PicoCTF-2022 Writeup
  • README
  • Binary Exploitation
    • buffer overflow 1
    • buffer overflow 2
    • buffer overflow 3
    • flag leak
    • function overwrite
    • ropfu
    • stack cache
    • x-sixty-what
  • Cryptography
    • basic-mod1
    • basic-mod2
    • diffie-hellman
    • morse-code
    • NSA Backdoor
    • Sequences
    • substitution
    • Sum-O-Primes
    • Very Smooth
  • Forensics
    • Operation Oni
    • Operation Orchid
    • SideChannel
    • St3g0
    • Torrent Analyze
  • Reverse Engineering
    • Bbbbloat
    • Keygenme
    • unpackme
    • Wizardlike
  • Web Exploitation
    • Forbidden Paths
    • noted
    • Roboto Sans
    • SQLiLite
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  1. Binary Exploitation

buffer overflow 3

Previousbuffer overflow 2Nextflag leak

Last updated 3 years ago

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Challenge

Do you think you can bypass the protection and get the flag? It looks like Dr. Oswal added a stack canary to this to protect against buffer overflows. You can view source . And connect with it using: nc saturn.picoctf.net 57032

Solution

This challenge is almost identical to from PicoCTF 2019. Here is another writeup for and here is a writeup for the .

Solution provided in

Flag

picoCTF{Stat1C_c4n4r13s_4R3_b4D_f9792127}

program
here
CanaRy
CanaRy
nearly identical challenge from PicoCTF 2018
script.py