2017weight 17.500x00sec

0x00ctf-2017

6 challenges with 8 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 CTFtime

Binary exploitation3

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 finder Shellcode assembler and library Cyclic pattern generator and offset finder Format string exploit builder Learn: Binary exploitation

left
250 pts2 writeups
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
babyheap
200 pts1 writeup
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
memo
200 pts1 writeup
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3

Reverse engineering3

Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.

Solve it with:Strings extractor for binaries and blobs WebAssembly disassembler Java .class disassembler Python .pyc bytecode disassembler Learn: Binary exploitation

challenge-004
50 pts2 writeups
- reverse
- engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
challenge-000 (guessme)
50 pts1 writeup
- reverse
- engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
challenge-003
175 pts1 writeup
- reverse_engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300

Binary exploitation3

left

babyheap

memo

Reverse engineering3

challenge-004

challenge-000 (guessme)

challenge-003

Other 2017 events