added all ctfs

ForeverCTF/simple_checker/guesses.txt

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+flag = utflag{simple}

ForeverCTF/tricky_indices/flag.txt

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+bullshit_flag

ForeverCTF/tricky_indices/writeup.md

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+# Tricky Indices
+
+To exploit this binary enter -112 as the first index and -12 as the second index.
+This dumps the flag because no bounds were checked and the flag is located below
+the flag in memory

ForeverCTF/uint64_t/.gdb_history

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+q

ForeverCTF/uint64_t/writeup.md

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+# uint64_t challange
+
+Observations:
+Current balance is stored as a uint64_t
+There is no check if you have enough money to buy a doge.
+
+Exploit Path:
+1. Buy dodges until u get uint64_MAX ammount of money.
+2. Buy the win
+3. get the flag with `cat /flag.txt`
+

ForeverCTF/xor/decrypt_binary.py

@@ -0,0 +1,9 @@
+import sys
+
+binary = bytearray(open(sys.argv[1], 'rb').read())
+size = len(binary)
+
+for i in range (size):
+    binary[i] = binary[i] ^ 0x41
+
+open(sys.argv[2], 'wb').write(binary)