Function at 0x40e280
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
sub esp, 0xdb4
mov eax, dword [0x4537c0]
xor eax, esp
mov dword [esp + 0xdb0], eax
push edi
mov edi, dword [esp + 0xdbc]
push 0x40
push str.70c2441db366d92ea7be1342b3bf629026ba92bb675f06e684bdd34511097434
push 0xffffffffffffffff
call fcn.004129f0
cmp eax, 0x26e831b8
je 0x40e2cb
xor al, al
pop edi
mov ecx, dword [esp + 0xdb0]
xor ecx, esp
call fcn.0043e556
add esp, 0xdb4
ret 8
push ebx
push 0x604
push 0
push 0x45cdf8
call fcn.0043ea70
add esp, 0xc
push 0x400
lea eax, [esp + 0x13c]
push eax
mov ecx, edi
call fcn.00435a70
test al, al
je 0x40e321
mov bl, 0x23
lea ebx, [ebx]
cmp byte [esp + 0x138], bl
jne 0x40e321
push 0x400
lea ecx, [esp + 0x13c]
push ecx
mov ecx, edi
call fcn.00435a70
test al, al
jne 0x40e300
push esi
push pe_nt_image_headers32
push 0x45cdf8
mov ecx, edi
call fcn.00435a70
push pe_nt_image_headers32
push 0x45cef8
mov ecx, edi
call fcn.00435a70
push 0x80
lea edx, [esp + 0x940]
push edx
mov ecx, edi
call fcn.00435a70
xor esi, esi
lea ebx, [ebx]
mov eax, 0x400
sub eax, esi
push eax
lea ecx, [esp + esi + 0x140]
push ecx
mov ecx, edi
call fcn.00435a70
add esi, 0x36
cmp esi, 0x17a
jl 0x40e360
xor edi, edi
xor esi, esi
jmp 0x40e390
movsx edx, byte [esp + esi + 0x13c]
push edx
call fcn.00435210
test al, al
je 0x40e3b7
movsx ecx, byte [esp + esi + 0x13c]
inc esi
cmp esi, 2
lea eax, [edi + edi*4]
lea edi, [ecx + eax*2 - 0x30]
jl 0x40e390
push ebp
xor ebp, ebp
mov dword [esp + 0x10], edi
xor esi, esi
movsx edx, byte [esp + esi + 0x142]
push edx
call fcn.00435210
test al, al
je 0x40e3e8
movsx ecx, byte [esp + esi + 0x142]
inc esi
cmp esi, 3
lea eax, [ebp + ebp*4]
lea ebp, [ecx + eax*2 - 0x30]
jl 0x40e3c0
xor ebx, ebx
mov dword [esp + 0x18], ebp
xor esi, esi
movsx edx, byte [esp + esi + 0x145]
push edx
call fcn.00435210
test al, al
je 0x40e417
movsx ecx, byte [esp + esi + 0x145]
inc esi
cmp esi, 3
lea eax, [ebx + ebx*4]
lea ebx, [ecx + eax*2 - 0x30]
jl 0x40e3f0
xor edi, edi
xor esi, esi
jmp 0x40e420
movsx edx, byte [esp + esi + 0x148]
push edx
call fcn.00435210
test al, al
je 0x40e447
movsx ecx, byte [esp + esi + 0x148]
inc esi
cmp esi, 2
lea eax, [edi + edi*4]
lea edi, [ecx + eax*2 - 0x30]
jl 0x40e420
cmp ebp, 0x100
jg 0x40e67f
cmp ebx, 0x100
jg 0x40e67f
mov ebp, 0x452228
xor esi, esi
push 8
lea edx, [esp + 0x44]
push edx
push ebp
call fcn.004352e0
push 8
lea eax, [esp + 0x44]
push eax
lea ecx, [esp + 0x152]
push ecx
call fcn.00435110
test eax, eax
je 0x40e67f
add esi, 8
add ebp, 8
cmp esi, 0x908
jb 0x40e466
xor esi, esi
nop
lea edx, [esp + 0x40]
push edx
call fcn.00434da0
mov eax, 0x45cdf8
lea edx, [eax + 1]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e4b2
push 1
sub eax, edx
push eax
push 0x45cdf8
lea eax, [esp + 0x4c]
push eax
call fcn.00434de0
push 1
lea ecx, [esp + 0x20]
push ecx
lea edx, [esp + 0x48]
push edx
call fcn.00434ea0
