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# HWSCTF

没有官方 WP💢😠

出了一道 animals, 另外两道是赛后看大佬 WP 复现的，一道安卓一道流量分析 主要是太摆了…

# Animals

image-20230715091543873

image-20230715093301804

image-20230715094922589

去花指令

image-20230715161145193

image-20230716122739861

image-20230716124344765

image-20230716190031257

image-20230716190118487

[+] Dump 0x608090 - 0x60809F (16 bytes) :

[0xDD, 0xB2, 0x6D, 0xF3, 0xE6, 0x0A, 0xC7, 0x83, 0x4A, 0x93, 0x50, 0xB4, 0xA4, 0x59, 0xAB, 0x0E]

魔改哈希算法

image-20230716154457847

#include <memory.h>
#include "md5.h"
 
unsigned char PADDING[]={0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
                         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
                         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
                         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
                         
void MD5Init(MD5_CTX *context)
{
     context->count[0] = 0;
     context->count[1] = 0;
     context->state[0] = 0xEFCDAB89;
     context->state[1] = 0x67452301;
     context->state[2] = 0x10325476;
     context->state[3] = 0x98BADCFE;
}
void MD5Update(MD5_CTX *context,unsigned char *input,unsigned int inputlen)
{
    unsigned int i = 0,index = 0,partlen = 0;
    index = (context->count[0] >> 3) & 0x3F;
    partlen = 64 - index;
    context->count[0] += inputlen << 3;
    if(context->count[0] < (inputlen << 3))
       context->count[1]++;
    context->count[1] += inputlen >> 29;
    
    if(inputlen >= partlen)
    {
       memcpy(&context->buffer[index],input,partlen);
       MD5Transform(context->state,context->buffer);
       for(i = partlen;i+64 <= inputlen;i+=64)
           MD5Transform(context->state,&input[i]);
       index = 0;        
    }  
    else
    {
        i = 0;
    }
    memcpy(&context->buffer[index],&input[i],inputlen-i);
}
void MD5Final(MD5_CTX *context,unsigned char digest[16])
{
    unsigned int index = 0,padlen = 0;
    unsigned char bits[8];
    index = (context->count[0] >> 3) & 0x3F;
    padlen = (index < 56)?(56-index):(120-index);
    MD5Encode(bits,context->count,8);
    MD5Update(context,PADDING,padlen);
    MD5Update(context,bits,8);
    MD5Encode(digest,context->state,16);
}
void MD5Encode(unsigned char *output,unsigned int *input,unsigned int len)
{
    unsigned int i = 0,j = 0;
    while(j < len)
    {
         output[j] = input[i] & 0xFF;  
         output[j+1] = (input[i] >> 8) & 0xFF;
         output[j+2] = (input[i] >> 16) & 0xFF;
         output[j+3] = (input[i] >> 24) & 0xFF;
         i++;
         j+=4;
    }
}
void MD5Decode(unsigned int *output,unsigned char *input,unsigned int len)
{
     unsigned int i = 0,j = 0;
     while(j < len)
     {
           output[i] = (input[j]) |
                       (input[j+1] << 8) |
                       (input[j+2] << 16) |
                       (input[j+3] << 24);
           i++;
           j+=4; 
     }
}
void MD5Transform(unsigned int state[4],unsigned char block[64])
{
     unsigned int a = state[0];
     unsigned int b = state[1];
     unsigned int c = state[2];
     unsigned int d = state[3];
     unsigned int x[64];
     MD5Decode(x,block,64);
     FF(a, b, c, d, x[ 0], 7, 0xd76aa478); /* 1 */
 FF(d, a, b, c, x[ 1], 12, 0xe8c7b756); /* 2 */
 FF(c, d, a, b, x[ 2], 17, 0x242070db); /* 3 */
 FF(b, c, d, a, x[ 3], 22, 0xc1bdceee); /* 4 */
 FF(a, b, c, d, x[ 4], 7, 0xf57c0faf); /* 5 */
 FF(d, a, b, c, x[ 5], 12, 0x4787c62a); /* 6 */
 FF(c, d, a, b, x[ 6], 17, 0xa8304613); /* 7 */
 FF(b, c, d, a, x[ 7], 22, 0xfd469501); /* 8 */
 FF(a, b, c, d, x[ 8], 7, 0x698098d8); /* 9 */
 FF(d, a, b, c, x[ 9], 12, 0x8b44f7af); /* 10 */
 FF(c, d, a, b, x[10], 17, 0xffff5bb1); /* 11 */
 FF(b, c, d, a, x[11], 22, 0x895cd7be); /* 12 */
 FF(a, b, c, d, x[12], 7, 0x6b901122); /* 13 */
 FF(d, a, b, c, x[13], 12, 0xfd987193); /* 14 */
 FF(c, d, a, b, x[14], 17, 0xa679438e); /* 15 */
 FF(b, c, d, a, x[15], 22, 0x49b40821); /* 16 */
 
