Function at 0x657cba
Capabilities:
Parse credit card information

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x28
mov eax, dword [0x7fd678]
push ebx
push esi
xor esi, esi
mov cl, byte [eax]
mov dword [ebp - 8], esi
mov dword [ebp - 4], esi
mov dword [ebp - 0x18], esi
mov dword [ebp - 0x14], esi
push edi
lea edi, [eax + 1]
mov dword [0x7fd678], edi
cmp cl, 0x41
jg 0x657e63
je 0x6582d6
test cl, cl
je 0x657e49
cmp cl, 0x2f
jle case.default.0x6581cc
cmp cl, 0x31
jle 0x657d71
cmp cl, 0x39
jg case.default.0x6581cc
movsx eax, byte [edi - 1]
lea eax, [eax*8 + 0x762778]
push eax
lea ecx, [ebp - 8]
call fcn.00654bcf
cmp dword [ebp - 8], 0
je 0x657d5e
lea eax, [ebp - 0x20]
mov dword [ebp - 0x20], str.operator
push eax
lea ecx, [ebp - 0x28]
mov dword [ebp - 0x1c], 8
call fcn.00654995
lea ecx, [ebp - 8]
push ecx
lea ecx, [ebp - 0x20]
push ecx
mov ecx, eax
call fcn.00654cf9
mov eax, dword [ebp - 0x20]
mov dword [ebp - 8], eax
mov eax, dword [ebp - 0x1c]
mov dword [ebp - 4], eax
mov eax, dword [ebp + 8]
mov ecx, dword [ebp - 8]
mov dword [eax], ecx
mov ecx, dword [ebp - 4]
mov dword [eax + 4], ecx
pop edi
pop esi
pop ebx
leave
ret
mov ebx, esi
mov dword [ebp - 0xc], esi
mov dword [ebp - 0x10], ebx
cmp byte [ebp + 0xc], bl
je 0x657dea
lea eax, [ebp - 0x20]
push eax
call fcn.006590a8
push eax
lea eax, [ebp - 0x18]
push 0x3c
push eax
call fcn.00654c8a
add esp, 0x10
lea ecx, [ebp - 0x10]
push eax
call fcn.00654db7
lea ecx, [ebp - 0x10]
call fcn.00657aad
cmp al, 0x3e
jne 0x657db5
push 0x20
lea ecx, [ebp - 0x10]
call fcn.00654e0e
push 0x3e
lea ecx, [ebp - 0x10]
call fcn.00654e0e
mov eax, dword [ebp + 0x10]
test eax, eax
je 0x657dc9
mov byte [eax], 1
mov edi, dword [0x7fd678]
cmp byte [edi], bl
jne 0x657de0
mov eax, dword [ebp + 8]
mov ecx, dword [ebp - 0x10]
mov dword [eax], ecx
mov ecx, dword [ebp - 0xc]
jmp 0x657d69
mov ebx, dword [ebp - 0x10]
inc edi
mov dword [0x7fd678], edi
push esi
lea eax, [ebp - 0x20]
push esi
push eax
call fcn.00659eac
add esp, 0xc
mov ecx, dword [eax]
mov eax, dword [eax + 4]
mov dword [ebp - 8], ecx
mov dword [ebp - 4], eax
mov dword [0x7fd678], edi
test ecx, ecx
je 0x657e30
cmp byte [edi - 1], 0x31
jne 0x657e30
lea eax, [ebp - 8]
push eax
lea eax, [ebp - 0x20]
push 0x7e
push eax
call fcn.00654c8a
add esp, 0xc
mov ecx, dword [eax]
mov eax, dword [eax + 4]
mov dword [ebp - 8], ecx
mov dword [ebp - 4], eax
test ebx, ebx
je 0x657d5e
lea eax, [ebp - 0x10]
push eax
lea ecx, [ebp - 8]
call fcn.00654db7
jmp 0x657d5e
lea eax, [edi - 1]
mov dword [0x7fd678], eax
mov ecx, dword [ebp + 8]
push 1
call fcn.00654a03
mov eax, dword [ebp + 8]
jmp 0x657d6c
cmp cl, 0x42
je 0x6582d3
jle case.default.0x6581cc
cmp cl, 0x5a
jle 0x6582d6
cmp cl, 0x5f
jne case.default.0x6581cc
movsx eax, byte [edi]
lea ecx, [edi + 1]
mov dword [0x7fd678], ecx
cmp eax, 0x4f
jg 0x657fa6
cmp eax, 0x44
jge 0x6582a2
cmp eax, 0x39
jg 0x657f22
je 0x657ef5
test eax, eax
