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UnknownAgent123 on 7:39 PM 04/21/2025: Valid license key: CTF-11060565
dark_sword77 on 8:09 PM 04/21/2025: Just patched this program to any license by changing one jump statement lol
BugsBunny on 9:48 AM 04/23/2025: Is anyone else also facing using when opening the license_checker.rar?
ericxu833 on 3:20 PM 04/23/2025: Enter license key: CTF-00820053
License key is valid!
Program activated: CTF{this_is_secret_k3y}
soulOfCinder on 8:13 PM 04/23/2025: Really good and interesting . I also found the jump command and patched it .
pizzacruda on 10:34 PM 04/26/2025: # We are looking for an 8-digit number that meets the three conditions:
# 1. n % 59 == 12
# 2. n % 113 == 12
# 3. The last byte of the number is equal to 0x55 (i.e., n & 0xFF == 0x55)
# Define the search range: 8-digit numbers (from 10000000 to 99999999)
for n in range(10000000, 100000000): # Searching between 10 million and 100 million
if n % 59 == 12 and n % 113 == 12 and (n & 0xFF) == 0x55:
result = n
break
print(f"The number that meets the conditions is: {result}")
// El número que cumple las condiciones es: 11060565
iAniket9 on 3:01 PM 04/27/2025: Input key length should be 8 digits with "CTF-XXXXXXXX" where each "X" represents a digit. The program checks for KEY Length = 0x0C. (0x0C HEX = 12 DEC)
VALID KEY: CTF-12767317
Alternatively You can also patch the jmp which can be found at the following address (May differ):
00007FF6CDB31B82|0F84 EF000000|je license_checker.7FF6CDB31C77 |
khoinguyenquang16 on 9:56 AM 05/05/2025: Locate where the validateLicenseKey function is called in main and patch the jz operant after the function to bypass the validation.
Danko on 7:24 PM 05/29/2025: CTF-11060565,CTF-12767317,CTF-14474069,CTF-16180821,CTF-17887573,CTF-19594325,CTF-21301077,CTF-23007829,CTF-24714581,CTF-26421333,CTF-28128085,CTF-29834837,CTF-31541589,CTF-33248341,CTF-34955093,CTF-36661845,CTF-38368597,CTF-40075349,CTF-41782101,CTF-43488853,CTF-45195605,CTF-46902357,CTF-48609109,CTF-50315861,CTF-52022613,CTF-53729365,CTF-55436117,CTF-57142869,
CTF-58849621,CTF-60556373,CTF-62263125,CTF-63969877,CTF-65676629,CTF-67383381,CTF-69090133,CTF-70796885,CTF-72503637,CTF-74210389,CTF-75917141,CTF-77623893,CTF-79330645,CTF-81037397,CTF-82744149,CTF-84450901,CTF-86157653,CTF-87864405,CTF-89571157,CTF-91277909,CTF-92984661,CTF-94691413,CTF-96398165,CTF-98104917,CTF-99811669
Danko on 7:29 PM 05/29/2025: Sorry:
CTF-11060565,CTF-53729365,CTF-96398165
wutan on 10:55 AM 06/17/2025: great crackme