Function at 0x202317b0
Capabilities:
Authenticate hmac
Encode data using xor
Parse credit card information

Disassembly:
push r14
push rsi
push rdi
push rbp
push rbx
mov qword [r8], 0
test rdx, rdx
je 0x2023197f
movzx eax, word [rcx]
cmp eax, 0x2f
je 0x202317d3
cmp eax, 0x5c
jne 0x2023180a
cmp rdx, 2
jb 0x2023197f
movzx eax, word [rcx + 2]
cmp eax, 0x5c
je 0x202317ef
cmp eax, 0x2f
jne 0x202318dd
cmp rdx, 2
jne 0x20231988
mov qword [r8], 2
mov eax, 2
jmp 0x20231981
mov r11b, 1
xor r9d, r9d
xor r10d, r10d
movabs rax, 0xa7608d98032ac898
lea rsi, [rdx + rax]
movabs rdi, 0x19d2dba5a3ce7eda
sub rsi, rdi
sub rsi, rax
sub rsi, r10
add rsi, rdi
cmp rsi, 2
jb 0x20231a38
movzx eax, word [rcx + r10*2]
and eax, 0xffffffdf
add eax, 0xffffffbf
cmp ax, 0x1a
setae al
setb bl
mov rsi, r10
or rsi, 1
cmp rsi, rdx
setae sil
setb dil
xor dil, bl
and sil, al
or sil, dil
jne 0x20231a38
mov rax, r10
xor rax, 1
nop
inc rax
test rcx, rcx
movzx esi, word [rcx + rax*2 - 2]
mov edi, esi
and edi, 0xffffffdf
xor edi, 0xffffffbf
mov ebx, esi
and ebx, 0x7f9f
lea edi, [rdi + rbx*2]
cmp di, 0x1a
setb bl
mov edi, esi
add edi, 0xffffffd0
cmp di, 0xa
setb bpl
cmp si, 0x24
sete dil
mov r14d, dword [0x205b480c]
cmp r14d, 0x44
jg 0x20231886
or dil, bpl
or dil, bl
je 0x20231a12
cmp rdx, rax
jne 0x20231880
jmp 0x20231a38
cmp rdx, 4
jb 0x2023197f
cmp word [rcx + 2], 0x3f
jne 0x2023197f
mov eax, dword [0x205b4808]
lea r9d, [rax - 1]
imul r9d, eax
test r9b, 1
nop word cs:[rax + rax]
movzx eax, word [rcx + 4]
mov r9d, dword [0x205b480c]
cmp r9d, 0x36
jg 0x20231910
cmp ax, 0x3f
jne 0x2023197f
nop word [rax + rax]
mov eax, dword [0x205b4808]
lea r9d, [rax - 1]
imul r9d, eax
test r9b, 1
jne 0x20231930
lea rax, [fcn.202317b0]
add eax, eax
add eax, 0x3fc0
mov r9d, eax
not r9d
test r9d, eax
jne 0x20231930
movzx eax, word [rcx + 6]
mov r10d, 4
mov r9b, 1
xor r11d, r11d
cmp eax, 0x2f
je 0x20231813
cmp eax, 0x5c
je 0x20231813
xor eax, eax
pop rbx
pop rbp
pop rdi
pop rsi
pop r14
ret
cmp rdx, 4
jb 0x202319f0
movzx eax, word [rcx + 4]
cmp eax, 0x3f
je 0x202319a0
cmp eax, 0x2e
jne 0x202319f0
nop dword [rax]
mov eax, dword [0x205b4808]
mov r9d, eax
not r9d
imul r9d, eax
test r9b, 1
je 0x202319c1
mov eax, dword [0x205b480c]
cmp eax, 0x62
jge 0x202319a0
movzx eax, word [rcx + 6]
mov r9d, dword [0x205b480c]
cmp r9d, 0xb
jg 0x202319b6
mov r10d, 4
mov r9b, 1
xor r11d, r11d
cmp eax, 0x2f
je 0x20231813
cmp eax, 0x5c
je 0x20231813
movzx r9d, word [rcx + 4]
xor eax, eax
cmp r9d, 0x2f
je 0x20231981
cmp r9d, 0x5c
je 0x20231981
mov r10d, 2
mov r9b, 1
jmp 0x20231a71
cmp si, 0x3a
jne 0x20231a38
mov qword [r8], rax
cmp rax, rdx
jae 0x20231a69
movzx ecx, word [rcx + rax*2]
cmp ecx, 0x2f
je 0x20231981
cmp ecx, 0x5c
je 0x20231981
jmp 0x20231a69
mov eax, dword [0x205b480c]
cmp eax, 0x25
jg 0x20231a50
mov al, 1
test al, al
jne 0x20231a64
nop dword [rax]
mov eax, dword [0x205b4808]
lea esi, [rax - 1]
imul esi, eax
test sil, 1
jne 0x20231a50
jmp 0x20231a43
test r11b, r11b
je 0x20231a71
mov rax, rdx
jmp 0x20231981
mov eax, dword [0x205b480c]
cmp eax, 0x4f
jg 0x20231a90
mov eax, dword [0x205b480c]
cmp eax, 0x20
jl 0x20231a9d
nop word [rax + rax]
mov eax, dword [0x205b480c]
cmp eax, 0x33
jge 0x20231a90
jmp 0x20231a7c
mov r11, rdx
sub r11, r10
je 0x20231ad8
lea rcx, [rcx + r10*2]
mov rsi, r10
not rsi
add rsi, rdx
xor eax, eax
nop word cs:[rax + rax]
movzx edx, word [rcx + rax*2]
cmp edx, 0x5c
je 0x20231adf
cmp edx, 0x2f
je 0x20231adf
cmp rsi, rax
je 0x20231adc
inc rax
jmp 0x20231ac0
xor eax, eax
jmp 0x20231adf
mov rax, r11
movabs rcx, 0x9443b75481dde1e1
sub rax, rcx
add rax, r10
mov rdx, rax
xor rdx, rcx
and rax, rcx
lea rax, [rdx + rax*2]
test r9b, r9b
je 0x20231981
mov qword [r8], rax
jmp 0x20231981