# antistatic
**Category**: Reversing \**Tags**: `crackme`, `babyrev` \**Points**: 100 (51 solves) \**Author**: Retr0id
## Challenge
Heisenberg's uncertainty principle also applies to CTF. Please do not observe my crackme, otherwise you may change its behavior!
Author: Retr0id \Attachments: `antistatic`
## Solution
Open in Ghidra and decompile. `main` does basically nothing but`__libc_gnu_init` looks interesting. A lot of weird antidebugging stuff goingon that I just NOP'd out.
After cleaning up the decompiled C it's a lot easier to see what's going on:
```pythonimport pwn
elf = pwn.ELF("antistatic")gnu_hash = elf.read(elf.sym["gnu_hash"], 50)
for j in range(0x13):    for c in range(256):        if (c ^ 0x42 + j) & 0xff == gnu_hash[j]:            print(chr(c), end="")
print()# union{ct0rs_b3war3}```