Cracking

Reverse binaries and crack executables.

This series of challenges will help you understand the inner workings of compiled languages. Disassemble the binaries provided to solve the crackmes at the assembly level.

Prerequisites:
- Advanced understanding of assembly languages on various architectures (x86, ARM, MIPS ...).
- Understanding of the different executable formats (ELF, PE, etc.).
- Mastery in the use disassemblers and debuggers.

 46 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide ELF x86 - 0 protection 14% 32608 5 g0uZ 10 7 October 2006
pas_valide ELF x86 - Basic 12% 26322 5 g0uZ 10 7 October 2006
pas_valide PE x86 - 0 protection 6% 14002 5 alejandr0 6 11 November 2012
pas_valide ELF C++ - 0 protection 3% 6988 10 sourcePerrier 4 13 July 2016
pas_valide PE DotNet - 0 protection 4% 7342 10 Geluchat 5 15 September 2014
pas_valide ELF MIPS - Basic Crackme 2% 2429 15 sar 2 9 July 2018
pas_valide ELF x64 - Golang basic 1% 1728 15 jenaye 3 8 November 2018
pas_valide ELF x86 - Fake Instructions 3% 6702 15 kmkz 5 21 February 2010
pas_valide ELF x86 - Ptrace 3% 5865 15 g0uZ 3 27 November 2009
pas_valide WASM - Introduction 1% 344 15 Cyxo 1 26 March 2021
pas_valide ELF ARM - Basic Crackme 2% 2890 20 0xmitsurugi 7 13 July 2016
pas_valide ELF x64 - Basic KeygenMe 1% 591 20 fr0g 3 2 September 2020
pas_valide PE DotNet - Basic Anti-Debug 1% 457 20 nqnt 2 24 March 2021
pas_valide PE DotNet - Basic Crackme 1% 325 20 nqnt 1 14 April 2021
pas_valide PYC - ByteCode 2% 4047 20 Thanat0s 9 3 July 2013
pas_valide ELF x86 - No software breakpoints 2% 3108 25 yodzeb 8 2 October 2013
pas_valide Lua - Bytecode 1% 239 25 Bernstein 1 25 March 2021
pas_valide MachO x64 - keygenme or not 1% 1162 25 /bin/ls 2 14 April 2017
pas_valide ELF ARM - crackme 1337 1% 1782 30 Anonymous 2 3 February 2011
pas_valide ELF x86 - CrackPass 2% 3888 30 Tosh 5 3 February 2011
pas_valide ELF x86 - ExploitMe 2% 3417 30 kmkz 5 3 February 2011
pas_valide ELF x86 - Random Crackme 2% 2709 30 kmkz 3 3 February 2011
pas_valide GB - Basic GameBoy crackme 1% 826 30 jambon69 2 14 September 2018
pas_valide PDF - Javascript 1% 1235 30 koma 1 14 February 2012
pas_valide PE x86 - Xor Madness 1% 497 30 ENOENT 3 17 July 2019
pas_valide ELF ARM - Crypted 1% 502 35 koma 2 4 September 2012
pas_valide ELF x64 - Crackme automating 1% 720 35 0xmitsurugi 7 14 August 2018
pas_valide PE x86 - SEHVEH 1% 943 35 Thanat0s 1 4 May 2013
pas_valide Powershell DeObfuscation 1% 170 35 hat.time 1 2 April 2021
pas_valide APK - Anti-debug 1% 1842 40 cryptax 3 18 December 2012
pas_valide ELF x64 - Nanomites - Introduction 1% 479 45 Phenol 2 4 March 2018
pas_valide ELF x86 - Anti-debug 1% 1394 45 Tosh 3 3 June 2012
pas_valide PE DotNet - KeygenMe 1% 85 45 nqnt 0 14 April 2021
pas_valide PE x86 - AutoPE 1% 648 45 Gr4ph0s 3 5 August 2011
pas_valide ELF x86 - KeygenMe 1% 661 50 int_0x80 5 20 July 2011
pas_valide WASM - Find the NPC 1% 82 50 Cyxo 0 26 March 2021
pas_valide Bash - VM 1% 124 60 govlog 1 25 March 2021
pas_valide ELF x64 - KeyGenMe 1% 69 60 rene-d 0 12 November 2020
pas_valide ELF x64 - Anti-debug and equations 1% 310 65 0xmitsurugi 3 18 July 2016
pas_valide ELF x64 - Nanomites 1% 268 70 Phenol 2 4 March 2018
pas_valide ELF x86 - Packed 1% 348 70 Tosh 3 18 October 2011
pas_valide PE x86 - RunPE 1% 751 75 Thanat0s 5 16 December 2013
pas_valide ELF x86 - VM 1% 487 90 Thanat0s 7 16 June 2013
pas_valide ELF x64 - Hidden Control Flow 1% 50 100 so3 1 18 November 2020
pas_valide Ringgit 1% 52 110 Cryptanalyse 1 6 October 2019
pas_valide White-Box Cryptography #2 1% 35 130 Cryptanalyse 1 17 July 2019

Challenge Results Challenge Results

Pseudo Challenge Lang Date
Kuzco   ELF x86 - 0 protection 19 October 2021 at 05:39
ALEXyyy   ELF C++ - 0 protection 19 October 2021 at 05:28
ALEXyyy   ELF x86 - Basic 19 October 2021 at 05:14
ALEXyyy   ELF x86 - 0 protection 19 October 2021 at 05:10
sektegadeng   PE DotNet - Basic Crackme 19 October 2021 at 02:34
Park57   PE x86 - 0 protection 19 October 2021 at 02:01
enes   PE x86 - 0 protection 19 October 2021 at 02:01
harma   ELF x86 - Fake Instructions 19 October 2021 at 01:01
enes   ELF x86 - Basique 19 October 2021 at 00:53
Park57   ELF x86 - Basique 19 October 2021 at 00:35