PicoGym

Reverse Engineering

Challenge	Category	Description
vault-door-*	picoCTF 2019	reversing java source codes
GDB baby step *	picoGym Exclusive	examining memory using gdb

Challenge	Category	Description
The Numbers	picoCTF 2019	mapping ascii to -1 index
Easy Peasy	picoCTF 2021	reused xor key
Mind Your Ps and Qs	picoCTF 2021	classic RSA with small Modulo

Challenge	Category	Description
seed sPRiNG	picoCTF 2019	random with current time seed
Guessing Game 2	picoCTF 2020	Bruteforcing guess and ret2libc
Guessing Game 1	picoCTF 2020	unseed random and rop to syscall
Unsubscriptions Are Free	picoCTF 2021	simple and friendly introduction to UAF
Cache Me Outside	picoCTF 2021	UAF tcache poisoning
Here's a LIBC	picoCTF 2021	ret2libc
Stonks	picoCTF 2021	format string leak
wine	picoCTF 2022	windows ret2win
buffer overflow 0	picoCTF 2022	basic buffer overflow
buffer overflow 2	picoCTF 2022	ret2win with param
basic file exploit	picoCTF 2022	unhandled error
stack cache	picoCTF 2022	stack leak, uncleared stack
function overwrite	picoCTF 2022	negative index unchecked
flag leak	picoCTF 2022	stack format string leak
ropfu	picoCTF 2022	rop2syscall
x-sixty-what	picoCTF 2022	ret2win
two-sum	picoCTF 2023	integer overflow
VNE	picoCTF 2023	abusing unfiltered user input
hijacking	picoCTF 2023	sudo privesc on remote
Picker IV	picoGym Exclusive	jump to given address
Local Target	picoGym Exclusive	local variable overwrite
fermat strings	picoMini	format string overwrite GOT to main, leak libc, GOT to system
clutter-overflow	picoMini	stack variable overwrite