Function at 0x43c740
Capabilities:
Convert ip address from string
Get local ipv4 addresses
Get socket information

Disassembly:
sub esp, 0x628
mov eax, dword [0x4a237c]
xor eax, esp
mov dword [esp + 0x624], eax
push ebx
push ebp
mov ebp, dword [esp + 0x634]
push esi
push edi
mov edi, dword [esp + 0x640]
mov eax, dword [ebp + 0xc]
mov dword [esp + 0x10], eax
add eax, 0x378
push 0x2f
mov dword [esp + 0x30], eax
lea eax, [esp + 0xc0]
push 0
push eax
mov dword [esp + 0x44], ebp
mov dword [esp + 0x2c], 0xffffffff
call fcn.0045c350
mov esi, dword [ebp + 0x51c]
xor eax, eax
add esp, 0xc
mov dword [esp + 0x30], eax
mov dword [esp + 0x34], eax
mov dword [esp + 0x28], eax
mov dword [esp + 0x24], eax
mov byte [esp + 0x17], 1
mov dword [esp + 0x18], eax
test esi, esi
je 0x43c9cf
mov ecx, esi
lea edx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x43c7c4
sub ecx, edx
cmp ecx, 1
jbe 0x43c9cf
mov ecx, esi
lea edx, [ecx + 1]
nop dword [eax + eax]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x43c7e0
sub ecx, edx
cmp ecx, 0x41
jae 0x43c7f5
mov ecx, 0x41
jmp 0x43c809
mov ecx, esi
lea edx, [ecx + 1]
nop word [eax + eax]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x43c800
sub ecx, edx
lea eax, [ecx + 1]
push 1
push eax
call dword [0x4a2010]
add esp, 8
mov dword [esp + 0x18], eax
test eax, eax
jne 0x43c82c
mov ebx, dword [esp + 0x10]
lea esi, [eax + 0x1b]
jmp 0x43cea0
mov al, byte [esi]
cmp al, 0x5b
jne 0x43c85c
push 0x5d
push esi
call fcn.0045c4b0
mov ebx, eax
add esp, 8
test ebx, ebx
je 0x43c8cd
lea ecx, [esi + 1]
sub eax, ecx
push eax
push ecx
push dword [esp + 0x20]
call fcn.00462700
add esp, 0xc
jmp 0x43c8cd
cmp al, 0x3a
jne 0x43c864
mov ebx, esi
jmp 0x43c8cd
push 0x3a
push esi
call fcn.0045c4b0
mov ebx, eax
add esp, 8
test ebx, ebx
je 0x43c8ba
lea eax, [esp + 0x3c]
push eax
push esi
push 0x17
call dword [sym.imp.WS2_32.dll_inet_pton]
cmp eax, 1
jne 0x43c8a6
mov ecx, dword [esp + 0x18]
sub ecx, esi
nop
mov al, byte [esi]
lea esi, [esi + 1]
mov byte [esi + ecx - 1], al
test al, al
jne 0x43c890
xor esi, esi
xor edx, edx
jmp 0x43c927
mov eax, ebx
sub eax, esi
push eax
push esi
push dword [esp + 0x20]
call fcn.00462700
add esp, 0xc
jmp 0x43c8cd
mov ecx, dword [esp + 0x18]
sub ecx, esi
mov al, byte [esi]
lea esi, [esi + 1]
mov byte [esi + ecx - 1], al
test al, al
jne 0x43c8c0
xor esi, esi
xor edx, edx
test ebx, ebx
je 0x43c927
push 0x3a
push ebx
call fcn.0045c4b0
mov ebx, eax
add esp, 8
xor edx, edx
test ebx, ebx
je 0x43c927
push 0xa
push edx
lea eax, [ebx + 1]
push eax
call fcn.00463a7c
push eax
call fcn.0041c050
push 0x2d
push ebx
movzx esi, ax
call fcn.0045c4b0
add esp, 0x18
test eax, eax
je 0x43c925
push 0xa
inc eax
push 0
push eax
call fcn.00463a7c
push eax
call fcn.0041c050
add esp, 0x10
movzx edx, ax
jmp 0x43c927
mov edx, esi
xor ecx, ecx
movzx eax, dx
cmp si, dx
cmovbe ecx, eax
movzx eax, si
movzx ebx, cx
xor ecx, ecx
cmp si, dx
cmovbe ecx, eax
mov eax, dword [esp + 0x18]
movzx esi, cx
cmp byte [eax], 0
je 0x43c9c3
push 0x401
lea ecx, [esp + 0x234]
push ecx
push eax
mov eax, dword [esp + 0x1c]
push dword [eax + 0x448]
mov eax, dword [eax + 0x40]
add eax, 0x10
push eax
call fcn.00454210
add esp, 4
push eax
mov eax, dword [esp + 0x24]
mov eax, dword [eax + 0x40]
push dword [eax]
call fcn.00403cd0
add esp, 0x18
sub eax, 0
je 0x43c9a5
sub eax, 1
je 0x43ce97
sub eax, 1
jne 0x43c9af
lea eax, [esp + 0x230]
mov dword [esp + 0x30], eax
jmp 0x43c9b1
mov eax, dword [esp + 0x18]
mov dword [esp + 0x30], eax
jmp 0x43c9b1
xor eax, eax
mov dword [esp + 0x28], esi
mov dword [esp + 0x24], ebx
test eax, eax
jne 0x43ca64
jmp 0x43c9cf
mov eax, esi
mov dword [esp + 0x28], eax
mov eax, ebx
mov dword [esp + 0x24], eax
mov ebx, dword [esp + 0x10]
lea eax, [esp + 0x1c]
push eax
lea eax, [esp + 0x40]
mov dword [esp + 0x20], 0x80
push eax
push dword [ebx + 0x120]
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
je 0x43ca22
push 0x100
lea eax, [esp + 0x134]
push eax
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
call fcn.0042c170
push eax
push str.getsockname___failed:__s
push ebp
call fcn.0041a520
add esp, 0x18
jmp 0x43ce9b
cmp word [esp + 0x3c], 0x17
lea edx, [esp + 0x44]
movzx eax, word [esp + 0x3c]
lea ecx, [esp + 0x40]
cmove ecx, edx
lea edx, [esp + 0x230]
push 0x401
push edx
push ecx
push eax
call sub.WS2_32.dll_inet_ntop
test eax, eax
je 0x43ce9b
lea eax, [esp + 0x230]
mov byte [esp + 0x17], 0
mov dword [esp + 0x30], eax
lea ecx, [esp + 0x34]
push ecx
push 0
push 0
push eax
push ebp
call fcn.00421f70
add esp, 0x14
cmp eax, 1
jne 0x43ca8a
lea eax, [esp + 0x34]
push eax
push ebp
call fcn.00410120
add esp, 8
mov eax, dword [esp + 0x34]
test eax, eax
je 0x43ce84
mov ebx, dword [eax]
push eax
push ebp
call fcn.004222c0
add esp, 8
test ebx, ebx
je 0x43ce84
xor esi, esi
nop dword [eax]
lea eax, [esp + 0x20]
push eax
mov eax, dword [esp + 0x14]
movzx eax, byte [eax + 0x451]
push eax
push 0
push ebx
push ebp
call fcn.00446250
add esp, 0x14
test eax, eax
je 0x43cae2
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
mov ebx, dword [ebx + 0x1c]
mov esi, eax
test ebx, ebx
jne 0x43cab0
jmp 0x43cae6
test ebx, ebx
jne 0x43cb0d
push 0x100
lea eax, [esp + 0x134]
push eax
push esi
call fcn.0042c170
push eax
push str.socket_failure:__s
push ebp
call fcn.0041a520
add esp, 0x18
jmp 0x43ce97
push dword [ebx + 0x10]
lea eax, [esp + 0x40]
push dword [ebx + 0x18]
push eax
call fcn.0045c5e0
mov eax, dword [ebx + 0x10]
add esp, 0xc
mov dword [esp + 0x1c], eax
mov eax, dword [esp + 0x28]
cmp ax, word [esp + 0x24]
movzx esi, ax
ja 0x43ce74
mov eax, dword [sym.imp.WS2_32.dll_htons]
push esi
call eax
push dword [esp + 0x1c]
movzx eax, ax
mov word [esp + 0x42], ax
lea eax, [esp + 0x40]
push eax
push dword [esp + 0x28]
call dword [sym.imp.WS2_32.dll_bind]
test eax, eax
je 0x43cc24
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
cmp byte [esp + 0x17], 0
je 0x43cbe2
cmp eax, 0x2741
jne 0x43cbe2
push 0x100
lea eax, [esp + 0x134]
push eax
push 0x2741
call fcn.0042c170
push eax
movzx eax, si
push eax
push str.bind_port_hu__on_non_local_address_failed:__s
push ebp
call fcn.0041a5f0
add esp, 0x1c
mov dword [esp + 0x1c], 0x80
lea eax, [esp + 0x1c]
push eax
lea eax, [esp + 0x40]
push eax
mov eax, dword [esp + 0x18]
push dword [eax + 0x120]
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
jne 0x43cc4f
mov eax, dword [esp + 0x28]
movzx esi, ax
cmp si, word [esp + 0x24]
mov byte [esp + 0x17], 0
jmp 0x43cb33
cmp eax, 0x2740
je 0x43cbee
cmp eax, 0xd
jne 0x43cbf9
inc esi
cmp si, word [esp + 0x24]
jmp 0x43cb33
push 0x100
lea ecx, [esp + 0x134]
push ecx
push eax
call fcn.0042c170
push eax
movzx eax, si
push eax
push str.bind_port_hu__failed:__s
push ebp
call fcn.0041a520
add esp, 0x1c
jmp 0x43ce97
cmp si, word [esp + 0x24]
ja 0x43ce74
lea eax, [esp + 0x1c]
mov dword [esp + 0x1c], 0x80
push eax
