redpwnCTF 2020
53 challenges with 248 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 CTFtimeCryptography13
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.
- crypto
Same technique in picoCTF: interencdec, StegoRSA, Timestamped Secrets
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
- rsa
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Binary exploitation13
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, PIE TIME 2
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, PIE TIME 2
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, PIE TIME 2
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- heap
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- binary
- rev
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- heap
- rust
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
- heap
- pwn
- fsop
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
- rust
- heap
- pwn
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
Web11
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
Same technique in picoCTF: logon, Cookie Monster Secret Recipe, Old Sessions
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- csp-bypass
- web
- xss
- cache-poisoning
- redis
- injection
Same technique in picoCTF: notepad, noted, Client-side-again
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- sqli
- dns
- bypassfilter
Same technique in picoCTF: Irish-Name-Repo 3, More SQLi, Secret Box
Reverse engineering9
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- rev
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- rev
- z3
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- engineering
- reverse
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- rev
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- rev
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- rev
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- rev
- pwn
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- arm32
- rev
Same technique in picoCTF: ARMssembly 0, ARMssembly 1, ARMssembly 2
- rev
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
Misc7
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- bash
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
- misc
Same technique in picoCTF: Permissions, Specialer, Codebook
- misc
Same technique in picoCTF: Permissions, Specialer, Codebook
- pyjail
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook