Small Counter#

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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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void flag_gen(char *param_1, char *param_2, int param_3){
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    char lowercase[27] = "abcdefghijklmnopqrstuvwxyz";
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    char uppercase[27] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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    char shifted_lowercase[27] = {0};
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    char shifted_uppercase[27] = {0};
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    int local_24, local_1c, local_20;
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    char local_25;
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    for (local_20 = 0; local_20 < 26; local_20++){
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        shifted_lowercase[(local_20 + param_3) % 26] = lowercase[local_20];
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        shifted_uppercase[(local_20 + param_3) % 26] = uppercase[local_20];
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    }
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    shifted_lowercase[26] = '\0';
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    shifted_uppercase[26] = '\0';
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    printf("Shifted Lowercase: %s\n", shifted_lowercase);
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    printf("Shifted Uppercase: %s\n", shifted_uppercase);
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    local_24 = 0;
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    while (local_24 < strlen(param_1)){
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        local_25 = param_1[local_24];
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        if (islower(local_25)){
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            param_2[local_24] = shifted_lowercase[local_25 - 'a'];
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        }
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        else if (isupper(local_25)){
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            param_2[local_24] = shifted_uppercase[local_25 - 'A'];
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        }
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        else if (isdigit(local_25)){
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            local_1c = ((int)local_25 * (param_3 + 3)) % 9;
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            if (local_1c < 8 || local_1c > 9){
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                local_1c += 0x32;
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            }
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            else{
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                local_1c += 0x28;
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            }
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            param_2[local_24] = (char)local_1c;
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        }
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        else{
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            param_2[local_24] = local_25;
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        }
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        local_24++;
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    }
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    param_2[local_24] = '\0';
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}
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int main(void){
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    char local_a8[80];
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    char flag_part[] = {
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        0x49, 0x4d, 0x7b, 0x35, 0x30, 0x38, 0x38, 0x38,
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        0x39, 0x6a, 0x33, 0x32, 0x6a, 0x38, 0x37, 0x6a,
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        0x39, 0x6a, 0x67, 0x35, 0x34, 0x36, 0x35, 0x30,
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        0x38, 0x34, 0x30, 0x34, 0x32, 0x38, 0x68, 0x6a,
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        0x68, 0x69, 0x32, 0x69, 0x69, 0x30, 0x38, 0x68,
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        0x37, 0x34, 0x69, 0x68, 0x6a, 0x35, 0x33, 0x38,
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        0x68, 0x35, 0x34, 0x33, 0x6a, 0x37, 0x67, 0x36,
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        0x6b, 0x35, 0x6a, 0x6b, 0x38, 0x6a, 0x69, 0x68,
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        0x32, 0x32, 0x66, 0x7d, 0x00};
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    for (auto const &x : flag_part){
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        printf("%c", x);
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    }
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    printf("\n");
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    puts("Nice!");
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    flag_gen(flag_part, local_a8, 5);
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    printf("\n%s\n", local_a8);
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    return 0;
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}

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DH{389998e56e90e8eb34238948469cecd6dd89c04dce359c345e0b2f3ef9edc66a}