Function at 0x421970
Capabilities:
Parse credit card information

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x2c
push ebx
push esi
mov eax, ecx
mov esi, edx
mov dword [ebp - 0xc], esi
push edi
test eax, eax
je 0x421c90
test esi, esi
je 0x421c90
cmp eax, esi
je 0x421c90
mov ebx, dword [ebp + 0xc]
xor edi, edi
add ebx, esi
mov dword [ebp - 0x1c], edi
mov dword [ebp - 0x28], ebx
xor edx, edx
mov bl, byte [eax]
mov ecx, 1
mov dword [ebp - 4], ecx
mov dword [ebp - 0x20], edi
mov dword [ebp - 8], edi
mov dword [ebp - 0x14], edx
mov dword [ebp - 0x24], esi
test bl, bl
je 0x421c7d
mov dword [ebp - 0x2c], ecx
nop dword [eax + eax]
inc eax
mov dword [ebp - 4], 0
cmp edi, dword [ebp + 0xc]
mov dword [ebp - 0x10], eax
cmove ecx, dword [ebp - 4]
mov dword [ebp - 0x18], eax
mov dword [ebp - 4], ecx
cmp bl, 0x3a
jne 0x421a62
test dl, dl
jns 0x421b17
cmp dword [ebp - 8], 0
jne 0x421b17
test ecx, ecx
je 0x421a57
mov ecx, esi
mov byte [esi], 0
sub ecx, edi
cmp ecx, dword [ebp - 0x24]
jb 0x421c90
mov eax, dword [ebp - 0x28]
cmp ecx, eax
ja 0x421c90
sub eax, ecx
inc eax
push eax
push ecx
call fcn.0045fcbe
push eax
call fcn.004022e0
add esp, 0xc
cmp edi, 4
jne 0x421a54
push edi
lea eax, [esi - 4]
push eax
push str.file
call fcn.0044c010
mov ecx, dword [ebp - 0x20]
add esp, 0xc
test eax, eax
cmove ecx, dword [ebp - 0x2c]
mov dword [ebp - 0x20], ecx
mov edx, dword [ebp - 0x14]
lea ecx, [edi + 1]
mov dword [ebp - 8], ecx
jmp 0x421b1a
cmp bl, 0x25
jne 0x421b49
test dl, 4
je 0x421b17
mov cl, byte [eax]
test cl, cl
je 0x421c7a
inc eax
mov dword [ebp - 0x10], eax
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x421a92
movzx eax, cl
sub ax, 0x30
jmp 0x421ab4
lea eax, [ecx - 0x41]
cmp al, 5
ja 0x421aa2
movzx eax, cl
sub ax, 0x37
jmp 0x421ab4
lea eax, [ecx - 0x61]
cmp al, 5
ja 0x421c58
movzx eax, cl
sub ax, 0x57
movzx ebx, ax
test bx, bx
js 0x421c58
mov eax, dword [ebp - 0x10]
shl bl, 4
mov cl, byte [eax]
test cl, cl
je 0x421c7a
inc eax
mov dword [ebp - 0x10], eax
mov dword [ebp - 0x18], eax
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x421ae7
movzx eax, cl
sub ax, 0x30
jmp 0x421b09
lea eax, [ecx - 0x41]
cmp al, 5
ja 0x421af7
movzx eax, cl
sub ax, 0x37
jmp 0x421b09
lea eax, [ecx - 0x61]
cmp al, 5
ja 0x421c58
movzx eax, cl
sub ax, 0x57
movzx eax, ax
test ax, ax
js 0x421c58
add bl, al
mov ecx, dword [ebp - 8]
mov eax, edx
and al, 0x82
cmp al, 0x80
jne 0x421ba1
cmp bl, 0x5c
jne 0x421b63
test ecx, ecx
jne 0x421b33
test edx, 0x100
je 0x421ba1
mov ecx, dword [ebp - 4]
test ecx, ecx
je 0x421ba4
cmp dword [ebp - 0x20], 0
je 0x421b45
cmp edi, 7
jae 0x421ba4
mov bl, 0x2f
jmp 0x421ba4
cmp bl, 0x3f
je 0x421b53
cmp bl, 0x23
jne 0x421b17
mov ecx, dword [ebp - 8]
test dl, 0x20
je 0x421b1a
or edx, 2
mov dword [ebp - 0x14], edx
jmp 0x421b1a
cmp bl, 0x2e
jne 0x421ba1
test edi, edi
je 0x421ba1
test dl, 8
jne 0x421ba1
push ecx
push edx
lea eax, [ebp - 0x1c]
push eax
lea eax, [ebp - 0x18]
push eax
push edi
lea edx, [esi - 1]
lea ecx, [ebp - 0xc]
call fcn.00421870
mov esi, dword [ebp - 0xc]
add esp, 0x14
mov edi, dword [ebp - 0x1c]
test eax, eax
mov eax, dword [ebp - 0x18]
jne 0x421c47
mov edx, dword [ebp - 0x14]
mov dword [ebp - 0x10], eax
mov ecx, dword [ebp - 4]
movzx eax, bl
mov dword [ebp - 0x1c], eax
add eax, 0xffffffe0
cmp eax, 0x5d
ja case.0x421bb9.33
movzx eax, byte [eax + 0x421ca4]
jmp dword [eax*4 + 0x421c9c]
lea eax, [ebx - 0x20]
cmp al, 0x5e
jbe 0x421c36
test dl, 2
jne 0x421c36
test dl, 0x10
je 0x421bd6
cmp bl, 0x20
jne 0x421c36
test dl, 8
je 0x421be0
cmp bl, 0x2e
je 0x421c36
test dl, 0x40
jne 0x421bea
cmp bl, 0x25
je 0x421c36
mov eax, dword [ebp + 0xc]
add eax, 0xfffffffd
cmp edi, eax
jb 0x421bfe
xor edx, edx
add edi, 2
mov dword [ebp - 4], edx
jmp 0x421c40
test ecx, ecx
je 0x421c31
mov byte [esi], 0x25
lea ecx, [esi + 1]
cmp bl, 0x10
jae 0x421c11
mov byte [ecx], 0x30
inc ecx
mov eax, dword [ebp - 0x28]
push 0x10
sub eax, ecx
push eax
push ecx
push dword [ebp - 0x1c]
call fcn.00458eb9
push eax
call fcn.004022e0
add esp, 0x14
add esi, 3
mov dword [ebp - 0xc], esi
add edi, 2
jmp 0x421c40
test ecx, ecx
je 0x421c40
mov byte [esi], bl
inc esi
mov dword [ebp - 0xc], esi
mov eax, dword [ebp - 0x10]
inc edi
mov dword [ebp - 0x1c], edi
mov bl, byte [eax]
mov ecx, dword [ebp - 4]
test bl, bl
je 0x421c7d
mov edx, dword [ebp - 0x14]
jmp 0x4219d0
xor edx, edx
mov ebx, dword [ebp + 0xc]
mov ecx, dword [ebp + 8]
test ecx, ecx
je 0x421c69
lea eax, [edi + 1]
mov dword [ecx], eax
lea ecx, [edi + 1]
xor eax, eax
pop edi
cmp ecx, ebx
pop esi
cmovbe eax, edx
pop ebx
mov esp, ebp
pop ebp
ret
mov ecx, dword [ebp - 4]
mov edx, dword [ebp - 4]
test ecx, ecx
je 0x421c5a
mov ebx, dword [ebp + 0xc]
cmp edi, ebx
jae 0x421c5d
mov byte [esi], 0
jmp 0x421c5d
push 0x80004005
call fcn.004022c0
nop
invalid