SHCTF Week2 Android？Harmony！

这是我做的第一题Harmony应用逆向，感觉很有教学意义，在此做一个知识分享
下载附件拿到的是一个.app文件，我们可以把后缀改成zip进行解压会得到一个.hap文件和一个pack.info文件
.hap文件就是鸿蒙系统软件的安装包格式
我们再把这个.hap文件后缀名改成zip进行就能得到鸿蒙应用的完整结构，其实和安卓的结构也差不多。

文件结构

ets目录里面存放的.abc文件就是源码文件和安卓里面的dex文件差不多
resources里面放的就是一些资源文件
pack.info里面则是描述了软件包中的每个Hap的属性

{
    "summary": {
        "app": {
            "bundleName": "com.welcome.shctf",      //软件名
            "bundleType": "app",
            "version": {
                "code": 1000000,
                "name": "1.0.0"
            }
        },
        "modules": [
            {
                "mainAbility": "EntryAbility",
                "deviceType": [
                    "phone"
                ],
                "abilities": [
                    {
                        "name": "EntryAbility",
                        "label": "$string:EntryAbility_label"
                    }
                ],
                "extensionAbilities": [
                    {
                        "name": "EntryBackupAbility",
                        "forms": []
                    }
                ],
                "distro": {
                    "moduleType": "entry",
                    "installationFree": false,
                    "deliveryWithInstall": true,
                    "moduleName": "entry"
                },
                "apiVersion": {
                    "compatible": 12,
                    "releaseType": "Beta3",
                    "target": 12
                }
            }
        ]
    },
    "packages": [
        {
            "deviceType": [
                "phone"          //用于标识支持设备类型
            ],
            "moduleType": "entry",    //模块类型，有entry或feature两种
            "deliveryWithInstall": true,      //用于标识该HAP是否需要在主动安装时进行安装
            "name": "entry-default"
        }
    ]
}

module.json文件里面存放的应该是一些资源绑定和一些版本信息，具体我也不是很清楚，网上的资料太少了。

程序反编译

接下来就是需要对ets里面的abc文件进行反编译
经过我不断的百度，找到了一款不错的反编译工具。
jadx-gui-dev-all.jar
https://github.com/ohos-decompiler/abc-decompiler/releases
这是它的项目地址
和平常的jadx不一样，它可以将abc文件反编译为java代码，当然也有一些在线反编译的网站
不过我感觉这个jadx蛮好用的

这里是它的一个主体逻辑
整个流程就是，获取输入，调用encode，然后与密文进行check。
正确的话就会生成一个What文件，里面存放的是含有flag的迷宫。
我们去看一下encode方法

爆破口令

一些数学运算，并且是逐字符加密，可以把算法抄下来进行爆破

这是密文

from string import printable
def Encrypt(input_str):
    return chr((((114514 * (ord(input_str) - 32)) + 1919810) % 95) + 32)

passwd = ""
# 使用示例
num = 0
enc = r"[f#fLw)??Pz?#9w)Du[ks[q[#w4D?4P4UJf,kU[f.rDkfwrDtq...)?J.#rP4[qrPDJkkJ|.9J|qffU?k|D4P4P[wkk.)k?JUJ[k#9kww[r??wUfw|PkrPUf.P#f.P#.PwJ4f4q.PU4UPDr9.[9fJ#PqP)cDDffJPDrJ.J4qPP[r[.JfJ4f|?U9#"
for i in range(len(enc)):
    for j in printable:
        if Encrypt(j)==enc[i]:
            num += 1
            passwd += j
            break
print(len(enc))
print(num)
print(passwd)

模拟应用

拿到正确口令，用模拟器去验证一下然后把What文件dump下来
模拟器用DevEco Studio，具体安装方法不做讲解。
直接把hap文件拖到DevEco Studio里面的模拟器即可安装

口令正确并成功生成文件
我们去dump到本地

生成了一个带flag的地图，这个地图实际是和反编译出来的地图是一样的

不过把flag加入到了地图当中
我们找一下入口和终点，写个dfs
S是入口E是终点

不过地图里面有两个S，正确的入口其实不是maze[1][83]
而是maze[3][83]这个

把空的地图拿出来，把墙替换成1，路替换成0然后跑dfs

maze = [
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1],
[1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1],
[1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1],
[1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1],
[1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1],
[1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1],
[1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1],
[1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1],
[1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1],
[1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1],
[1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1],
[1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1],
[1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1],
[1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1],
[1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1],
[1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1],
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[1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1],
[1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]]

usedmap = [[0]*len(maze[0]) for i in range(len(maze))]
flag=''
def dfs(x,y):
    global flag
    if x==77 and y==1:
        print(flag)
        return
    if maze[x+1][y]==0 and usedmap[x+1][y]==0:
        usedmap[x][y]=1
        flag+='s'
        dfs(x+1,y)
        flag=flag[:-1]
        usedmap[x][y]=0
    if maze[x-1][y]==0 and usedmap[x-1][y]==0:
        usedmap[x][y]=1
        flag+='w'
        dfs(x-1,y)
        flag=flag[:-1]
        usedmap[x][y]=0
    if maze[x][y+1]==0 and usedmap[x][y+1]==0:
        usedmap[x][y]=1
        flag+='d'
        dfs(x,y+1)
        flag=flag[:-1]
        usedmap[x][y]=0
    if maze[x][y-1]==0 and usedmap[x][y-1]==0:
        usedmap[x][y]=1
        flag+='a'
        dfs(x,y-1)
        flag=flag[:-1]
        usedmap[x][y]=0

dfs(3,83)

得到路径去遍历一下含有flag字符的地图，把flag提取出来

maze = '''###################################################################################### #     #         #       #  b  #                 #       #   #   #   #   #        S## # ### # ######### ##### # # ### ############### # ##### ### # # # # ### # ####### ## #4  # # #   #   #     # # #    c#               #   # #   #  4#   #     # #   #  S## # # # # # # # # ####### # ##### # ################# # ### ### ########### # ### # ## # # # # # #   # #       # #     #       #     #     #   #   # #  2  #     # #   # ## # ### # # ##### # ####### # ########### # ### # ####### ### # ### # # ##### # ######  0#   # # #    3  #     # # #         #   # #  3  #   #   # #     #1  #   #  H    #### # ### # # ####### ### # # # ############# ##### # # ### # ####### ### ######### ##   #3  #   #     #   #  c  # #    f  #      2#  0  # #8  #   #     #   #  C        ## ### # ######### # ### ##### ##### ### ##### ### ### # ####### ### ### ### ########## #   # #    b    # #   #   # #   #     #  9  #   #   # #   #   # # # # #  T  # #   ## # ##### ### ##### # ##### # # # ######### ### ####### # # # ### # # # # ### # # # ## # #    b  # #   # # #   #   # #  e    #   # #        b# # # #  c# #   # #   # # # #### # ####### # ### ### # ##### ### ##### ### ######### # # ### # # ##### ##### # ####   #   #   # #2   a 8  #       #  3#    a# # #       #   # #   # #     #     # #   ## ##### # # # # ##### ########### # # ### # # # ##### ##### # ### ##### ##### # ### ##     # # # # # #  1  #     #  a  # # #   #  6# #   # #   #  d  #  4  #   # #F  # # ###### # # # # # ### ### ### ### ### ### ##### # # # # # ####### ### ##### # # ### # ##     #   # # # #   # # # #9  # # #     #     # # #   # #   # #   #   # # # # #  6# ## ######### # # # ### # # # # # # ####### ##### # ##### # # # ### ### # # # # # # # ##b          #   #4  #5  #   # #  -#  8  #9 4    # #     # # # #   #   #2 - 8 {  # # ## ############### ### ########### # # # # # ##### # ##### # # # ### ### ### ##### # ## #  e  #   #   #     #  5      # # # # # # #   #   #     #  5#5  #   #   #   #   # ## ### # # # # # ####### # ##### ### # # ### # # ##### ####### # # ### ### ### # ### ## #   # # #   # #     # # #   # #   # #     # # # #  0#       # #   # #   # # #   # ## # ### # ##### # ### # ### # # # ########### # # # # # ####### ##### # ### # ### # ## # #   #     #3  # #d  #   #   #     #     # #  5  # #  c    #   #   # #   # # # # ## ### ####### # ### # ### ########### # ### # ####### ### ####### # ### # ### # # # ##    -#       # # #   #   #   # #     # #   #  1    # #   #   #   #a  # #   # # #   ###### # ####### # ######### # # # ##### # ##### ##### # ### # # ### ### ### # # ###### #   #   #     #  b  #   # #  e#-    # #       #   # # # # # # # # #   # #  1#8    ## # ##### # ####### # # # # ### # ##### ######### # ### # # ### # # # ### ### # ### ## # #     # #     # #   # #   #d 9  #   #   #     # #   #9 d  #  7#   #  5#  f# # # ## # # ##### # ### # ######### # ##### ##### # ##### # ### ### ### ####### # # # # # ##  d# #   #   #  7# #    e    #     #     #   #    4  #  4  # #   #      6  # # #   #### # # ######### # ##### ######### ##### ############# ### ### ### ########### ######   #3  #       # # #   #     #     #     # #       #   # #   # #   #   #      9    ## ### ### ##### # # # # ####### ##### ##### # ##### # ### ### # # ### # ########### ##7  # #  8  #   #   # # # #   #     #   #  a  #   #   #  1# #   #     #a      #   # ## # # ##### # ####### # # # # ##### ### # ####### ##### # # ########### ##### # ### ## #   #    1# # #   # # # # #       # # #       #   #   #  b#     #   # #   #   #   ## ##### ### # # # # ### # # ######### # ####### ### # ##### # ##### # # # ####### ####     #   # # # # # #  2  #   #       #   #   #    9#   # #   #   # #   #     # #9  ###### ##### # # # # # ####### # ######### # # ##### ### # ##### # # ######### # # # ##     #     #5  # #   #   #  0  #   #   #   # #   #  9  # #    3# #  d  #    6#d  # ## ##### ##### ### ##### # # ##### # # ####### # ##### ### # ### # ### ### ### # ###### # #   #   # # # #   # # #   #   # # #   # #b  #   #   #   #  9#   #   # #   #c    ## # # ##### # # # # # ### ### # ### # # # # # ### # ### ##### # ### ### # # ### ### ## # # #  f  # # # # #   #    9# #   #2  #  2 b    #     #   # #   #   #   #   # #   ## # # # # ### # # # ### ##### ### ### ##################### # ### ########### # # ####   # # #   #-  #  3  #3 2  #   #     #     #         # #  6  # #     #   #   # #   ###### # ### # ####### # # ##### ####### ### # ####### # # ##### ##### # ### ### ### ##    4# #  2  #       # # #   #7  #     # # #       #  1#     # #   #9 -#   #   # # ## ### # ### ### ####### ### # # # # ##### # ####### ### ##### # # # # # # ####### # ##   # #   #     #     #1    #  6# # #   #  4    #  5# #   # #1  # #   # #     #  c  #### # ### ####### ##### ####### # # # # ######### # # ### # # ### ##### ##### # ######   #   # #     #     # #       # #4  # #   #     # # #   #   # #   #  5      #     ########## # ### ##### # # ######### ##### # # ####### # ####### ### ############### ##   #   # # # # #  1  # # # #     #  c  # #  5 1      # #   #  2#  d         a      ## # # # # # # # ### ### # # # ### ### # # ##### ####### # # ### ############# ######## # # #   #   #4  # #   #a e# # # #   #   #   #       #   #5   1  #   #       #     ## # # ######### # # # ### # # # # ######### # ####### ##### ##### # ### ####### ### ## # #   #   #   #  6  #   # # # #     #   # # #  a    #   #   #   #   #6    #   #   ## # ### ### ########### ### # # ##### # ### # # # ##### ##### ####### # ### # ### #### #1  #   #     #     # # # #  8    # #   # #   #     # #     #     #   #  -  # #   ## # # ### ##### # ### # # # ######### ### # ######### # # ##### ### ##### ##### ### ## # # #   #    f 5#   #   #         #    b  #   #     # #f    # #   #   #     #    4## # ### ### ##### # ############### ##### ### # # ##### # ### ### ### ####### ##### ## #     # # #     # #   #          d  #  c  # # # #   # #   #1  # #  e#   #   #  1  ## ####### # # ##### # ### ############# ### # ### # # # ##### # # # # # # # ### # ####   #   #  0# #   # #   # #   #   #     #   #     # # # #     #   # #   # # #   #   #### ### ### # # # # ### # # ### # # ##### ########### # # ######### ##### ### ##### ##  }  #     # # #   #   #  8   8# # #   #    4  #   # # #4  #   #   # #   #   # #  d###### ####### ####### ######### # # # ####### ### # # # # ### # # ### # ### ### # # ##   # #     #    1  #  8  #     #-  #        d  # #  5#   #   #   #  d#a    #   # # ## # # # ### ##### # ### # # ##### ########### # ##### ##### ####### # # ##### ### ####E#   # # # #  e  #   # #  1  #  1    #   #   #   #  b -    #  b    # # #    5  #d  ## ##### # # ### ##### # ### # # ##### # # ####### # ### ##### # ##### # ####### # # ## #    4#   #   #   # # #   # # #   # # # #     # #d  # #     # # #   #   #    a# # ## ##### ##### ### # # # # ##### # # # ### # ##### # # # # ##### # # ##### # ### # ####  4   7  #  3# # #   # # #    6  # #     #       # # # # #   # #   #  f  # # # #c  #### ####### # # # ##### # # ####### ################# # ##### # ##### # ### # # # # ##   #       #   #       # #       #                   #       #       #   #   #   # ######################################################################################'''

