ELF x86 - Format string bug basic 1

15 Points  0x0

... or how to read through the stack

Author

Lu33Y,  

Level  Difficulty

Validations

6153 Challengers 4%

Note  Notation

1
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3
4
5
334 Votes

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 5 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
SymR   ELF x86 - Format string bug basic 1 27 January 2020 at 06:23
John Doe   ELF x86 - Format string bug basic 1 26 January 2020 at 19:09
MikeFromLyon69   ELF x86 - Format string bug basic 1 25 January 2020 at 20:48
gnoyaz   ELF x86 - Format string bug basic 1 22 January 2020 at 19:24
taygergix   ELF x86 - Format string bug basic 1 22 January 2020 at 14:32
kaynoto   ELF x86 - Format string bug basic 1 22 January 2020 at 02:35
jhache   ELF x86 - Format string bug basic 1 21 January 2020 at 15:00
Hammos   ELF x86 - Format string bug basic 1 20 January 2020 at 12:45
mbark_B   ELF x86 - Format string bug basic 1 20 January 2020 at 03:33
tofu   ELF x86 - Format string bug basic 1 19 January 2020 at 16:20

 73 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% 12911 5 Lyes 11
pas_valide ELF x86 - Stack buffer overflow basic 2 6% 9388 10 Lyes 10
pas_valide PE32 - Stack buffer overflow basic 1% 186 10 Ech0 2
pas_valide ELF x86 - Format string bug basic 1 4% 6153 15 Lu33Y 5
pas_valide ELF x64 - Stack buffer overflow - basic 3% 4614 20 Arod 6
pas_valide ELF x86 - Format string bug basic 2 2% 3044 20 Lyes 5
pas_valide ELF x86 - Race condition 3% 4212 20 Lu33Y 9
pas_valide ELF ARM - Stack buffer overflow - basic 1% 789 25 pickle 7
pas_valide ELF MIPS - Stack buffer overflow - No NX 1% 230 25 franb 2
pas_valide ELF x86 - Stack buffer overflow basic 3 2% 3015 25 Lyes 2
pas_valide ELF x86 - Use After Free - basic 1% 562 25 Esad 3
pas_valide PE32 - Advanced stack buffer overflow 1% 19 25 Ech0 1
pas_valide PE32+ Egg Hunter 1% 1 25 Ech0 0
pas_valide ELF ARM - Stack Spraying 1% 144 30 pickle 4
pas_valide ELF x86 - BSS buffer overflow 2% 3086 30 Lu33Y 7
pas_valide ELF x86 - Stack buffer overflow basic 4 2% 2052 30 Lu33Y 5
pas_valide ELF x86 - Stack buffer overflow basic 6 2% 1763 30 TiWim 5
pas_valide ELF x86 - Format String Bug Basic 3 1% 809 35 Lyes 2
pas_valide ELF ARM - Basic ROP 1% 398 40 pickle 5
pas_valide ELF MIPS - Basic ROP 1% 70 40 dagger 1
pas_valide ELF x86 - Stack buffer overflow - C++ vtables 1% 579 40 sebbb 2
pas_valide ELF x64 - Logic bug 1% 125 50 sbrk 3
pas_valide ELF x86 - Bug Hunting - Several issues 1% 65 50 sbrk 1
pas_valide ELF x86 - Stack buffer and integer overflow 1% 1500 50 Lu33Y 3
pas_valide ELF x86 - Stack buffer overflow - ret2dl_resolve 1% 102 50 kikko 0
pas_valide ELF x86 - Stack buffer overflow basic 5 1% 1370 50 Lu33Y 1
pas_valide ELF x64 - Stack buffer overflow - advanced 1% 832 55 Arod 4
