LinKern x86 - Null pointer dereference

90 Points  0x0

Keep control

Author

franb,  

Level  Difficulty

Validations

435 Challengers 1%

Note  Notation

1
2
3
4
5
48 Votes

To reach this part of the site please login

solutions  Solution

Submit a solution

Challenge Results Challenge Results

Pseudo Challenge Lang Date
redoste App - Système  LinKern x86 - Null pointer dereference fr 19 May 2022 at 12:13
T0t0r0 App - System  LinKern x86 - Null pointer dereference en 12 May 2022 at 19:12
___ App - Système  LinKern x86 - Null pointer dereference fr 25 April 2022 at 14:03
Njörd App - Système  LinKern x86 - Null pointer dereference fr 22 April 2022 at 09:53
checkam App - Système  LinKern x86 - Null pointer dereference fr 8 April 2022 at 20:20
ghizmo App - Système  LinKern x86 - Null pointer dereference fr 8 April 2022 at 00:09
jashbin App - Système  LinKern x86 - Null pointer dereference fr 24 March 2022 at 20:46
Dvorhack App - Système  LinKern x86 - Null pointer dereference fr 24 March 2022 at 20:38
Socyopath App - Système  LinKern x86 - Null pointer dereference fr 28 February 2022 at 20:28
SamiK App - Système  LinKern x86 - Null pointer dereference fr 21 February 2022 at 16:03

challenges 83 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide ELF x86 - Stack buffer overflow basic 1 8% 18467 5 Lyes 11 25 March 2015
pas_valide ELF x86 - Stack buffer overflow basic 2 6% 13214 10 Lyes 10 10 April 2015
pas_valide PE32 - Stack buffer overflow basic 1% 1442 10 Ech0 8 3 December 2019
pas_valide ELF x86 - Format string bug basic 1 4% 8362 15 Lu33Y 6 8 February 2012
pas_valide ELF x64 - Stack buffer overflow - basic 3% 6424 20 Arod 7 31 May 2015
pas_valide ELF x86 - Format string bug basic 2 2% 4236 20 Lyes 5 8 April 2015
pas_valide ELF x86 - Race condition 3% 5504 20 Lu33Y 10 8 February 2012
pas_valide ELF ARM - Stack buffer overflow - basic 1% 1188 25 pickle 7 9 March 2017
pas_valide ELF MIPS - Stack buffer overflow - No NX 1% 427 25 franb 2 28 September 2018
pas_valide ELF x64 - Double free 1% 424 25 Esad 1 23 March 2021
pas_valide ELF x86 - Stack buffer overflow basic 3 2% 4226 25 Lyes 4 10 April 2015
pas_valide ELF x86 - Use After Free - basic 1% 1345 25 Esad 3 26 May 2019
pas_valide ELF ARM - Stack Spraying 1% 219 30 pickle 4 2 April 2017
pas_valide ELF x64 - Stack buffer overflow - PIE 1% 514 30 HomardBoy 2 26 March 2021
pas_valide ELF x86 - BSS buffer overflow 2% 3754 30 Lu33Y 7 8 February 2012
pas_valide ELF x86 - Stack buffer overflow basic 4 1% 2552 30 Lu33Y 5 8 February 2012
pas_valide ELF x86 - Stack buffer overflow basic 6 1% 2511 30 TiWim 5 10 March 2016
pas_valide ELF x86 - Format String Bug Basic 3 1% 1109 35 Lyes 2 27 May 2015
pas_valide PE32 - Advanced stack buffer overflow 1% 183 35 Ech0 4 3 December 2019
pas_valide ELF ARM - Basic ROP 1% 636 40 pickle 5 11 March 2017
pas_valide ELF MIPS - Basic ROP 1% 127 40 dagger 1 7 October 2018
pas_valide ELF x86 - Stack buffer overflow - C++ vtables 1% 781 40 sebbb 2 20 July 2015
pas_valide PE32+ Format string bug 1% 81 45 Ech0 1 3 December 2019
pas_valide ELF x64 - Logic bug 1% 175 50 sbrk 3 8 July 2017
pas_valide ELF x86 - Bug Hunting - Several issues 1% 95 50 sbrk 2 19 January 2018
pas_valide ELF x86 - Stack buffer and integer overflow 1% 1761 50 Lu33Y 4 8 February 2012
pas_valide ELF x86 - Stack buffer overflow - ret2dl_resolve 1% 248 50 kikko 2 28 February 2019
pas_valide ELF x86 - Stack buffer overflow basic 5 1% 1638 50 Lu33Y 1 8 February 2012
pas_valide ELF x64 - Stack buffer overflow - advanced 1% 1163 55 Arod 4 5 June 2015
pas_valide ELF MIPS - Format String Glitch 1% 55 60 pickle 1 21 October 2018
pas_valide ELF x64 - Heap Filling 1% 33 60 voydstack 0 27 May 2021
pas_valide ELF x86 - Information leakage with Stack Smashing Protector 1% 791 60 Arod 2 20 May 2015
pas_valide ELF x64 - File Structure Hacking 1% 39 65 nobodyisnobody 0 27 May 2021
pas_valide ELF ARM - Race condition 1% 125 70 pickle 1 3 June 2017
pas_valide ELF x64 - Browser exploit - Intro 1% 69 70 pickle 1 2 November 2018
pas_valide ELF x64 - Heap Safe-Linking Bypass 1% 23 70 nobodyisnobody 0 22 October 2021
pas_valide ELF x64 - ret2dl_init 1% 24 70 kikko 0 27 May 2021
pas_valide ELF x86 - Out of bounds attack - French Paradox 1% 100 70 sbrk 3 17 September 2017
pas_valide ELF x86 - Remote BSS buffer overflow 1% 724 75 Tosh 1 6 February 2012
pas_valide ELF x86 - Remote Format String bug 1% 906 75 Tosh 2 6 February 2012
pas_valide PE32+ Basic ROP 1% 45 75 Ech0 0 6 December 2019
pas_valide ELF x64 - Remote heap buffer overflow - fastbin 1% 255 80 franb 1 5 February 2017
pas_valide ELF x86 - Blind remote format string bug 1% 286 80 Lyes 2 8 June 2015
pas_valide LinKern ARM - vulnerable syscall 1% 136 85 pickle 0 22 March 2017
pas_valide LinKern x86 - Buffer overflow basic 1 1% 448 85 franb 3 16 February 2016
pas_valide LinKern x86 - Null pointer dereference 1% 435 90 franb 0 16 February 2016
pas_valide LinKern x64 - Race condition 1% 288 95 franb 3 16 February 2016
pas_valide ELF ARM - Alphanumeric shellcode 1% 40 100 pickle 2 16 March 2017
pas_valide ELF MIPS - URLEncoded Format String bug 1% 25 100 pickle 0 7 October 2018
pas_valide ELF x86 - Hardened binary 1 1% 684 100 sm0k 3 11 February 2012
pas_valide ELF x86 - Hardened binary 2 1% 540 100 sm0k 3 11 February 2012
pas_valide ELF x86 - Hardened binary 3 1% 329 100 sm0k 1 11 February 2012
pas_valide ELF x86 - Hardened binary 4 1% 374 100 sm0k 2 11 February 2012
pas_valide LinKern MIPSel - Vulnerable ioctl 1% 52 100 pickle 0 23 October 2018
pas_valide LinKern x64 - reentrant code 1% 157 100 franb 2 1 March 2016
pas_valide ELF ARM - Heap format string bug 1% 72 105 franb 1 3 June 2017
pas_valide ELF x64 - Sigreturn Oriented Programming 1% 235 105 Arod 4 25 June 2015
pas_valide ELF ARM - Format String bug 1% 80 110 pickle 2 14 March 2017
pas_valide ELF ARM - Use After Free 1% 86 110 pickle 0 22 March 2017
pas_valide ELF x64 - FILE structure hijacking 1% 27 110 voydstack 3 27 May 2021
pas_valide ELF x64 - Heap feng-shui 1% 65 110 laxa 2 4 August 2017
pas_valide ELF x64 - Off-by-one bug 1% 128 110 NeedToLearn 2 19 May 2016
pas_valide ELF x86 - Hardened binary 5 1% 289 110 sm0k 1 11 February 2012
pas_valide LinKern ARM - Stack Overflow 1% 55 110 pickle 0 24 July 2017
pas_valide LinKern x86 - basic ROP 1% 235 110 franb 3 6 May 2016
pas_valide ELF ARM - Heap Off-by-One 1% 52 115 pickle 1 11 March 2017
pas_valide ELF x64 - Remote Heap buffer overflow 1 1% 153 115 Tosh 3 26 June 2015
pas_valide ELF x86 - Hardened binary 6 1% 272 115 sm0k 3 11 February 2012
pas_valide ELF x86 - Hardened binary 7 1% 224 115 Tosh 3 21 January 2013
pas_valide ELF x86 - Remote stack buffer overflow - Hardened 1% 150 115 franb 1 17 August 2016
pas_valide LinKern x64 - RowHammer 1% 70 115 pickle 1 17 March 2019
pas_valide LinKern x64 - SLUB off-by-one 1% 55 115 Tosh 2 9 May 2019
pas_valide ELF ARM - Heap buffer overflow - Wilderness 1% 33 120 pickle 1 25 March 2017
pas_valide ELF ARM - Heap Overflow 1% 39 120 pickle 1 2 April 2017
pas_valide ELF x64 - Seccomp Whitelist 1% 57 120 pickle 0 3 June 2017
pas_valide ELF x86 - Blind ROP 1% 119 120 franb 0 9 October 2016
pas_valide LinKern x64 - Memory exploration 1% 105 120 franb 1 27 July 2016
pas_valide WinKern x64 - Advanced stack buffer overflow - ROP 1% 26 120 __syscall 1 27 January 2020
pas_valide WinKern x64 - Use After Free 1% 18 120 __syscall 0 27 January 2020
pas_valide ELF x64 - Remote Heap buffer overflow 2 1% 117 130 Tosh 1 1 July 2015
pas_valide ELF x64 - Advanced Heap Exploitation - Heap Leakless & Fortified 1% 16 135 nobodyisnobody 1 27 May 2021
pas_valide ELF x64 - Blind ROP 1% 89 135 franb 1 10 March 2018
pas_valide ELF x64 - Browser exploit - BitString 1% 30 135 pickle 0 15 December 2018