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Properly authenticate users

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This commit is contained in:
momo5502 2023-04-30 12:59:52 +02:00
parent d1fdab9902
commit 928695ea93
3 changed files with 23 additions and 9 deletions
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13
src/client/component/auth.cpp
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@ -109,7 +109,9 @@ namespace auth
{ {
utils::byte_buffer buffer{}; utils::byte_buffer buffer{};
buffer.write_string(get_key().serialize(PK_PUBLIC)); buffer.write_string(get_key().serialize(PK_PUBLIC));
buffer.write_string(utils::cryptography::ecc::sign_message(get_key(), "hello"));
const std::string challenge(reinterpret_cast<const char*>(0x15A8A7F10_g), 32);
buffer.write_string(utils::cryptography::ecc::sign_message(get_key(), challenge));
profile_infos::get_profile_info().value_or(profile_infos::profile_info{}).serialize(buffer); profile_infos::get_profile_info().value_or(profile_infos::profile_info{}).serialize(buffer);
@ -219,7 +221,14 @@ namespace auth
utils::cryptography::ecc::key key{}; utils::cryptography::ecc::key key{};
key.deserialize(buffer.read_string()); key.deserialize(buffer.read_string());
if (!utils::cryptography::ecc::verify_message(key, "hello", buffer.read_string())) std::string challenge{};
challenge.resize(32);
const auto get_challenge = reinterpret_cast<void(*)(const game::netadr_t*, void*, size_t)>(game::select(
0x1412E15E0, 0x14016DDC0));
get_challenge(&target, challenge.data(), challenge.size());
if (!utils::cryptography::ecc::verify_message(key, challenge, buffer.read_string()))
{ {
network::send(target, "error", "Bad signature"); network::send(target, "error", "Bad signature");
return; return;

17
src/client/component/network.cpp
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@ -304,28 +304,33 @@ namespace network
{ {
scheduler::loop(game::fragment_handler::clean, scheduler::async, 5s); scheduler::loop(game::fragment_handler::clean, scheduler::async, 5s);
utils::hook::nop(game::select(0x1423322B6, 0x140596DF6), 4);
// don't increment data pointer to optionally skip socket byte // don't increment data pointer to optionally skip socket byte
utils::hook::call(game::select(0x142332283, 0x140596DC3), read_socket_byte_stub); utils::hook::nop(game::select(0x1423322B6, 0x140596DF6), 4);
// optionally read socket byte // optionally read socket byte
utils::hook::call(game::select(0x1423322C1, 0x140596E01), verify_checksum_stub); utils::hook::call(game::select(0x142332283, 0x140596DC3), read_socket_byte_stub);
// skip checksum verification // skip checksum verification
utils::hook::set<uint8_t>(game::select(0x14233249E, 0x140596F2E), 0); // don't add checksum to packet utils::hook::call(game::select(0x1423322C1, 0x140596E01), verify_checksum_stub);
// don't add checksum to packet
utils::hook::set<uint8_t>(game::select(0x14233249E, 0x140596F2E), 0);
// Recreate NET_SendPacket to increase max packet size // Recreate NET_SendPacket to increase max packet size
//utils::hook::jump(game::select(0x1423323B0, 0x140596E40), net_sendpacket_stub); //utils::hook::jump(game::select(0x1423323B0, 0x140596E40), net_sendpacket_stub);
utils::hook::set<uint32_t>(game::select(0x14134C6E0, 0x14018E574), 5);
// set initial connection state to challenging // set initial connection state to challenging
utils::hook::set<uint32_t>(game::select(0x14134C6E0, 0x14018E574), 4);
// intercept command handling // intercept command handling
utils::hook::call(game::select(0x14134D146, 0x14018EED0), utils::hook::assemble(handle_command_stub)); utils::hook::call(game::select(0x14134D146, 0x14018EED0), utils::hook::assemble(handle_command_stub));
utils::hook::set<uint8_t>(game::select(0x14224DEAD, 0x1405315F9), 0xEB);
// don't kick clients without dw handle // don't kick clients without dw handle
utils::hook::set<uint8_t>(game::select(0x14224DEAD, 0x1405315F9), 0xEB);
// Skip DW stuff in NetAdr_ToString // Skip DW stuff in NetAdr_ToString
utils::hook::set<uint8_t>(game::select(0x142172EF2, 0x140515881), 0xEB); utils::hook::set<uint8_t>(game::select(0x142172EF2, 0x140515881), 0xEB);
// NA_IP -> NA_RAWIP in NetAdr_ToString // NA_IP -> NA_RAWIP in NetAdr_ToString
utils::hook::set<uint8_t>(game::select(0x142172ED4, 0x140515864), game::NA_RAWIP); utils::hook::set<uint8_t>(game::select(0x142172ED4, 0x140515864), game::NA_RAWIP);

2
src/client/game/structs.hpp
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@ -1,6 +1,6 @@
#pragma once #pragma once
#define PROTOCOL 5 #define PROTOCOL 6
#define SUB_PROTOCOL 1 #define SUB_PROTOCOL 1
#ifdef __cplusplus #ifdef __cplusplus