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Echo Valley
Published: April 2, 2025Updated: December 9, 2025
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- Binary CalculatorPerform binary arithmetic (add, subtract, multiply, divide) with copyable outputs in every base.
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More Binary Exploitation
- Binary ExploitationEasy
PIE TIME
PIE TIME (rescued-float): a PIE-protected binary leaks main's address on connect. Compute the base, find win()'s offset with objdump, and send the address to redirect execution.
- Binary ExploitationMedium
hash-only-1
A SUID binary resolves md5sum through PATH. Replace it with a cat script and run flaghasher to get the flag.
- Binary ExploitationMedium
hash-only-2
Escape a restricted shell, plant a fake md5sum earlier in PATH, and run flaghasher to dump the flag.