Function at 0x4716c0
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
sub esp, 0x10
push ebx
mov ebx, dword [esp + 0x1c]
push ebp
mov ebp, dword [esp + 0x30]
push esi
push edi
mov edi, dword [esp + 0x24]
mov dword [ebp], 0
mov al, byte [ebx]
cmp al, 0xa
je 0x471c15
cmp al, 0xd
je 0x471c15
mov ecx, dword [edi + 0xd4]
mov esi, 4
mov ebp, dword [esp + 0x2c]
lea eax, [ecx + 1]
mov dword [edi + 0xd4], eax
test ecx, ecx
jne 0x471b37
mov dword [edi + 0xe0], 0
mov eax, dword [edi + 0x18]
mov eax, dword [eax + 0x2b4]
mov eax, dword [eax + 0x48]
test eax, 0xc0000003
je 0x4718da
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x471745
cmp al, 0x20
je 0x47173d
cmp al, 9
jne 0x471745
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x471735
push 5
push str.HTTP_
push esi
call fcn.004fbe20
add esp, 0xc
test eax, eax
jne 0x471808
movsx ecx, byte [esi + 5]
mov eax, ecx
sub eax, 0x31
je 0x471835
sub eax, 1
je 0x471791
sub eax, 1
je 0x471791
push str.Unsupported_HTTP_version_in_response
push edi
call fcn.0045d5d0
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov al, byte [esi + 6]
cmp al, 0x20
je 0x47179c
cmp al, 9
jne 0x471808
lea eax, [ecx - 0x30]
lea eax, [eax + eax*4]
add eax, eax
mov dword [edi + 0xe0], eax
mov cl, byte [esi + 7]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x471808
mov dl, byte [esi + 8]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x471808
mov dh, byte [esi + 9]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x471808
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [edi + 0xe4], eax
mov al, byte [esi + 0xa]
cmp al, 0x20
je 0x4719b5
cmp al, 9
je 0x4719b5
cmp al, 0xa
jl 0x471808
cmp al, 0xd
jle 0x4719b5
push ebp
push ebx
push edi
call fcn.004709f0
add esp, 0xc
cmp eax, 1
jne 0x471b63
mov dword [edi + 0xe4], 0xc8
mov dword [edi + 0xe0], 0xa
jmp 0x4719b5
cmp byte [esi + 6], 0x2e
jne 0x4718bf
mov al, byte [esi + 7]
cmp al, 0x30
je 0x47184a
cmp al, 0x31
jne 0x4718bf
mov cl, byte [esi + 8]
cmp cl, 0x20
je 0x471857
cmp cl, 9
jne 0x4718bf
movsx eax, al
sub eax, 0x26
mov dword [edi + 0xe0], eax
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x4718bf
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x4718bf
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x4718bf
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [edi + 0xe4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x4719b5
cmp al, 9
je 0x4719b5
sub al, 0xa
cmp al, 3
jbe 0x4719b5
push str.Unsupported_HTTP_1_subversion_in_response
push edi
call fcn.0045d5d0
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
test eax, 0x40000
je 0x471b63
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x471900
nop dword [eax]
cmp al, 0x20
je 0x4718f8
cmp al, 9
jne 0x471900
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x4718f0
push 5
push str.RTSP_
push esi
call fcn.004fbe20
add esp, 0xc
test eax, eax
jne 0x471b63
mov al, byte [esi + 5]
sub al, 0x30
cmp al, 9
ja 0x471b6a
cmp byte [esi + 6], 0x2e
jne 0x471b6a
mov al, byte [esi + 7]
sub al, 0x30
cmp al, 9
ja 0x471b6a
mov al, byte [esi + 8]
cmp al, 0x20
je 0x47194b
cmp al, 9
jne 0x471b6a
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x471b6a
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x471b6a
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x471b6a
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [edi + 0xe4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x4719ab
cmp al, 9
je 0x4719ab
sub al, 0xa
cmp al, 3
ja 0x471b6a
mov dword [edi + 0xe0], 0xb
mov ecx, dword [edi + 0xe0]
mov eax, ecx
mov esi, dword [edi + 0x18]