je 0x657eea
cmp eax, 0x2f
jle case.default.0x6581cc
cmp eax, 0x36
jle 0x657eda
cmp eax, 0x38
jg case.default.0x6581cc
movsx eax, byte [ecx - 1]
lea eax, [eax*8 + 0x762898]
mov ecx, dword [ebp + 8]
push eax
call fcn.00654995
jmp 0x657e5b
movsx eax, byte [ecx - 1]
lea eax, [eax*8 + 0x762898]
jmp 0x657d1a
mov dword [0x7fd678], edi
jmp 0x657e51
movsx eax, byte [ecx - 1]
lea ecx, [ebp - 0x18]
lea eax, [eax*8 + 0x762898]
push eax
call fcn.00654995
mov edx, dword [ebp - 0x14]
or edx, 0x8000
mov eax, dword [ebp + 8]
mov ecx, dword [ebp - 0x18]
mov dword [eax], ecx
mov dword [eax + 4], edx
jmp 0x657d6c
cmp eax, 0x3f
je 0x657f53
cmp eax, 0x40
jle case.default.0x6581cc
cmp eax, 0x42
jle 0x6582a2
push 1
lea eax, [ebp - 0x18]
push esi
push eax
call fcn.00658f7e
mov edx, dword [ebp - 0x14]
add esp, 0xc
or edx, 0x1000
jmp 0x657f12
mov dl, byte [ecx]
lea eax, [ecx + 1]
mov dword [0x7fd678], eax
test dl, dl
je 0x657f9b
mov edi, dword [ebp + 8]
cmp dl, 0x30
je 0x657f74
mov dword [edi + 4], esi
mov byte [edi + 4], 2
mov dword [edi], esi
jmp 0x657f94
push esi
lea eax, [ebp - 0x18]
push 1
push eax
call fcn.00658f7e
mov ecx, dword [ebp - 0x14]
add esp, 0xc
mov eax, dword [ebp - 0x18]
or ecx, 0x1000
mov dword [edi], eax
mov dword [edi + 4], ecx
mov eax, edi
jmp 0x657d6c
mov dword [0x7fd678], ecx
jmp 0x657e51
cmp eax, 0x54
jg 0x65818b
cmp eax, 0x53
jge 0x6582a2
sub eax, 0x50
je 0x65813b
sub eax, 1
je 0x657d23
sub eax, 1
jne case.default.0x6581cc
movsx eax, byte [ecx - 1]
lea ecx, [ebp - 8]
lea eax, [eax*8 + 0x762860]
push eax
call fcn.00654bcf
mov eax, dword [0x7fd678]
mov al, byte [eax]
test al, al
jne 0x658004
push 1
push dword [ebp + 8]
lea ecx, [ebp - 8]
call fcn.00654d3d
jmp 0x657e5b
movsx eax, al
sub eax, 0x30
js case.default.0x6581cc
cmp eax, 5
jae case.default.0x6581cc
lea eax, [eax*8 + 0x762ba0]
push eax
lea ecx, [ebp - 0x18]
call fcn.00654bcf
mov eax, dword [0x7fd678]
mov cl, byte [eax]
inc eax
mov dword [0x7fd678], eax
cmp cl, 0x30
je 0x658101
cmp cl, 0x31
je 0x658055
jle 0x65804f
cmp cl, 0x34
jle 0x658177
dec eax
jmp 0x657e4c
mov eax, dword [ebp - 8]
lea ecx, [ebp - 0x10]
mov dword [ebp - 0x10], eax
mov eax, dword [ebp - 4]
mov dword [ebp - 0xc], eax
lea eax, [ebp - 0x18]
push eax
call fcn.00654db7
lea eax, [ebp - 0x20]
push eax
call fcn.00658db5
pop ecx
push 0x2c
lea ecx, [ebp - 0x18]
push ecx
mov ecx, eax
call fcn.00654d1b
push eax
lea ecx, [ebp - 0x10]
call fcn.00654db7
lea eax, [ebp - 0x20]
push eax
call fcn.00658db5
pop ecx
push 0x2c
lea ecx, [ebp - 0x18]
push ecx
mov ecx, eax
call fcn.00654d1b
push eax
lea ecx, [ebp - 0x10]
call fcn.00654db7
lea eax, [ebp - 0x20]
push eax
call fcn.00658db5
pop ecx
push 0x2c
lea ecx, [ebp - 0x18]
push ecx
mov ecx, eax
call fcn.00654d1b
push eax
lea ecx, [ebp - 0x10]
call fcn.00654db7
lea eax, [ebp - 0x20]
push esi
push eax
call fcn.006570bb
pop ecx
pop ecx
push 0x29
lea ecx, [ebp - 0x18]
push ecx
mov ecx, eax
