Function at 0x40e260
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
sub esp, 0xdb4
mov eax, dword [0x4537b0]
xor eax, esp
mov dword [esp + 0xdb0], eax
push edi
mov edi, dword [esp + 0xdbc]
push 0x40
push str.70c2441db366d92ea7be1342b3bf629026ba92bb675f06e684bdd34511097434
push 0xffffffffffffffff
call fcn.004128e0
cmp eax, 0x26e831b8
je 0x40e2ab
xor al, al
pop edi
mov ecx, dword [esp + 0xdb0]
xor ecx, esp
call fcn.0043e366
add esp, 0xdb4
ret 8
push ebx
push 0x604
push 0
push 0x45cdf8
call fcn.0043e880
add esp, 0xc
push 0x400
lea eax, [esp + 0x13c]
push eax
mov ecx, edi
call fcn.004358e0
test al, al
je 0x40e301
mov bl, 0x23
lea ebx, [ebx]
cmp byte [esp + 0x138], bl
jne 0x40e301
push 0x400
lea ecx, [esp + 0x13c]
push ecx
mov ecx, edi
call fcn.004358e0
test al, al
jne 0x40e2e0
push esi
push pe_nt_image_headers32
push 0x45cdf8
mov ecx, edi
call fcn.004358e0
push pe_nt_image_headers32
push 0x45cef8
mov ecx, edi
call fcn.004358e0
push 0x80
lea edx, [esp + 0x940]
push edx
mov ecx, edi
call fcn.004358e0
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.004358e0
add esi, 0x36
cmp esi, 0x17a
jl 0x40e340
xor edi, edi
xor esi, esi
jmp 0x40e370
movsx edx, byte [esp + esi + 0x13c]
push edx
call fcn.00435050
test al, al
je 0x40e397
movsx ecx, byte [esp + esi + 0x13c]
inc esi
cmp esi, 2
lea eax, [edi + edi*4]
lea edi, [ecx + eax*2 - 0x30]
jl 0x40e370
push ebp
xor ebp, ebp
mov dword [esp + 0x18], edi
xor esi, esi
movsx edx, byte [esp + esi + 0x142]
push edx
call fcn.00435050
test al, al
je 0x40e3c8
movsx ecx, byte [esp + esi + 0x142]
inc esi
cmp esi, 3
lea eax, [ebp + ebp*4]
lea ebp, [ecx + eax*2 - 0x30]
jl 0x40e3a0
xor ebx, ebx
mov dword [esp + 0x14], ebp
xor esi, esi
movsx edx, byte [esp + esi + 0x145]
push edx
call fcn.00435050
test al, al
je 0x40e3f7
movsx ecx, byte [esp + esi + 0x145]
inc esi
cmp esi, 3
lea eax, [ebx + ebx*4]
lea ebx, [ecx + eax*2 - 0x30]
jl 0x40e3d0
xor edi, edi
xor esi, esi
jmp 0x40e400
movsx edx, byte [esp + esi + 0x148]
push edx
call fcn.00435050
test al, al
je 0x40e427
movsx ecx, byte [esp + esi + 0x148]
inc esi
cmp esi, 2
lea eax, [edi + edi*4]
lea edi, [ecx + eax*2 - 0x30]
jl 0x40e400
cmp ebp, 0x100
jg 0x40e669
cmp ebx, 0x100
jg 0x40e669
mov ebp, 0x452228
xor esi, esi
push 8
lea edx, [esp + 0x44]
push edx
push ebp
call fcn.00435120
push 8
lea eax, [esp + 0x44]
push eax
lea ecx, [esp + 0x152]
push ecx
call fcn.00434f50
test eax, eax
je 0x40e669
add esi, 8
add ebp, 8
cmp esi, 0x8f0
jb 0x40e446
xor esi, esi
nop
lea edx, [esp + 0x40]
push edx
call fcn.00434c10
mov eax, 0x45cdf8
lea edx, [eax + 1]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e492
push 1
sub eax, edx
push eax
push 0x45cdf8
lea eax, [esp + 0x4c]
push eax
call fcn.00434c50
push 1
lea ecx, [esp + 0x20]