 /* Round 2 */
 GG(a, b, c, d, x[ 1], 5, 0xf61e2562); /* 17 */
 GG(d, a, b, c, x[ 6], 9, 0xc040b340); /* 18 */
 GG(c, d, a, b, x[11], 14, 0x265e5a51); /* 19 */
 GG(b, c, d, a, x[ 0], 20, 0xe9b6c7aa); /* 20 */
 GG(a, b, c, d, x[ 5], 5, 0xd62f105d); /* 21 */
 GG(d, a, b, c, x[10], 9,  0x2441453); /* 22 */
 GG(c, d, a, b, x[15], 14, 0xd8a1e681); /* 23 */
 GG(b, c, d, a, x[ 4], 20, 0xe7d3fbc8); /* 24 */
 GG(a, b, c, d, x[ 9], 5, 0x21e1cde6); /* 25 */
 GG(d, a, b, c, x[14], 9, 0xc33707d6); /* 26 */
 GG(c, d, a, b, x[ 3], 14, 0xf4d50d87); /* 27 */
 GG(b, c, d, a, x[ 8], 20, 0x455a14ed); /* 28 */
 GG(a, b, c, d, x[13], 5, 0xa9e3e905); /* 29 */
 GG(d, a, b, c, x[ 2], 9, 0xfcefa3f8); /* 30 */
 GG(c, d, a, b, x[ 7], 14, 0x676f02d9); /* 31 */
 GG(b, c, d, a, x[12], 20, 0x8d2a4c8a); /* 32 */
 
 /* Round 3 */
 HH(a, b, c, d, x[ 5], 4, 0xfffa3942); /* 33 */
 HH(d, a, b, c, x[ 8], 11, 0x8771f681); /* 34 */
 HH(c, d, a, b, x[11], 16, 0x6d9d6122); /* 35 */
 HH(b, c, d, a, x[14], 23, 0xfde5380c); /* 36 */
 HH(a, b, c, d, x[ 1], 4, 0xa4beea44); /* 37 */
 HH(d, a, b, c, x[ 4], 11, 0x4bdecfa9); /* 38 */
 HH(c, d, a, b, x[ 7], 16, 0xf6bb4b60); /* 39 */
 HH(b, c, d, a, x[10], 23, 0xbebfbc70); /* 40 */
 HH(a, b, c, d, x[13], 4, 0x289b7ec6); /* 41 */
 HH(d, a, b, c, x[ 0], 11, 0xeaa127fa); /* 42 */
 HH(c, d, a, b, x[ 3], 16, 0xd4ef3085); /* 43 */
 HH(b, c, d, a, x[ 6], 23,  0x4881d05); /* 44 */
 HH(a, b, c, d, x[ 9], 4, 0xd9d4d039); /* 45 */
 HH(d, a, b, c, x[12], 11, 0xe6db99e5); /* 46 */
 HH(c, d, a, b, x[15], 16, 0x1fa27cf8); /* 47 */
 HH(b, c, d, a, x[ 2], 23, 0xc4ac5665); /* 48 */
 
