Difference between revisions of "CTF-practice-evening:2014-07-07"
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* Dimitris is discussing the challenges solved by Team Knuffelhackers in the Pwnium CTF last weekend | * Dimitris is discussing the challenges solved by Team Knuffelhackers in the Pwnium CTF last weekend | ||
| − | * Kernel land: | + | * Kernel land (150 points): |
** Static binary - Dimitris loaded it into QEMU | ** Static binary - Dimitris loaded it into QEMU | ||
** When he runs it it produces ticks - the hint: the flag is on the 3rd ticket | ** When he runs it it produces ticks - the hint: the flag is on the 3rd ticket | ||
Revision as of 18:19, 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 (150 points):
- 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:
