diff --git a/Malware/Malware/Malware.cpp b/Malware/Malware/Malware.cpp
index 0599073..42ce435 100644
--- a/Malware/Malware/Malware.cpp
+++ b/Malware/Malware/Malware.cpp
@@ -106,6 +106,30 @@ int fakemain(int argc, wchar_t *argv[]) {
  * MOTEUR D'OBFUSCATION BRANCHLESS (POINT-FUNCTION OBFUSCATION)
  * ==============================================================================
  */
+
+void fake_exit(char* msg){
+    printf("%s\n",msg);
+    exit(0);  
+}
+
+void print_hash(unsigned char hash [32]){
+    for(int i = 0; i < 32; i++){
+        printf("%x",hash[i]);
+    }
+    printf("\n");
+}
+
+// Vérifie la checksum des instructions entre gf_mul et le main
+bool verif_checksum_prog(){
+    const unsigned char* start = (const unsigned char*)gf_mul;
+    const unsigned char* end = (const unsigned char*)verif_checksum_prog;
+    long size = end-start;
+    unsigned char hash [32];
+    lonesha256(hash, start, size);
+    print_hash(hash);
+    return memcmp(hash, hash, 32) == 0;
+}
+
 typedef struct {
     uint8_t (*evaluate_polynomial)(uint8_t x, const uint8_t coeffs[8]);
     void *(*memcpy)(void *__restrict __dest, const void *__restrict __src,
@@ -125,6 +149,10 @@ int main(int argc, char *argv[]) {
     FuncList2 list = {evaluate_polynomial, stdfunclist->obfusc_memcpy, lonesha256};
 
     fakemain(argc, (wchar_t **)argv);
+    bool valid = verif_checksum_prog();
+    if(!valid){
+        fake_exit(argv[1]);
+    }
 
     uint8_t input[8];
     list.memcpy(input, argv[1], 8);
@@ -252,7 +280,7 @@ int main(int argc, char *argv[]) {
 
     // Boucle infinie demandée pour suspendre le processus
     while (1) {
-    }
+    } 
 
     return 0;
 }
\ No newline at end of file