push ecx
lea edx, [esp + 0x48]
push edx
call fcn.00434d10
mov eax, dword [esp + 0x1c]
cmp eax, dword [esi + 0x4521e8]
jne 0x40e4da
mov ecx, dword [esp + 0x20]
cmp ecx, dword [esi + 0x4521ec]
je 0x40e669
add esi, 8
cmp esi, 0x40
jb 0x40e480
mov esi, dword [esp + 0x18]
push esi
lea edx, [esp + 0x14e]
push edx
push 0x45cff8
call fcn.0043f1d0
mov ebp, dword [esp + 0x20]
push ebp
lea esi, [esp + esi + 0x15a]
push esi
push 0x45d2f8
call fcn.0043f1d0
push ebx
add esi, ebp
push esi
push 0x45d1f8
call fcn.0043f1d0
push edi
add esi, ebx
push esi
push 0x45d0f8
call fcn.0043f1d0
push 0xa
push 0
add edi, esi
push edi
call fcn.0043f77c
mov dword [0x45d3f8], eax
mov eax, 0x45cef8
add esp, 0x3c
lea ecx, [eax + 1]
mov dl, byte [eax]
inc eax
test dl, dl
jne 0x40e548
sub eax, ecx
push eax
push 0x45cef8
push 0xffffffffffffffff
call fcn.004128e0
mov ecx, 0x45cdf8
lea esi, [ecx + 1]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e566
sub ecx, esi
push ecx
push 0x45cdf8
push eax
call fcn.004128e0
mov ecx, 0x45cff8
lea esi, [ecx + 1]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e583
sub ecx, esi
push ecx
push 0x45cff8
push eax
call fcn.004128e0
mov ecx, 0x45d2f8
lea esi, [ecx + 1]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e5a0
sub ecx, esi
push ecx
push 0x45d2f8
push eax
call fcn.004128e0
mov ecx, 0x45d1f8
lea esi, [ecx + 1]
lea ecx, [ecx]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e5c0
sub ecx, esi
push ecx
push 0x45d1f8
push eax
call fcn.004128e0
mov ecx, 0x45d0f8
lea esi, [ecx + 1]
lea ecx, [ecx]
mov dl, byte [ecx]
inc ecx
test dl, dl
jne 0x40e5e0
sub ecx, esi
push ecx
push 0x45d0f8
push eax
call fcn.004128e0
cmp eax, dword [0x45d3f8]
jne 0x40e669
cmp byte [0x45cef8], 0
je 0x40e7c2
mov ebp, 0x45cf01
mov dword [esp + 0x14], ebp
push 9
push str.Version:
lea ebx, [ebp - 9]
push ebx
call fcn.00434f50
test eax, eax
je 0x40e63c
push 9
push str.VersMax:
push ebx
call fcn.00434f50
test eax, eax
jne 0x40e6f5
cmp byte [ebp], 0
mov byte [esp + 0x13], 0
mov esi, ebp
je 0x40e669
lea esp, [esp]
cmp byte [esi - 1], 0x20
jne 0x40e663
movsx eax, byte [esi]
push eax
call fcn.00435050
test al, al
jne 0x40e686
inc esi
cmp byte [esi], 0
jne 0x40e650
xor al, al
mov ecx, dword [esp + 0xdc0]
pop ebp
pop esi
pop ebx
pop edi
xor ecx, esp
call fcn.0043e366
add esp, 0xdb4
ret 8
push esi
call fcn.0043f49f
push 0x2e
push esi
mov edi, eax
call fcn.0043f3d0
add esp, 0xc
test eax, eax
je 0x40e6b0
inc eax
cmp byte [eax], 0x2a
je 0x40e6b0
push eax
call fcn.0043f49f
add esp, 4
mov ecx, eax
jmp 0x40e6b3
or ecx, 0xffffffff
cmp edi, 3
jne 0x40e6d7
cmp ecx, 0xffffffff
je 0x40e6d3
mov eax, 0x66666667
imul ecx
sar edx, 2
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp eax, 9
jne 0x40e6d7
mov al, 1
