8]
mov rbx, qword [rsp + 0x50]
mov byte [r8 + rsi - 3], 0x30
mov byte [r8 + rsi - 2], dl
mov r9, qword [rsp + 0x60]
mov r10, r9
shr r9, 0x3c
and r9d, 1
add r9d, 0x30
mov byte [r8 + rsi - 1], r9b
shl r10, 4
mov qword [rsp + 0x60], r10
mov r9, qword [rsp + 0xe8]
test r9, r9
jge 0x490f4c
test r10, r10
je 0x490f49
inc r8
cmp rcx, r8
jae 0x490f3e
mov rax, rsi
mov rbx, r8
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
movzx edx, byte [rsp + 0xf0]
mov r10, qword [rsp + 0x60]
mov r8, rbx
mov rsi, rax
mov rax, qword [rsp + 0xb8]
mov rbx, qword [rsp + 0x50]
mov byte [r8 + rsi - 1], 0x2e
jmp 0x491331
test r9, r9
jle 0x490fa5
inc r8
cmp rcx, r8
jae 0x490f95
mov rax, rsi
mov rbx, r8
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
movzx edx, byte [rsp + 0xf0]
mov r9, qword [rsp + 0xe8]
mov r10, qword [rsp + 0x60]
mov r8, rbx
mov rsi, rax
mov rax, qword [rsp + 0xb8]
mov rbx, qword [rsp + 0x50]
mov byte [r8 + rsi - 1], 0x2e
xor edi, edi
nop dword [rax]
jmp 0x491293
mov r9d, edx
or edx, 0x20
nop
cmp r9b, dl
jne 0x490fb8
mov eax, 0x70
jmp 0x490fbd
mov eax, 0x50
lea rbx, [r8 + 1]
cmp rcx, rbx
jae 0x490fe6
mov byte [rsp + 0x45], al
mov rax, rsi
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
mov rsi, rax
movzx eax, byte [rsp + 0x45]
mov byte [rbx + rsi - 1], al
mov rdx, qword [rsp + 0x70]
test rdx, rdx
jge 0x490ffe
neg rdx
mov eax, 0x2d
jmp 0x491003
mov eax, 0x2b
inc rbx
cmp rcx, rbx
jae 0x491035
mov qword [rsp + 0x70], rdx
mov byte [rsp + 0x45], al
mov rax, rsi
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
mov rdx, qword [rsp + 0x70]
mov rsi, rax
movzx eax, byte [rsp + 0x45]
mov byte [rbx + rsi - 1], al
cmp rdx, 0x64
jge 0x4910b2
add rbx, 2
movabs rax, 0xcccccccccccccccd
mov rdi, rdx
imul rdx
add rdx, rdi
sar rdx, 3
mov r8, rdi
sar rdi, 0x3f
sub rdx, rdi
lea r9, [rdx + rdx*4]
shl r9, 1
sub r8, r9
cmp rcx, rbx
jae 0x49109e
mov qword [rsp + 0x70], rdx
mov qword [rsp + 0x68], r8
mov rax, rsi
mov edi, 2
lea rsi, [0x005d7960]
call fcn.00448080
mov rdx, qword [rsp + 0x70]
mov r8, qword [rsp + 0x68]
mov rsi, rax
add edx, 0x30
mov byte [rbx + rsi - 2], dl
lea edx, [r8 + 0x30]
mov byte [rbx + rsi - 1], dl
jmp 0x491278
cmp rdx, 0x3e8
jge 0x49117c
add rbx, 3
movabs rax, 0xa3d70a3d70a3d70b
mov rdi, rdx
imul rdx
movabs rax, 0xcccccccccccccccd
mov r8, rdx
imul rdi
add rdx, rdi
mov r9, rdx
sar rdx, 0x3f
sar r9, 3
movabs rax, 0xcccccccccccccccd
mov r10, rdx
imul r9
add rdx, r9
sar rdx, 3
sub rdx, r10
lea rdx, [rdx + rdx*4]
shl rdx, 1
lea r10, [r9 + r9*4]
shl r10, 1
add r8, rdi
sub r9, rdx
sub rdi, r10
cmp rcx, rbx
jae 0x49115c
mov qword [rsp + 0x70], r8
mov qword [rsp + 0x68], r9
mov qword [rsp + 0x58], rdi
mov rax, rsi
mov edi, 3
lea rsi, [0x005d7960]
call fcn.00448080
mov rdi, qword [rsp + 0x58]
mov r8, qword [rsp + 0x70]
mov r9, qword [rsp + 0x68]
mov rsi, rax
sar r8, 6
lea edx, [r8 + 0x30]
mov byte [rbx + rsi - 3], dl
lea edx, [r9 + 0x30]
mov byte [rbx + rsi - 2], dl
lea edx, [rdi + 0x30]
