Function at 0x140068e20
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rbp
mov qword [rsp + 0x18], rsi
mov qword [rsp + 0x20], rdi
push r12
push r14
push r15
sub rsp, 0x50
mov r14, qword [rsp + 0x98]
xor r12d, r12d
mov r15, r9
mov rbp, r8
mov rsi, rdx
mov rdi, rcx
mov qword [r14], r12
movzx eax, byte [rdx]
cmp al, 0xa
je 0x140069394
cmp al, 0xd
je 0x140069394
lea r14, [rcx + 0x13c]
mov ebx, 4
mov ecx, dword [r14]
mov r15d, 1
lea eax, [rcx + 1]
mov dword [r14], eax
test ecx, ecx
jne 0x1400692af
mov dword [rdi + 0x148], r12d
mov rax, qword [rdi + 0x18]
mov rcx, qword [rax + 0x3e0]
mov eax, dword [rcx + 0x8c]
test al, 3
je 0x14006904d
movzx eax, byte [rdx]
mov rbx, rdx
test al, al
je 0x140068ecc
cmp al, 0x20
je 0x140068ec1
cmp byte [rbx], 9
jne 0x140068ecc
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x140068eb8
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rbx
call fcn.1400992a0
test eax, eax
jne 0x140068f85
movsx edx, byte [rbx + 5]
mov ecx, edx
sub ecx, 0x31
je 0x140068fb5
sub ecx, r15d
je 0x140068f19
cmp ecx, r15d
je 0x140068f19
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rdi
call fcn.140027e30
mov eax, r15d
jmp 0x14006941d
movzx eax, byte [rbx + 6]
cmp al, 0x20
je 0x140068f25
cmp al, 9
jne 0x140068f85
lea eax, [rdx - 0x30]
lea ecx, [rax + rax*4]
add ecx, ecx
mov dword [rdi + 0x148], ecx
movsx ecx, byte [rbx + 7]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140068f85
movsx edx, byte [rbx + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140068f85
movsx r8d, byte [rbx + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140068f85
lea ecx, [rcx + rcx*4]
lea ecx, [rdx + rcx*2]
lea ecx, [rcx + rcx*4]
lea ecx, [rcx - 0xa68]
lea ecx, [r8 + rcx*2]
mov dword [rdi + 0x14c], ecx
movzx eax, byte [rbx + 0xa]
cmp al, 0x20
je 0x140069130
sub al, 9
cmp al, 4
jbe 0x140069130
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.140067fe0
cmp eax, r15d
jne 0x1400692da
mov dword [rdi + 0x14c], 0xc8
mov dword [rdi + 0x148], 0xa
jmp 0x140069130
cmp byte [rbx + 6], 0x2e
jne 0x140069036
movsx ecx, byte [rbx + 7]
lea eax, [rcx - 0x30]
cmp al, r15b
ja 0x140069036
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x140068fd3
cmp al, 9
jne 0x140069036
lea eax, [rcx - 0x26]
mov dword [rdi + 0x148], eax
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140069036
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140069036
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140069036
lea ecx, [rcx + rcx*4]
lea ecx, [rdx + rcx*2]
lea ecx, [rcx + rcx*4]
lea ecx, [rcx - 0xa68]
lea ecx, [r8 + rcx*2]
mov dword [rdi + 0x14c], ecx
movzx eax, byte [rbx + 0xc]
cmp al, 0x20
je 0x140069130
cmp al, 9
je 0x140069130
sub al, 0xa
cmp al, 3
jbe 0x140069130
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rdi
call fcn.140027e30
mov eax, r15d
jmp 0x14006941d
bt eax, 0x12
jae 0x1400692da
movzx eax, byte [rdx]
mov rbx, rsi
test al, al
je 0x140069075
cmp al, 0x20
je 0x14006906a
cmp byte [rbx], 9
jne 0x140069075
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x140069061
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rbx
call fcn.1400992a0
test eax, eax
jne 0x1400692da
movzx eax, byte [rbx + 5]
sub al, 0x30
cmp al, 9
ja 0x1400692e1
cmp byte [rbx + 6], 0x2e
jne 0x1400692e1
movzx eax, byte [rbx + 7]
sub al, 0x30
cmp al, 9
ja 0x1400692e1
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x1400690c8
cmp al, 9
jne 0x1400692e1
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1400692e1
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1400692e1
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1400692e1
lea ecx, [rcx + rcx*4]
lea ecx, [rdx + rcx*2]
lea ecx, [rcx + rcx*4]
lea ecx, [rcx - 0xa68]
lea ecx, [r8 + rcx*2]
mov dword [rdi + 0x14c], ecx
movzx eax, byte [rbx + 0xc]
cmp al, 0x20
je 0x140069126
cmp al, 9
je 0x140069126
sub al, 0xa
cmp al, 3
ja 0x1400692e1
mov dword [rdi + 0x148], sendto
mov r9d, dword [rdi + 0x148]
mov ecx, r9d
mov rbx, qword [rdi + 0x18]
sub ecx, 0xa
je 0x140069180
cmp ecx, r15d
je 0x140069180
mov eax, 0x66666667
mov rcx, rdi
imul r9d
mov r8d, edx
lea rdx, str.Unsupported_HTTP_version___u._d__in_response
sar r8d, 2
mov eax, r8d
shr eax, 0x1f
add r8d, eax
lea eax, [r8 + r8*4]
add eax, eax
sub r9d, eax
call fcn.140027e30
mov eax, r15d
jmp 0x14006941d
movzx eax, byte [rbx + 0x7e0]
test al, al
je 0x1400691cf
mov ecx, eax
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
mov r8d, edx
imul r9d
shr r8d, 3
mov r9d, edx
sar r9d, 2
mov eax, r9d
shr eax, 0x1f
add r9d, eax
cmp r9d, r8d
je 0x1400691cf
lea rdx, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
mov rcx, rdi
call fcn.140027e30
mov eax, r15d
jmp 0x14006941d
mov eax, dword [rdi + 0x14c]
mov dword [rdi + 0x1338], eax
mov eax, dword [rdi + 0x148]
mov dword [rdi + 0x1340], eax
movzx eax, byte [rdi + 0x148]
mov byte [rbx + 0x7e0], al
movzx eax, byte [rdi + 0x1319]
test al, al
je 0x140069207
cmp eax, dword [rdi + 0x148]
jle 0x140069214
movzx eax, byte [rdi + 0x148]
mov byte [rdi + 0x1319], al
cmp qword [rdi + 0x1120], r12
je 0x140069239
cmp byte [rdi + 0x131a], r12b
jne 0x140069239
cmp dword [rdi + 0x14c], 0x1a0
jne 0x140069239
mov byte [rdi + 0x1e3], r15b
cmp dword [rdi + 0x148], 0xa
jne 0x14006925c
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rdi
call fcn.140027f20
mov edx, r15d
mov rcx, rbx
call fcn.1400436d0
mov ecx, dword [rdi + 0x14c]
lea eax, [rcx - 0x64]
cmp eax, 0x63
setbe al
mov byte [rdi + 0x1e4], al
sub ecx, 0xcc
je 0x14006928e
cmp ecx, 0x64
jne 0x1400692a3
cmp byte [rdi + 0x538], r12b
je 0x14006928e
mov byte [rdi + 0x1414], r15b
mov qword [rdi + 0x100], r12
mov qword [rdi + 0x108], r12
mov byte [rdi + 0x1e4], r15b
mov ebx, listen
lea r14, [rdi + 0x13c]
mov r8, rbp
xor edx, edx
mov rcx, rsi
call fcn.1400b6ac0
test rax, rax
je 0x1400692eb
lea rdx, str.Nul_byte_in_header
mov rcx, rdi
mov ebx, 8
call fcn.140027e30
jmp 0x14006941b
mov byte [rdi + 0x1d9], r12b
mov eax, 8
jmp 0x14006941d
mov ecx, dword [r14]
cmp ecx, 2
jl 0x140069331
movzx eax, byte [rsi]
cmp al, 0x20
je 0x1400692fe
cmp al, 9
jne 0x140069303
cmp ecx, 2
jg 0x140069331
mov r8, rbp
mov edx, 0x3a
mov rcx, rsi
call fcn.1400b6ac0
test rax, rax
jne 0x140069331
lea rdx, str.Header_without_colon
mov rcx, rdi
mov ebx, 8
call fcn.140027e30
jmp 0x14006941b
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.1400663f0
test eax, eax
jne 0x14006941d
mov r9, rbp
mov r8, rsi
mov edx, r15d
mov rcx, rdi
call fcn.140027d40
mov eax, dword [rdi + 0x14c]
sub eax, 0x64
cmp eax, 0x64
jae 0x140069369
or ebx, 0x20
mov r9, rbp
mov r8, rsi
mov edx, ebx
mov rcx, rdi
call fcn.1400269e0
test eax, eax
jne 0x14006941d
xor r8d, r8d
mov rdx, rbp
mov rcx, rdi
call fcn.1400658f0
jmp 0x14006941d
lea rdx, [r8 + 1]
lea rcx, [rsp + 0x30]
call fcn.140027b00
mov r8, rbp
lea rcx, [rsp + 0x30]
mov rdx, rsi
call fcn.140027ac0
test eax, eax
jne 0x14006941d
lea rcx, [rdi + 0xc58]
call fcn.140027b40
lea rcx, [rsp + 0x30]
call fcn.140027b20
lea rcx, [rsp + 0x30]
mov rbx, rax
call fcn.140027b30
mov rcx, qword [rsp + 0x90]
mov rdx, rax
lea rax, [rsp + 0x98]
mov r9, r15
mov qword [rsp + 0x28], rax
mov r8, rbx
mov qword [rsp + 0x20], rcx
mov rcx, rdi
call fcn.140068120
mov rcx, qword [rsp + 0x98]
mov ebx, eax
add qword [r14], rcx
lea rcx, [rsp + 0x30]
call fcn.140027ad0
mov eax, ebx
lea r11, [rsp + 0x50]
mov rbx, qword [r11 + 0x20]
mov rbp, qword [r11 + 0x28]
mov rsi, qword [r11 + 0x30]
mov rdi, qword [r11 + 0x38]
mov rsp, r11
pop r15
pop r14
pop r12
ret