Akkariin/proxychains-ng
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Preserve dnat mapping when used with localnet.

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This allows using proxychains as a means of just changing the
destination IP and port of network traffic similar to iptables DNAT
without the need for root permissions.

Example usage:

localnet 127.0.0.0/8
dnat 1.1.1.1:1234 127.0.0.1:8123

This will redirect traffic to 1.1.1.1 on port 1234 to 127.0.0.1:8123.
This commit is contained in:
Gijs Hollestelle 2022-09-14 13:35:36 +02:00
parent 060801d8c8
commit 3ab15aa05c
1 changed files with 4 additions and 0 deletions
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4
src/libproxychains.c
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@ -743,6 +743,10 @@ HOOKFUNC(int, connect, int sock, const struct sockaddr *addr, unsigned int len)
if((p_addr_in->s_addr ^ localnet_addr[i].in_addr.s_addr) & localnet_addr[i].in_mask.s_addr)
continue;
}
if (!v6 && dnat) {
memcpy(&((struct sockaddr_in *) addr)->sin_addr, p_addr_in, sizeof(*p_addr_in));
((struct sockaddr_in *) addr)->sin_port = htons(port);
}
PDEBUG("accessing localnet using true_connect\n");
return true_connect(sock, addr, len);
}