reverseProeasy

crackme3

rev-kids20.forkbomb.ru

Language: C. Source code of encoder provided + encoded flag file. Encoding uses XOR with random bytes.

c file_decode source_code xor_random paired_bytes

source_code_analysisxor_decode_with_key

$ ls tags/ techniques/

c file_decode source_code xor_random paired_bytes

source_code_analysisxor_decode_with_key

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

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

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Permission denied (requires tier.pro)

Sign in to access full writeups

Sign in with GitHub, Discord, or Google to continue. No email required.

$sign in

$ grep --similar

Similar writeups

[reverse][Pro]crackme1— rev-kids20.forkbomb.ru
[reverse][Pro]crackme2— rev-kids20.forkbomb.ru
[crypto][Pro]ROX — XOR with Key— spbctf
[crypto][Pro]Harder encryptor— spbctf
[reverse][Pro]Mic Check Five— rev-kids20.forkbomb.ru