BackdoorCTF 2017
21 challenges with 88 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.
Full task list on CTFtimeUncategorised8
The upstream scoreboard did not say, so neither do we.
32 Chal Exploit
1 official solutionAlso written up in: Xelentra1/CTF
32 New Exploit
1 official solutionAlso written up in: Xelentra1/CTF
Also written up in: mrchisel14/CTFs
BABY 0x41414141 PWN150
1 official solutionAlso written up in: AnisBoss/CTFs
BackdoorCTF2017 just dot id pwn250
1 official solutionAlso written up in: mfakbar127/CTF-Writeup
NO CALM REV350
1 official solutionAlso written up in: AnisBoss/CTFs
Also written up in: 2O2L2H/awesome-ctf-wargame
Win Baby
1 official solutionAlso written up in: ShellCollectingClub/backdoor2017
Binary exploitation4
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Also written up in: merrychap/ctf-writeups, VoidHack/write-ups, konatabrk/ctf-writeups, Hope0351/CTF-collection, k0nata/write-ups, ShellCollectingClub/backdoor2017, merrychap/ctf-writeups, VoidHack/write-ups
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Also written up in: merrychap/ctf-writeups, VoidHack/write-ups, konatabrk/ctf-writeups, Hope0351/CTF-collection, k0nata/write-ups, ShellCollectingClub/backdoor2017, merrychap/ctf-writeups, VoidHack/write-ups, jakob.space
- exploitation
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Also written up in: mrchisel14/CTFs
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Also written up in: bennofs/docs
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Web3
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Also written up in: birdsoup/CTF-Writeups, Inshallhack/Write-ups, SIben/Write-ups, xPowerz/CTF-Writeups
- web
Same technique in picoCTF: Live Art, secure-email-service, No FA
- web
- crypto
Same technique in picoCTF: Live Art, secure-email-service, No FA
Extends Me 250
1 official solutionAlso written up in: SPRITZ-Research-Group/ctf-writeups
Misc3
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
IMAGEREV
4 writeupsAlso written up in: VoidHack/write-ups, k0nata/write-ups, lcsdavid/ctf, lcsdavid/ctf
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Stereotype
1 writeupSame technique in picoCTF: PW Crack 2, Permissions, Specialer
Cryptography2
Recover a plaintext or a key from something that was supposed to protect it. In practice: identify the scheme, find the parameter the author got wrong, exploit it.
ECB
2 writeupsSame technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
- crypto
- rsa
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, john_pollard
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Also written up in: Brandon-Everhart/CTF-Writeups, ShellCollectingClub/backdoor2017, Brandon-Everhart/CTF-Writeups, Inshallhack/Write-ups, mrchisel14/CTFs, SIben/Write-ups
- rev
- angr
- z3
- reversing
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200