Protobuf的正逆向学习和基于python的实现
本帖最后由 jingtai123 于 2022-9-26 09:06 编辑## 1、起因
- 期初开始对https://cat-match.easygame2021.com/sheep/v1/game/game_over_ex/ 抓到的包，很好奇，MatchPlayInfo到底是个啥加密方式。
- 通过分析JS源码,找到一个叫做*** Protbuf*** 的东西，头一次 接触，学了一下，如何用Python实现这个玩意，所以有了这篇文章，算是对学习protobuf的记录。
- 欢迎大佬批评指正。
```
{
"MatchPlayInfo" : "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",
"Version" : "0.0.1",
"MapSeed2" : "1666910531",
"skin" : 1,
"rank_time" : 144,
"rank_role" : 1,
"rank_state" : 1,
"rank_score" : 1
}
```
## 2、protobuf 是什么
> protobuf是google提供的一个 **开源序列化框架** ，**类似于XML，JSON**这样的数据表示语言，其最大的特点是 **基于二进制** ，因此比传统的XML 表示高效短小得多。虽然是二进制数据格式，但并没有因此变得复杂，开发人员通过按照一定的语法定义结构化的消息格式，然后送给命令行工具，工具将自动生成 相关的类，可以支持php、java、c++、python等语言环境。通过将这些类包含在项目中，可以很轻松的调用相关方法来完成业务消息的序列化与反 序列化工作。
> protobuf在google中是一个比较核心的基础库，作为分布式运算涉及到大量的不同业务消息的传递，如何高效简洁的表示、操作这些业务消息在 google这样的大规模应用中是至关重要的。而protobuf这样的库正好是在效率、数据大小、易用性之间取得了很好的平衡。
简单看来 就是一个序列化和反序列化工具。
## 3、protobuf 怎么用
#### 正向：
1. 定义一个.proto文件的message结构体
2. 通过proto库提供的工具 生成所需语言的代码
3. 通过生成的代码 进行加解密
#### 逆向：
1. 通过blackboxprotobuf工具对密文解码
2. 通过读源码分析对应的参数
3. 构造message结构体
4. 通过生成的代码加解密
## 4、逆向实操
### step1
#### 对密文的预处理
1. 通过源码可以看到，MatchPlayInfo是序列化后通过base64编码的
```
var N ={ rank_score: 1,
rank_state: t,
rank_time: this.countdown,
rank_role: o,
skin: r,
MatchPlayInfo: S.default.base64_encode(b)
};
```
2. 需要下述将MatchPlayInfo中的内容先base64解码
> 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
3. base64解码：
```
import base64
mydate = "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"
out_b = base64.b64decode(mydata)
```
得到的就是protobuf序列化后的结果
> b'\x08\x03"\x05\x08\x8a\x01\x10\x08"\x05\x08\x8b\x01\x10\x08"\x05\x08\x90\x01\x10\x08"\x05\x08\xd1\x01\x10\x05"………………
### step2
#### 使用blackboxprotobuf 对密文反序列化
1. 安装blackboxprotobuf ， protobuf
```
pip install blackboxprotobuf protobuf
```
2. 解析为json
```
import blackboxprotobuf
deserialize_data, message_type = blackboxprotobuf.protobuf_to_json(out_b)
print(f"原始数据: {deserialize_data}")
print(f"消息类型: {message_type}")
```
得到结果：
> 原始数据: {"1": "3","4": [ { "1": "138","2": "8"},{"1": "139","2": "8"},{"1": "144","2": "8"},…………]}
> 消息类型: {'1': {'type': 'int', 'name': ''}, '4': {'type': 'message', 'message_typedef': {'1': {'type': 'int', 'name': ''}, '2': {'type': 'int', 'name': ''}}, 'name': ''}}
### step3
#### 分析源码构造message的.proto文件
1. 源码：
##### MatchPlayInfo部分
```
o.MatchPlayInfo = function () {
function t(t) {
if (this.stepInfoList = [], t) for (var e = Object.keys(t), o = 0; o < e.length; ++o) null != t] && (this] = t]);
}
return t.prototype.gameType = 0, t.prototype.mapId = 0, t.prototype.mapSeed = 0,
t.prototype.stepInfoList = r.emptyArray, t.create = function (e) {
return new t(e);
}, t.encode = function (t, e) {
if (e || (e = a.create()), null != t.gameType && Object.hasOwnProperty.call(t, "gameType") && e.uint32(8).int32(t.gameType),
null != t.mapId && Object.hasOwnProperty.call(t, "mapId") && e.uint32(16).int32(t.mapId),
null != t.mapSeed && Object.hasOwnProperty.call(t, "mapSeed") && e.uint32(24).int32(t.mapSeed),
null != t.stepInfoList && t.stepInfoList.length) for (var o = 0; o < t.stepInfoList.length; ++o) c.protocol.MatchStepInfo.encode(t.stepInfoList, e.uint32(34).fork()).ldelim();
return e;
}, t.decode = function (t, e) {
t instanceof i || (t = i.create(t));
for (var o = void 0 === e ? t.len : t.pos + e, n = new c.protocol.MatchPlayInfo(); t.pos < o;) {
var a = t.uint32();
switch (a >>> 3) {
case 1:
n.gameType = t.int32();
break;
case 2:
n.mapId = t.int32();
break;
case 3:
n.mapSeed = t.int32();
break;
case 4:
n.stepInfoList && n.stepInfoList.length || (n.stepInfoList = []), n.stepInfoList.push(c.protocol.MatchStepInfo.decode(t, t.uint32()));
break;
default:
t.skipType(7 & a);
}
}
return n;
}, t;
}()
```
##### MatchStepInfo部分
```
o.MatchStepInfo = function () {
function t(t) {
if (t) for (var e = Object.keys(t), o = 0; o < e.length; ++o) null != t] && (this] = t]);
}
return t.prototype.chessIndex = 0, t.prototype.timeTag = 0, t.create = function (e) {
return new t(e);
}, t.encode = function (t, e) {
return e || (e = a.create()), null != t.chessIndex && Object.hasOwnProperty.call(t, "chessIndex") && e.uint32(8).int32(t.chessIndex),
null != t.timeTag && Object.hasOwnProperty.call(t, "timeTag") && e.uint32(16).int32(t.timeTag),
e;
}, t.decode = function (t, e) {
t instanceof i || (t = i.create(t));
for (var o = void 0 === e ? t.len : t.pos + e, n = new c.protocol.MatchStepInfo(); t.pos < o;) {
var a = t.uint32();
switch (a >>> 3) {
case 1:
n.chessIndex = t.int32();
break;
case 2:
n.timeTag = t.int32();
break;
default:
t.skipType(7 & a);
}
}
return n;
}, t;
}()
```
2. 根据源码及解析结果构建.proto文件
```
syntax = 'proto3';
message MatchPlayInfo{
int32 gameType = 1;
int32 mapId = 2;
int32 mapSeed = 3;
repeated StepInfoList stepInfoList = 4;
}
message StepInfoList{
int32 chessIndex = 1;
int32 timeTag = 2;
}
```
存为 yang.proto文件
### step4
#### 通过.proto文件生成对应的python代码
1. 安装grpcio-tools库
```
pip install grpcio-tools
```
2. 终端运行 生成对应的 yang_pb2.py
```
python -m grpc_tools.protoc -I. --python_out=. --grpc_python_out=. yang.proto
```
### step5
#### 引用 yang_pb2.py 进行加解密
#### 解密：
```
import yang_pb2
mydata = "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"
out_b = base64.b64decode(mydata)
matchPlayInfo_out = yang_pb2.MatchPlayInfo()
matchPlayInfo_out.ParseFromString(out_b)
print(matchPlayInfo_out)
```
打印结果：
```
gameType: 3
stepInfoList {
chessIndex: 138
timeTag: 8
}
stepInfoList {
chessIndex: 139
timeTag: 8
}
stepInfoList {
chessIndex: 144
timeTag: 8
}
stepInfoList {
chessIndex: 209
timeTag: 5
}
………………
```
#### 构造加密：
```
improt yang_pb2
matchPlayInfo=yang_pb2.MatchPlayInfo()
matchPlayInfo.gameType=3
stepInfoList = yang_pb2.StepInfoList()
for i in range(1,297):
stepInfoList.chessIndex=i
stepInfoList.timeTag=i
matchPlayInfo.stepInfoList.append(stepInfoList)
out_b = matchPlayInfo.SerializeToString()
```
out_b结果：
```
b'\x08\x03"\x04\x08\x01\x10\x01"\x04\x08\x02\x10\x02"\x04\x08\x03\x10\x03"\x04\x08\x04\x10\x04"\x04\x08\x05\x10\x05"\…………
```
对out_b进行base64编码即得到结果
```
b64out_b = base64.b64encode(out_b)
print(b64out_b)
```
> b'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'
#### 用上述的解密方法对构造的加密解密：
```
matchPlayInfo_out = yang_pb2.MatchPlayInfo()
matchPlayInfo_out.ParseFromString(out_b)
print(matchPlayInfo_out)
```
matchPlayInfo_out结果：
```
gameType: 3
stepInfoList {
chessIndex: 1
timeTag: 1
}
stepInfoList {
chessIndex: 2
timeTag: 2
}
stepInfoList {
chessIndex: 3
timeTag: 3
}
stepInfoList {
chessIndex: 4
timeTag: 4
}
…………
stepInfoList {
chessIndex: 295
timeTag: 295
}
stepInfoList {
chessIndex: 296
timeTag: 296
}
``` 这篇帖子的目的只是探讨protobuf不是为了刷次数 子诺 发表于 2022-9-27 10:59
请问下楼主，这个方法我能够成功提交。但是为什么自己构造的数据不能刷通关次数，它们的通关次数 是什么原 ...
同样情况，感觉还是数据有不对 请问下楼主，这个方法我能够成功提交。但是为什么自己构造的数据不能刷通关次数，它们的通关次数 是什么原理？有没有知道的？ 感谢分享，blackboxprotobuf,这个玩意木有听说过，看看 学习了，谢谢 有没有php版本对这个进行实现的 为什么我解出来是这样的 厉害了。。。DUBBO的东西也破解了 看不懂啊这个咋使用的哦？ shutegame 发表于 2022-9-26 20:32
厉害了。。。DUBBO的东西也破解了
算不上破解正常使用 好像并未成功计算次数 楼主可以自己再试一下提交 不错的教程