Added 'goodfet.ccspi sniffnonce' for sniffing the nonce sequences.

[goodfet] / client / goodfet.ccspi

diff --git a/client/goodfet.ccspi b/client/goodfet.ccspi
index 6654e27..10a1392 100755 (executable)
--- a/client/goodfet.ccspi
+++ b/client/goodfet.ccspi
@@ -13,10 +13,27 @@ import array, time;
 
 from GoodFETCCSPI import GoodFETCCSPI;
 
+
+#Some quick functions for yanking values out of a packet.
+def srcadr(packet):
+    """Returns the source address of a packet as an integer."""
+    return ord(packet[4])+(ord(packet[5])<<8);
+def isencrypted(packet):
+    """Returns true if the packet is encrypted.""";
+    return ord(packet[1])&0x08;
+def pktnonceseq(packet):
+    """Returns the nonce sequence of a packet."""
+    nonce=0;
+    for byte in [0xa,9,8,7]:
+        nonce=(nonce<<8)|ord(packet[byte]);
+    return nonce;
+
 if(len(sys.argv)==1):
     print "Usage: %s verb [objects]\n" % sys.argv[0];
     print "%s info" % sys.argv[0];
     print "%s regs" % sys.argv[0];
+    print "%s ram" % sys.argv[0];
+    print "%s ramtest" % sys.argv[0];
     print "%s test" % sys.argv[0];
     print "%s peek 0x$start [0x$stop]" % sys.argv[0];
     print "%s poke 0x$adr 0x$val" % sys.argv[0];
@@ -28,9 +45,11 @@ if(len(sys.argv)==1):
     
     print "\n%s surf" % sys.argv[0];
     print "%s sniff [chan]" % sys.argv[0];
+    print "%s sniffstrings [chan]" % sys.argv[0];
     print "%s bsniff [chan]" % sys.argv[0];
     print "%s sniffcrypt 0x$key [chan]" % sys.argv[0];
     print "%s sniffdissect" % sys.argv[0];
+    print "%s sniffnonce" % sys.argv[0];
     
     print "\n%s txtoscount [-i|-r]   TinyOS BlinkToLED" % sys.argv[0];
     print "%s reflexjam [channel=11] [delay=0]" % sys.argv[0];
@@ -96,6 +115,32 @@ if(sys.argv[1]=="regs"):
     for adr in range(0x10,0x40): #*1024):
         val=client.peek(adr);
         print "%04x:=0x%04x" % (adr,val);
+if(sys.argv[1]=="ram"):
+    for adr in range(0x0,0x16D,16):
+        row=client.peekram(adr,32);
+        s="";
+        for foo in row:
+            s=s+(" %02x" % ord(foo))
+        print "%04x: %s" % (adr,s);
+if(sys.argv[1]=="ramtest"):
+    client.pokeram(0x00,[0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef,
+                         0xde,0xad,0xbe,0xef]);
+    
+    for adr in range(0x0,0x16D,16):
+        row=client.peekram(adr,32);
+        s="";
+        for foo in row:
+            s=s+(" %02x" % ord(foo))
+        print "%04x: %s" % (adr,s);
 if(sys.argv[1]=="test"):
     data=client.trans([0x20, 0xde, 0xad]);
     print "%02x %02x" % (ord(data[1]), ord(data[2]));
@@ -186,7 +231,8 @@ if sys.argv[1]=="surf":
         sys.stdout.flush();
         chan=chan+1;
 
-if(sys.argv[1]=="sniff" or sys.argv[1]=="sniffdissect"):
+if(sys.argv[1]=="sniff" or sys.argv[1]=="sniffdissect" or sys.argv[1]=="sniffstrings" or
+   sys.argv[1]=="sniffnonce"):
     #Promiscuous mode.
     client.RF_promiscuity(1);
     client.RF_autocrc(1);
@@ -212,6 +258,11 @@ if(sys.argv[1]=="sniff" or sys.argv[1]=="sniffdissect"):
             packet=client.RF_rxpacket();
         if sys.argv[1]=="sniffdissect":
             client.printdissect(packet);
+        elif sys.argv[1]=="sniffstrings":
+            print packet;
+        elif sys.argv[1]=="sniffnonce":
+            if isencrypted(packet):
+                print "%04x: %08x" % (srcadr(packet),pktnonceseq(packet));
         else:
             client.printpacket(packet);
         sys.stdout.flush();
@@ -253,8 +304,12 @@ if(sys.argv[1]=="sniffcrypt"):
     
     if len(sys.argv)>2:
         key=int(sys.argv[2],16);
+        nonce=int(sys.argv[3],16);
+        
         print "Setting KEY0 to %x" % key;
+        print "Setting NONCE to %x" % nonce;
         client.RF_setkey(key);
+        client.RF_setnonce(nonce);
     if len(sys.argv)>3:
         freq=eval(sys.argv[3]);
         if freq>100: