Difference between revisions of "CTF-practice-evening:2014-07-07"
| Line 23: | Line 23: | ||
** He added a debugger to the VM | ** He added a debugger to the VM | ||
** He put a breakpoint on timer tick - and there's also a variable called 'flag' | ** He put a breakpoint on timer tick - and there's also a variable called 'flag' | ||
| − | ** | + | ** He needed to add the symbols to GDB |
| + | ** He single stepped through the "ticks" , through the 3rd tick, and then examine the flag variable in memory at Tick 3 | ||
* USB is fun: | * USB is fun: | ||
** | ** | ||
Revision as of 18:17, 7 July 2014
| CTF-practice-evening:2014-07-07 | |
|---|---|
| Date | 2014/07/07 |
| Time | |
| Location | ACTA |
| Type | Workshop |
| Contact | Melanie |
Capture The Flag evening - Part 21
- 7 July, 2014 - 7 PM
- Please bring along a laptop with you!!!
General CTF Info
- See the page for the Ctf-evenings
- Link to the Tech Inc Challenge Website Scoreboard
Pwnium CTF Retrospective
- Dimitris is discussing the challenges solved by Team Knuffelhackers in the Pwnium CTF last weekend
- Kernel land:
- Static binary - Dimitris loaded it into QEMU
- When he runs it it produces ticks - the hint: the flag is on the 3rd ticket
- He added a debugger to the VM
- He put a breakpoint on timer tick - and there's also a variable called 'flag'
- He needed to add the symbols to GDB
- He single stepped through the "ticks" , through the 3rd tick, and then examine the flag variable in memory at Tick 3
- USB is fun:
