ELF x86 - Format string bug basic 1

15 Points  0x0

... or how to read through the stack

Author

Lu33Y,  

Level  Difficulty

Validations

6411 Challengers 4%

Note  Notation

1
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3
4
5
342 Votes

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 5 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
N0-3   ELF x86 - Format string bug basic 1 5 April 2020 at 00:06
vinseg   ELF x86 - Format string bug basic 1 4 April 2020 at 23:42
tonynja   ELF x86 - Format string bug basic 1 4 April 2020 at 17:30
igor14pia   ELF x86 - Format string bug basic 1 4 April 2020 at 09:21
Revolt   ELF x86 - Format string bug basic 1 3 April 2020 at 13:59
Huntears   ELF x86 - Format string bug basic 1 3 April 2020 at 12:20
pistach3   ELF x86 - Format string bug basic 1 3 April 2020 at 11:45
Mvnick   ELF x86 - Format string bug basic 1 3 April 2020 at 11:31
khoi   ELF x86 - Format string bug basic 1 3 April 2020 at 10:27
Paralyz   ELF x86 - Format string bug basic 1 3 April 2020 at 07:02

 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% 13558 5 Lyes 11
pas_valide ELF x86 - Stack buffer overflow basic 2 6% 9796 10 Lyes 10
pas_valide PE32 - Stack buffer overflow basic 1% 340 10 Ech0 4
pas_valide ELF x86 - Format string bug basic 1 4% 6411 15 Lu33Y 5
pas_valide ELF x64 - Stack buffer overflow - basic 3% 4827 20 Arod 6
pas_valide ELF x86 - Format string bug basic 2 2% 3175 20 Lyes 5
pas_valide ELF x86 - Race condition 3% 4380 20 Lu33Y 9
pas_valide ELF ARM - Stack buffer overflow - basic 1% 846 25 pickle 7
pas_valide ELF MIPS - Stack buffer overflow - No NX 1% 252 25 franb 2
pas_valide ELF x86 - Stack buffer overflow basic 3 2% 3181 25 Lyes 2
pas_valide ELF x86 - Use After Free - basic 1% 689 25 Esad 3
pas_valide PE32 - Advanced stack buffer overflow 1% 62 25 Ech0 2
pas_valide PE32+ Egg Hunter 1% 25 25 Ech0 1
pas_valide ELF ARM - Stack Spraying 1% 149 30 pickle 4
pas_valide ELF x86 - BSS buffer overflow 2% 3169 30 Lu33Y 7
pas_valide ELF x86 - Stack buffer overflow basic 4 2% 2107 30 Lu33Y 5
pas_valide ELF x86 - Stack buffer overflow basic 6 2% 1867 30 TiWim 5
pas_valide ELF x86 - Format String Bug Basic 3 1% 842 35 Lyes 2
pas_valide ELF ARM - Basic ROP 1% 422 40 pickle 5
pas_valide ELF MIPS - Basic ROP 1% 75 40 dagger 1
pas_valide ELF x86 - Stack buffer overflow - C++ vtables 1% 594 40 sebbb 2
pas_valide ELF x64 - Logic bug 1% 128 50 sbrk 3
pas_valide ELF x86 - Bug Hunting - Several issues 1% 66 50 sbrk 1
pas_valide ELF x86 - Stack buffer and integer overflow 1% 1521 50 Lu33Y 3
pas_valide ELF x86 - Stack buffer overflow - ret2dl_resolve 1% 111 50 kikko 0
pas_valide ELF x86 - Stack buffer overflow basic 5 1% 1392 50 Lu33Y 1
pas_valide ELF x64 - Stack buffer overflow - advanced 1% 867 55 Arod 4
pas_valide ELF MIPS - Format String Glitch 1% 35 60 pickle, martin 1
pas_valide ELF x86 - Information leakage with Stack Smashing Protector 1% 630 60 Arod 2
pas_valide ELF ARM - Race condition 1% 91 70 pickle 1
pas_valide ELF x64 - Browser exploit - Intro 1% 49 70 pickle 1
pas_valide ELF x86 - Out of bounds attack - French Paradox 1% 75 70 sbrk 3
pas_valide ELF x86 - Remote BSS buffer overflow 1% 652 75 Tosh 1
pas_valide ELF x86 - Remote Format String bug 1% 803 75 Tosh 2
pas_valide PE32+ Basic ROP 1% 8 75 Ech0 0
pas_valide ELF x64 - Remote heap buffer overflow - fastbin 1% 197 80 franb 1
pas_valide ELF x86 - Blind remote format string bug 1% 222 80 Lyes 1
pas_valide LinKern ARM - vulnerable syscall 1% 85 85 pickle 0
pas_valide LinKern x86 - Buffer overflow basic 1 1% 321 85 franb 2
pas_valide LinKern x86 - Null pointer dereference 1% 329 90 franb 0
pas_valide LinKern x64 - Race condition 1% 201 95 franb 0
pas_valide ELF ARM - Alphanumeric shellcode 1% 26 100 pickle 2
pas_valide ELF MIPS - URLEncoded Format String bug 1% 16 100 pickle 0
pas_valide ELF x86 - Hardened binary 1 1% 559 100 sm0k 3
pas_valide ELF x86 - Hardened binary 2 1% 442 100 sm0k 3
pas_valide ELF x86 - Hardened binary 3 1% 279 100 sm0k 1
pas_valide ELF x86 - Hardened binary 4 1% 314 100 sm0k 2
pas_valide LinKern MIPSel - Vulnerable ioctl 1% 29 100 pickle 0
pas_valide LinKern x64 - reentrant code 1% 107 100 franb 1
pas_valide ELF ARM - Heap format string bug 1% 50 105 franb 0
pas_valide ELF x64 - Sigreturn Oriented Programming 1% 180 105 Arod 3
pas_valide ELF ARM - Format String bug 1% 60 110 pickle 0
pas_valide ELF ARM - Use After Free 1% 58 110 pickle 0
pas_valide ELF x64 - Heap feng-shui 1% 45 110 laxa 2
pas_valide ELF x64 - Off-by-one bug 1% 91 110 NeedToLearn 2
pas_valide ELF x86 - Hardened binary 5 1% 238 110 sm0k 1
pas_valide LinKern ARM - Stack Overflow 1% 35 110 pickle 0
pas_valide LinKern x86 - basic ROP 1% 159 110 franb 1
pas_valide ELF ARM - Heap Off-by-One 1% 35 115 pickle 1
pas_valide ELF x64 - Remote Heap buffer overflow 1 1% 116 115 Tosh 3
pas_valide ELF x86 - Hardened binary 6 1% 219 115 sm0k 3
pas_valide ELF x86 - Hardened binary 7 1% 186 115 Tosh 3
pas_valide ELF x86 - Remote stack buffer overflow - Hardened 1% 105 115 franb 1
pas_valide LinKern x64 - RowHammer 1% 36 115 pickle 1
pas_valide LinKern x64 - SLUB off-by-one 1% 23 115 Tosh 1
pas_valide ELF ARM - Heap buffer overflow - Wilderness 1% 23 120 pickle 1
pas_valide ELF ARM - Heap Overflow 1% 25 120 pickle 1
pas_valide ELF x64 - Seccomp Whitelist 1% 36 120 pickle 0
pas_valide ELF x86 - Blind ROP 1% 81 120 franb 0
pas_valide Linkern x64 - Memory exploration 1% 71 120 franb 1
pas_valide WinKern x64 - Advanced stack buffer overflow - ROP 1% 4 120 __syscall, Synacktiv 0
pas_valide WinKern x64 - Use After Free 1% 3 120 __syscall, Synacktiv 0
pas_valide ELF x64 - Remote Heap buffer overflow 2 1% 82 130 Tosh, Fritz 1
pas_valide ELF x64 - Blind ROP 1% 50 135 franb 1
pas_valide ELF x64 - Browser exploit - BitString 1% 17 135 pickle 0