Function at 0x10047860
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 0x10047dd3
cmp al, 0xd
je 0x10047dd3
mov ecx, dword [edi + 0xc4]
mov esi, 4
mov ebp, dword [esp + 0x2c]
lea eax, [ecx + 1]
mov dword [edi + 0xc4], eax
test ecx, ecx
jne 0x10047cf5
mov dword [edi + 0xd0], 0
mov eax, dword [edi + 0x18]
mov eax, dword [eax + 0x2ac]
mov eax, dword [eax + 0x48]
test al, 3
je 0x10047a78
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x100478e2
cmp al, 0x20
je 0x100478da
cmp al, 9
jne 0x100478e2
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x100478d2
push 5
push str.HTTP_
push esi
call dword [sym.imp.api_ms_win_crt_string_l1_1_0.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x100479a6
movsx ecx, byte [esi + 5]
mov eax, ecx
sub eax, 0x31
je 0x100479d3
sub eax, 1
je 0x1004792f
sub eax, 1
je 0x1004792f
push str.Unsupported_HTTP_version_in_response
push edi
call fcn.10036610
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 0x1004793a
cmp al, 9
jne 0x100479a6
lea eax, [ecx - 0x30]
lea eax, [eax + eax*4]
add eax, eax
mov dword [edi + 0xd0], eax
mov cl, byte [esi + 7]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x100479a6
mov dl, byte [esi + 8]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x100479a6
mov dh, byte [esi + 9]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x100479a6
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 + 0xd4], eax
mov al, byte [esi + 0xa]
cmp al, 0x20
je 0x10047b56
cmp al, 9
je 0x10047b56
cmp al, 0xa
jl 0x100479a6
cmp al, 0xd
jle 0x10047b56
push ebp
push ebx
push edi
call fcn.10046c60
add esp, 0xc
cmp eax, 1
jne 0x10047d21
mov dword [edi + 0xd4], 0xc8
mov dword [edi + 0xd0], 0xa
jmp 0x10047b56
cmp byte [esi + 6], 0x2e
jne 0x10047a5d
mov al, byte [esi + 7]
cmp al, 0x30
je 0x100479e8
cmp al, 0x31
jne 0x10047a5d
mov cl, byte [esi + 8]
cmp cl, 0x20
je 0x100479f5
cmp cl, 9
jne 0x10047a5d
movsx eax, al
sub eax, 0x26
mov dword [edi + 0xd0], eax
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x10047a5d
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x10047a5d
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x10047a5d
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 + 0xd4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x10047b56
cmp al, 9
je 0x10047b56
sub al, 0xa
cmp al, 3
jbe 0x10047b56
push str.Unsupported_HTTP_1_subversion_in_response
push edi
call fcn.10036610
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
test eax, 0x40000
je 0x10047d21
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x10047aa0
nop dword [eax + eax]
cmp al, 0x20
je 0x10047a98
cmp al, 9
jne 0x10047aa0
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x10047a90
push 5
push str.RTSP_
push esi
call dword [sym.imp.api_ms_win_crt_string_l1_1_0.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x10047d21
mov al, byte [esi + 5]
sub al, 0x30
cmp al, 9
ja 0x10047d28
cmp byte [esi + 6], 0x2e
jne 0x10047d28
mov al, byte [esi + 7]
sub al, 0x30
cmp al, 9
ja 0x10047d28
mov al, byte [esi + 8]
cmp al, 0x20
je 0x10047aec
cmp al, 9
jne 0x10047d28
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x10047d28
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x10047d28
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x10047d28
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 + 0xd4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x10047b4c
cmp al, 9
je 0x10047b4c
sub al, 0xa
cmp al, 3
ja 0x10047d28
mov dword [edi + 0xd0], 0xb
mov ecx, dword [edi + 0xd0]
mov eax, ecx
mov esi, dword [edi + 0x18]
