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[原创] KCTF 第六题 Writeup
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发表于: 2022-11-28 16:14 6613
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写了一个丑陋的爆破脚本hh
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | #include <stdio.h> #include <stdlib.h> #include <string.h> int check(unsigned int * cmp ){ for ( int i = 0 ;i< 20 ;i + + ){ if ( cmp [i] ! = rand()){ return 0 ; } } return 1 ; } int main() { unsigned char print [] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!\"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~" ; unsigned char tmp[ 8 ]; unsigned int cmp1[ 20 ] = { 0x00003BFC , 0x00002173 , 0x000025BB , 0x0000380B , 0x00002C13 , 0x000075BE , 0x00007366 , 0x000046A3 , 0x000013C1 , 0x0000159B , 0x00005B5F , 0x0000534F , 0x00004E37 , 0x00003A04 , 0x00001301 , 0x00005D0C , 0x00004155 , 0x000048E9 , 0x000061D2 , 0x00006158 }; unsigned int cmp2[ 20 ] = { 0x00002BB6 , 0x00006B5A , 0x000003D4 , 0x0000152B , 0x00006E04 , 0x0000254C , 0x000040AE , 0x000056CA , 0x000017E1 , 0x000055C7 , 0x00003641 , 0x00002D3C , 0x00000A41 , 0x00004BC5 , 0x00006233 , 0x00001FE7 , 0x00006E05 , 0x00000F6E , 0x00006398 , 0x00006AD7 }; memset(tmp, 0 , 8 ); for ( int a = 0 ; a < strlen( print ); a + + ) { tmp[ 0 ] = print [a]; for ( int b = 0 ; b < strlen( print ); b + + ) { tmp[ 1 ] = print [b]; for ( int c = 0 ; c < strlen( print ); c + + ) { tmp[ 2 ] = print [c]; for ( int d = 0 ; d < strlen( print ); d + + ) { tmp[ 3 ] = print [d]; for ( int e = 0 ; e < strlen( print ); e + + ) { tmp[ 4 ] = print [e]; int num = atoi(tmp); srand(num); if (check(cmp2)){ printf( "%s" ,tmp); exit( 0 ); } } } } } } } |
[招生]科锐逆向工程师培训(2024年11月15日实地,远程教学同时开班, 第51期)
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