mov eax, dword [esp + 0x1c]
cmp eax, dword [esi + 0x4521e8]
jne 0x40e4fa
mov ecx, dword [esp + 0x20]
cmp ecx, dword [esi + 0x4521ec]
je 0x40e67f
add esi, 8
cmp esi, 0x40
jb 0x40e4a0
mov esi, dword [esp + 0x10]
push esi
lea edx, [esp + 0x14e]
push edx
push 0x45cff8
call fcn.0043f3c0
mov ebp, dword [esp + 0x24]
push ebp
lea esi, [esp + esi + 0x15a]
push esi
push 0x45d2f8
call fcn.0043f3c0
push ebx
add esi, ebp
push esi
push 0x45d1f8
call fcn.0043f3c0
push edi
add esi, ebx
push esi
push 0x45d0f8
call fcn.0043f3c0
push 0xa
push 0
add edi, esi
push edi
call fcn.0043f96c
mov dword [0x45d3f8], eax
mov eax, 0x45cef8
add esp, 0x3c
lea ecx, [eax + 1]
mov dl, byte [eax]
inc eax
test dl, dl
jne 0x40e568
sub eax, ecx
push eax
push 0x45cef8
push 0xffffffffffffffff
call fcn.004129f0
mov ecx, 0x45cdf8
lea esi, [ecx + 1]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e586
sub ecx, esi
push ecx
push 0x45cdf8
push eax
call fcn.004129f0
mov ecx, 0x45cff8
lea esi, [ecx + 1]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e5a3
sub ecx, esi
push ecx
push 0x45cff8
push eax
call fcn.004129f0
mov ecx, 0x45d2f8
lea esi, [ecx + 1]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e5c0
sub ecx, esi
push ecx
push 0x45d2f8
push eax
call fcn.004129f0
mov ecx, 0x45d1f8
lea esi, [ecx + 1]
lea ecx, [ecx]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e5e0
sub ecx, esi
push ecx
push 0x45d1f8
push eax
call fcn.004129f0
mov ecx, 0x45d0f8
lea esi, [ecx + 1]
lea ecx, [ecx]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e600
sub ecx, esi
push ecx
push 0x45d0f8
push eax
call fcn.004129f0
cmp eax, dword [0x45d3f8]
jne 0x40e67f
cmp byte [0x45cef8], 0
je 0x40e810
mov esi, 0x45cf01
mov dword [esp + 0x10], esi
push 9
push str.Version:
lea edi, [esi - 9]
push edi
call fcn.00435110
test eax, eax
je 0x40e65c
push 9
push str.VersMax:
push edi
call fcn.00435110
test eax, eax
jne 0x40e735
cmp byte [esi], 0
mov byte [esp + 0x17], 0
je 0x40e67f
cmp byte [esi - 1], 0x20
jne 0x40e679
movsx eax, byte [esi]
push eax
call fcn.00435210
test al, al
jne 0x40e69c
inc esi
cmp byte [esi], 0
jne 0x40e666
xor al, al
mov ecx, dword [esp + 0xdc0]
pop ebp
pop esi
pop ebx
pop edi
xor ecx, esp
call fcn.0043e556
add esp, 0xdb4
ret 8
push esi
call fcn.0043f68f
push 0x2e
push esi
mov ebx, eax
call fcn.0043f5c0
mov esi, eax
add esp, 0xc
test esi, esi
je 0x40e6ec
cmp byte [esi + 1], 0x2a
lea edi, [esi + 1]
je 0x40e6ec
push edi
call fcn.0043f68f
movsx ecx, byte [edi]
add esp, 4
push ecx
mov ebp, eax
call fcn.00435210
test al, al
je 0x40e6ef
movsx edx, byte [esi + 2]
push edx
call fcn.00435210
test al, al
jne 0x40e6ef
lea ebp, [ebp + ebp*4]
add ebp, ebp
jmp 0x40e6ef
or ebp, 0xffffffff
cmp ebx, 3
jne 0x40e713
cmp ebp, 0xffffffff
je 0x40e70f
mov eax, 0x66666667
imul ebp
sar edx, 2
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp eax, 9
jne 0x40e713
mov al, 1
jmp 0x40e717
mov al, byte [esp + 0x17]