pas_valide ELF MIPS - Format String Glitch 1% 30 60 pickle, martin 1
pas_valide ELF x86 - Information leakage with Stack Smashing Protector 1% 611 60 Arod 2
pas_valide ELF ARM - Race condition 1% 85 70 pickle 1
pas_valide ELF x64 - Browser exploit - Intro 1% 46 70 pickle 1
pas_valide ELF x86 - Out of bounds attack - French Paradox 1% 72 70 sbrk 3
pas_valide ELF x86 - Remote BSS buffer overflow 1% 644 75 Tosh 1
pas_valide ELF x86 - Remote Format String bug 1% 792 75 Tosh 2
pas_valide PE32+ Basic ROP 1% 1 75 Ech0 0
pas_valide ELF x64 - Remote heap buffer overflow - fastbin 1% 184 80 franb 1
pas_valide ELF x86 - Blind remote format string bug 1% 218 80 Lyes 1
pas_valide LinKern ARM - vulnerable syscall 1% 80 85 pickle 0
pas_valide LinKern x86 - Buffer overflow basic 1 1% 307 85 franb 2
pas_valide LinKern x86 - Null pointer dereference 1% 319 90 franb 0
pas_valide LinKern x64 - Race condition 1% 194 95 franb 0
pas_valide ELF ARM - Alphanumeric shellcode 1% 25 100 pickle 2
pas_valide ELF MIPS - URLEncoded Format String bug 1% 16 100 pickle 0
pas_valide ELF x86 - Hardened binary 1 1% 540 100 sm0k 3
pas_valide ELF x86 - Hardened binary 2 1% 429 100 sm0k 3
pas_valide ELF x86 - Hardened binary 3 1% 271 100 sm0k 1
pas_valide ELF x86 - Hardened binary 4 1% 305 100 sm0k 2
pas_valide LinKern MIPSel - Vulnerable ioctl 1% 26 100 pickle 0
pas_valide LinKern x64 - reentrant code 1% 103 100 franb 1
pas_valide ELF ARM - Heap format string bug 1% 49 105 franb 0
pas_valide ELF x64 - Sigreturn Oriented Programming 1% 176 105 Arod 3
pas_valide ELF ARM - Format String bug 1% 58 110 pickle 0
pas_valide ELF ARM - Use After Free 1% 56 110 pickle 0
pas_valide ELF x64 - Heap feng-shui 1% 42 110 laxa 2
pas_valide ELF x64 - Off-by-one bug 1% 91 110 NeedToLearn 2
pas_valide ELF x86 - Hardened binary 5 1% 227 110 sm0k 1
pas_valide LinKern ARM - Stack Overflow 1% 33 110 pickle 0
pas_valide LinKern x86 - basic ROP 1% 153 110 franb 1
pas_valide ELF ARM - Heap Off-by-One 1% 33 115 pickle 1
pas_valide ELF x64 - Remote Heap buffer overflow 1 1% 107 115 Tosh 3
pas_valide ELF x86 - Hardened binary 6 1% 211 115 sm0k 3
pas_valide ELF x86 - Hardened binary 7 1% 175 115 Tosh 3
pas_valide ELF x86 - Remote stack buffer overflow - Hardened 1% 102 115 franb 1
pas_valide LinKern x64 - RowHammer 1% 29 115 pickle 0
pas_valide LinKern x64 - SLUB off-by-one 1% 20 115 Tosh 1
pas_valide ELF ARM - Heap buffer overflow - Wilderness 1% 22 120 pickle 1
pas_valide ELF ARM - Heap Overflow 1% 24 120 pickle 0
pas_valide ELF x64 - Seccomp Whitelist 1% 36 120 pickle 0
pas_valide ELF x86 - Blind ROP 1% 76 120 franb 0
pas_valide Linkern x64 - Memory exploration 1% 68 120 franb 1
pas_valide ELF x64 - Remote Heap buffer overflow 2 1% 79 130 Tosh, Fritz 1
pas_valide ELF x64 - Blind ROP 1% 47 135 franb 1
pas_valide ELF x64 - Browser exploit - BitString 1% 16 135 pickle 0