mov dword [esp + 0x38], esi
sub eax, 0xa
je 0x4719e1
sub eax, 1
je 0x4719e1
mov eax, ecx
mov ecx, 0xa
cdq
idiv ecx
mov ecx, str.Unsupported_HTTP_version___u._d__in_response
mov esi, edx
jmp 0x471a20
mov al, byte [esi + 0x518]
test al, al
je 0x471a3d
movzx ecx, al
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
mov ecx, edx
imul dword [edi + 0xe0]
shr ecx, 3
sar edx, 2
mov esi, edx
mov dword [esp + 0x24], ecx
shr esi, 0x1f
add esi, edx
cmp esi, ecx
je 0x471a39
mov eax, dword [esp + 0x24]
mov ecx, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
push esi
push eax
push ecx
push edi
call fcn.0045d5d0
add esp, 0x10
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov esi, dword [esp + 0x38]
mov eax, dword [edi + 0xe4]
mov dword [edi + 0xd50], eax
mov eax, dword [edi + 0xe0]
mov dword [edi + 0xd58], eax
movzx eax, byte [edi + 0xe0]
mov byte [esi + 0x518], al
mov al, byte [edi + 0xd2d]
test al, al
je 0x471a7b
mov ecx, dword [edi + 0xe0]
movzx eax, al
cmp eax, ecx
jle 0x471a8d
jmp 0x471a81
mov cl, byte [edi + 0xe0]
mov byte [edi + 0xd2d], cl
mov ecx, dword [edi + 0xe0]
mov eax, dword [edi + 0xbf8]
or eax, dword [edi + 0xbfc]
je 0x471ab7
cmp byte [edi + 0xd2e], 0
jne 0x471ab7
cmp dword [edi + 0xe4], 0x1a0
jne 0x471ab7
mov byte [edi + 0x143], 1
cmp ecx, 0xa
jne 0x471ad2
push str.HTTP_1.0__assume_close_after_body
push edi
call fcn.0045d6a0
push 1
push esi
call fcn.0045fe20
add esp, 0x10
mov ecx, dword [edi + 0xe4]
lea eax, [ecx - 0x64]
cmp eax, 0x63
setbe al
mov byte [edi + 0x144], al
sub ecx, 0xcc
je 0x471b03
sub ecx, 0x64
jne 0x471b32
cmp byte [edi + 0x3c0], cl
je 0x471b03
mov byte [edi + 0xe10], 1
mov dword [edi + 0x98], 0
mov dword [edi + 0x9c], 0
mov dword [edi + 0xa0], 0
mov dword [edi + 0xa4], 0
mov byte [edi + 0x144], 1
mov esi, 0xc
push ebp
push 0
push ebx
call fcn.004f0ef0
add esp, 0xc
test eax, eax
je 0x471b77
mov eax, str.Nul_byte_in_header
push eax
push edi
call fcn.0045d5d0
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov byte [edi + 0x139], 0
pop edi
pop esi
pop ebp
mov eax, 8
pop ebx
add esp, 0x10
ret
mov ecx, dword [edi + 0xd4]
cmp ecx, 2
jl 0x471bbd
mov al, byte [ebx]
cmp al, 0x20
je 0x471b8c
cmp al, 9
jne 0x471b91
cmp ecx, 2
jg 0x471bbd
push ebp
push 0x3a
push ebx
call fcn.004f0ef0
add esp, 0xc
test eax, eax
jne 0x471bbd
mov eax, str.Header_without_colon
push eax
push edi
call fcn.0045d5d0
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
push ebp
push ebx
push edi
call fcn.0046f160
add esp, 0xc
test eax, eax
jne 0x471c90
push ebp
push ebx
push 1
push edi
call fcn.0045d530
mov eax, dword [edi + 0xe4]
add esp, 0x10
sub eax, 0x64
cmp eax, 0x64
jae 0x471bee
or esi, 0x20
push ebp
push ebx
push esi
push edi
call fcn.0045e8f0
add esp, 0x10
test eax, eax
jne 0x471c90
push eax
push ebp
push edi
call fcn.0046e750
add esp, 0xc
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov esi, dword [esp + 0x2c]
lea eax, [esi + 1]
push eax
lea eax, [esp + 0x14]
push eax
call fcn.0044fd40
push esi
lea eax, [esp + 0x1c]
push ebx
push eax
call fcn.0044fd00
add esp, 0x14
test eax, eax
jne 0x471c90
lea eax, [edi + 0x8a0]
push eax
call fcn.0044fd60
add esp, 4
lea eax, [esp + 0x24]
push eax
push dword [esp + 0x38]
lea eax, [esp + 0x18]
push dword [esp + 0x38]
push eax
call fcn.0044dd10
add esp, 4
push eax
lea eax, [esp + 0x20]
push eax
call fcn.0044dc60
add esp, 4
push eax
push edi
call fcn.00470b40
mov ecx, dword [esp + 0x3c]
mov esi, eax
add dword [ebp], ecx
lea eax, [esp + 0x28]
push eax
call fcn.0044fd10
add esp, 0x1c
mov eax, esi
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret