Function at 0x42ab1e
Capabilities:
Parse credit card information

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x20
push ebx
push esi
mov esi, dword [ebp + 0xc]
push edi
mov edi, dword [ebp + 8]
test edi, edi
jne 0x42ab3b
push 0x80004005
call fcn.004016a9
test esi, esi
je 0x42ab31
cmp edi, esi
je 0x42ab31
mov bl, byte [edi]
xor edx, edx
and dword [ebp - 0x1c], edx
and dword [ebp - 0x14], edx
test bl, bl
lea eax, [esi + 0x823]
mov dword [ebp - 8], edx
mov dword [ebp - 0xc], 1
mov dword [ebp - 0x10], 0x20
mov dword [ebp - 0x20], esi
mov dword [ebp - 0x18], eax
je 0x42ad93
inc edi
cmp edx, 0x823
mov dword [ebp + 8], edi
jne 0x42ab82
and dword [ebp - 0xc], 0
cmp bl, 0x3a
jne 0x42abfb
test byte [ebp - 0x10], 0x80
je 0x42ac4d
cmp dword [ebp - 0x14], 0
jne 0x42ac4d
cmp dword [ebp - 0xc], 0
je 0x42abf2
mov eax, esi
sub eax, edx
cmp eax, dword [ebp - 0x20]
mov byte [esi], 0
jb 0x42ab31
cmp eax, dword [ebp - 0x18]
ja 0x42ab31
mov ecx, dword [ebp - 0x18]
sub ecx, eax
inc ecx
push ecx
push eax
call dword [sym.imp.MSVCR80.dll__strlwr_s]
push eax
call fcn.0040147f
add esp, 0xc
cmp dword [ebp - 8], 4
jne 0x42abf2
push 4
lea eax, [esi - 4]
push eax
push 0x50f248
call dword [sym.imp.MSVCR80.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x42abf2
mov dword [ebp - 0x1c], 1
mov eax, dword [ebp - 8]
inc eax
mov dword [ebp - 0x14], eax
jmp 0x42ac4d
cmp bl, 0x25
jne 0x42ac39
test byte [ebp - 0x10], 4
je 0x42ac4d
mov al, byte [edi]
test al, al
je 0x42ad85
inc edi
mov cl, byte [edi]
test cl, cl
mov byte [ebp - 1], cl
je 0x42ad85
inc edi
mov dword [ebp + 8], edi
call fcn.0042a9f2
mov bx, ax
mov al, byte [ebp - 1]
shl bl, 4
call fcn.0042a9f2
add bl, al
jmp 0x42ac4d
cmp bl, 0x3f
je 0x42ac43
cmp bl, 0x23
jne 0x42ac4d
test byte [ebp - 0x10], 0x20
je 0x42ac4d
or dword [ebp - 0x10], 2
mov eax, dword [ebp - 0x10]
test al, al
jns 0x42acb7
test al, 2
jne 0x42acb7
cmp bl, 0x5c
jne 0x42ac7e
xor ecx, ecx
cmp dword [ebp - 0x14], ecx
jne 0x42ac6a
test ax, 0x100
je 0x42acb7
cmp dword [ebp - 0xc], ecx
je 0x42acb7
cmp dword [ebp - 0x1c], ecx
je 0x42ac7a
cmp dword [ebp - 8], 7
jae 0x42acb7
mov bl, 0x2f
jmp 0x42acb7
cmp bl, 0x2e
jne 0x42acb7
mov ecx, dword [ebp - 8]
test ecx, ecx
jbe 0x42acb7
test al, 8
jne 0x42acb7
push dword [ebp - 0x14]
lea edx, [ebp + 0xc]
push eax
lea eax, [ebp - 8]
push eax
lea eax, [ebp + 8]
push eax
lea eax, [esi - 1]
push edx
call fcn.0042aa54
mov esi, dword [ebp + 0xc]
mov edi, dword [ebp + 8]
add esp, 0x14
test eax, eax
jne 0x42ad78
movzx ecx, bl
cmp ecx, 0x40
jg 0x42acdf
cmp ecx, 0x3b
jge 0x42ad00
cmp ecx, 0x20
je 0x42ad00
cmp ecx, 0x21
jle 0x42acf6
cmp ecx, 0x26
jle 0x42ad00
cmp ecx, 0x2a
jle 0x42acf6
cmp ecx, 0x2c
jle 0x42ad00
jmp 0x42acf6
cmp ecx, 0x5b
jl 0x42acf6
cmp ecx, 0x5e
jle 0x42ad00
cmp ecx, 0x60
je 0x42ad00
lea eax, [ecx - 0x7b]
cmp eax, 2
jbe 0x42ad00
cmp bl, 0x20
jb 0x42ad00
cmp bl, 0x7e
jbe 0x42ad69
mov al, byte [ebp - 0x10]
test al, 2
jne 0x42ad69
test al, 0x10
je 0x42ad10
cmp bl, 0x20
jne 0x42ad69
test al, 8
je 0x42ad19
cmp bl, 0x2e
je 0x42ad69
test al, 0x40
jne 0x42ad22
cmp bl, 0x25
je 0x42ad69
cmp dword [ebp - 8], 0x820
jb 0x42ad2f
and dword [ebp - 0xc], 0
cmp dword [ebp - 0xc], 0
je 0x42ad63
cmp bl, 0x10
mov byte [esi], 0x25
lea eax, [esi + 1]
jae 0x42ad44
mov byte [eax], 0x30
inc eax
mov edx, dword [ebp - 0x18]
push 0x10
sub edx, eax
push edx
push eax
push ecx
call dword [sym.imp.MSVCR80.dll__ultoa_s]
push eax
call fcn.0040147f
add esp, 0x14
add esi, 3
mov dword [ebp + 0xc], esi
add dword [ebp - 8], 2
jmp 0x42ad75
cmp dword [ebp - 0xc], 0
je 0x42ad75
mov byte [esi], bl
inc esi
mov dword [ebp + 0xc], esi
inc dword [ebp - 8]
mov bl, byte [edi]
test bl, bl
mov edx, dword [ebp - 8]
jne 0x42ab72
cmp dword [ebp - 0xc], 0
je 0x42ad96
cmp edx, 0x823
jae 0x42ad96
mov byte [esi], 0
mov eax, dword [ebp + 0x10]
test eax, eax
pop edi
pop esi
pop ebx
je 0x42ada5
lea ecx, [edx + 1]
mov dword [eax], ecx
inc edx
cmp edx, 0x823
jbe 0x42adb2
and dword [ebp - 0xc], 0
mov eax, dword [ebp - 0xc]
leave
ret