Function at 0x530db0
Capabilities:
Convert ip address from string
Get local ipv4 addresses
Get socket information

Disassembly:
sub esp, 0x658
mov eax, dword [0x6d6ec0]
xor eax, esp
mov dword [esp + 0x654], eax
push ebx
mov ebx, dword [esp + 0x664]
push ebp
push esi
push edi
mov edi, dword [esp + 0x66c]
push 0x2e
push 0
mov dword [esp + 0x24], 0xffffffff
mov eax, dword [edi + 0x18]
mov dword [esp + 0x28], eax
add eax, 0x430
mov dword [esp + 0x34], eax
lea eax, [esp + 0xc1]
push eax
mov byte [esp + 0xc4], 0
call fcn.00621d30
mov ecx, dword [edi + 0x564]
add esp, 0xc
xor ebp, ebp
mov dword [esp + 0x14], ecx
mov dword [esp + 0x34], 0
mov dword [esp + 0x28], 0
mov dword [esp + 0x24], 0
mov byte [esp + 0x13], 1
mov dword [esp + 0x30], 0
test ecx, ecx
je 0x531025
mov edx, ecx
lea esi, [edx + 1]
mov al, byte [edx]
inc edx
test al, al
jne 0x530e48
sub edx, esi
cmp edx, 1
jbe 0x531025
mov al, byte [ecx]
cmp al, 0x5b
jne 0x530e8b
lea ebp, [ecx + 1]
mov esi, ebp
push 0x5d
push esi
call fcn.00621610
mov ecx, eax
add esp, 8
xor eax, eax
test ecx, ecx
cmove ebp, eax
mov eax, ecx
mov dword [esp + 0x30], ebp
sub eax, esi
mov ebp, ecx
neg ebp
sbb ebp, ebp
and ebp, eax
jmp 0x530ec3
cmp al, 0x3a
je 0x530ecb
push 0x3a
push ecx
call fcn.00621610
mov esi, eax
add esp, 8
mov eax, dword [esp + 0x14]
mov ebp, esi
mov dword [esp + 0x30], eax
test ebp, ebp
je 0x530f24
lea ecx, [esp + 0x40]
sub ebp, eax
push ecx
push eax
push 0x17
call dword [sym.imp.WS2_32.dll_inet_pton]
lea ecx, [eax - 1]
neg ecx
sbb ecx, ecx
and ecx, esi
xor esi, esi
xor edx, edx
test ecx, ecx
je 0x530f3e
push 0x3a
push ecx
call fcn.00621610
add esp, 8
mov dword [esp + 0x14], eax
xor esi, esi
xor edx, edx
test eax, eax
je 0x530f3e
push 0xa
push edx
inc eax
push eax
call fcn.0062ced8
push eax
call fcn.0050ba50
push 0x2d
push dword [esp + 0x28]
movzx esi, ax
call fcn.00621610
add esp, 0x18
test eax, eax
je 0x530f20
push 0xa
inc eax
push 0
push eax
call fcn.0062ced8
push eax
call fcn.0050ba50
add esp, 0x10
movzx edx, ax
jmp 0x530f3e
mov edx, esi
jmp 0x530f3e
mov ebp, eax
lea ecx, [ebp + 1]
nop dword [eax]
mov al, byte [ebp]
inc ebp
test al, al
jne 0x530f30
sub ebp, ecx
xor esi, esi
xor edx, edx
xor ecx, ecx
movzx eax, dx
cmp si, dx
cmovbe ecx, eax
movzx eax, cx
xor ecx, ecx
mov dword [esp + 0x24], eax
cmp si, dx
movzx eax, si
cmovbe ecx, eax
movzx eax, cx
mov dword [esp + 0x14], eax
test ebp, ebp
je 0x531013
cmp ebp, 0x32
jae 0x531569
push ebp
push dword [esp + 0x34]
lea eax, [esp + 0xf0]
push eax
call fcn.006217b0
mov esi, dword [esp + 0x2c]
lea eax, [esp + 0x26c]
add esp, 0xc
mov byte [esp + ebp + 0xe8], 0
push 0x401
push eax
lea eax, [esp + 0xf0]
push eax
mov eax, dword [esi + 0x24]
push dword [esi + 0x508]
add eax, 0x10
push eax
call fcn.0053e660
add esp, 4
push eax
mov eax, dword [esi + 0x24]
push dword [eax]
call fcn.0040f310
add esp, 0x18
sub eax, 0
je 0x530fe8
sub eax, 1
je 0x531569
sub eax, 1
jne 0x530ff1
lea esi, [esp + 0x260]
jmp 0x530ff3
lea esi, [esp + 0xe8]
jmp 0x530ff3
xor esi, esi
mov eax, dword [esp + 0x14]
movzx ebp, ax
mov eax, dword [esp + 0x24]
mov dword [esp + 0x28], ebp
movzx ebp, ax
mov dword [esp + 0x24], ebp
test esi, esi
jne 0x5310c1
jmp 0x531025
movzx ecx, ax
mov eax, dword [esp + 0x24]
movzx eax, ax
mov dword [esp + 0x28], ecx
mov dword [esp + 0x24], eax
lea eax, [esp + 0x18]
mov dword [esp + 0x18], 0x80
push eax
lea eax, [esp + 0x3c]
push eax
mov eax, dword [esp + 0x28]
push dword [eax + 0x1a0]
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
je 0x531078
push 0x100
lea eax, [esp + 0x164]
push eax
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
call fcn.004f1f30
push eax
push str.getsockname___failed:__s
push edi
call fcn.00508360
add esp, 0x18
jmp 0x531569
mov ax, word [esp + 0x38]
cmp ax, 0x17
je 0x53108c
lea ecx, [esp + 0x3c]
movzx eax, ax
jmp 0x531095
lea ecx, [esp + 0x40]
mov eax, 0x17
push 0x401
lea edx, [esp + 0x264]
movzx eax, ax
push edx
push ecx
push eax
call sub.WS2_32.dll_inet_ntop
test eax, eax
je 0x531569
xor al, al
lea esi, [esp + 0x260]
mov byte [esp + 0x13], al
lea eax, [esp + 0x34]
push eax
push 0
push 0
push esi
push edi
call fcn.005150e0
add esp, 0x14
cmp eax, 1
jne 0x5310e7
lea eax, [esp + 0x34]
push eax
push edi
call fcn.004fba30
add esp, 8
mov eax, dword [esp + 0x34]
test eax, eax
je 0x53155a
mov ebp, dword [eax]
push eax
push edi
call fcn.00515650
add esp, 8
test ebp, ebp
je 0x53155a
mov esi, dword [sym.imp.WS2_32.dll_WSAGetLastError]
nop dword [eax]
lea eax, [esp + 0x1c]
push eax
mov eax, dword [esp + 0x24]
movzx eax, byte [eax + 0x512]
push eax
push 0
push ebp
push edi
call fcn.00510980
add esp, 0x14
test eax, eax
je 0x531161
call esi
mov ebp, dword [ebp + 0x1c]
test ebp, ebp
jne 0x531110
push 0x100
lea ecx, [esp + 0x164]
push ecx
push eax
call fcn.004f1f30
push eax
push str.socket_failure:__s
push edi
call fcn.00508360
add esp, 0x18
jmp 0x531569
mov eax, dword [edi + 0x18]
test eax, eax
je 0x531178
movzx eax, byte [eax + 0x4de]
mov eax, dword [eax*4 + 0x681d78]
jmp 0x53117d
mov eax, 0x681ffc
push eax
push str.__s__ftp_state_use_port____opened_socket
push edi
call fcn.005085a0
push dword [ebp + 0x10]
lea eax, [esp + 0x48]
push dword [ebp + 0x18]
push eax
call fcn.006217b0
mov eax, dword [ebp + 0x10]
add esp, 0x18
mov dword [esp + 0x18], eax
mov eax, dword [esp + 0x28]
movzx esi, ax
cmp ax, word [esp + 0x24]
ja 0x53154a
mov eax, dword [sym.imp.WS2_32.dll_htons]
push esi
call eax
push dword [esp + 0x18]
mov word [esp + 0x3e], ax
lea eax, [esp + 0x3c]
push eax
push dword [esp + 0x24]
call dword [sym.imp.WS2_32.dll_bind]
test eax, eax
je 0x53129e
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
mov cl, byte [esp + 0x13]
test cl, cl
je 0x531258
cmp eax, 0x2741
jne 0x531258
push 0x100
lea eax, [esp + 0x164]
push eax
push 0x2741
call fcn.004f1f30
push eax
movzx eax, si
push eax
push str.bind_port_hu__on_non_local_address_failed:__s
push edi
call fcn.00508430
add esp, 0x1c
mov dword [esp + 0x18], 0x80
lea eax, [esp + 0x18]
push eax
lea eax, [esp + 0x3c]
push eax
mov eax, dword [esp + 0x28]
push dword [eax + 0x1a0]
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
jne 0x53104b
mov eax, dword [esp + 0x28]
movzx esi, ax
xor al, al
mov byte [esp + 0x13], al
jmp 0x5311b5
cmp eax, 0x2740
je 0x531264
cmp eax, 0xd
jne 0x531273
inc esi
mov byte [esp + 0x13], cl
movzx eax, si
mov esi, eax
jmp 0x5311aa
push 0x100
lea ecx, [esp + 0x164]
push ecx
push eax
call fcn.004f1f30
push eax
movzx eax, si
push eax
push str.bind_port_hu__failed:__s
push edi
call fcn.00508360
add esp, 0x1c
jmp 0x531569
lea eax, [esp + 0x18]
mov dword [esp + 0x18], 0x80
push eax
lea eax, [esp + 0x3c]
push eax
push dword [esp + 0x24]
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
jne 0x53104b
mov eax, dword [edi + 0x18]
test eax, eax
je 0x5312d9
movzx eax, byte [eax + 0x4de]
mov eax, dword [eax*4 + 0x681d78]
jmp 0x5312de
mov eax, 0x681ffc
movzx esi, si
push esi
push eax
push str.__s__ftp_state_use_port____socket_bound_to_port__d
push edi
call fcn.005085a0
add esp, 0x10
push 1
push dword [esp + 0x20]
call dword [sym.imp.WS2_32.dll_listen]
test eax, eax
je 0x53132e
push 0x100
lea eax, [esp + 0x164]
push eax
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
call fcn.004f1f30
push eax
push str.socket_failure:__s
push edi
call fcn.00508360
add esp, 0x18
jmp 0x531569
mov eax, dword [edi + 0x18]
test eax, eax
je 0x531345
movzx eax, byte [eax + 0x4de]
mov eax, dword [eax*4 + 0x681d78]
jmp 0x53134a
mov eax, 0x681ffc
push esi
push eax
push str.__s__ftp_state_use_port____listening_on__d
push edi
call fcn.005085a0
push 0x2f
lea eax, [esp + 0xcc]
push eax
push ebp
call fcn.00515090
mov esi, dword [esp + 0x3c]
add esp, 0x1c
cmp byte [esi + 0x299], 0
jne 0x531387
cmp byte [esi + 0x294], 0
je 0x531387
mov byte [esi + 0x299], 1
lea eax, [esp + 0x1c]
push eax
push 1
push esi
push edi
call fcn.005105d0
mov ebp, eax
add esp, 0x10
mov dword [esp + 0x14], ebp
test ebp, ebp
jne 0x53156e
mov dword [esp + 0x1c], 0xffffffff
cmp ebx, 2
je 0x53140e
mov ebp, dword [sym.imp.WS2_32.dll_ntohs]
mov cx, word [esp + 0x38]
nop
cmp byte [esi + 0x299], 0
jne 0x5313cd
test ebx, ebx
je 0x531404
cmp ebx, 1
jne 0x5313d8
cmp cx, 2
jne 0x531404
movzx eax, cx
sub eax, 2
je 0x5313e5
sub eax, 0x15
jne 0x531404
push dword [esp + 0x3a]
call ebp
movzx esi, ax
test ebx, ebx
je 0x5314d2
cmp ebx, 1
je 0x531440
mov cx, word [esp + 0x38]
mov esi, dword [esp + 0x20]
inc ebx
cmp ebx, 2
jne 0x5313c0
mov ebp, dword [esp + 0x14]
mov esi, dword [esp + 0x2c]
mov dword [esi + 0xa0], ebx
mov esi, dword [edi + 0x18]
mov al, byte [esi + 0x4de]
cmp al, 0x1c
je 0x53153d
test esi, esi
je 0x531524
movzx eax, al
mov eax, dword [eax*4 + 0x681d78]
jmp 0x531529
mov al, byte [esp + 0xb8]
lea edx, [esp + 0x11c]
test al, al
je 0x531473
lea ecx, [esp + 0xb8]
mov ebp, edx
sub ecx, ebp
nop dword [eax]
cmp al, 0x2e
mov al, 0x2c
je 0x531469
mov al, byte [edx + ecx]
mov byte [edx], al
inc edx
mov al, byte [ecx + edx]
test al, al
jne 0x531460
movzx ecx, si
movzx eax, cl
push eax
shr ecx, 8
push ecx
push str.__d__d
push 0x14
push edx
mov byte [edx], 0
call fcn.0050dc50
mov esi, dword [esp + 0x40]
lea eax, [esp + 0x130]
push eax
push 0x681e09
push 0x6818b8
push esi
push edi
call fcn.00545db0
mov ebp, eax
add esp, 0x28
test ebp, ebp
je 0x531412
push ebp
call fcn.004f20a0
push eax
push str.Failure_sending_PORT_command:__s
push edi
call fcn.00508360
add esp, 0x10
jmp 0x53156e
movzx eax, si
mov esi, dword [esp + 0x2c]
push eax
lea eax, [esp + 0xbc]
push eax
xor eax, eax
cmp word [esp + 0x40], 2
setne al
inc eax
push eax
push str.EPRT
push str._s__d_s_hu
push esi
push edi
call fcn.00545db0
mov ebp, eax
add esp, 0x1c
test ebp, ebp
je 0x531412
push ebp
call fcn.004f20a0
push eax
push str.Failure_sending_EPRT_command:__s
push edi
call fcn.00508360
add esp, 0x10
jmp 0x53156e
mov eax, 0x681ffc
push str.PORT
push eax
push str.__s_______s_
push edi
call fcn.005085a0
add esp, 0x10
mov byte [esi + 0x4de], 0x1c
test ebp, ebp
je 0x5315ab
jmp 0x53156e
push str.bind___failed__we_ran_out_of_ports
push edi
call fcn.00508360
add esp, 8
jmp 0x531569
push esi
push str.failed_to_resolve_the_address_provided_to_PORT:__s
push edi
call fcn.00508360
add esp, 0xc
mov ebp, 0x1e
mov esi, dword [edi + 0x18]
mov al, byte [esi + 0x4de]
test al, al
je 0x5315a4
test esi, esi
je 0x53158b
movzx eax, al
mov eax, dword [eax*4 + 0x681d78]
jmp 0x531590
mov eax, 0x681ffc
push str.STOP
push eax
push str.__s_______s_
push edi
call fcn.005085a0
add esp, 0x10
mov byte [esi + 0x4de], 0
mov eax, dword [esp + 0x1c]
cmp eax, 0xffffffff
je 0x5315c2
push eax
push dword [esp + 0x24]
push edi
call fcn.00510950
add esp, 0xc
mov ecx, dword [esp + 0x664]
mov eax, ebp
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.0061f478
add esp, 0x658
ret