Moshenniki

hackerlab

Multi-stage HackerLab box: error-based SQLi through User-Agent leaks admin creds, LFI in image.php combined with double-extension JPEG upload gives RCE as www-data. Reverse a custom stream cipher with known-plaintext PNG header to recover SSH password, fix tampered PNG IHDR height and XOR-decode a base64 blob (with OCR-confused O↔0) for thomas's SSH password. Final root via backtick injection in a sudo-NOPASSWD checkTime.sh script.