lea eax, [esp + 0x40]
push eax
push dword [esp + 0x28]
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
je 0x43cc7c
push 0x100
lea eax, [esp + 0x134]
push eax
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
call fcn.0042c170
push eax
push str.getsockname___failed:__s
push ebp
call fcn.0041a520
add esp, 0x18
jmp 0x43ce97
push 1
push dword [esp + 0x24]
call dword [sym.imp.WS2_32.dll_listen]
test eax, eax
je 0x43ccb9
push 0x100
lea eax, [esp + 0x134]
push eax
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
call fcn.0042c170
push eax
push str.socket_failure:__s
push ebp
call fcn.0041a520
add esp, 0x18
jmp 0x43ce97
push 0x2f
lea eax, [esp + 0xc0]
push eax
push ebx
call fcn.00421f30
mov eax, dword [esp + 0x1c]
add esp, 0xc
cmp byte [eax + 0x1d2], 0
jne 0x43cce9
cmp byte [eax + 0x1cc], 0
je 0x43cce9
mov byte [eax + 0x1d2], 1
cmp edi, 2
je 0x43cd4a
mov esi, dword [sym.imp.WS2_32.dll_ntohs]
mov cx, word [esp + 0x3c]
nop dword [eax]
cmp byte [eax + 0x1d2], 0
jne 0x43cd0d
test edi, edi
je 0x43cd44
cmp edi, 1
jne 0x43cd18
cmp cx, 2
jne 0x43cd44
movzx eax, cx
sub eax, 2
je 0x43cd25
sub eax, 0x15
jne 0x43cd40
push dword [esp + 0x3e]
call esi
movzx ebx, ax
test edi, edi
je 0x43ce1e
cmp edi, 1
je 0x43cd8a
mov cx, word [esp + 0x3c]
mov eax, dword [esp + 0x10]
inc edi
cmp edi, 2
jne 0x43cd00
mov ebx, dword [esp + 0x2c]
lea eax, [esp + 0x20]
mov dword [ebx + 0x90], edi
mov ebx, dword [esp + 0x10]
push eax
push 1
push ebx
push ebp
call fcn.00445f80
mov esi, eax
add esp, 0x10
test esi, esi
jne 0x43cea0
mov eax, dword [ebp + 0xc]
mov dword [esp + 0x20], 0xffffffff
mov byte [eax + 0x416], 0x1c
jmp 0x43ceaa
lea edx, [esp + 0xec]
mov ebp, 0x2c
lea esi, [esp + 0xbc]
nop dword [eax]
mov cl, byte [esi]
test cl, cl
je 0x43cdb7
cmp cl, 0x2e
movzx eax, cl
cmove eax, ebp
mov byte [edx], al
inc edx
add esi, 1
jne 0x43cda0
movzx ecx, bx
movzx eax, cl
push eax
shr ecx, 8
push ecx
push str.__d__d
push 0x14
push edx
mov byte [edx], 0
call fcn.0042a570
mov ebx, dword [esp + 0x40]
lea eax, [esp + 0x100]
mov ebp, dword [esp + 0x4c]
push eax
push str.PORT
push 0x488368
push ebx
push ebp
call fcn.00452c10
mov esi, eax
add esp, 0x28
test esi, esi
je 0x43cd4e
push esi
call fcn.0042c2e0
push eax
push str.Failure_sending_PORT_command:__s
push ebp
call fcn.0041a520
mov ebx, dword [esp + 0x20]
add esp, 0x10
jmp 0x43cea0
movzx eax, bx
mov ebx, dword [esp + 0x2c]
push eax
lea eax, [esp + 0xc0]
push eax
xor eax, eax
cmp word [esp + 0x44], 2
setne al
inc eax
push eax
push str.EPRT
push str._s__d_s_hu
push ebx
push ebp
call fcn.00452c10
mov esi, eax
add esp, 0x1c
test esi, esi
je 0x43cd4e
push esi
call fcn.0042c2e0
push eax
push str.Failure_sending_EPRT_command:__s
push ebp
call fcn.0041a520
mov ebx, dword [esp + 0x20]
add esp, 0x10
jmp 0x43cea0
push str.bind___failed__we_ran_out_of_ports
push ebp
call fcn.0041a520
add esp, 8
jmp 0x43ce97
mov eax, dword [esp + 0x30]
push eax
push str.failed_to_resolve_the_address_provided_to_PORT:__s
push ebp
call fcn.0041a520
add esp, 0xc
mov ebx, dword [esp + 0x10]
mov esi, 0x1e
mov eax, dword [ebp + 0xc]
mov byte [eax + 0x416], 0
mov eax, dword [esp + 0x20]
cmp eax, 0xffffffff
je 0x43cebe
push eax
push ebx
push ebp
call fcn.00446180
add esp, 0xc
push dword [esp + 0x18]
call dword [0x4a2004]
mov ecx, dword [esp + 0x638]
add esp, 4
mov eax, esi
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.0045a753
add esp, 0x628
ret