Function at 0x44e6d0
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 0x44ec48
cmp al, 0xd
je 0x44ec48
mov ecx, dword [edi + 0xc4]
lea ebp, [edi + 0xc4]
mov esi, 4
lea eax, [ecx + 1]
mov dword [ebp], eax
test ecx, ecx
jne 0x44eb62
mov dword [edi + 0xd0], ecx
mov eax, dword [edi + 0x18]
mov eax, dword [eax + 0x2ac]
mov eax, dword [eax + 0x48]
test al, 3
je 0x44e8ea
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x44e751
nop dword [eax]
cmp al, 0x20
je 0x44e749
cmp byte [esi], 9
jne 0x44e751
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x44e740
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 0x44e815
movsx ecx, byte [esi + 5]
mov eax, ecx
sub eax, 0x31
je 0x44e845
sub eax, 1
je 0x44e79e
sub eax, 1
je 0x44e79e
push str.Unsupported_HTTP_version_in_response
push edi
call fcn.0043d250
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 0x44e7a9
cmp al, 9
jne 0x44e815
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 0x44e815
mov dl, byte [esi + 8]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x44e815
mov dh, byte [esi + 9]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x44e815
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 0x44e9c7
cmp al, 9
je 0x44e9c7
cmp al, 0xa
jl 0x44e815
cmp al, 0xd
jle 0x44e9c7
push dword [esp + 0x2c]
push ebx
push edi
call fcn.0044dae0
add esp, 0xc
cmp eax, 1
jne 0x44eb91
mov dword [edi + 0xd4], 0xc8
mov dword [edi + 0xd0], 0xa
jmp 0x44e9c7
cmp byte [esi + 6], 0x2e
jne 0x44e8cf
mov al, byte [esi + 7]
cmp al, 0x30
je 0x44e85a
cmp al, 0x31
jne 0x44e8cf
mov cl, byte [esi + 8]
cmp cl, 0x20
je 0x44e867
cmp cl, 9
jne 0x44e8cf
movsx eax, al
sub eax, 0x26
mov dword [edi + 0xd0], eax
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x44e8cf
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x44e8cf
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x44e8cf
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 0x44e9c7
cmp al, 9
je 0x44e9c7
sub al, 0xa
cmp al, 3
jbe 0x44e9c7
push str.Unsupported_HTTP_1_subversion_in_response
push edi
call fcn.0043d250
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
test eax, 0x40000
je 0x44eb91
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x44e911
nop dword [eax]
cmp al, 0x20
je 0x44e909
cmp byte [esi], 9
jne 0x44e911
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x44e900
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 0x44eb91
mov al, byte [esi + 5]
sub al, 0x30
cmp al, 9
ja 0x44eb98
cmp byte [esi + 6], 0x2e
jne 0x44eb98
mov al, byte [esi + 7]
sub al, 0x30
cmp al, 9
ja 0x44eb98
mov al, byte [esi + 8]
cmp al, 0x20
je 0x44e95d
cmp al, 9
jne 0x44eb98
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x44eb98
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x44eb98
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x44eb98
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 0x44e9bd
cmp al, 9
je 0x44e9bd
sub al, 0xa
cmp al, 3
ja 0x44eb98
mov dword [edi + 0xd0], 0xb
mov ecx, dword [edi + 0xd0]
mov eax, ecx
mov esi, dword [edi + 0x18]
sub eax, 0xa
je 0x44e9f1
sub eax, 1
je 0x44e9f1
mov eax, ecx
mov ecx, 0xa
cdq
idiv ecx
mov ebp, eax
mov ecx, edx
mov eax, str.Unsupported_HTTP_version___u._d__in_response
jmp 0x44ea28
mov al, byte [esi + 0x514]
test al, al
je 0x44ea41
movzx ecx, al
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
mov ebp, edx
imul dword [edi + 0xd0]
shr ebp, 3
sar edx, 2
mov ecx, edx
shr ecx, 0x1f
add ecx, edx
cmp ecx, ebp
je 0x44ea41
mov eax, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
push ecx
push ebp
push eax
push edi
call fcn.0043d250
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 0x44ea7b
movzx eax, al
cmp eax, dword [edi + 0xd0]
jle 0x44ea87
mov al, byte [edi + 0xd0]
mov byte [edi + 0xced], al
mov eax, dword [edi + 0xbd0]
or eax, dword [edi + 0xbd4]
je 0x44eab1
cmp byte [edi + 0xcee], 0
jne 0x44eab1
cmp dword [edi + 0xd4], 0x1a0
jne 0x44eab1
mov byte [edi + 0x132], 1
mov eax, dword [edi + 0xd0]
cmp eax, 0xa
jne 0x44ead4
push str.HTTP_1.0__assume_close_after_body
push edi
call fcn.0043d320
push 1
push esi
call fcn.0043f930
add esp, 0x10
jmp 0x44eaf7
cmp eax, 0x14
je 0x44eaeb
cmp dword [edi + 0xdc], 2
jne 0x44eaf7
cmp dword [edi + 0xd4], 0x65
jne 0x44eaf7
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 0x44eb28
sub ecx, 0x64
jne 0x44eb57
cmp byte [edi + 0x3b0], cl
je 0x44eb28
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
lea ebp, [edi + 0xc4]
push dword [esp + 0x2c]
push 0
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
je 0x44eba5
mov eax, str.Nul_byte_in_header
push eax
push edi
call fcn.0043d250
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 [ebp]
cmp ecx, 2
jl 0x44ebec
mov al, byte [ebx]
cmp al, 0x20
je 0x44ebb7
cmp al, 9
jne 0x44ebbc
cmp ecx, 2
jg 0x44ebec
mov ebp, dword [esp + 0x2c]
push ebp
push 0x3a
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
jne 0x44ebf0
mov eax, str.Header_without_colon
push eax
push edi
call fcn.0043d250
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov ebp, dword [esp + 0x2c]
push ebp
push ebx
push edi
call fcn.0044c230
add esp, 0xc
test eax, eax
jne 0x44ecc3
push ebp
push ebx
push 1
push edi
call fcn.0043d1a0
mov eax, dword [edi + 0xd4]
add esp, 0x10
sub eax, 0x64
cmp eax, 0x64
jae 0x44ec21
or esi, 0x20
push ebp
push ebx
push esi
push edi
call fcn.0043e4b0
add esp, 0x10
test eax, eax
jne 0x44ecc3
push eax
push ebp
push edi
call fcn.0044b870
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.00430230
push esi
lea eax, [esp + 0x1c]
push ebx
push eax
call fcn.004301f0
add esp, 0x14
test eax, eax
jne 0x44ecc3
lea eax, [edi + 0x878]
push eax
call fcn.00430270
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.00430250
add esp, 4
push eax
lea eax, [esp + 0x20]
push eax
call fcn.00430260
add esp, 4
push eax
push edi
call fcn.0044dc30
mov ecx, dword [esp + 0x3c]
mov esi, eax
add dword [ebp], ecx
lea eax, [esp + 0x28]
push eax
call fcn.00430200
add esp, 0x1c
mov eax, esi
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret