ELF x86 - Format string bug basic 1

15 Points  

... or how to read through the stack

Author

Lu33Y,  

Level  Difficulty

Validations

4416 Challengers 5%

Note  Notation

1
2
3
4
5
253 Votes
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Solution 4 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
D0C1P   ELF x86 - Format string bug basic 1 fr 19 September 2018 at 00:13
KoneKo   ELF x86 - Format string bug basic 1 fr 18 September 2018 at 11:42
MiscHunter   ELF x86 - Format string bug basic 1 en 18 September 2018 at 09:06
Noiche   ELF x86 - Format string bug basic 1 en 18 September 2018 at 02:28
Vertebro   ELF x86 - Format string bug basic 1 fr 17 September 2018 at 18:01
M3noetius   ELF x86 - Format string bug basic 1 en 17 September 2018 at 12:36
shaidar   ELF x86 - Format string bug basic 1 fr 17 September 2018 at 10:54
cubist   ELF x86 - Format string bug basic 1 en 17 September 2018 at 08:01
Hussein   ELF x86 - Format string bug basic 1 fr 16 September 2018 at 23:36
null   ELF x86 - Format string bug basic 1 fr 16 September 2018 at 19:00

Challenges associated with this section 58 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide ELF x86 - Stack buffer overflow basic 1 9% 8373 5 Lyes 11
pas_valide ELF x86 - Stack buffer overflow basic 2 7% 6438 10 Lyes 9
pas_valide ELF x86 - Format string bug basic 1 5% 4416 15 Lu33Y 4
pas_valide ELF x64 - Stack buffer overflow - basic 4% 3148 20 Arod 4
pas_valide ELF x86 - Format string bug basic 2 3% 2127 20 Lyes 5
pas_valide ELF x86 - Race condition 4% 3095 20 Lu33Y 8
pas_valide ELF ARM - Stack buffer overflow - basic 1% 380 25 pickle 7
pas_valide ELF x86 - Stack buffer overflow basic 3 3% 2129 25 Lyes 2
pas_valide ELF ARM - Stack Spraying 1% 88 30 pickle 3
pas_valide ELF x86 - BSS buffer overflow 3% 2539 30 Lu33Y 6
pas_valide ELF x86 - Stack buffer overflow basic 4 2% 1670 30 Lu33Y 4
pas_valide ELF x86 - Stack buffer overflow basic 6 2% 1172 30 TiWim 4
pas_valide ELF x86 - Format String Bug Basic 3 1% 578 35 Lyes 2
pas_valide ELF ARM - Basic ROP 1% 157 40 pickle 2
pas_valide ELF x86 - Stack buffer overflow - C++ vtables 1% 420 40 sebbb 2
pas_valide ELF x64 - Logic bug 1% 69 50 sbrk 2
pas_valide ELF x86 - Bug Hunting - Several issues 1% 32 50 sbrk 0
pas_valide ELF x86 - Stack buffer and integer overflow 2% 1283 50 Lu33Y 3
pas_valide ELF x86 - Stack buffer overflow basic 5 2% 1187 50 Lu33Y 1
pas_valide ELF x64 - Stack buffer overflow - advanced 1% 557 55 Arod 3
pas_valide ELF x86 - Information leakage with Stack Smashing Protector 1% 465 60 Arod 2
pas_valide ELF ARM - Race condition 1% 56 70 pickle 1
pas_valide ELF x86 - Out of bounds attack - French Paradox 1% 49 70 sbrk 1
pas_valide ELF x86 - Remote BSS buffer overflow 1% 578 75 Tosh 1
pas_valide ELF x86 - Remote Format String bug 1% 698 75 Tosh 2
pas_valide ELF x64 - Remote heap buffer overflow - fastbin 1% 117 80 franb 1
pas_valide ELF x86 - Blind remote format string bug 1% 172 80 Lyes 0
pas_valide LinKern ARM - vulnerable syscall 1% 49 85 pickle 0
pas_valide LinKern x86 - Buffer overflow basic 1 1% 213 85 franb 1
pas_valide LinKern x86 - Null pointer dereference 1% 217 90 franb 0
pas_valide LinKern x64 - Race condition 1% 148 95 franb 0
pas_valide ELF ARM - Alphanumeric shellcode 1% 19 100 pickle 2
pas_valide ELF x86 - Hardened binary 1 1% 427 100 sm0k 2
pas_valide ELF x86 - Hardened binary 2 1% 340 100 sm0k 2
pas_valide ELF x86 - Hardened binary 3 1% 218 100 sm0k 1
pas_valide ELF x86 - Hardened binary 4 1% 237 100 sm0k 2
pas_valide LinKern x64 - reentrant code 1% 82 100 franb 1
pas_valide ELF ARM - Heap format string bug 1% 34 105 franb 0
pas_valide ELF x64 - Sigreturn Oriented Programming 1% 145 105 Arod 2
pas_valide LinKern x86 - basic ROP 1% 114 110 franb 1
pas_valide ELF ARM - Format String bug 1% 38 110 pickle 0
pas_valide ELF ARM - Use After Free 1% 36 110 pickle 0
pas_valide ELF x64 - Heap feng-shui 1% 29 110 laxa 2
pas_valide ELF x64 - Off-by-one bug 1% 69 110 NeedToLearn 1
pas_valide ELF x86 - Hardened binary 5 1% 171 110 sm0k 1
pas_valide LinKern ARM - Stack Overflow 1% 17 110 pickle 0
pas_valide ELF ARM - Heap Off-by-One 1% 26 115 pickle 1
pas_valide ELF x64 - Remote Heap buffer overflow 1 1% 83 115 Tosh 2
pas_valide ELF x86 - Hardened binary 6 1% 165 115 sm0k 2
pas_valide ELF x86 - Hardened binary 7 1% 134 115 Tosh 2
pas_valide ELF x86 - Remote stack buffer overflow - Hardened 1% 62 115 franb 1
pas_valide ELF ARM - Heap buffer overflow - Wilderness 1% 17 120 pickle 0
pas_valide ELF ARM - Heap Overflow 1% 18 120 pickle 0
pas_valide ELF x64 - Seccomp Whitelist 1% 24 120 pickle 0
pas_valide ELF x86 - Blind ROP 1% 39 120 franb 0
pas_valide Linkern x64 - Memory exploration 1% 47 120 franb 1
pas_valide ELF x64 - Remote Heap buffer overflow 2 1% 62 130 Tosh, Fritz 1
pas_valide ELF x64 - Blind ROP 1% 20 135 franb 1