ELF MIPS - URLEncoded Format String bug

100 Points

Sometimes security mitigation is just about annoying the attacker into submission

Author

pickle, 7 October 2018

Level

Validations

25 Challengers 1%

Note

14 Votes

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Solution

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Challenge Results

Pseudo	Challenge	Lang	Date
laxa	ELF MIPS - URLEncoded Format String bug		7 March 2022 at 20:52
Bdenneu	ELF MIPS - URLEncoded Format String bug		21 January 2022 at 16:46
voydstack	ELF MIPS - URLEncoded Format String bug		1 November 2021 at 20:47
Slowerzs	ELF MIPS - URLEncoded Format String bug		4 July 2021 at 10:35
knacky	ELF MIPS - URLEncoded Format String bug		6 February 2021 at 23:15
CanardMandarin	ELF MIPS - URLEncoded Format String bug		28 December 2020 at 20:28
Jrmbt	ELF MIPS - URLEncoded Format String bug		17 September 2020 at 17:44
awe	ELF MIPS - URLEncoded Format String bug		14 September 2020 at 22:30
Baptiste M. (Creased)	ELF MIPS - URLEncoded Format String bug		16 May 2020 at 14:52
ENOENT	ELF MIPS - URLEncoded Format String bug		18 January 2020 at 22:34

83 Challenges

Results	Name	Validations	Number of points	Difficulty	Author	Note	Solution	Date
	ELF x86 - Stack buffer overflow basic 1	8% 18430	5		Lyes		11	25 March 2015
	ELF x86 - Stack buffer overflow basic 2	6% 13180	10		Lyes		10	10 April 2015
	PE32 - Stack buffer overflow basic	1% 1434	10		Ech0		8	3 December 2019
	ELF x86 - Format string bug basic 1	4% 8353	15		Lu33Y		6	8 February 2012
	ELF x64 - Stack buffer overflow - basic	3% 6412	20		Arod		7	31 May 2015
	ELF x86 - Format string bug basic 2	2% 4227	20		Lyes		5	8 April 2015
	ELF x86 - Race condition	3% 5498	20		Lu33Y		10	8 February 2012
	ELF ARM - Stack buffer overflow - basic	1% 1188	25		pickle		7	9 March 2017
	ELF MIPS - Stack buffer overflow - No NX	1% 427	25		franb		2	28 September 2018
	ELF x64 - Double free	1% 422	25		Esad		1	23 March 2021
	ELF x86 - Stack buffer overflow basic 3	2% 4218	25		Lyes		4	10 April 2015
	ELF x86 - Use After Free - basic	1% 1343	25		Esad		3	26 May 2019
	ELF ARM - Stack Spraying	1% 219	30		pickle		4	2 April 2017
	ELF x64 - Stack buffer overflow - PIE	1% 506	30		HomardBoy		2	26 March 2021
	ELF x86 - BSS buffer overflow	2% 3749	30		Lu33Y		7	8 February 2012
	ELF x86 - Stack buffer overflow basic 4	1% 2549	30		Lu33Y		5	8 February 2012
	ELF x86 - Stack buffer overflow basic 6	1% 2507	30		TiWim		5	10 March 2016
	ELF x86 - Format String Bug Basic 3	1% 1104	35		Lyes		2	27 May 2015
	PE32 - Advanced stack buffer overflow	1% 182	35		Ech0		4	3 December 2019
	ELF ARM - Basic ROP	1% 636	40		pickle		5	11 March 2017
	ELF MIPS - Basic ROP	1% 126	40		dagger		1	7 October 2018
	ELF x86 - Stack buffer overflow - C++ vtables	1% 779	40		sebbb		2	20 July 2015
	PE32+ Format string bug	1% 81	45		Ech0		1	3 December 2019
	ELF x64 - Logic bug	1% 174	50		sbrk		3	8 July 2017
	ELF x86 - Bug Hunting - Several issues	1% 95	50		sbrk		2	19 January 2018
	ELF x86 - Stack buffer and integer overflow	1% 1757	50		Lu33Y		4	8 February 2012
	ELF x86 - Stack buffer overflow - ret2dl_resolve	1% 247	50		kikko		2	28 February 2019
	ELF x86 - Stack buffer overflow basic 5	1% 1635	50		Lu33Y		1	8 February 2012
	ELF x64 - Stack buffer overflow - advanced	1% 1163	55		Arod		4	5 June 2015
	ELF MIPS - Format String Glitch	1% 55	60		pickle		1	21 October 2018
	ELF x64 - Heap Filling	1% 33	60		voydstack		0	27 May 2021
	ELF x86 - Information leakage with Stack Smashing Protector	1% 790	60		Arod		2	20 May 2015
	ELF x64 - File Structure Hacking	1% 38	65		nobodyisnobody		0	27 May 2021
	ELF ARM - Race condition	1% 125	70		pickle		1	3 June 2017
	ELF x64 - Browser exploit - Intro	1% 69	70		pickle		1	2 November 2018
	ELF x64 - Heap Safe-Linking Bypass	1% 23	70		nobodyisnobody		0	22 October 2021
	ELF x64 - ret2dl_init	1% 24	70		kikko		0	27 May 2021
	ELF x86 - Out of bounds attack - French Paradox	1% 100	70		sbrk		3	17 September 2017
	ELF x86 - Remote BSS buffer overflow	1% 724	75		Tosh		1	6 February 2012
	ELF x86 - Remote Format String bug	1% 906	75		Tosh		2	6 February 2012
	PE32+ Basic ROP	1% 45	75		Ech0		0	6 December 2019
	ELF x64 - Remote heap buffer overflow - fastbin	1% 255	80		franb		1	5 February 2017
	ELF x86 - Blind remote format string bug	1% 284	80		Lyes		2	8 June 2015
	LinKern ARM - vulnerable syscall	1% 136	85		pickle		0	22 March 2017
	LinKern x86 - Buffer overflow basic 1	1% 447	85		franb		3	16 February 2016
	LinKern x86 - Null pointer dereference	1% 434	90		franb		0	16 February 2016
	LinKern x64 - Race condition	1% 286	95		franb		3	16 February 2016
	ELF ARM - Alphanumeric shellcode	1% 40	100		pickle		2	16 March 2017
	ELF MIPS - URLEncoded Format String bug	1% 25	100		pickle		0	7 October 2018
	ELF x86 - Hardened binary 1	1% 683	100		sm0k		3	11 February 2012
	ELF x86 - Hardened binary 2	1% 540	100		sm0k		3	11 February 2012
	ELF x86 - Hardened binary 3	1% 329	100		sm0k		1	11 February 2012
	ELF x86 - Hardened binary 4	1% 373	100		sm0k		2	11 February 2012
	LinKern MIPSel - Vulnerable ioctl	1% 52	100		pickle		0	23 October 2018
	LinKern x64 - reentrant code	1% 157	100		franb		2	1 March 2016
	ELF ARM - Heap format string bug	1% 72	105		franb		1	3 June 2017
	ELF x64 - Sigreturn Oriented Programming	1% 235	105		Arod		4	25 June 2015
	ELF ARM - Format String bug	1% 80	110		pickle		2	14 March 2017
	ELF ARM - Use After Free	1% 86	110		pickle		0	22 March 2017
	ELF x64 - FILE structure hijacking	1% 26	110		voydstack		3	27 May 2021
	ELF x64 - Heap feng-shui	1% 65	110		laxa		2	4 August 2017
	ELF x64 - Off-by-one bug	1% 128	110		NeedToLearn		2	19 May 2016
	ELF x86 - Hardened binary 5	1% 289	110		sm0k		1	11 February 2012
	LinKern ARM - Stack Overflow	1% 55	110		pickle		0	24 July 2017
	LinKern x86 - basic ROP	1% 235	110		franb		3	6 May 2016
	ELF ARM - Heap Off-by-One	1% 52	115		pickle		1	11 March 2017
	ELF x64 - Remote Heap buffer overflow 1	1% 153	115		Tosh		3	26 June 2015
	ELF x86 - Hardened binary 6	1% 271	115		sm0k		3	11 February 2012
	ELF x86 - Hardened binary 7	1% 224	115		Tosh		3	21 January 2013
	ELF x86 - Remote stack buffer overflow - Hardened	1% 150	115		franb		1	17 August 2016
	LinKern x64 - RowHammer	1% 70	115		pickle		1	17 March 2019
	LinKern x64 - SLUB off-by-one	1% 55	115		Tosh		2	9 May 2019
	ELF ARM - Heap buffer overflow - Wilderness	1% 33	120		pickle		1	25 March 2017
	ELF ARM - Heap Overflow	1% 39	120		pickle		1	2 April 2017
	ELF x64 - Seccomp Whitelist	1% 57	120		pickle		0	3 June 2017
	ELF x86 - Blind ROP	1% 119	120		franb		0	9 October 2016
	LinKern x64 - Memory exploration	1% 105	120		franb		1	27 July 2016
	WinKern x64 - Advanced stack buffer overflow - ROP	1% 26	120		__syscall		1	27 January 2020
	WinKern x64 - Use After Free	1% 18	120		__syscall		0	27 January 2020
	ELF x64 - Remote Heap buffer overflow 2	1% 117	130		Tosh		1	1 July 2015
	ELF x64 - Advanced Heap Exploitation - Heap Leakless & Fortified	1% 16	135		nobodyisnobody		1	27 May 2021
	ELF x64 - Blind ROP	1% 89	135		franb		1	10 March 2018
	ELF x64 - Browser exploit - BitString	1% 30	135		pickle		0	15 December 2018