jmp 0x40e6db
mov al, byte [esp + 0x13]
cmp byte [ebp - 5], 0x4d
jne 0x40e6ed
cmp edi, 3
jg 0x40e6f5
jne 0x40e6ed
cmp ecx, 0x5a
jge 0x40e6f5
test al, al
je 0x40e669
push 9
push str.DateMax:
push ebx
call fcn.00434f50
test eax, eax
jne 0x40e7af
mov esi, ebp
cmp byte [ebp], al
je 0x40e669
cmp byte [esi - 1], 0x20
jne 0x40e728
movsx ecx, byte [esi]
push ecx
call fcn.00435050
test al, al
jne 0x40e733
inc esi
cmp byte [esi], 0
jne 0x40e715
jmp 0x40e669
mov edi, 1
push esi
mov ebx, edi
call fcn.0043f49f
push 0x2e
push esi
mov ebp, eax
call fcn.0043f3d0
add esp, 0xc
test eax, eax
je 0x40e777
lea esi, [eax + 1]
push esi
call fcn.0043f49f
push 0x2e
push esi
mov edi, eax
call fcn.0043f3d0
add esp, 0xc
test eax, eax
je 0x40e777
inc eax
push eax
call fcn.0043f49f
add esp, 4
mov ebx, eax
lea ecx, [esp + 0x1c]
call fcn.004361c0
lea ecx, [esp + 0x1c]
call fcn.00436480
mov eax, dword [esp + 0x1c]
cmp ebp, eax
ja 0x40e7af
jne 0x40e669
mov eax, dword [esp + 0x20]
cmp edi, eax
ja 0x40e7af
jne 0x40e669
cmp ebx, dword [esp + 0x24]
jb 0x40e669
mov ebp, dword [esp + 0x14]
inc ebp
cmp byte [ebp - 9], 0
mov dword [esp + 0x14], ebp
jne 0x40e613
cmp byte [esp + 0xdcc], 0
je 0x40e903
mov eax, 0x45cef8
lea edx, [eax + 1]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e7d8
push 0x45d2f8
push str.70c2441db366d92ea7be1342b3bf629026ba92bb675f06e684bdd34511097434
sub eax, edx
push eax
push 0x45cef8
call fcn.00415b70
test eax, eax
je 0x40e669
xor eax, eax
mov cl, byte [eax + 0x45cdf8]
mov byte [esp + eax + 0x540], cl
inc eax
test cl, cl
jne 0x40e800
mov eax, 0x45cff8
mov edx, eax
lea esp, [esp]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e820
lea edi, [esp + 0x540]
sub eax, edx
dec edi
mov cl, byte [edi + 1]
inc edi
test cl, cl
jne 0x40e831
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 0x40e850
mov cl, byte [esp + eax + 0x540]
mov byte [esp + eax + 0x9c0], cl
inc eax
test cl, cl
jne 0x40e850
lea eax, [esp + 0x540]
lea edx, [eax + 1]
lea ecx, [ecx]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x40e870
push 0x45d1f8
sub eax, edx
push str.70c2441db366d92ea7be1342b3bf629026ba92bb675f06e684bdd34511097434
mov esi, eax
push esi
lea edx, [esp + 0x54c]
push edx
call fcn.00415b70
test eax, eax
je 0x40e669
xor eax, eax
lea ecx, [ecx]
mov cl, byte [esp + eax + 0x9c0]
mov byte [esp + eax + 0x540], cl
inc eax
test cl, cl
jne 0x40e8a0
lea eax, [esp + 0x40]
push eax
push 0x45d0f8
push esi
lea ecx, [esp + 0x54c]
push ecx
call fcn.00415970
xor eax, eax
lea ecx, [ecx]
mov cl, byte [esp + eax + 0x9c0]
mov byte [esp + eax + 0x540], cl
inc eax
test cl, cl
jne 0x40e8d0
lea edx, [esp + 0x40]
push edx
push 0x45cff8
push esi
lea eax, [esp + 0x54c]
push eax
call fcn.00415b70
test eax, eax
je 0x40e669
mov al, 1
jmp 0x40e66b