webPromedium

Easy Upload

hackerlab

Task: Web "Easy Upload" — simple file upload. Solution: Basic file upload bypass, extension filtering circumvention.

$ ls tags/ techniques/
rcelfiphpfile_uploadlocal_file_inclusionremote_code_executiongif_polyglotmime_type_bypassblind_rceincludeob_startoutput_bufferingimage_upload
GIF polyglot creation (valid GIF header + PHP code)MIME type bypass via Content-Type header spoofingLFI via PHP include() functionBlind RCE with file-based output exfiltration
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