m_l = []
for i in range(len(maze)//8):
    m_l.append(maze[i*85:(i+1)*85])

print(m_l)
# step = "aassaassddddssaaaaaaaassaassssddddssssssaassddssssssssssaassaaaaaaaassaassddddwwddssssssaawwaassssddssddssddwwwwddddssaassddssaassaassddddssaaaaaawwwwaassaawwaassssddssddddddddddssaaaaaassddddssddwwddwwddddssaassddssssaaaassaassaassaaaawwddwwwwaassaawwaassssaassaawwaassaassaaaaaaaassddssssaaaaaaaaaaaaaaaaaawwwwaassaawwwwddwwwwwwaassaaaaaawwwwddddddddddwwaaaaaaaawwwwwwaawwwwddddddwwaawwaassaaaawwwwwwaawwaassssddssaaaaaassaaaawwwwaawwaassssssddssssssaawwaassssddssddssaassaaaawwwwwwwwwwaassssssssssssddss"
step = "aassaassddddssaaaaaaaassaassssddddssssssaassddssssssssssaassaaaaaaaassaassddddwwddssssssaawwaassssddssddssddwwwwddddssaassddssaassaassddddssaaaaaawwwwaassaawwaassssddssddddddddddssaaaaaassddddssddwwddwwddddssaassddssssaaaassaassaassaaaawwddwwwwaassaawwaassssaassaawwaassaassaaaaaaaassddssssaaaaaaaaaaaaaaaaaawwwwaassaawwwwddwwwwwwaassaaaaaawwwwddddddddddwwaaaaaaaawwwwwwaawwwwddddddwwaawwaassaaaawwwwwwaawwaassssddssaaaaaassaaaawwwwaawwaassssssddssssssaawwaassssddssddssaassaaaawwwwwwwwwwaassssssssssssddssddssssaawwaass"
x = 3
y = 83
flag = ""
for i in step:
    if i == "w":
        x -= 1
    elif i =="a":
        y -=1
    elif i=="d":
        y += 1
    else:
        x += 1
    flag += m_l[x][y]
print("S",end="")
for i in flag:
    if i !=" ":
        print(i,end="")

SHCTF{81f6ad65-9da6-41ae-bd61-88dea61332f1}

感谢师傅们的观看