mov byte [rbx + rsi - 1], dl
jmp 0x491278
add rbx, 4
movabs rax, 0xa3d70a3d70a3d70b
mov rdi, rdx
imul rdx
add rdx, rdi
sar rdx, 6
movzx r8d, dl
imul r8d, r8d, 0x19a
shr r8d, 0xc
lea r8d, [r8 + r8*4]
shl r8d, 1
movabs rax, 0xcccccccccccccccd
mov r9, rdx
imul rdi
add rdx, rdi
mov r10, rdx
sar rdx, 3
lea r11, [rdx + rdx*4]
shl r11, 1
movabs rax, 0xcccccccccccccccd
mov r12, rdx
imul rdx
add rdx, r12
sar rdx, 3
sar r10, 0x3f
sub rdx, r10
lea rdx, [rdx + rdx*4]
shl rdx, 1
mov r10, rdi
sub rdi, r11
movabs rax, 0x4189374bc6a7ef9e
mov r11, rdx
imul r10
sub r9d, r8d
sub r12, r11
cmp rcx, rbx
jae 0x491254
mov byte [rsp + 0x47], r9b
mov qword [rsp + 0x70], rdi
mov qword [rsp + 0x68], rdx
mov qword [rsp + 0x58], r12
mov rax, rsi
mov edi, 4
lea rsi, [0x005d7960]
call fcn.00448080
mov rdx, qword [rsp + 0x68]
mov rdi, qword [rsp + 0x70]
movzx r9d, byte [rsp + 0x47]
mov r12, qword [rsp + 0x58]
mov rsi, rax
add edi, 0x30
sar rdx, 8
add edx, 0x30
mov byte [rbx + rsi - 4], dl
lea edx, [r9 + 0x30]
mov byte [rbx + rsi - 3], dl
lea edx, [r12 + 0x30]
mov byte [rbx + rsi - 2], dl
mov byte [rbx + rsi - 1], dil
mov rax, rsi
add rsp, 0xc0
pop rbp
ret
mov byte [r8 + rsi - 1], r10b
inc rdi
shl r11, 4
mov r10, r11
cmp r9, rdi
jle 0x490fa5
mov r11, r10
shr r10, 0x3c
and r10d, 0xf
cmp rbx, r10
jbe 0x491317
inc r8
movzx r10d, byte [rax + r10]
cmp rcx, r8
jae 0x491284
mov qword [rsp + 0x48], rdi
mov byte [rsp + 0x46], r10b
mov qword [rsp + 0x60], r11
mov rax, rsi
mov rbx, r8
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
movzx edx, byte [rsp + 0xf0]
mov rdi, qword [rsp + 0x48]
mov r9, qword [rsp + 0xe8]
movzx r10d, byte [rsp + 0x46]
mov r11, qword [rsp + 0x60]
mov r8, rbx
mov rsi, rax
mov rax, qword [rsp + 0xb8]
mov rbx, qword [rsp + 0x50]
jmp 0x491284
mov rax, r10
mov rcx, rbx
nop dword [rax]
call fcn.00461b60
mov byte [r8 + rsi - 1], r10b
shl r9, 4
mov r10, r9
test r10, r10
je 0x490fa5
mov r9, r10
shr r10, 0x3c
and r10d, 0xf
cmp rbx, r10
jbe 0x4913a2
inc r8
movzx r10d, byte [rax + r10]
cmp rcx, r8
jae 0x491325
mov qword [rsp + 0x60], r9
mov byte [rsp + 0x46], r10b
mov rax, rsi
mov rbx, r8
mov edi, 1
lea rsi, [0x005d7960]
call fcn.00448080
movzx edx, byte [rsp + 0xf0]
mov r9, qword [rsp + 0x60]
movzx r10d, byte [rsp + 0x46]
mov r8, rbx
mov rsi, rax
mov rax, qword [rsp + 0xb8]
mov rbx, qword [rsp + 0x50]
nop
jmp 0x491325
mov rax, r10
mov rcx, rbx
call fcn.00461b60
nop
mov qword [rsp + 8], rax
mov qword [rsp + 0x10], rbx
mov qword [rsp + 0x18], rcx
mov qword [rsp + 0x20], rdi
mov byte [rsp + 0x28], sil
mov byte [rsp + 0x29], r8b
mov qword [rsp + 0x30], r9
mov qword [rsp + 0x38], r10
mov qword [rsp + 0x40], r11
nop dword [rax + rax]
call fcn.0045f8c0
mov rax, qword [rsp + 8]
mov rbx, qword [rsp + 0x10]
mov rcx, qword [rsp + 0x18]
mov rdi, qword [rsp + 0x20]
movzx esi, byte [rsp + 0x28]
movzx r8d, byte [rsp + 0x29]
mov r9, qword [rsp + 0x30]
mov r10, qword [rsp + 0x38]
mov r11, qword [rsp + 0x40]
jmp fcn.00490c40