pwnProeasy

Вопрос (Question)

hackerlab

Task: Binary checks for correct answer to get flag. Solution: Buffer overflow via gets() to overwrite adjacent secret variable with magic value 0x50574E21.

elf64 static_analysis buffer_overflow stack_overflow variable_overwrite magic_value objdump bss_segment little_endian

Magic value comparison bypassStatic binary analysis with objdumpBuffer overflow to overwrite adjacent global variableLittle-endian byte order exploitation

$ ls tags/ techniques/

elf64 static_analysis buffer_overflow stack_overflow variable_overwrite magic_value objdump bss_segment little_endian

Magic value comparison bypassStatic binary analysis with objdumpBuffer overflow to overwrite adjacent global variableLittle-endian byte order exploitation

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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