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 APK - Anti-debug 1% 1823 40 cryptax 3 18 December 2012
pas_valide Bash - VM 1% 119 60 govlog 1 25 March 2021
pas_valide ELF ARM - Basic Crackme 2% 2863 20 0xmitsurugi 7 13 July 2016
pas_valide ELF ARM - Crypted 1% 497 35 koma 2 4 September 2012
pas_valide ELF ARM - crackme 1337 1% 1774 30 Anonymous 2 3 February 2011
pas_valide ELF C++ - 0 protection 3% 6892 10 sourcePerrier 4 13 July 2016
pas_valide ELF MIPS - Basic Crackme 2% 2379 15 sar 2 9 July 2018
pas_valide ELF x64 - Anti-debug and equations 1% 306 65 0xmitsurugi 3 18 July 2016
pas_valide ELF x64 - Basic KeygenMe 1% 573 20 fr0g 3 2 September 2020
pas_valide ELF x64 - Crackme automating 1% 716 35 0xmitsurugi 7 14 August 2018
pas_valide ELF x64 - Golang basic 1% 1699 15 jenaye 3 8 November 2018
pas_valide ELF x64 - Hidden Control Flow 1% 46 100 so3 1 18 November 2020
pas_valide ELF x64 - KeyGenMe 1% 68 60 rene-d 0 12 November 2020
pas_valide ELF x64 - Nanomites 1% 265 70 Phenol 2 4 March 2018
pas_valide ELF x64 - Nanomites - Introduction 1% 476 45 Phenol 2 4 March 2018
pas_valide ELF x86 - 0 protection 14% 32334 5 g0uZ 10 7 October 2006
pas_valide ELF x86 - Anti-debug 1% 1385 45 Tosh 3 3 June 2012
pas_valide ELF x86 - Basic 12% 26092 5 g0uZ 10 7 October 2006
pas_valide ELF x86 - CrackPass 2% 3856 30 Tosh 5 3 February 2011
pas_valide ELF x86 - ExploitMe 2% 3393 30 kmkz 5 3 February 2011
pas_valide ELF x86 - Fake Instructions 3% 6644 15 kmkz 5 21 February 2010
pas_valide ELF x86 - KeygenMe 1% 658 50 int_0x80 5 20 July 2011
pas_valide ELF x86 - No software breakpoints 2% 3097 25 yodzeb 8 2 October 2013
pas_valide ELF x86 - Packed 1% 345 70 Tosh 3 18 October 2011
pas_valide ELF x86 - Ptrace 3% 5822 15 g0uZ 3 27 November 2009
pas_valide ELF x86 - Random Crackme 2% 2693 30 kmkz 3 3 February 2011
pas_valide ELF x86 - VM 1% 484 90 Thanat0s 7 16 June 2013
pas_valide GB - Basic GameBoy crackme 1% 813 30 jambon69 2 14 September 2018
pas_valide Lua - Bytecode 1% 230 25 Bernstein 1 25 March 2021
pas_valide MachO x64 - keygenme or not 1% 1157 25 /bin/ls 2 14 April 2017
pas_valide PDF - Javascript 1% 1229 30 koma 1 14 February 2012
pas_valide PE DotNet - 0 protection 4% 7268 10 Geluchat 5 15 September 2014
pas_valide PE DotNet - Basic Anti-Debug 1% 430 20 nqnt 2 24 March 2021
pas_valide PE DotNet - Basic Crackme 1% 297 20 nqnt 0 14 April 2021
pas_valide PE DotNet - KeygenMe 1% 79 45 nqnt 0 14 April 2021
pas_valide PE x86 - 0 protection 6% 13861 5 alejandr0 6 11 November 2012
pas_valide PE x86 - AutoPE 1% 645 45 Gr4ph0s 3 5 August 2011
pas_valide PE x86 - RunPE 1% 748 75 Thanat0s 5 16 December 2013
pas_valide PE x86 - SEHVEH 1% 940 35 Thanat0s 1 4 May 2013
pas_valide PE x86 - Xor Madness 1% 489 30 ENOENT 3 17 July 2019
pas_valide PYC - ByteCode 2% 4014 20 Thanat0s 9 3 July 2013
pas_valide Powershell DeObfuscation 1% 164 35 hat.time 1 2 April 2021
pas_valide Ringgit 1% 51 110 Cryptanalyse 1 6 October 2019
pas_valide WASM - Find the NPC 1% 76 50 Cyxo 0 26 March 2021
pas_valide WASM - Introduction 1% 317 15 Cyxo 1 26 March 2021
pas_valide White-Box Cryptography #2 1% 32 130 Cryptanalyse 1 17 July 2019

Challenge Results Challenge Results

Pseudo Challenge Lang Date
Sato   PE DotNet - Basic Crackme 23 September 2021 at 11:01
Sato   PE DotNet - 0 protection 23 September 2021 at 10:23
x1a0wu   ELF x86 - Fake Instructions 23 September 2021 at 09:31
S!mo   Lua - Bytecode 23 September 2021 at 02:56
Locko-locko   ELF MIPS - Basic Crackme 23 September 2021 at 00:19
PashaEme   ELF x86 - Fake Instructions 23 September 2021 at 00:11
Lithium   ELF C++ - 0 protection 23 September 2021 at 00:07
Lithium   PE x86 - 0 protection 22 September 2021 at 23:54
Lithium   ELF x86 - Basique 22 September 2021 at 23:30
S!mo   PYC - ByteCode 22 September 2021 at 23:19