 /* Round 4 */
 II(a, b, c, d, x[ 0], 6, 0xf4292244); /* 49 */
 II(d, a, b, c, x[ 7], 10, 0x432aff97); /* 50 */
 II(c, d, a, b, x[14], 15, 0xab9423a7); /* 51 */
 II(b, c, d, a, x[ 5], 21, 0xfc93a039); /* 52 */
 II(a, b, c, d, x[12], 6, 0x655b59c3); /* 53 */
 II(d, a, b, c, x[ 3], 10, 0x8f0ccc92); /* 54 */
 II(c, d, a, b, x[10], 15, 0xffeff47d); /* 55 */
 II(b, c, d, a, x[ 1], 21, 0x85845dd1); /* 56 */
 II(a, b, c, d, x[ 8], 6, 0x6fa87e4f); /* 57 */
 II(d, a, b, c, x[15], 10, 0xfe2ce6e0); /* 58 */
 II(c, d, a, b, x[ 6], 15, 0xa3014314); /* 59 */
 II(b, c, d, a, x[13], 21, 0x4e0811a1); /* 60 */
 II(a, b, c, d, x[ 4], 6, 0xf7537e82); /* 61 */
 II(d, a, b, c, x[11], 10, 0xbd3af235); /* 62 */
 II(c, d, a, b, x[ 2], 15, 0x2ad7d2bb); /* 63 */
 II(b, c, d, a, x[ 9], 21, 0xeb86d391); /* 64 */
     state[0] += a;
     state[1] += b;
     state[2] += c;
     state[3] += d;
}
#include <stdio.h>
#include <stdlib.h>
#include "md5.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
 
 void main( void ) 
 { 
    int read_len;
    int i ;
   char temp[8]={0};
    unsigned char digest[16]; // 存放结果 
     char hexbuf[128]={0};
     int len =0;
     for(int i=0;i<6;i++){
        for(int j=0;j<6;j++){
            for(int k=0;k<6;k++){
             for(int l=0;l<6;l++){
              for(int ii=0;ii<6;ii++){
               for(int jj=0;jj<6;jj++){
                for(int kk=0;kk<6;kk++){
                 for(int ll=0;ll<6;ll++){
                  for(int iii=0;iii<6;iii++){
                    int len=0;
                char    hexbuf[128]={0};
                    switch (i) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (j) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (k) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (l) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (ii) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (jj) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (kk) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (ll) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }           switch (iii) {
        case 0:
            hexbuf[len++]='c';
            hexbuf[len++]='a';
            hexbuf[len++]='t';
            break;
        case 1:
             hexbuf[len++]='d';
            hexbuf[len++]='o';
            hexbuf[len++]='g';
            break;
        case 2:
             hexbuf[len++]='f';
            hexbuf[len++]='o';
            hexbuf[len++]='x';
            break;
        case 3:
            hexbuf[len++]='p';
            hexbuf[len++]='a';
            hexbuf[len++]='n';
             hexbuf[len++]='d';
            hexbuf[len++]='a';
            break;
        case 4:
             hexbuf[len++]='d';
            hexbuf[len++]='r';
            hexbuf[len++]='a';
             hexbuf[len++]='g';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
            break;
        case 5:
             hexbuf[len++]='m';
            hexbuf[len++]='o';
            hexbuf[len++]='n';
             hexbuf[len++]='k';
            hexbuf[len++]='e';
            hexbuf[len++]='y';
            break;
        default:
            printf("Invalid choice\n");
            break;
    }     unsigned char decrypt[16]={0};  
    unsigned char decrypt32[64]={0};    
    MD5_CTX md5c; 
 int a;
     MD5Init(&md5c); // 初始化
     read_len = strlen(hexbuf);
    MD5Update(&md5c,(unsigned char *)hexbuf,read_len);  
 unsigned char ccmp[16]={0xDD, 0xB2, 0x6D, 0xF3, 0xE6, 0x0A, 0xC7, 0x83, 0x4A, 0x93, 0x50, 0xB4, 0xA4, 0x59, 0xAB, 0x0E};
     MD5Final(&md5c,decrypt); 
    
     if((decrypt[0]==ccmp[0])&&(decrypt[1]==ccmp[1])&&(decrypt[2]==ccmp[2])&&(decrypt[3]==ccmp[3])&&(decrypt[4]==ccmp[4])&&(decrypt[5]==ccmp[5])&&(decrypt[6]==ccmp[6])&&(decrypt[7]==ccmp[7])&&(decrypt[8]==ccmp[8])&&(decrypt[9]==ccmp[9])&&(decrypt[10]==ccmp[10])&&(decrypt[11]==ccmp[11])&&(decrypt[12]==ccmp[12])&&(decrypt[13]==ccmp[13])&&(decrypt[14]==ccmp[14])&&(decrypt[15]==ccmp[15])){
       printf("%s",hexbuf); 
        exit(0);
     }
        
        
        
     
    
