reverseeasy

Warmup (Task 49)

duckerz

Task: 64-bit ELF binary with encrypted flag. Solution: Identified ROL 5 bit rotation in transform_string function, extracted encrypted data from .rodata section, applied inverse ROR 5 operation to decrypt the flag.

$ ls tags/ techniques/

elf static-analysis 64-bit rotate-bits string-transformation

static_binary_analysisbitwise_rotationrodata_extractionreverse_engineering

Analysis

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

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