2023安洵杯SYCCTF 部分WP

Misc

sudoku_easy

复制代码

import sys

def read_file(textfile):
        f=open(textfile,'r')
        next(f)
        i=0
        j=0
        matrix=[[0 for x in range(9)] for y in range(9)]
        #print(matrix)
        while True:
                j=0
                char=f.readline()
                for c in char:
                        matrix[i][j]=int(c)
                        #print(i,j)
                        j=j+1
                        if j==9:
                                i=i+1
                                break
                if i==9:
                        break
        return matrix

def check_soduku(row,column,number,matrix_board):
        check=0
        for i in range(0,9):
                if matrix_board[row][i]==number:
                        check=1
        for i in range(0,9):
                if matrix_board[i][column]==number:
                        check=1
        row=row-row%3
        column=column-column%3

        for i in range(0,3):
                for j in range(0,3):
                        if matrix_board[row+i][column+j]==number:
                                check=1
        if check==1:
                return False
        else:
                return True

class calls:
        number_of_calls=0
c = calls()
def sudoku_solver(matrix):
        c.number_of_calls=c.number_of_calls+1
        break_condition=0
        for i in range(0,9):
                for j in range(0,9):
                        if matrix[i][j]==0:
                                break_condition=1
                                row=i
                                column=j
                                break
        #print(matrix)
        #print(break_condition)
        if break_condition==0:
                print("Naive Backtracking Algorithm Solution: ")
                for i in matrix:
                        print(i)
                print("Amount of Recursions")
                print(c.number_of_calls)
                exit(0)

        #print("hello")
        for i in range(0,10):
                if check_soduku(row,column,i,matrix):
                        matrix[row][column]=i
                        if sudoku_solver(matrix):
                                return True
                        matrix[row][column]=0
        return False

matrix=read_file(sys.argv[1])
sudoku_solver(matrix)

#print("'''''''''''''''''''''''''''''''''''''''''''''''''''''''matrix'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''")
#print(matrix)

sudoku_speedrun

复制代码

import telnetlib
import sys
fuck = []
def move(noooo,jie,tn):
    x1=0
    y1=0
    print(jie)
    for y in range(len(noooo)):
        for x in range(len(noooo[y])):
            
            if noooo[y][x] == 0:
                if x > x1:
                    for d in range(x - x1):
                        tn.write(b'D')
                
                else:
                    for d in range(x1 - x):
                        tn.write(b'A')
                x1 = x
                if y > y1:
                    for d in range(y - y1):
                        tn.write(b'S')
                else:
                    for d in range(y1 - y):
                        tn.write(b'W')
                y1 = y
                
                tn.write(str(jie[y][x]).encode())
    print(tn.read_all().decode())
def check_soduku(row,column,number,matrix_board):
        check=0
        for i in range(0,9):
                if matrix_board[row][i]==number:
                        check=1
        for i in range(0,9):
                if matrix_board[i][column]==number:
                        check=1
        row=row-row%3
        column=column-column%3

        for i in range(0,3):
                for j in range(0,3):
                        if matrix_board[row+i][column+j]==number:
                                check=1
        if check==1:
                return False
        else:
                return True
class calls:
        number_of_calls=0
c = calls()
def sudoku_solver(matrix):
        c.number_of_calls=c.number_of_calls+1
        break_condition=0
        for i in range(0,9):
                for j in range(0,9):
                        if matrix[i][j]==0:
                                break_condition=1
                                row=i
                                column=j
                                break
        #print(matrix)
        #print(break_condition)
        if break_condition==0:
                print("Naive Backtracking Algorithm Solution: ")
                global fuck
                fuck = matrix
                return fuck
                print("Amount of Recursions")
                print(c.number_of_calls)
                exit(0)

        #print("hello")
        for i in range(0,10):
                if check_soduku(row,column,i,matrix):
                        matrix[row][column]=i
                        if sudoku_solver(matrix):
                                return True
                        matrix[row][column]=0
        return False

tn = telnetlib.Telnet("47.108.165.60",port=25894,timeout=40)
tn.set_debuglevel(2)
print(tn.read_very_eager())
tn.write(b'1\n')
tn.write(b'7\n')
tn.write(b'r\n')
list = tn.read_until(b'Retstart the game? (Y):').decode() 
tn.write(b'y\n')
newlist = list[250:len(list)-24]
sudo = []
noooo = []
line = []
line1 = []
lin_b = ''
for i in range(len(newlist)):
    if '0' <= newlist[i] <= '9':
        lin_b = lin_b + newlist[i]

lin_b = lin_b.replace('7320','')
lin_b = lin_b.replace('1320','')   
lin_b = lin_b.replace('732','')
for i in lin_b:
    line.append(int(i))
    line1.append(int(i))
    if len(line)  == 9:
        sudo.append(line)
        noooo.append(line1)
        line = []
        line1 = []
print(noooo)

sudoku_solver(sudo)
move(noooo,fuck,tn)
    

烦人的压缩包

暴力破解

图片提取出压缩包后okk解密即可

RE

easythread

反调试绕过一下 动态调试一下，看了眼只有异或，直接替换数据。

SYC{Th1s_is_@_EasY_3ncryptO!!!!}

3d_maze

三维地图，一共五层，z轴的跳转有特定规律，直接提取地图手跑（提取地图识要把byte转换为dd）