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eTest test file decryptor
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| //Binary Win32 + source = https://www.dropbox.com/sh/4zp5okf5c1o6zyq/AAA1AJ-9t4vFuocoRCCGq_7Ia | |
| #include <stdio.h> | |
| #include <malloc.h> | |
| #include <string.h> | |
| char* TS1_KEY = "PoLiK"; | |
| char* TS2_KEY = "dfafFDSAFffdf342fd"; | |
| char* TS3_KEY = "jfkbFDSFDSdsf32cxc"; | |
| void decryptData(char* data, int size, char* key) | |
| { | |
| int i; | |
| int keylen; | |
| char mask; | |
| keylen = strlen(key); | |
| for(i = 0; i < size; i++) | |
| { | |
| mask = ((i % 0x400) % 0x28 + key[i % keylen]) % 0xFF; | |
| data[i] ^= mask; | |
| } | |
| } | |
| int main(int argc, char const **argv) | |
| { | |
| FILE* f1; | |
| FILE* f2; | |
| char magic[5]; | |
| char* key; | |
| int fileSize; | |
| char* buffer; | |
| if(argc < 3) | |
| { | |
| printf("Usage: %s infile outfile\n", argv[0]); | |
| return 0; | |
| } | |
| f1 = fopen(argv[1], "rb"); | |
| if(!f1) | |
| { | |
| printf("Can't find file %s\n", argv[1]); | |
| return 1; | |
| } | |
| f2 = fopen(argv[2], "wb"); | |
| if(!f2) | |
| { | |
| printf("Can't open file %s for writing!\n", argv[2]); | |
| fclose(f1); | |
| return 1; | |
| } | |
| fseek(f1, 0, SEEK_END); | |
| fileSize = ftell(f1); | |
| fseek(f1, 0, SEEK_SET); | |
| fread(magic, 1, 5, f1); | |
| if(!strncmp(magic, "[TS1]", 5)) | |
| { | |
| key = TS1_KEY; | |
| } | |
| else if(!strncmp(magic, "[TS2]", 5)) | |
| { | |
| key = TS2_KEY; | |
| } | |
| else if(!strncmp(magic, "[TS3]", 5)) | |
| { | |
| key = TS3_KEY; | |
| } | |
| else | |
| { | |
| fclose(f1); | |
| fclose(f2); | |
| printf("Can't find Magic!\n"); | |
| return 1; | |
| } | |
| buffer = (char*)malloc(fileSize); | |
| fread(buffer, 1, fileSize - 5, f1); | |
| fclose(f1); | |
| decryptData(buffer, fileSize - 5, key); | |
| fwrite(buffer, 1, fileSize - 5, f2); | |
| fclose(f2); | |
| free(buffer); | |
| printf("Decrypted successfully!\n"); | |
| return 0; | |
| } |
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