WinKern x64 - Use After Free

120 Points  0x0

Reverse the driver, find exposed vulnerabilities and exploit them on a Windows 10 system, in order to obtain SYSTEM privileges

Author

__syscall, Synacktiv,  

Level  Difficulty

Validations

10 Challengers 1%

Note  Notation

1
2
3
4
5
18 Votes

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  Solution

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Alkanor   WinKern x64 - Use After Free 19 January 2021 at 20:49
shelli   WinKern x64 - Use After Free 29 October 2020 at 21:35
gwel   WinKern x64 - Use After Free 16 October 2020 at 22:55
hexabeast   WinKern x64 - Use After Free 9 October 2020 at 02:48
awe   WinKern x64 - Use After Free 10 September 2020 at 19:49
hyliad   WinKern x64 - Use After Free 11 May 2020 at 09:55
kikko   WinKern x64 - Use After Free 21 April 2020 at 17:54
Tomtombinary   WinKern x64 - Use After Free 3 April 2020 at 18:20
BenK   WinKern x64 - Use After Free 28 March 2020 at 19:19
macz   WinKern x64 - Use After Free 5 February 2020 at 14:01

 75 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide ELF x86 - Stack buffer overflow basic 1 8% 15717 5 Lyes 11
pas_valide ELF x86 - Stack buffer overflow basic 2 6% 11242 10 Lyes 10
pas_valide PE32 - Stack buffer overflow basic 1% 788 10 Ech0 7
pas_valide ELF x86 - Format string bug basic 1 4% 7291 15 Lu33Y 6
pas_valide ELF x64 - Stack buffer overflow - basic 3% 5560 20 Arod 6
pas_valide ELF x86 - Format string bug basic 2 2% 3655 20 Lyes 5
pas_valide ELF x86 - Race condition 3% 4948 20 Lu33Y 9
pas_valide ELF ARM - Stack buffer overflow - basic 1% 1043 25 pickle 7
pas_valide ELF MIPS - Stack buffer overflow - No NX 1% 331 25 franb 2
pas_valide ELF x86 - Stack buffer overflow basic 3 2% 3652 25 Lyes 3
pas_valide ELF x86 - Use After Free - basic 1% 1051 25 Esad 3
pas_valide ELF ARM - Stack Spraying 1% 184 30 pickle 4
pas_valide ELF x86 - BSS buffer overflow 2% 3471 30 Lu33Y 7
pas_valide ELF x86 - Stack buffer overflow basic 4 2% 2285 30 Lu33Y 5
pas_valide ELF x86 - Stack buffer overflow basic 6 2% 2133 30 TiWim 5
pas_valide ELF x86 - Format String Bug Basic 3 1% 962 35 Lyes 2
pas_valide PE32 - Advanced stack buffer overflow 1% 129 35 Ech0 4
pas_valide ELF ARM - Basic ROP 1% 532 40 pickle 5
pas_valide ELF MIPS - Basic ROP 1% 99 40 dagger 1
pas_valide ELF x86 - Stack buffer overflow - C++ vtables 1% 677 40 sebbb 2
pas_valide PE32+ Format string bug 1% 59 45 Ech0 1
pas_valide ELF x64 - Logic bug 1% 150 50 sbrk 3
pas_valide ELF x86 - Bug Hunting - Several issues 1% 80 50 sbrk 2
pas_valide ELF x86 - Stack buffer and integer overflow 1% 1643 50 Lu33Y 3
pas_valide ELF x86 - Stack buffer overflow - ret2dl_resolve 1% 167 50 kikko 0
pas_valide ELF x86 - Stack buffer overflow basic 5 1% 1499 50 Lu33Y 1
pas_valide ELF x64 - Stack buffer overflow - advanced 1% 997 55 Arod 4
pas_valide ELF MIPS - Format String Glitch 1% 44 60 pickle, martin 1
