2023from public repositories
HEALTHKATHON CTF BPJS 2023
18 challenges with 18 published solutions between them. CTFtime has no listing for this event at all, so nothing built on CTFtime can show what it was made of. These writeups were found in public repositories instead. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised16
The upstream scoreboard did not say, so neither do we.
Advanced Shift
1 official solutionAdvanced Shift V2
1 official solutionAdvanced XOR
1 official solutionAdvanced XOR V2
1 official solutionChecksum X SHA 256
1 official solutionCookie Authentication Schema
1 official solutionExtract Unofficial Torrent
1 official solutionJavascript Format HEX
1 official solutionJavascript Shift Algorithm
1 official solutionJavascript XOR (V2) Algorithm
1 official solutionJavascript XOR Algorithm
1 official solutionPlay With Torrent Time
1 official solutionSHA 512 Checksum
1 official solutionSQL Injection Login
1 official solutionSQL Injection V2
1 official solutionWhat Is Cookie
1 official solution
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Solve it with:Brainfuck and esolang decoderCipher identifier and automatic decoderRegex tester with match offsets and capture groupsLearn: Recognising encodings
BUSD Token Swarm Source
1 official solution
Binary exploitation1
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Solve it with:ROP gadget finderShellcode assembler and libraryCyclic pattern generator and offset finderFormat string exploit builderLearn: Binary exploitation
Javascript Format Binary
1 official solution