        }
        }
        }
        }
        }
        }
        }
        }
    }
     
    return;
 }
image-20230716184927439


image-20230716185137499


安卓


jadx 打开没看到 main 突发奇想用查壳看看 (好像有什么不对 感觉很多混淆都被识别成加固了？)


image-20230715095548821


32 位的


https://github.com/CodingGay/BlackDex/releases


image-20230730232522932


脱了之后看不懂


好像不是这样做？


大佬说直接看 so 文件的加密然后解密就是 flag 我测


image-20230719163820868


直接看到 sm4 了…


再根据安装 APP 跳出的两个字符串直接解密 SM4 就行


赛后研究一下 SM4 加密


# USB 流量包分析


USB


image-20230715211437406


tshark -r misc1.pcapng -T fields -e usb.capdata > usbdata.txt
大佬的脚本得到键盘的输入的字符


import sys, argparse, os
class kbpaser:
    def __init__(self):
            #tshark 导出文件
        self.datafile="kbdatafile.txt"
        self.presses= []
        #Keyboard Traffic Dictionary
        self.normalKeys = {"04":"a", "05":"b", "06":"c", "07":"d", "08":"e", "09":"f", "0a":"g", "0b":"h", "0c":"i", "0d":"j", "0e":"k", "0f":"l", "10":"m", "11":"n", "12":"o", "13":"p", "14":"q", "15":"r", "16":"s", "17":"t", "18":"u", "19":"v", "1a":"w", "1b":"x", "1c":"y", "1d":"z","1e":"1", "1f":"2", "20":"3", "21":"4", "22":"5", "23":"6","24":"7","25":"8","26":"9","27":"0","28":"<RET>","29":"<ESC>","2a":"<DEL>", "2b":"\t","2c":"<SPACE>","2d":"-","2e":"=","2f":"[","30":"]","31":"\\","32":"<NON>","33":";","34":"'","35":"<GA>","36":",","37":".","38":"/","39":"<CAP>","3a":"<F1>","3b":"<F2>", "3c":"<F3>","3d":"<F4>","3e":"<F5>","3f":"<F6>","40":"<F7>","41":"<F8>","42":"<F9>","43":"<F10>","44":"<F11>","45":"<F12>"}
        #Press shift 
        self.shiftKeys = {"04":"A", "05":"B", "06":"C", "07":"D", "08":"E", "09":"F", "0a":"G", "0b":"H", "0c":"I", "0d":"J", "0e":"K", "0f":"L", "10":"M", "11":"N", "12":"O", "13":"P", "14":"Q", "15":"R", "16":"S", "17":"T", "18":"U", "19":"V", "1a":"W", "1b":"X", "1c":"Y", "1d":"Z","1e":"!", "1f":"@", "20":"#", "21":"$", "22":"%", "23":"^","24":"&","25":"*","26":"(","27":")","28":"<RET>","29":"<ESC>","2a":"<DEL>", "2b":"\t","2c":"<SPACE>","2d":"_","2e":"+","2f":"{","30":"}","31":"|","32":"<NON>","33":"\"","34":":","35":"<GA>","36":"<","37":">","38":"?","39":"<CAP>","3a":"<F1>","3b":"<F2>", "3c":"<F3>","3d":"<F4>","3e":"<F5>","3f":"<F6>","40":"<F7>","41":"<F8>","42":"<F9>","43":"<F10>","44":"<F11>","45":"<F12>"}
    def tshark_do(self, pcapfile, filterfield, fieldvalue):
        if os.name == "nt":
            if filterfield is not None:
                command = f"tshark -r {pcapfile} -Y {filterfield} -T fields -e {fieldvalue} > {self.datafile}"
            else:
                command = f"tshark -r {pcapfile} -T fields -e {fieldvalue} > {self.datafile}"
            try:
                os.system(command)
                print("tshark执行语句：" + command)
                print("[+] Found : tshark导出数据成功")
            except:
                print("tshark执行语句：" + command)
                print("[+] Found : tshark导出数据失败")
            
        elif os.name == "posix":
            #sed '/^\s*$/d' 主要是去掉空行
            if filterfield not in None:
                command = f"tshark -r {pcapfile} -Y {filterfield} -T fields -e {fieldvalue} | sed '/^\s*$/d' > {self.datafile}"
            else:
                command = f"tshark -r {pcapfile} -T fields -e {fieldvalue} | sed '/^\s*$/d' > {self.datafile}"
            
            try:
                os.system(command)
                print("tshark执行语句：" + command)
                print("[+] Found : tshark导出数据成功")
            except:
                print("tshark执行语句：" + command)
                print("[+] Found : tshark导出数据失败")
    
