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proof-of-work-solver
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Add solver.c

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Joseph 2024-10-25 18:47:53 +00:00
parent 41eb0a0661
commit 6791c6752e
1 changed files with 104 additions and 0 deletions
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <time.h>
int check_utility(const char *utility) {
return (system(utility) == 0);
}
unsigned long hex_to_int(const char *hex) {
return strtoul(hex, NULL, 16);
}
void elapsed_time(time_t start_time) {
time_t current_time = time(NULL);
printf("\rElapsed Time: %ld seconds.", current_time - start_time);
fflush(stdout);
}
int main(int argc, char *argv[]) {
const char *required_utils[] = {"argon2", "xxd", "bc"};
for (int i = 0; i < 3; i++) {
if (!check_utility(required_utils[i])) {
printf("%s is not installed. Please install it and try again.\n", required_utils[i]);
return 1;
}
}
char challenge[100];
if (argc < 2) {
printf("Enter Challenge Code: ");
fgets(challenge, sizeof(challenge), stdin);
} else {
strcpy(challenge, argv[1]);
}
// Trim newline character
challenge[strcspn(challenge, "\n")] = 0;
// Validate the challenge format
if (sscanf(challenge, "%*[^:]:%*[^:]:%*[^:]:%*[^:]") != 4) {
printf("Invalid challenge format. Expected format: memory_cost:time_cost:salt:difficulty\n");
return 2;
}
// Parse challenge code
int memory_cost, time_cost, difficulty;
char salt[100];
sscanf(challenge, "%d:%d:%[^:]:%d", &memory_cost, &time_cost, salt, &difficulty);
// Debugging output
printf("Memory Cost: %d\n", memory_cost);
printf("Time Cost: %d\n", time_cost);
printf("Salt: %s\n", salt);
printf("Difficulty: %d\n", difficulty);
// Generate prefix for the password
char pw_prefix[100];
snprintf(pw_prefix, sizeof(pw_prefix), "UNBLOCK-%08x-", rand() % 0xFFFFFFFF);
unsigned long difficulty_raw = (unsigned long)exp(log(256) * (4 - log(difficulty) / log(256)));
printf("Estimated iterations: %d\n", difficulty);
printf("Time Cost: %d\n\n", time_cost);
int n = 1;
time_t start_time = time(NULL);
// Main loop to find the solution
while (1) {
char pw[100];
snprintf(pw, sizeof(pw), "%s%d", pw_prefix, n);
char command[256];
snprintf(command, sizeof(command), "echo -n '%s' | argon2 %s -t %d -k %d -p 1 -id -v 13 -r", pw, salt, time_cost, memory_cost);
// Execute command and get hash result
FILE *fp = popen(command, "r");
if (!fp) {
printf("Failed to run command\n");
exit(1);
}
char hash_result[256];
fgets(hash_result, sizeof(hash_result), fp);
pclose(fp);
char hash_bytes[9];
strncpy(hash_bytes, hash_result + 3, 8); // Extract the first 8 bytes from the hash result
hash_bytes[8] = '\0'; // Null-terminate
if (hex_to_int(hash_bytes) < difficulty_raw) {
printf("\nSOLUTION FOUND\n");
printf("Your unblock code is: %s\n", pw);
printf("This is the code you enter into the site to pass the challenge.\n\n");
break;
} else {
elapsed_time(start_time);
n++;
}
}
return 0;
}