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nfqws: --dpi-desync-hostfakesplit-mod

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bol-van
2025-09-22 09:51:25 +03:00
parent d8f9ba29c3
commit 170e9d7ffd
3 changed files with 91 additions and 4 deletions
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33
nfq/desync.c
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@@ -2036,9 +2036,36 @@ static uint8_t dpi_desync_tcp_packet_play(bool replay, size_t reasm_offset, uint
DLOG("fakehost out of memory\n");
goto send_orig;
}
fill_random_az(fakehost,1);
fill_random_az09(fakehost+1,host_size-1);
if (host_size>=7) fakehost[host_size-4] = '.';
if (*dp->hfs_mod.host)
{
if (host_size<=dp->hfs_mod.host_size)
{
// "google.com" => "gle.com"
// "google.com" => "google.com"
memcpy(fakehost,dp->hfs_mod.host+dp->hfs_mod.host_size-host_size,host_size);
}
else
{
// "google.com" => "nb4auv9.google.com"
// "google.com" => ".google.com"
sz = host_size - dp->hfs_mod.host_size;
memcpy(fakehost+sz,dp->hfs_mod.host,dp->hfs_mod.host_size);
fakehost[--sz]='.';
if (sz)
{
fill_random_az(fakehost,1);
sz--;
}
fill_random_az09(fakehost+1,sz);
}
}
else
{
fill_random_az(fakehost,1);
fill_random_az09(fakehost+1,host_size-1);
if (host_size>=7) fakehost[host_size-4] = '.';
}
fakehost[host_size]=0;
DLOG("generated fake host: %s\n",fakehost);
pkt2_len = sizeof(pkt2);