mov ecx, dword [esp + 0x10]
cmp byte [ecx - 5], 0x4d
jne 0x40e72d
cmp ebx, 3
jg 0x40e735
jne 0x40e72d
cmp ebp, 0x5d
jge 0x40e735
test al, al
je 0x40e67f
mov esi, dword [esp + 0x10]
push 9
push str.DateMax:
lea eax, [esi - 9]
push eax
call fcn.00435110
test eax, eax
jne 0x40e7fa
cmp byte [esi], al
je 0x40e67f
lea esp, [esp]
cmp byte [esi - 1], 0x20
jne 0x40e773
movsx edx, byte [esi]
push edx
call fcn.00435210
test al, al
jne 0x40e77e
inc esi
cmp byte [esi], 0
jne 0x40e760
jmp 0x40e67f
mov edi, 1
push esi
mov ebx, edi
call fcn.0043f68f
push 0x2e
push esi
mov ebp, eax
call fcn.0043f5c0
add esp, 0xc
test eax, eax
je 0x40e7c2
lea esi, [eax + 1]
push esi
call fcn.0043f68f
push 0x2e
push esi
mov edi, eax
call fcn.0043f5c0
add esp, 0xc
test eax, eax
je 0x40e7c2
inc eax
push eax
call fcn.0043f68f
add esp, 4
mov ebx, eax
lea ecx, [esp + 0x1c]
call fcn.00436350
lea ecx, [esp + 0x1c]
call fcn.00436610
mov eax, dword [esp + 0x1c]
cmp ebp, eax
ja 0x40e7fa
jne 0x40e67f
mov eax, dword [esp + 0x20]
cmp edi, eax
ja 0x40e7fa
jne 0x40e67f
cmp ebx, dword [esp + 0x24]
jb 0x40e67f
mov eax, dword [esp + 0x10]
inc eax
cmp byte [eax - 9], 0
mov dword [esp + 0x10], eax
je 0x40e810
mov esi, eax
jmp 0x40e633
cmp byte [esp + 0xdcc], 0
je 0x40e953
mov eax, 0x45cef8
lea edx, [eax + 1]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e826
push 0x45d2f8
push str.70c2441db366d92ea7be1342b3bf629026ba92bb675f06e684bdd34511097434
sub eax, edx
push eax
push 0x45cef8
call fcn.00415c80
test eax, eax
je 0x40e67f
xor eax, eax
mov edi, edi
mov cl, byte [eax + 0x45cdf8]
mov byte [esp + eax + 0x540], cl
inc eax
test cl, cl
jne 0x40e850
mov eax, 0x45cff8
mov edx, eax
lea esp, [esp]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e870
lea edi, [esp + 0x540]
sub eax, edx
dec edi
mov cl, byte [edi + 1]
inc edi
test cl, cl
jne 0x40e881
mov ecx, eax
shr ecx, 2
mov esi, edx
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
xor eax, eax
jmp 0x40e8a0
mov cl, byte [esp + eax + 0x540]
mov byte [esp + eax + 0x9c0], cl
inc eax
test cl, cl
jne 0x40e8a0
lea eax, [esp + 0x540]
lea edx, [eax + 1]
lea ecx, [ecx]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e8c0
push 0x45d1f8
sub eax, edx
mov esi, eax
push str.70c2441db366d92ea7be1342b3bf629026ba92bb675f06e684bdd34511097434
push esi
lea eax, [esp + 0x54c]
push eax
call fcn.00415c80
test eax, eax
je 0x40e67f
xor eax, eax
lea ecx, [ecx]
mov cl, byte [esp + eax + 0x9c0]
mov byte [esp + eax + 0x540], cl
inc eax
test cl, cl
jne 0x40e8f0
lea ecx, [esp + 0x40]
push ecx
push 0x45d0f8
push esi
lea edx, [esp + 0x54c]
push edx
call fcn.00415a80
xor eax, eax
lea ecx, [ecx]
mov cl, byte [esp + eax + 0x9c0]
mov byte [esp + eax + 0x540], cl
inc eax
test cl, cl
jne 0x40e920
lea eax, [esp + 0x40]
push eax
push 0x45cff8
push esi
lea ecx, [esp + 0x54c]
push ecx
call fcn.00415c80
test eax, eax
je 0x40e67f
mov al, 1
jmp 0x40e681