pas_valide ELF x86 - Information leakage with Stack Smashing Protector 1% 715 60 Arod 2
pas_valide ELF ARM - Race condition 1% 108 70 pickle 1
pas_valide ELF x64 - Browser exploit - Intro 1% 64 70 pickle 1
pas_valide ELF x86 - Out of bounds attack - French Paradox 1% 91 70 sbrk 3
pas_valide ELF x86 - Remote BSS buffer overflow 1% 687 75 Tosh 1
pas_valide ELF x86 - Remote Format String bug 1% 847 75 Tosh 2
pas_valide PE32+ Basic ROP 1% 33 75 Ech0 0
pas_valide ELF x64 - Remote heap buffer overflow - fastbin 1% 229 80 franb 1
pas_valide ELF x86 - Blind remote format string bug 1% 257 80 Lyes 2
pas_valide LinKern ARM - vulnerable syscall 1% 111 85 pickle 0
pas_valide LinKern x86 - Buffer overflow basic 1 1% 374 85 franb 3
pas_valide LinKern x86 - Null pointer dereference 1% 373 90 franb 0
pas_valide LinKern x64 - Race condition 1% 233 95 franb 1
pas_valide ELF ARM - Alphanumeric shellcode 1% 35 100 pickle 2
pas_valide ELF MIPS - URLEncoded Format String bug 1% 21 100 pickle 0
pas_valide ELF x86 - Hardened binary 1 1% 614 100 sm0k 3
pas_valide ELF x86 - Hardened binary 2 1% 489 100 sm0k 3
pas_valide ELF x86 - Hardened binary 3 1% 301 100 sm0k 1
pas_valide ELF x86 - Hardened binary 4 1% 340 100 sm0k 2
pas_valide LinKern MIPSel - Vulnerable ioctl 1% 36 100 pickle 0
pas_valide LinKern x64 - reentrant code 1% 128 100 franb 2
pas_valide ELF ARM - Heap format string bug 1% 65 105 franb 1
pas_valide ELF x64 - Sigreturn Oriented Programming 1% 207 105 Arod 4
pas_valide ELF ARM - Format String bug 1% 76 110 pickle 2
pas_valide ELF ARM - Use After Free 1% 81 110 pickle 0
pas_valide ELF x64 - Heap feng-shui 1% 56 110 laxa 2
pas_valide ELF x64 - Off-by-one bug 1% 112 110 NeedToLearn 2
pas_valide ELF x86 - Hardened binary 5 1% 260 110 sm0k 1
pas_valide LinKern ARM - Stack Overflow 1% 47 110 pickle 0
pas_valide LinKern x86 - basic ROP 1% 191 110 franb 2
pas_valide ELF ARM - Heap Off-by-One 1% 49 115 pickle 1
pas_valide ELF x64 - Remote Heap buffer overflow 1 1% 138 115 Tosh 3
pas_valide ELF x86 - Hardened binary 6 1% 240 115 sm0k 3
pas_valide ELF x86 - Hardened binary 7 1% 203 115 Tosh 3
pas_valide ELF x86 - Remote stack buffer overflow - Hardened 1% 124 115 franb 1
pas_valide LinKern x64 - RowHammer 1% 53 115 pickle 1
pas_valide LinKern x64 - SLUB off-by-one 1% 36 115 Tosh 2
pas_valide ELF ARM - Heap buffer overflow - Wilderness 1% 30 120 pickle 1
pas_valide ELF ARM - Heap Overflow 1% 38 120 pickle 1
pas_valide ELF x64 - Seccomp Whitelist 1% 46 120 pickle 0
pas_valide ELF x86 - Blind ROP 1% 102 120 franb 0
pas_valide Linkern x64 - Memory exploration 1% 84 120 franb 1
pas_valide WinKern x64 - Advanced stack buffer overflow - ROP 1% 18 120 __syscall, Synacktiv 1
pas_valide WinKern x64 - Use After Free 1% 10 120 __syscall, Synacktiv 0
pas_valide ELF x64 - Remote Heap buffer overflow 2 1% 104 130 Tosh, Fritz 1
pas_valide ELF x64 - Blind ROP 1% 72 135 franb 1
pas_valide ELF x64 - Browser exploit - BitString 1% 25 135 pickle 0