ELF x86 - Format string bug basic 1

15 Points  

... or how to read through the stack

Author

Lu33Y,  

Level  Difficulty

Validations

5523 Challengers 4%

Note  Notation

1
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3
4
5
306 Votes
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Solution 5 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
SilvaC   ELF x86 - Format string bug basic 1 fr 18 July 2019 at 03:18
loicttn   ELF x86 - Format string bug basic 1 fr 17 July 2019 at 20:47
dr.36   ELF x86 - Format string bug basic 1 en 16 July 2019 at 23:41
kaftejiman   ELF x86 - Format string bug basic 1 en 16 July 2019 at 20:03
j0ns1k   ELF x86 - Format string bug basic 1 en 16 July 2019 at 12:23
Marshall   ELF x86 - Format string bug basic 1 fr 16 July 2019 at 10:44
x4nt0n   ELF x86 - Format string bug basic 1 en 15 July 2019 at 22:51
Guy   ELF x86 - Format string bug basic 1 en 15 July 2019 at 19:08
Mr. Robot   ELF x86 - Format string bug basic 1 fr 14 July 2019 at 16:12
eudipus   ELF x86 - Format string bug basic 1 fr 12 July 2019 at 19:55

Challenges associated with this section 69 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 8% 11154 5 Lyes 11
pas_valide ELF x86 - Stack buffer overflow basic 2 6% 8300 10 Lyes 10
pas_valide ELF x86 - Format string bug basic 1 4% 5523 15 Lu33Y 5
pas_valide ELF x64 - Stack buffer overflow - basic 3% 4023 20 Arod 5
pas_valide ELF x86 - Format string bug basic 2 2% 2704 20 Lyes 5
pas_valide ELF x86 - Race condition 3% 3717 20 Lu33Y 8
pas_valide ELF ARM - Stack buffer overflow - basic 1% 650 25 pickle 7
pas_valide ELF MIPS - Stack buffer overflow - No NX 1% 156 25 franb 2
pas_valide ELF x86 - Stack buffer overflow basic 3 2% 2676 25 Lyes 2
pas_valide ELF x86 - Use After Free - basic 1% 206 25 Esad 2
pas_valide ELF ARM - Stack Spraying 1% 129 30 pickle 4
pas_valide ELF x86 - BSS buffer overflow 3% 2917 30 Lu33Y 6
pas_valide ELF x86 - Stack buffer overflow basic 4 2% 1937 30 Lu33Y 5
pas_valide ELF x86 - Stack buffer overflow basic 6 2% 1559 30 TiWim 4
pas_valide ELF x86 - Format String Bug Basic 3 1% 739 35 Lyes 2
pas_valide ELF ARM - Basic ROP 1% 306 40 pickle 4
pas_valide ELF MIPS - Basic ROP 1% 52 40 dagger 1
pas_valide ELF x86 - Stack buffer overflow - C++ vtables 1% 521 40 sebbb 2
pas_valide ELF x64 - Logic bug 1% 105 50 sbrk 3
pas_valide ELF x86 - Bug Hunting - Several issues 1% 50 50 sbrk 0
pas_valide ELF x86 - Stack buffer and integer overflow 2% 1430 50 Lu33Y 3
pas_valide ELF x86 - Stack buffer overflow - ret2dl_resolve 1% 65 50 kikko 0
pas_valide ELF x86 - Stack buffer overflow basic 5 1% 1312 50 Lu33Y 1
pas_valide ELF x64 - Stack buffer overflow - advanced 1% 726 55 Arod 4
pas_valide ELF MIPS - Format String Glitch 1% 21 60 pickle, martin 0
pas_valide ELF x86 - Information leakage with Stack Smashing Protector 1% 549 60 Arod 2
pas_valide ELF ARM - Race condition 1% 72 70 pickle 1
pas_valide ELF x64 - Browser exploit - Intro 1% 31 70 pickle 1
pas_valide ELF x86 - Out of bounds attack - French Paradox 1% 63 70 sbrk 3
pas_valide ELF x86 - Remote BSS buffer overflow 1% 619 75 Tosh 1
pas_valide ELF x86 - Remote Format String bug 1% 764 75 Tosh 2
pas_valide ELF x64 - Remote heap buffer overflow - fastbin 1% 167 80 franb 1
pas_valide ELF x86 - Blind remote format string bug 1% 201 80 Lyes 1
pas_valide LinKern ARM - vulnerable syscall 1% 66 85 pickle 0
pas_valide LinKern x86 - Buffer overflow basic 1 1% 266 85 franb 2
pas_valide LinKern x86 - Null pointer dereference 1% 278 90 franb 0
pas_valide LinKern x64 - Race condition 1% 178 95 franb 0
pas_valide ELF ARM - Alphanumeric shellcode 1% 21 100 pickle 2
pas_valide ELF MIPS - URLEncoded Format String bug 1% 9 100 pickle 0
pas_valide ELF x86 - Hardened binary 1 1% 499 100 sm0k 3
pas_valide ELF x86 - Hardened binary 2 1% 392 100 sm0k 3
pas_valide ELF x86 - Hardened binary 3 1% 247 100 sm0k 1
pas_valide ELF x86 - Hardened binary 4 1% 277 100 sm0k 2
pas_valide LinKern MIPSel - Vulnerable ioctl 1% 17 100 pickle 0
pas_valide LinKern x64 - reentrant code 1% 95 100 franb 1
pas_valide ELF ARM - Heap format string bug 1% 41 105 franb 0
pas_valide ELF x64 - Sigreturn Oriented Programming 1% 169 105 Arod 3
pas_valide ELF ARM - Format String bug 1% 49 110 pickle 0
pas_valide ELF ARM - Use After Free 1% 46 110 pickle 0
pas_valide ELF x64 - Heap feng-shui 1% 37 110 laxa 2
pas_valide ELF x64 - Off-by-one bug 1% 82 110 NeedToLearn 2
pas_valide ELF x86 - Hardened binary 5 1% 208 110 sm0k 1
pas_valide LinKern ARM - Stack Overflow 1% 27 110 pickle 0
pas_valide LinKern x86 - basic ROP 1% 139 110 franb 1
pas_valide ELF ARM - Heap Off-by-One 1% 30 115 pickle 1
pas_valide ELF x64 - Remote Heap buffer overflow 1 1% 102 115 Tosh 3
pas_valide ELF x86 - Hardened binary 6 1% 197 115 sm0k 3
pas_valide ELF x86 - Hardened binary 7 1% 161 115 Tosh 3
pas_valide ELF x86 - Remote stack buffer overflow - Hardened 1% 89 115 franb 1
pas_valide LinKern x64 - RowHammer 1% 24 115 pickle 0
pas_valide LinKern x64 - SLUB off-by-one 1% 14 115 Tosh 1
pas_valide ELF ARM - Heap buffer overflow - Wilderness 1% 19 120 pickle 1
pas_valide ELF ARM - Heap Overflow 1% 22 120 pickle 0
pas_valide ELF x64 - Seccomp Whitelist 1% 33 120 pickle 0
pas_valide ELF x86 - Blind ROP 1% 61 120 franb 0
pas_valide Linkern x64 - Memory exploration 1% 62 120 franb 1
pas_valide ELF x64 - Remote Heap buffer overflow 2 1% 73 130 Tosh, Fritz 1
pas_valide ELF x64 - Blind ROP 1% 41 135 franb 1
pas_valide ELF x64 - Browser exploit - BitString 1% 15 135 pickle 0