sub eax, 0xa
je 0x10047b80
sub eax, 1
je 0x10047b80
mov eax, ecx
mov ecx, 0xa
cdq
idiv ecx
mov ecx, edx
mov edx, eax
mov eax, str.Unsupported_HTTP_version___u._d__in_response
jmp 0x10047bbd
mov al, byte [esi + 0x514]
test al, al
je 0x10047bd6
movzx ecx, al
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
shr edx, 3
mov dword [esp + 0x24], edx
imul dword [edi + 0xd0]
sar edx, 2
mov ecx, edx
shr ecx, 0x1f
add ecx, edx
mov edx, dword [esp + 0x24]
cmp ecx, edx
je 0x10047bd6
mov eax, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
push ecx
push edx
push eax
push edi
call fcn.10036610
add esp, 0x10
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov eax, dword [edi + 0xd4]
mov dword [edi + 0xd10], eax
mov eax, dword [edi + 0xd0]
mov dword [edi + 0xd18], eax
movzx eax, byte [edi + 0xd0]
mov byte [esi + 0x514], al
mov al, byte [edi + 0xced]
test al, al
je 0x10047c14
mov ecx, dword [edi + 0xd0]
movzx eax, al
cmp eax, ecx
jle 0x10047c26
jmp 0x10047c1a
mov cl, byte [edi + 0xd0]
mov byte [edi + 0xced], cl
mov ecx, dword [edi + 0xd0]
mov eax, dword [edi + 0xbd0]
or eax, dword [edi + 0xbd4]
je 0x10047c50
cmp byte [edi + 0xcee], 0
jne 0x10047c50
cmp dword [edi + 0xd4], 0x1a0
jne 0x10047c50
mov byte [edi + 0x132], 1
cmp ecx, 0xa
jne 0x10047c6d
push str.HTTP_1.0__assume_close_after_body
push edi
call fcn.100366e0
push 1
push esi
call fcn.10038ba0
add esp, 0x10
jmp 0x10047c90
cmp ecx, 0x14
je 0x10047c84
cmp dword [edi + 0xdc], 2
jne 0x10047c90
cmp dword [edi + 0xd4], 0x65
jne 0x10047c90
mov eax, dword [esi + 0x4e8]
mov dword [eax], 2
mov ecx, dword [edi + 0xd4]
lea eax, [ecx - 0x64]
cmp eax, 0x63
setbe al
mov byte [edi + 0x133], al
sub ecx, 0xcc
je 0x10047cc1
sub ecx, 0x64
jne 0x10047cf0
cmp byte [edi + 0x3b0], cl
je 0x10047cc1
mov byte [edi + 0xdd0], 1
mov dword [edi + 0x88], 0
mov dword [edi + 0x8c], 0
mov dword [edi + 0x90], 0
mov dword [edi + 0x94], 0
mov byte [edi + 0x133], 1
mov esi, 0xc
push ebp
push 0
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
je 0x10047d35
mov eax, str.Nul_byte_in_header
push eax
push edi
call fcn.10036610
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov byte [edi + 0x129], 0
pop edi
pop esi
pop ebp
mov eax, 8
pop ebx
add esp, 0x10
ret
mov ecx, dword [edi + 0xc4]
cmp ecx, 2
jl 0x10047d7b
mov al, byte [ebx]
cmp al, 0x20
je 0x10047d4a
cmp al, 9
jne 0x10047d4f
cmp ecx, 2
jg 0x10047d7b
push ebp
push 0x3a
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
jne 0x10047d7b
mov eax, str.Header_without_colon
push eax
push edi
call fcn.10036610
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.100453d0
add esp, 0xc
test eax, eax
jne 0x10047e4e
push ebp
push ebx
push 1
push edi
call fcn.10036560
mov eax, dword [edi + 0xd4]
add esp, 0x10
sub eax, 0x64
cmp eax, 0x64
jae 0x10047dac
or esi, 0x20
push ebp
push ebx
push esi
push edi
call fcn.10037860
add esp, 0x10
test eax, eax
jne 0x10047e4e
push eax
push ebp
push edi
call fcn.10044a10
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.10028bc0
push esi
lea eax, [esp + 0x1c]
push ebx
push eax
call fcn.10028b80
add esp, 0x14
test eax, eax
jne 0x10047e4e
lea eax, [edi + 0x878]
push eax
call fcn.10028bf0
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.10028be0
add esp, 4
push eax
lea eax, [esp + 0x20]
push eax
call fcn.10028c90
add esp, 4
push eax
push edi
call fcn.10046db0
mov ecx, dword [esp + 0x3c]
mov esi, eax
add dword [ebp], ecx
lea eax, [esp + 0x28]
push eax
call fcn.10028b90
add esp, 0x1c
mov eax, esi
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret