Function at 0x18007b6f0
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
mov qword [rsp + 0x18], rbx
mov qword [rsp + 0x20], r9
push rbp
push rsi
push rdi
push r12
push r13
push r14
push r15
sub rsp, 0x20
mov r13, qword [rcx + 0x20]
lea r14, [rcx + 0xca0]
mov qword [r9], 0
mov r15, r9
mov r12, r8
mov rsi, rdx
mov rbx, rcx
mov ebp, 5
mov r8, r12
mov rcx, rsi
lea edx, [rbp + 5]
call sub.VCRUNTIME140.dll_memchr
mov rdi, rax
mov rdx, rsi
mov rcx, r14
test rax, rax
je 0x18007bf36
sub rdi, rsi
inc rdi
mov r8, rdi
call fcn.1800637c0
test eax, eax
jne 0x18007be46
add qword [r15], rdi
add rsi, rdi
sub r12, rdi
mov qword [rsp + 0x68], rsi
cmp dword [rbx + 0x12c], eax
jne 0x18007b7e4
mov rcx, r14
call fcn.180063820
mov rcx, r14
mov rsi, rax
call fcn.180063830
mov rcx, qword [r13 + 0x360]
mov rdx, rax
test dword [rcx + 0x84], 0x40000
je 0x18007b7c9
xor edi, edi
lea rcx, str.RTSP_
cmp rsi, rbp
cmova rsi, rbp
setae dil
mov r8, rsi
call fcn.180072c50
test eax, eax
mov ecx, 2
cmovne ecx, edi
jmp 0x18007b7d6
mov r8, rsi
mov rcx, rbx
call fcn.18007aca0
mov ecx, eax
cmp ecx, 2
je 0x18007be5b
mov rsi, qword [rsp + 0x68]
lea rcx, [rbx + 0xca0]
call fcn.180063830
mov rcx, r14
mov r15, rax
call fcn.180063820
movzx ecx, byte [r15]
mov rbp, rax
cmp cl, 0xa
je 0x18007bd25
cmp cl, 0xd
je 0x18007bd25
mov edx, dword [rbx + 0x12c]
mov edi, 4
mov rsi, r14
lea ecx, [rdx + 1]
mov dword [rbx + 0x12c], ecx
test edx, edx
jne 0x18007bbeb
xor esi, esi
mov dword [rbx + 0x138], esi
mov rax, qword [r13 + 0x360]
mov ecx, dword [rax + 0x84]
test cl, 3
je 0x18007b9e2
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x18007b873
nop dword [rax]
cmp al, 0x20
je 0x18007b868
cmp al, 9
jne 0x18007b873
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x18007b860
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rdi
call sub.api_ms_win_crt_string_l1_1_0.dll_strncmp
test eax, eax
jne 0x18007b919
movsx edx, byte [rdi + 5]
mov ecx, edx
sub ecx, 0x31
je 0x18007b949
sub ecx, 1
je 0x18007b8ad
cmp ecx, 1
jne 0x18007be8f
movzx eax, byte [rdi + 6]
cmp al, 0x20
je 0x18007b8b9
cmp al, 9
jne 0x18007b919
lea eax, [rdx - 0x30]
lea ecx, [rax + rax*4]
add ecx, ecx
mov dword [rbx + 0x138], ecx
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x18007b919
movsx edx, byte [rdi + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x18007b919
movsx r8d, byte [rdi + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x18007b919
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 [rbx + 0x13c], ecx
movzx eax, byte [rdi + 0xa]
cmp al, 0x20
je 0x18007bac5
sub al, 9
cmp al, 4
jbe 0x18007bac5
mov r8, rbp
mov rdx, r15
mov rcx, rbx
call fcn.18007aca0
cmp eax, 1
jne 0x18007bedb
mov dword [rbx + 0x13c], 0xc8
mov dword [rbx + 0x138], 0xa
jmp 0x18007bac5
cmp byte [rdi + 6], 0x2e
jne 0x18007b9c9
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 1
ja 0x18007b9c9
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x18007b966
cmp al, 9
jne 0x18007b9c9
lea eax, [rcx - 0x26]
mov dword [rbx + 0x138], eax
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x18007b9c9
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x18007b9c9
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x18007b9c9
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 [rbx + 0x13c], ecx
movzx eax, byte [rdi + 0xc]
cmp al, 0x20
je 0x18007bac5
cmp al, 9
je 0x18007bac5
sub al, 0xa
cmp al, 3
jbe 0x18007bac5
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rbx
call fcn.18006cc10
mov eax, 1
jmp 0x18007be46
bt ecx, 0x12
jae 0x18007bedb
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x18007ba0a
cmp al, 0x20
je 0x18007b9ff
cmp al, 9
jne 0x18007ba0a
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x18007b9f7
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rdi
call sub.api_ms_win_crt_string_l1_1_0.dll_strncmp
test eax, eax
jne 0x18007bedb
movzx eax, byte [rdi + 5]
sub al, 0x30
cmp al, 9
ja 0x18007bfd6
cmp byte [rdi + 6], 0x2e
jne 0x18007bfd6
movzx eax, byte [rdi + 7]
sub al, 0x30
cmp al, 9
ja 0x18007bfd6
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x18007ba5d
cmp al, 9
jne 0x18007bfd6
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x18007bfd6
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x18007bfd6
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x18007bfd6
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 [rbx + 0x13c], ecx
movzx eax, byte [rdi + 0xc]
cmp al, 0x20
je 0x18007babb
cmp al, 9
je 0x18007babb
sub al, 0xa
cmp al, 3
ja 0x18007bfd6
mov dword [rbx + 0x138], recvfrom
mov r9d, dword [rbx + 0x138]
mov ecx, r9d
sub ecx, 0xa
je 0x18007badd
cmp ecx, 1
jne 0x18007bea5
mov byte [r13 + 0x778], r9b
mov eax, dword [rbx + 0x13c]
mov dword [rbx + 0x1310], eax
mov eax, dword [rbx + 0x138]
mov dword [rbx + 0x1318], eax
movzx eax, byte [rbx + 0x138]
mov byte [r13 + 0x778], al
movzx eax, byte [rbx + 0x12f1]
test al, al
je 0x18007bb1d
cmp eax, dword [rbx + 0x138]
jle 0x18007bb2a
movzx eax, byte [rbx + 0x138]
mov byte [rbx + 0x12f1], al
cmp qword [rbx + 0x10f8], rsi
je 0x18007bb4f
cmp byte [rbx + 0x12f2], sil
jne 0x18007bb4f
cmp dword [rbx + 0x13c], 0x1a0
jne 0x18007bb4f
mov byte [rbx + 0x1da], 1
mov eax, dword [rbx + 0x138]
cmp eax, 0xa
jne 0x18007bb78
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rbx
call fcn.18006cd00
mov edx, 1
mov rcx, r13
call fcn.18006f940
jmp 0x18007bb9c
cmp eax, 0x14
je 0x18007bb8f
cmp dword [rbx + 0x144], 2
jne 0x18007bb9c
cmp dword [rbx + 0x13c], 0x65
jne 0x18007bb9c
mov rax, qword [r13 + 0x740]
mov dword [rax], 2
mov ecx, dword [rbx + 0x13c]
lea eax, [rcx - 0x64]
cmp eax, 0x63
setbe al
mov byte [rbx + 0x1db], al
sub ecx, 0xcc
je 0x18007bbce
cmp ecx, 0x64
jne 0x18007bbe3
cmp byte [rbx + 0x530], sil
je 0x18007bbce
mov byte [rbx + 0x13ec], 1
mov qword [rbx + 0xf0], rsi
mov qword [rbx + 0xf8], rsi
mov byte [rbx + 0x1db], 1
mov edi, ntohs
mov rsi, r14
lea rcx, [rbx + 0xca0]
call fcn.180063830
mov rcx, rsi
mov r14, rax
call fcn.180063820
mov r8, rax
xor edx, edx
mov rcx, r14
mov rsi, rax
call sub.VCRUNTIME140.dll_memchr
test rax, rax
jne 0x18007bf02
mov edx, dword [rbx + 0x12c]
cmp edx, 2
jl 0x18007bc52
movzx ecx, byte [r14]
cmp cl, 0x20
je 0x18007bc34
cmp cl, 9
jne 0x18007bc39
cmp edx, 2
jg 0x18007bc52
mov r8, rsi
mov edx, 0x3a
mov rcx, r14
call sub.VCRUNTIME140.dll_memchr
test rax, rax
je 0x18007bee7
mov r9, rbp
mov r8, r15
mov rdx, r13
mov rcx, rbx
call fcn.180079130
test eax, eax
jne 0x18007be46
mov r9, rbp
lea edx, [rax + 1]
mov r8, r15
mov rcx, rbx
call fcn.18006cb30
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x64
jae 0x18007bc8d
or edi, 0x20
mov r9, rbp
mov r8, r15
mov edx, edi
mov rcx, rbx
call fcn.18006dd10
test eax, eax
jne 0x18007be46
mov edx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x18007bced
mov ecx, dword [rbx + 0x1358]
lea eax, [rdx + rbp]
add dword [rbx + 0x120], ebp
add ecx, ebp
mov dword [rbx + 0x1358], ecx
mov dword [rbx + 0x124], eax
cmp eax, r9d
ja 0x18007bce8
cmp ecx, 0x5dc000
jbe 0x18007bcfa
mov r9d, 0x5dc000
mov eax, ecx
mov r8d, eax
jmp 0x18007bcf1
lea r8, [rdx + rbp]
test r8, r8
jne 0x18007bf1d
lea rcx, [rbx + 0xca0]
call fcn.180063840
test r12, r12
je 0x18007be27
mov rsi, qword [rsp + 0x68]
lea r14, [rbx + 0xca0]
mov r15, qword [rsp + 0x78]
jmp 0x18007b727
mov r9, rbp
mov r8, r15
mov edx, 1
mov rcx, rbx
call fcn.18006cb30
mov eax, dword [rbx + 0x13c]
mov edx, 4
sub eax, 0x64
mov r9, rbp
cmp eax, 0x64
mov r8, r15
mov eax, 0x24
mov rcx, rbx
cmovb edx, eax
call fcn.18006dd10
test eax, eax
jne 0x18007be46
mov ecx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x18007bdb4
mov r8d, dword [rbx + 0x1358]
lea edx, [rcx + rbp]
add dword [rbx + 0x120], ebp
add r8d, ebp
mov dword [rbx + 0x1358], r8d
mov dword [rbx + 0x124], edx
cmp edx, r9d
ja 0x18007bdaf
cmp r8d, 0x5dc000
jbe 0x18007bdc1
mov r9d, 0x5dc000
mov edx, r8d
mov r8d, edx
jmp 0x18007bdb8
lea r8, [rcx + rbp]
test r8, r8
jne 0x18007bf1d
lea rcx, [rbx + 0xca0]
call fcn.180063840
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x63
ja 0x18007bde3
mov eax, dword [rbx + 0x120]
jmp 0x18007bde5
xor eax, eax
lea r9, [rsp + 0x60]
mov dword [rbx + 0x128], eax
mov r8, r12
mov rdx, rsi
mov rcx, rbx
call fcn.18007ade0
test eax, eax
jne 0x18007be46
mov rax, qword [rsp + 0x60]
mov r15, qword [rsp + 0x78]
sub r12, rax
add rsi, rax
add qword [r15], rax
cmp byte [rbx + 0x1d1], 0
je 0x18007be27
test r12, r12
jne 0x18007b727
xor bpl, bpl
cmp byte [rbx + 0x1d1], 0
jne 0x18007be44
test bpl, bpl
jne 0x18007be44
lea rcx, [rbx + 0xca0]
call fcn.1800637d0
xor eax, eax
mov rbx, qword [rsp + 0x70]
add rsp, 0x20
pop r15
pop r14
pop r13
pop r12
pop rdi
pop rsi
pop rbp
ret
mov edx, 2
mov rcx, r13
call fcn.18006f940
cmp byte [r13 + 0x778], 0xa
jae 0x18007bfc7
cmp byte [rbx + 0xac9], 0
je 0x18007bfae
mov byte [rbx + 0x1d1], 0
mov bpl, 1
jmp 0x18007be2a
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rbx
call fcn.18006cc10
mov eax, 1
jmp 0x18007be46
mov eax, 0x66666667
imul r9d
sar edx, 2
mov ecx, edx
shr ecx, 0x1f
add edx, ecx
mov r8d, edx
lea ecx, [rdx + rdx*4]
add ecx, ecx
lea rdx, str.Unsupported_HTTP_version___u._d__in_response
sub r9d, ecx
mov rcx, rbx
call fcn.18006cc10
mov eax, 1
jmp 0x18007be46
mov byte [rbx + 0x1d1], sil
jmp 0x18007be27
lea rdx, str.Header_without_colon
mov rcx, rbx
mov edi, 8
call fcn.18006cc10
mov eax, edi
jmp 0x18007be46
lea rdx, str.Nul_byte_in_header
mov rcx, rbx
mov edi, 8
call fcn.18006cc10
mov eax, edi
jmp 0x18007be46
lea rdx, str.Too_large_response_headers:__zu____u
mov rcx, rbx
call fcn.18006cc10
mov eax, gethostname
jmp 0x18007be46
mov r8, r12
call fcn.1800637c0
test eax, eax
jne 0x18007be46
add qword [r15], r12
cmp dword [rbx + 0x12c], eax
jne 0x18007be27
mov rcx, r14
call fcn.180063820
mov rcx, r14
mov rdi, rax
call fcn.180063830
mov r8, rax
mov r9, rdi
mov rdx, r13
mov rcx, rbx
call fcn.18007ad70
cmp eax, 2
jne 0x18007be27
mov edx, eax
mov byte [rbx + 0x1d1], 0
mov rcx, r13
call fcn.18006f940
cmp byte [r13 + 0x778], 0xa
jae 0x18007bfc7
cmp byte [rbx + 0xac9], 0
je 0x18007bfae
mov bpl, 1
jmp 0x18007be2a
lea rdx, str.Received_HTTP_0.9_when_not_allowed
mov rcx, rbx
call fcn.18006cc10
mov eax, 1
jmp 0x18007be46
lea rdx, str.Invalid_status_line
mov rcx, rbx
call fcn.18006cc10
mov eax, 8
jmp 0x18007be46