<Added writeup for sim-worker/ commit> (njitacm#12)

* <Added writeup for sim-worker/ commit>

* Update README.md

Author: yl-ang

Diff for: writeups/sim-worker/sirTensor/README.md

@@ -0,0 +1,26 @@
+# sirTensor's Write-up for sim-worker
+
+1. run the file in gdb
+```
+$ gdb ./sim-worker
+```
+
+2. Set breakpoint at 0x8001253
+```
+(gdb) b *0x8001235
+```
+
+3. Find out where our variable storing the amount of doge coins we have in the stack.
+```
+(gdb) x/4xw $sp
+```
+
+4. Modify our dogecoins by setting it such that it is greater than 10000000.
+```
+set *((int *) 0x7ffffffee5b8) = 10000001
+```
+
+5. ```continue``` our program and buy flag
+```
+jctf{TypesHaveOverflows}
+```