call fcn.00654d1b
push eax
lea ecx, [ebp - 0x10]
call fcn.00654db7
push 0x27
push dword [ebp + 8]
lea ecx, [ebp - 0x10]
call fcn.00654d1b
jmp 0x657e5b
lea eax, [ebp - 0x20]
push esi
push eax
call fcn.00656d7a
mov eax, dword [ebp - 0x20]
pop ecx
pop ecx
mov dword [ebp - 0x10], eax
lea ecx, [ebp - 0x10]
mov eax, dword [ebp - 0x1c]
push 0x20
mov dword [ebp - 0xc], eax
call fcn.00654e0e
lea eax, [ebp - 8]
push eax
lea eax, [ebp - 0x28]
push eax
lea ecx, [ebp - 0x10]
call fcn.00654cf9
lea ecx, [ebp - 0x18]
push ecx
mov ecx, eax
jmp 0x65817e
movsx eax, byte [ecx - 1]
lea ecx, [ebp - 8]
lea eax, [eax*8 + 0x762860]
push eax
call fcn.00654bcf
push esi
lea eax, [ebp - 0x28]
push esi
push eax
call fcn.00657cba
add esp, 0xc
mov ecx, dword [eax]
mov eax, dword [eax + 4]
mov dword [ebp - 0x18], ecx
mov dword [ebp - 0x14], eax
test ecx, ecx
je 0x658177
test eax, 0x400
jne case.default.0x6581cc
lea eax, [ebp - 0x18]
push eax
lea ecx, [ebp - 8]
push dword [ebp + 8]
call fcn.00654cf9
jmp 0x657e5b
cmp eax, 0x56
jle 0x6582b2
cmp eax, 0x57
jle case.default.0x6581cc
cmp eax, 0x59
jle 0x6582a2
cmp eax, 0x5f
jne case.default.0x6581cc
movsx eax, byte [ecx]
inc ecx
sub eax, 0x41
mov dword [0x7fd678], ecx
cmp eax, 0xc
ja case.default.0x6581cc
movzx eax, byte [eax + 0x658316]
jmp dword [eax*4 + 0x65830a]
movsx eax, byte [ecx - 1]
lea eax, [eax*8 + 0x762928]
jmp 0x657ecf
movsx eax, byte [ecx - 1]
lea ecx, [ebp - 0x18]
lea eax, [eax*8 + 0x762928]
push eax
call fcn.00654995
mov eax, dword [0x7fd678]
cmp byte [eax], 0x3f
lea eax, [ebp - 0x28]
push eax
jne 0x658226
call fcn.00656e51
pop ecx
push eax
lea ecx, [ebp - 0x18]
call fcn.00654db7
mov eax, dword [0x7fd678]
cmp byte [eax], 0x40
jne 0x658235
inc eax
mov dword [0x7fd678], eax
jmp 0x658235
call fcn.00659060
pop ecx
push eax
lea ecx, [ebp - 0x18]
call fcn.00654db7
lea eax, [ebp - 0x20]
mov dword [ebp - 0x20], 0x763258
push eax
lea ecx, [ebp - 0x18]
mov dword [ebp - 0x1c], 2
call fcn.00654d5f
mov eax, dword [ebp + 8]
mov ecx, dword [ebp - 0x18]
mov dword [eax], ecx
mov ecx, dword [ebp - 0x14]
jmp 0x657d69
movsx eax, byte [ecx - 1]
lea ecx, [ebp - 0x18]
lea eax, [eax*8 + 0x762928]
push eax
call fcn.00654995
jmp 0x658289
cmp al, 0x40
je 0x658299
inc ecx
mov dword [0x7fd678], ecx
lea ecx, [ebp - 0x18]
push eax
call fcn.00654e0e
mov ecx, dword [0x7fd678]
mov al, byte [ecx]
test al, al
jne 0x658275
cmp al, 0x40
jne 0x65824f
inc ecx
mov dword [0x7fd678], ecx
jmp 0x65824f
movsx eax, byte [ecx - 1]
lea eax, [eax*8 + 0x762860]
jmp 0x657ecf
movsx eax, byte [ecx - 1]
lea eax, [eax*8 + 0x762860]
jmp 0x657d1a
mov eax, dword [ebp + 8]
mov dword [eax + 4], esi
mov byte [eax + 4], 2
mov dword [eax], esi
jmp 0x657d6c
xor esi, esi
inc esi
movsx eax, byte [edi - 1]
lea ecx, [ebp - 8]
lea eax, [eax*8 + 0x762740]
push eax
call fcn.00654bcf
test esi, esi
je 0x657d23
cmp dword [ebp - 8], 0
je 0x657d5e
or dword [ebp - 4], 0x200
jmp 0x657d5e