diff --git a/Reverse_Engineering/cicada3301.jpg b/Reverse_Engineering/cicada3301.jpg
deleted file mode 100644
index c37e6ad..0000000
Binary files a/Reverse_Engineering/cicada3301.jpg and /dev/null differ
diff --git a/Web_Exploits/php/xor.php b/Web_Exploits/php/xor.php
new file mode 100755
index 0000000..419d4b5
--- /dev/null
+++ b/Web_Exploits/php/xor.php
@@ -0,0 +1,31 @@
+<?php
+$cookie = base64_decode('ClVLIh4ASCsCBE8lAxMacFMZV2hdVVotEhhUJQNVAmhSEV4sFxFeaAw'); 
+
+function xor_encrypt($in){ 
+	$text = $in; 
+	$key = json_encode(array( "showpassword"=>"no", "bgcolor"=>"#ffffff"));
+	$outText = '';
+
+	for($i=0;$i<strlen($text);$i++) { 
+		$outText .= $text[$i] ^ $key[$i % strlen($key)]; 
+	} 
+	return $outText; 
+} 
+
+print xor_encrypt($cookie); 
+
+
+function xor_encrypt_mod(){ 
+	$text = json_encode(array( "showpassword"=>"yes", "bgcolor"=>"#ffffff"));
+	$key = 'qw8J';
+	$outText = '';
+
+	for($i=0;$i<strlen($text);$i++) { 
+		$outText .= $text[$i] ^ $key[$i % strlen($key)]; 
+	} 
+	return $outText; 
+} 
+
+print base64_encode(xor_encrypt_mod()); 
+?>
+