    #筛掉无用数据，改变数据格式
    def formatkbdata(self):
        formatfile = open("formatKbdatafile.txt","w")
        with open(self.datafile, "r") as f:
            for i in f:
                # if len(i.strip("\n")) == 8:
                #     Bytes = [i[j:j+2] for j in range(0, len(i.strip("\n")), 2)]
                #     data = ":".join(Bytes)
                #     formatfile.writelines(data+"\n")
                if len(i.strip("\n")) == 16:
                    Bytes = [i[j:j+2] for j in range(0, len(i.strip("\n")), 2)]
                    data = ":".join(Bytes)
                    formatfile.writelines(data+"\n")
        formatfile.close()
    def jiemi(self):
        print("\n-----开始解密Tshark导出的键盘数据-----\n")
        # 读取数据 z
        with open("formatKbdatafile.txt", "r") as f:
            for line in f:
                self.presses.append(line[0:-1]) #去掉末尾的 \n
        # 开始处理
        result = []
        for press in self.presses:
            if press == '':
                continue
            #thark 版本原因，导出数据格式不同
            if ':' in press:
                Bytes = press.split(":")
            else:
                #两两分组
                Bytes = [press[i:i+2] for i in range(0, len(press), 2)]
                print(Bytes)
            if Bytes[0] == "00":
                if Bytes[2] != "00" and self.normalKeys.get(Bytes[2]):
                    result.append(self.normalKeys[Bytes[2]])
                    # print(result)
            elif int(Bytes[0],16) & 0b10 or int(Bytes[0],16) & 0b100000: # shift key is pressed.
                if Bytes[2] != "00" and self.normalKeys.get(Bytes[2]):
                    # result.append(self.normalKeys[Bytes[2]])
                    result.append(self.shiftKeys[Bytes[2]])
            else:
                print("[-] Unknow Key : %s" % (Bytes[0]))
        print("[+] USB_Found : %s" % (result))
        # print(type(result))
        flag = 0
        for i in range(len(result)):
            try:
                a = result.index('<DEL>')
                del result[a]
                del result[a - 1]
            except:
                pass
        for i in range(len(result)):
            try:
                if result[i] == "<CAP>":
                    flag += 1
                    result.pop(i)
                    if flag == 2:
                        flag = 0
                if flag != 0:
                    result[i] = result[i].upper()
            except:
                pass
        
        # print ('\n [+] 键盘数据 output :' + "".join (result))
        # 删除提取数据文件
        rm_stat = eval(input(f"-----是否删除tshark导出的文件 \"{self.datafile}\", 1 or 0-----\n"))
        if rm_stat == 1:
            os.remove(self.datafile)
if __name__ == "__main__":
    #我的 vscode 工作区的原因，需要切换到当前目录
    pwd = os.path.dirname(__file__)
    os.chdir(pwd)
    BANNER = r"""                                                                                                                                
    //   / / //   ) )  //   ) )                                           
   //   / / ((        //___/ /   ___      __      ___      ___     / ___  
  //   / /    \\     / __  (   //   ) ) //  ) ) //   ) ) //   ) ) //\ \   
 //   / /       ) ) //    ) ) //       //      //   / / //       //  \ \  
((___/ / ((___ / / //____/ / ((____   //      ((___( ( ((____   //    \ \ 
                                                                @MAY1AS
"""
    print(BANNER)
    argobject = argparse.ArgumentParser(prog="UsbKbCracker", description="""This is a script for decrypt UsbKeyboardData
    """)
    argobject.add_argument('-f', "--pcapfile", required=True, help="here is your capturedata file")
    argobject.add_argument('-e', "--fieldvalue", required=True, help="here is your output_format")
    argobject.add_argument('-Y', "--filterfield", help="here is your filter")
    arg = argobject.parse_args()
    kbparser = kbpaser()
     # tshark 导出数据，存储在 usbdatafile.txt 内
    kbparser.tshark_do(pcapfile=arg.pcapfile, fieldvalue=arg.fieldvalue, filterfield=arg.filterfield)
    kbparser.formatkbdata()
    kbparser.jiemi()
得到键盘输入后解 base85


      

          
      

  


   


    

  
    
      
    
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